Please register or log in.
  • (64 pages)
  • first
  • prev
  • 1
  • 2
  • 3
  • 4
  • 5
  • next
  • last
Advertisements in this category Notify me when new ads are submitted in this category
  Title ascendingdescending Type ascendingdescending Price ascendingdescending Picture
add to favorites The influence of raw materials on resin grinding wheel Pc  
No Picture

The grinding effect of resin grinding wheel in industrial production is irreplaceable. The resin grinding wheel with good quality has better effect and longer life, and of course it is more favored by users. The quality of the resin grinding wheel is determined by the raw materials for the resin grinding wheel. Good raw materials can produce high performance cutting disc, and vice versa. Let us talk about the importance of raw materials for resin grinding wheels:

      1. Powder phenolic resin. For powdered phenolic resins, fluctuations in flow length, particle size, urotropine content and gelation time can affect the quality of the grinding wheel. The flow of the powder resin is the most important performance index affecting the structure of the binder. The particle size affects the amount of the wetting agent, and the content of the volatiles is also important. In the actual grinding wheel production process, it is necessary to ensure the stability of the performance of each batch of powder resin, so as to ensure the quality of the grinding wheel.

      2. The stability of the technical indicators of the mesh. The mesh was originally applied to the resin wheel and the most important role was to increase the strength of the wheel. As the performance of the resin grinding wheel continues to increase, the role of the mesh in the resin grinding wheel is very important. Mainly manifested in: fluctuations in the strength of the grinding wheel, deformation of the slice, stratification of the grinding plate, and so on. The thickness of the mesh has an influence on the strength and viscosity of the grinding wheel and the cutting and grinding performance of the resin grinding wheel. In theory, under the condition that the grinding wheel production process is stable and allowed, the mesh with the higher amount of glue, the grinding wheel The higher the strength, the better the bonding performance and the more stable the cutting.

      3. Liquid phenolic resin. The fluctuation range of solid content, viscosity, gel time and water solubility of liquid phenolic resin has different degrees of influence. Therefore, the grinding wheel manufacturer must combine its own mixing, forming and hardening process characteristics according to its own product performance requirements. Develop a technical index and range of liquid resins suitable for you.

      The hardness of the resin grinding wheel refers to the difficulty of the abrasive grains on the surface of the grinding wheel falling off under the action of the grinding force. The hardness of the resin grinding wheel is soft, indicating that the abrasive grains of the resin grinding wheel are easily peeled off, and the hardness of the resin grinding wheel is hard, indicating that the abrasive grains are difficult to fall off. The hardness of the resin wheel and the hardness of the abrasive are two different concepts. The same kind of abrasive can be made into resin grinding wheels of different hardness, which is mainly determined by the performance and quantity of the bonding agent and the manufacturing process of the resin grinding wheel. The significant difference between grinding and cutting is that the resin grinding wheel has “self-sharpness”. Choosing the hardness of the resin grinding wheel is actually choosing the self-sharpness of the resin grinding wheel. I hope that the sharp grinding particles should not fall off too early or be blunt. Still not falling off.
add to favorites Green cutting is needed for the general trend Pc  
No Picture
While continuing to maintain the rapid growth of the industrial economy, how to reduce or avoid further damage to the environment has become a topic of common concern to the whole society, and green manufacturing has naturally attracted more attention.
The concept of green manufacturing has been proposed for many years. Especially in foreign countries, China cut off disc green manufacturing has been widely regarded as an important means to achieve sustainable development of the manufacturing industry. Some mature green cutting technologies have also been widely promoted and applied.
In China, while manufacturing prosperity has contributed to economic growth, resource waste and environmental pollution have followed, and the consequences have begun to emerge. Now, while continuing to maintain the rapid growth of the industrial economy, how to reduce or avoid further damage to the environment has become a topic of common concern to the whole society. Green manufacturing has naturally attracted more people's attention.
The general trend of energy saving and emission reduction
According to statistics, 70% of environmental pollutants come from manufacturing. While modern manufacturing has brought unprecedented material civilization to mankind, it has also brought more wastes such as waste gas, waste residue and waste liquid to society.
From a certain perspective, the impact of the industrial manufacturing sector under the general trend of energy conservation and emission reduction is obviously the biggest. Such a large pressure is passed on to the industrial manufacturing enterprises themselves, which is unrealistic by simply limiting the number of enterprises and affecting normal production. After all, the goal of achieving energy conservation and emission reduction at the expense of the number and scale of industrial manufacturing companies can only solve the temporary itch and cannot solve the problem fundamentally.
Then to find a solution from the manufacturing process, green cutting technology as a sustainable manufacturing model has become one of the choices of manufacturing companies.
Traditional manufacturing models have a big impact on the environment
The reason why the traditional manufacturing mode can not meet the requirements of energy saving and emission reduction is because the cutting fluid is used in a large amount in the processing process, which brings harm to the environment and the human body itself.
In the field of machining, waste liquids produced using cutting fluids are the main contaminant products. Until now, traditional metal cutting still relies heavily on wet cutting of cutting fluids.
The use of cutting fluid can achieve lubrication, cooling, cleaning, auxiliary chip removal and rust prevention performance, and has a significant effect on improving cutting quality and efficiency, reducing tool wear and the like. The cutting fluid has developed to the present day, and it is widely used in the mechanical processing industry, and it is widely used, and it has become a wide variety of industrial products with a wide range of products.
However, the use of cutting fluids also poses a hazard to the environment and human health. If the waste liquid of the cutting fluid is improperly treated, it will cause serious pollution to water resources, and its biodegradability is poor, and it stays in water and soil for a long time. Even with the strictly treated waste liquid, long-term accumulation can cause pollution, and the toxic chemical components remaining on the chips can also pollute the air.
Oil mist generated during the use of cutting fluid and irritating odors may cause harm to the operator's respiratory system. Long-term exposure to chemicals added to it can cause cancer, so people who have been exposed to poor cutting fluid for a long time are prone to respiratory diseases.
Obviously, the traditional manufacturing mode can not bear the requirements of green environmental protection, and green cutting without using cutting fluid becomes an inevitable choice.
add to favorites Sand maker contributes much to infrastructure construction Pc  
No Picture

At present, with the fast development of infrastructure construction, the demands for natural sand in the market are constantly increasing. However, the natural sand is not necessarily able to satisfy the construction needs, and at this time, the sand making machine is researched and developed in time, and the artificial sand produced by this machine is able to perfectly replace the natural sand.

The sand maker researched and developed by our company has outstanding sand making effects. Since the quality of the sand and stone is high and the fine sand manufactured by this machine has very wide application range, this equipment enjoys great popularity in the market. The sand maker manufactured by us is distinguished from that of other companies due to its unique structural design and the technology we use has been granted national patent certificate.

Regarding the design, the sand maker adopts a upper and a lower machine frame in order to buffer the impact on the spare parts of the machine from the materials and to protect the machine from being damaged, thus prolonging its service life. On the other hand, the unique upper and lower structure is able to make sure that the sand maker can work in a stable manner during the sand making process even with high workload. And what is more, if the workers feed too many materials so that the machine is blocked, then the workers can open the upper cover and discharge the materials at any time so that the machine is able to run very fast. And finally the maintenance is more convenient.

add to favorites Grinding wheel five characteristics -abrasive Pc  
No Picture

Abrasives are generally sharp, hard materials used to grind softer surfaces. Abrasives are available in two categories: natural abrasives and synthetic abrasives. According to the hardness classification, there are two categories of super hard abrasives and ordinary abrasives. Abrasives range from softer household detergents, gem abrasives to the hardest material diamonds. Abrasives are essential for making every precision product. Many natural abrasives have been replaced by artificial abrasives. In addition to diamond, the performance of natural abrasives is not stable, but it still has its value. Diamond is the hardest abrasive, mainly in South Africa, accounting for 95% of the world's total production, followed by Brazil, Australia, Guyana and Venezuela. Industrial diamonds range from off-white to black.China supply 7" cut off disc After milling, they can be used to make grinding wheels, abrasive belts, polishing wheels and abrasive powders.

Since the 1970s, artificial abrasives have been produced in large quantities, the most important of which are tantalum carbide and alumina. Carbide is commonly known as silicon carbide. It is prepared by mixing pure vermiculite with coke and adding a small amount of wood chips, then placing it in an electric furnace and baking at 2,200-2,480 °C for about 36 hours. Alumina is commonly known as corundum. It is commonly used in the industry to heat and melt aluminum bauxite. It is used as a heat-sensitive metal abrasive in black and white, and it is used to process castings and steel. Synthetic diamond wheels are the hardest abrasives and are necessary for the sharpening of carbide tools. Synthetic diamonds can also be made into tools of various shapes and sizes for cutting glass and ceramics. Boron carbide has a higher hardness than tantalum carbide and is not suitable for making grinding wheels. It can be used to replace expensive diamonds when polishing hard materials. Cubic boron carbide has twice the hardness of tantalum carbide and 2.5 times that of alumina, and it is effective to grind certain tool steels.

One of the important properties of an abrasive is its hardness, which must be harder than the material to be processed. The Mohs hardness tester is commonly used to determine the hardness of various abrasives. Another important property of abrasives is toughness or volume strength. The mixing amount, purity, particle size, and crystal structure of the raw materials can be changed to control this property to suit various applications.

For the manufacture of abrasive products, all raw materials need to be crushed and screened except for powdered talc and iron oxide. The screening particle size should be 4 to 900, that is, the diameter is about 6 mm (millimeter) to 6 μm (1 mm in millimeters). One) or finer. The grinding wheel is the most important abrasive product. It is mixed by abrasive and binder in a certain proportion, sintered by compression molding, and finally must be shaped, balanced and overspeed tested. Abrasive cloth and sandpaper are another kind of abrasive products with a large output. They are bonded to the base material (cloth or paper) by abrasive grains and dried to cut into different specifications. Others are powder or granular abrasives. After screening, they need to be processed by certain processes, such as grinding or polishing abrasives, usually with mineral grease or wax to meet the needs of different working conditions.
add to favorites Grinding machine classification of grinding wheel workpiece Pc  

A grinding machine is a variety of machine tools that use a thin flat cutting disc to machine a workpiece. Grinding machines are commonly used for grinding and cutting the surface of workpieces. Usually the types of grinding machines are:

1. Cylindrical grinding machine: common type base type, mainly used for grinding cylindrical and conical outer surface; corresponding to external grinding wheel.
2, internal grinding machine: ordinary type base, mainly used for grinding cylindrical, conical inner surface; corresponding to internal grinding wheel.
3. Coordinate grinding machine: A kind of internal grinding machine with precise coordinate positioning device.
4, centerless grinding machine: the workpiece is used without the heart, the ordinary support between the guide wheel bracket, driven by the guide wheel to rotate the workpiece, mainly used to grind the cylindrical surface.
5, surface grinder: mainly used for the grinding of the workpiece plane.
6. Belt Grinder: Stop the workpiece grinding with a fast moving belt.
7. Honing machine: used to grind various surfaces of workpieces.
8. Grinding machine: used to grind the plane or cylindrical inner and outer surfaces of the workpiece.
9. Guide grinding machine: It is mainly used to grind the guide surface of machine tools.
10, tool grinding machine: mainly used for grinding tools.
11. Multi-purpose grinding machine: used to grind the cylindrical, conical inner and outer surface war surface, and can grind the workpiece with the follow-up device and accessories.
12, special grinding machine: dedicated to the machining of a certain type of parts to stop grinding. According to the special grinding machine for processing parts, it is divided into: spline shaft grinding machine, crank grinding machine, cam grinding machine, gear grinding machine, thread grinding machine, curve grinding machine and so on.
      Use the grinding machine to select the matching grinding wheel, attach the grinding wheel to install the notice, correctly install the grinding wheel, and use the grinding machine correctly.
add to favorites The most commonly used wheel binder Pc  
The most commonly used wheel binders are ceramic binder (V) and resin binder (B).high performance cutting disc Ceramic bond is an inorganic binder with stable chemical properties, heat resistance, good corrosion resistance and porosity. Large, the grinding wheel made of this kind of bonding agent has high grinding efficiency and low wear, and can better maintain the geometry of the grinding wheel. The most widely used. Suitable for grinding ordinary carbon steel, alloy steel, stainless steel, cast iron, hard alloy, non-ferrous metal Wait. However, the porcelain bond grinding wheel is relatively brittle and cannot be subjected to severe vibration. Generally only at 35 meters / 杪 Used inside the speed. The resin binder is an organic binder, and the binder is made of a high-strength wheel with a certain amount of bullets. Sex, low heat resistance, good self-sharpness, easy to manufacture, and short process cycle. Can be manufactured at speeds above 50 m/s The grinding wheel and the very thin flat cutting disc Its application range is second only to ceramic bonding agents, widely used for rough grinding, rough grinding, cutting Broken and free grinding, such as grinding steel ingots, casting burrs and so on. Can manufacture high speed, high-gloss grinding wheels, heavy load, Cutting and grinding wheels of various special requirements.
add to favorites Hardware, Software And Management Improve Business Strength Pc  
No Picture

1, about the hardware. Why do you mention the hardware first? Because this is the foundation, all the value is ultimately reflected in the output of the device, and all other work is attached to the device. Therefore, the equipment should not be too backward, at least to ensure that the production equipment can produce standard cut off wheel for metal products that meet the technical requirements. In terms of hardware, in addition to production equipment, there are data information collection and processing equipment, which are used after docking with IoT technology. These devices, including sensors, data analyzers, etc., are extremely important and determine whether you are eligible to enter the market on future commercial battlefields.

2, about the software, because the use is not good, many companies do not value, or that did not attract enough attention. In general, many companies don't understand how software can play a huge role, just know that there are benefits, in the context of software promotion, follow the trend. Can you have a role to put aside, anyway, I have it, and there is no obstacle to communicating with customers. Two points have been neglected here. First, the power of software to work is greatly underestimated, especially in the collection and processing of data and information. Second, many companies are only equipped with software, but do not know, software Is a system engineering, how much software can play, depending on the person who uses it, whether the person using it has professional knowledge, systematic training without software, and other aspects of the software in which it is connected Supporting situation, whether the connection with the software is smooth.

3. Regarding management, in some small and medium-sized enterprises, due to the large number of things and relatively few people, the autonomy of each employee is relatively large. Under normal circumstances, the task can be completed according to their own ideas. However, once the company develops to a certain scale, the company begins to improve the system and enter the standardization stage. The company regards the regulatory process as a standard, often resulting in no matter how innovative the employee's ideas are, how efficient it is to solve the problem, but the employees have no right to speak, and the employees are more It is like a tool for performing tasks. Although it does not deny the necessity of regulations and processes, in the process of learning the regulatory process from large enterprises, don't just focus on the form or the essence. The regulatory process ensures that many things are not problematic, but they also rigidify the organization, limiting efficiency and inhibiting the use of employees' intellectual resources. Large companies have the comparative advantage of human resources and market size, so solving the problems he faces, regulations and processes are more important, and his scale advantage can offset some of the inefficient processes. However, the problems faced by SMEs are definitely different from those of large enterprises, and there is no advantage of large enterprises. Under such conditions, it is hard to learn, and the name is advanced, which is obviously tied to his own hands and feet. SMEs have their own advantages, which is more flexible and faster.

add to favorites China cut off disc Economic development of abrasives Pc  
No Picture
In the past ten years, the development of the Internet economy has been rising, and the abrasives market has benefited from the industry changes brought by the network channels.cut off disc for stainless steelThe quality and price of more abrasive abrasives are on the same competition line. With the equal competition brought by the platform, the companies in the industry have to think more about how to improve the differentiated marketing of their products and gain more market share. After all, everyone knows that "the market is not a single market, and the quality of products and quality services determine the market." The services here arecut off disc for stainless steel actually interoperable, such as abrasives manufacturers or merchants, customers are in arrears, they will provide customers with guidance on template issues, during which time customers need to pay to fulfill their commitments. Conversely, non-interoperable services will gradually undermine the business chain between vendors and customers. More and more, there will be more and more abrasives manufacturers are reluctant to do business in arrears. In recent years, with the rising cost of various materials, warehouse storage, transportation, etc., the abrasives industry has gradually entered the era of low profit, and manufacturers and merchants in the industry are also more cautious about dealing with under-the-counter trading orders. The goods have become the new normal of the abrasives market every day. Since ancient times, although the abrasives market is in arrears with the payment of goods, it is easier to reach orders, and each order is not small, but despite the large amount, there is actually no high profit, meager profit plus the amount (even the last paragraph). The arrears will greatly affect the flow of information of the merchants, which brings great pressure to the merchants! Another important reason is that payments that are often in arrears often become unsuccessful over time or from various external factors. Once a merchant encounters such a transaction, it is a loss-making transaction in a minute. Often, there are people who have lost their money, and finally the capital turnover is weak. One stack is one, the more they are dragged, the more they are overwhelmed until they close their doors. Therefore, with the birth of a new business model, the re-delivery of goods will gradually become a new form of trading in the abrasives market, and the new year will also catalyze the new normality of this pay-as-you-go abrasives market!
add to favorites China Abrasives System Optimization Pc  
No Picture
1.1 Ventilation and dust removal system
One of the main processes of corundum production is to mix the raw and auxiliary materials into a certain proportion and then send them into an electric arc furnace to produce a block-shaped abrasive. During the smelting process, a large amount of soot is generated. In order to facilitate the feeding and dip, most enterprises use semi-closed covers.China cut off disc The problem caused by the semi-closed cover is that the amount of smoke is large, and the second is that the furnace cooling water generates a large amount of steam into the hood. These two problems have brought great difficulties to the purification of flue gas. Many manufacturers have not adopted purification measures, and the pollution is very serious.
1.2 Silicon Carbide Smelting Furnace
The silicon carbide smelting furnace is generally a fixed resistance furnace. During the whole process of smelting, a large amount of dusty flue gas escapes, especially the unloading material is the most serious. Due to the high temperature of the flue gas, the large amount of flue gas, China cut off discthe wide surface of the flue gas, and the high dust resistivity, the purification cost is extremely high, and many manufacturers are discouraged.
1.3 The form of the vacuum hood and the appropriate air intake
Due to the rapid changes in the process equipment of the abrasives industry in recent years, how to design the form of the vacuum hood and select the appropriate suction volume has become a new problem. The dust hood is an important part of the ventilation dust removal system. Its effectiveness greatly affects the technical and economic performance indicators of the whole system, and should be given enough attention.
1.4 Dust removal equipment
The dust removal equipment used in the abrasives industry is mainly bag filter. Due to the misunderstanding of the dust properties or insufficient investment, most of the dust removal equipments are overloaded, with high energy consumption and operating costs.
1.5 Dust removal system wear and tear
The hardness of the abrasive is very high, and the Mohs hardness is above 9.0, which causes the metal components in the cyclone, the air duct, the fan and the bag filter to be seriously worn. 1.6 Investment issues
The ventilation and dust removal project has a high initial investment and high operating costs, and is a high-input and low-output project. Therefore, some manufacturers pay insufficient attention to the work of ventilation and dust removal, and even daunting.
add to favorites Precautions For The Long Life Grinding Wheel Pc  
1. The resin long life grinding wheel must be inspected visually before use. If skin damage is not allowed. 2. The grinder used must have intact guards. The main shaft of the grinder should meet the technical requirements. 3. When the resin long life grinding wheel is installed on the grinder, it is forbidden to beat the grinding wheel. The tightening of the grinding wheel requires moderate tightness. Too loose, too tight or the uneven contact surface between the grinding wheel and the flange is an important factor that causes the grinding wheel to be damaged. 4. Each grinding wheel is marked with a large working speed. It is required that the speed of the resin long life grinding wheel should not exceed the specified safe use speed. 5. Protective equipment (protective glasses, dust masks, safety helmets, protective gloves, etc.) must be worn before using the grinding wheel to ensure safe use. 6. After the long life grinding wheel is installed, it should be idle for 1 minute. Observe the abnormality before using it. 7. When using the resin grinding wheel, it is necessary to slowly enter the knife and operate it evenly. Do not stack the workpieces to prevent the grinding wheel from loosening and falling off, resulting in serious accidents. 8. When grinding and grinding the long life grinding wheel, it should be inclined at an angle of 45 degrees with the object being ground.
add to favorites Hand cone method to test the hardness of the grinding wheel Pc  

The hand cone method was first applied to the hardness test of the grinding wheel in 1926. This method is relatively simple. The inspector uses a steel cone to manually insert the surface of the cut off disc for stainless steel and rotate it. The hardness and hardness of the grinding wheel are judged according to the feeling and the depth of the insertion. This method is completely based on the experience and feeling of the inspector. There is no quantitative data and the precision is low. It is difficult to quantify the graded hardness.

  Similar to this method, there is Japan's Daeue test method, which is applied in Japan, Canada, and Taiwan. The Da Yue test method belongs to the mechanical cone measurement method and is developed on the basis of the hand cone method. This method can also be applied to rough China cut off disc that cannot be measured by sand blasting.

Due to the mechanical structure, the force, the rotation angle and the like are basically stabilized, the measurement reliability is improved, and the measurement result can be quantified, which is a reasonable measurement method. Similar to the hand cone method, there is also a scratch measurement method: this aspect is similar to the definition method of Mohs hardness. In practice, a grinding wheel of known hardness is used to draw another grinding wheel of unknown hardness, according to how much the abrasive falls off. To judge the hard and soft. Japan developed it into a mechanical scratch test method, which can achieve quantitative measurement of the fixed force. The former Soviet abrasive abrasives standard stipulates that the hardness of rubber abrasives is determined by the pressure cone method. In these methods of measuring hardness, the measurement force depends on both the strength of the bonding agent and the toughness of the abrasive, so the measured hardness does not reflect the inherent hardness characteristics of the grinding wheel.

add to favorites Electric spark dressing wheel Pc  
No Picture
The principle of electric spark grinding wheel dressing is in the process of electric spark shaping, standard cut off wheel for metalbecause the second wheel does not touch the tool electrode, the grinding wheel does not It is protected by the repairing force, thus avoiding the occurrence of vibration phenomenon during the shaping of the contact dressing method, so that a higher degree of plasticity can be achieved. And the integrity of the electric grinder sandboxing method is used to make use of the principle of electric machining. The surface appearance of the demon after the grinding wheel is also used. The shape of the wheel surface obtained by his orthopedic method is different. In the electric spark finishing process, the iron-based binder second wheel and the tool electrode valve are generated The spark discharge pulse forms a discharge pit on the surface of the grinding wheel. During the repeated discharge process, the discharge pits overlap each other, and the grinding wheel is gradually repaired. When the single spark discharge energy is appropriate, the higher the frequency of discharge, standard cut off wheel for metalthe better the grinding amount of the grinding wheel. EDM grinding wheel trimming has the following characteristics: 1. It can be in place, online trimming, and ensure grinding precision, easy to operate. 2. Suitable It is used for any grinding wheel with conductive material as the combination of Hu. It is suitable for the dressing of small diameter and very thin grinding wheel. 3. It is convenient and practical. Now it is fast and high-precision trimming of the forming grinding wheel. In addition, compared with other grinding wheel dressing methods, EDM trimming has low cost and is easy to implement. Less process parameters, easy adjustment, etc.
add to favorites Use of chipboard in cut off disc for stainless steel Pc  
No Picture
In the processing of grinding machines, cutting machine tools or portable power tools, the wheel guards are one of the important means to protect the personal safety of the operators. Moreover, the wheel guards not only protect the personal safety of the operators, but also improve them through improvement. An important entry point for processing efficiency.
Protection problem The protective cover is the most important protection device of the grinder. Its function is: When the grinding wheel is damaged due to work, it can effectively cover the grinding wheel fragments and ensure the safety of personnel.
The shape of the wheel guard is round and square, and the maximum opening angle is not allowed to exceed 90°; the material of the shield is steel with a tensile strength of not less than 415 N/mm2. When replacing a new grinding wheel, the protective cover should be installed firmly and reliably, and the protective cover should not be dismantled or discarded.
The existing protective cover is usually composed of a simple cover, and an opening for the cut off disc for stainless steel machine is opened on the upper side, and the debris is prevented from flying out from the periphery during the processing. However, since the residue remains in the protective cover after being blocked by the protective cover, it takes a long time, and a lot of residue and dust are accumulated in the protective cover. In order not to hinder the cutting work, the construction personnel also need to regularly clean the residue. Cutting operations cause a lot of inconvenience and affect work efficiency. In addition, too much residue in the shield can easily spill to the outside, affecting the surrounding environment, and too much residue can easily cause secondary splashes during the cutting process and damage the construction personnel.cut off disc for stainless steel
The chipboard should have sufficient strength and be adjustable;
The chipboard should be firmly mounted on the protective cover, and the adjusting bolts are complete and fastened;
v The chipboard should have a certain strength, which can effectively block the wheel fragments and splashing Mars;
The width of the chipboard should be greater than the width of the outer circumference of the shield;
The chipboard should be able to adjust the gap with the circumferential surface of the grinding wheel with the wear of the grinding wheel, and the gap between the two is less than or equal to 6MM;
When the angle of the opening of the grinder guard below the center plane of the grinding wheel spindle is less than or equal to 30 degrees, the chip guard plate may not be provided;
add to favorites Abrasive belt grinding mechanism Pc  
No Picture

Abrasive belt grinding is a special form of grinding tool for sanding belts, which is tensioned by means of a tensioning mechanism, and the driving wheel is moved at a high speed, and under a certain pressure, the abrasive belt is brought into contact with the surface of the workpiece to realize The entire process of grinding. Broadly speaking, abrasive belt grinding and grinding wheel grinding are also high-speed micro-edge cutting tools the cumulative effect of micro-cutting of abrasive grains, so the grinding mechanism is basically the same. However, due to the different composition and use of the belt itself, the grinding of the belt is different from the grinding of the 12 inches cut off wheel in terms of the grinding mechanism and its comprehensive grinding performance. 1) Grinding wheel grinding is rigid contact grinding, while belt grinding is elastic contact grinding, even in the case of using inelastic steel contact wheels, because the substrate that makes up the belt is sticky. The knots have a certain elasticity, not to mention the elastic rubber as the contact wheel in most cases. Because of this, the belt grinding has the same sliding, ploughing and cutting effects as the grinding wheel, as well as the pressing action of the abrasive grains on the surface of the workpiece, and causes plastic deformation, chill layer change and surface tearing. And a combination of thermoplastic flow caused by friction causing the temperature of the contact point to rise. Therefore, from this point of view, abrasive belt grinding has multiple effects of grinding, grinding and polishing. This is also the reason why the surface quality of the abrasive belt is ground.12 inches cut off wheel On the other hand, due to the elastic grinding characteristics of the belt, the length of the belt in contact with the workpiece in the grinding area is larger than that of the grinding wheel, and the number of abrasive grains participating in the grinding is large, and the load of the single abrasive grain is applied. Small and uniform, the abrasive particles are damaged. The wear ratio of the entire belt (the ratio of the amount of grinding material removed to the amount of belt abrasive consumption is called the grinding ratio, and the reciprocal of the grinding ratio is called the grinding ratio) is much smaller than that of the grinding wheel. 2) The distribution of the abrasive grains on the grinding surface is disorderly and irregular. In actual grinding, the abrasive grains are cut with a large negative rake angle, a small relief angle or even a negative relief angle. The cutting conditions are very bad. The abrasive belt is different. The abrasive material of the abrasive belt is specially manufactured. The geometry of the abrasive grain is often in the shape of a long triangle, and it is made by a series of advanced techniques such as electrostatic sanding. The size and distribution of the abrasive grain are uniform and the contour is good. And the sharp-edged outward form is implanted on the surface of the abrasive belt substrate, and the portion where the rubberized layer is exposed is more. Therefore, the abrasive grains of the abrasive belt are sharper than the abrasive grains of the grinding wheel, the cutting conditions are good, the material deformation during grinding is small, the cutting rate is high, the grinding force and the accompanying grinding heat are small, and the grinding temperature is low. 3) The grinding wheel is filled with bonding agent, and the chip space is small. The belt space between the abrasive belts is generally at least 10 times larger than that of the grinding wheel. In addition, the abrasive grains have a high contour, so the effective cutting area of ​​the abrasive belt is large, the cutting ability is stronger than the grinding wheel, and the grinding debris can be taken away at any time. Rarely remains on the surface of the belt to cause clogging without increasing the frictional heat and the temperature in the grinding zone is low. 4) The circumference of the belt can far exceed the circumference of the grinding wheel from the design point of view, which makes the belt have a good heat-dissipating area during grinding and can pass the suspended part of the belt. The contact part of the contact wheel, the tensioning wheel, the pressing plate and the like 〉 the oscillation during operation, the grinding debris stuck on the abrasive belt is naturally shaken off, further reducing the phenomenon that the abrasive grains are stuffed, thereby reducing friction and heat generation, which is also One reason for the low grinding temperature of the belt. It can be seen that the processing mechanism of abrasive belt grinding is a more complicated form which is the same as grinding wheel grinding and different from grinding wheel grinding. This is the theoretical basis and the fundamental starting point for analyzing and understanding the grinding mechanism of abrasive belt.

add to favorites Best place to buy RuneScape gold on RSgoldfast Pc  
No Picture
Like our youtube videos or facebook, get more off & coins. Such as OSRS gold, RuneScape gold and more, please go to: https://www.rsgoldfast.com/ Thus, the founders gave check it themselves the opportunity to largely transform the world of this game, offering new or thoroughly changed locations and opponents.After all, the overall concept of fun remained roughly unchanged. Users re-engage in the areas of adventurers who roam the less or more dangerous lands, perform tasks, fight creatures, develop their abilities gain gear, participate in craftsmanship, and battle against each other in PvP style. The changes to the first can be seen from the world of the game. The developers gave up the 2D framework to get a isometric view. Nevertheless, the title retains its artistic direction, characterized by a manga-fairy-tale style and a bright palette of colors.I have to say that it promises to be a very long and exciting adventure for a long time, if I had to assess the match on the grounds of a couple hours of gameplay. Just the Minecraft appearance of the cheap OSRS gold surroundings detriments me along with the camera is chained in 1 place. I associate a little with something between Cubic Castles and Portal Knights, with the distinction that in both matches the camera was more notable than in MS2 (when the graphics were like at the very first cinematic, I would be like a little child). But I can tolerate it, at the drought grade and you have to grab something. The upside for me is your timeless character collection.
add to favorites Turn scrap into profits by sand and stone crusher Pc  
No Picture

Granite and marble are natural decorative stone, applied to building walls, floors, countertops and other decorative aspects through processing by sand and practical stone crusher in stone factory. Although some artificial stone are in the competition for the decoration market, but in the social pursuit of quality, natural stone will still be able to appeal to more peoples affection.

Processing complete granite countertops by sand and stone crusher in stone factory is from the necessary process of cutting and polishing of blocks, which generates a lot of scrap and stone chips, even some bad blocks with low value. These chips can be bought by construction companies as base material, and the scraps, can be enriched and crushed with sand crusher and stone crusher equipment, for production of higher-value mechanism sand.

There are two viable options for production of higher-value mechanism sand with scraps: 1. Purchase a large gravel sand production line to process waste scraps and rock, and at the same time we can also purchase other stone factory waste, so that we can create a handsome profit; 2. Purchase a small sand making machine just for waste recycling of our stone factory, the profits will be lower, and investment will be small, too.

Anyway, scrap is a kind of resource, we cannot waste it. Therefore, we should combine the local environment, to find a way to process scraps with by sand and stone crusher, for creating the second profit point for stone factories.

add to favorites Mixing and ingredients for grinding wheels Pc  

The ingredients and mixes for the production of cut off disc for stainless steel are the process of weighing and mixing the blanks according to the regulations to ensure the quality of the grinding wheel.
One. The batching scale is normally used with a platform scale, a cut off disc for stainless steel weighing scale, and an automatic scale.
The scale of the platform is expensive, the tolerance is small, and there is no one thousandth of the theoretical weighing. It is reliable and easy to operate. However, it is difficult to achieve automation for medium and small furnaces.
The weighing speed of the weighing car is fast, and the consumption can be satisfied with less weighing car. The investment is less, but the lever blade is easy to be blunt due to the absence of breakage during operation, and the weighing error is suitable for large-scale furnace production.
The automatic scale can realize automatic operation, can prevent natural errors, and has large investment, which is suitable for large furnaces.
Two. Mixing equipment
Most of the mixing equipment uses a concrete mixer.
(1) Coercive concrete mixer Mixing uniformity, high consumption rate, good airtightness, no easy dusting, easy automatic domination, long service life and good reliability. Suitable for large, medium and small furnaces.
(2) Drum-type concrete mixer The price is noble, the reliability is good, the consumption rate is high, and the service life is long. However, it can not be sealed, the dust is large, the mixing material is uneven and uniform, and it is not recommended.
(3) Stress concrete mixer The specifications are shown in the table. It is known to have two types in the long run and can be selected according to the consumption.
three. Mixing process

(1) The mixing blades of the mixer should maintain high quality, often check the wear and tear, and find that the achievements are timely repaired.
(2) Appropriate addition of water to the raw materials and medicines to maintain a certain amount of water in the mixture, and to prevent the lack of carbon in the transportation process due to the dust.

add to favorites Maintenance measures for standard cut off wheel for metal Pc  

thin flat cutting disc is made of resin fiber material, which is not easy to be broken, safe to use, and the cutting performance is particularly remarkable. It is most suitable for cutting high hardness materials such as stainless steel, titanium alloy, nickel alloy, general metal material, unquenched steel, cast iron, alloy cast iron, carbon steel, alloy tool steel, quenched steel, castings and hot brittle materials. It has two types of dry and wet cutting methods, which makes the cutting precision more stable, and its cutting is not black and beautiful. It is characterized by a small load on the machine, fast cutting and durability.

    Nowadays, this cutting piece is often used for the cutting of stainless steel pipes, capillaries, glass tubes, quartz tubes, automobile exhaust pipes, brake wires, tungsten wires, molybdenum wires, copper wires and other pipe and filaments, and it is for special steel. The cutting and the slotting of the workpiece have a good effect. In order to extend the service life of stainless steel special cutting blades, it is necessary to carry out corresponding maintenance. From the relevant industry, we have learned that the common maintenance measures for high performance cutting discare as follows:

1. When the cutting piece is no longer sharp and the cutting surface is rough, it must be repaired in time. Grinding does not change the original angle and destroys the dynamic balance.
2. If the cutting piece is not used immediately, it should be laid flat or suspended by the inner hole. The other pieces or feet should not be stacked on the flat saw blade, and attention should be paid to moisture and rust.
3. The inner diameter correction of the cutting piece and the processing of the positioning hole must be carried out by the factory. If the processing is poor, it will affect the product use effect, and may be dangerous. The hole expansion principle should not exceed the original hole diameter of 20mm in order to avoid affecting the stress balance.
In short, only keep in mind the maintenance measures of the above special stainless steel cutting blades, in order to make it better extend its service life.

add to favorites Grinding wheel outer spherical surface and double end Pc  
No Picture
When grinding, the axis of the grinding wheel should be equal to the axis of the workpiece to ensure the roundness of the spherical surface. The error of the contour can usually be judged based on the grinding pattern. If the surface of the ball is convex, it indicates that the grinding wheel is grinding in the lower half of the grinding wheel, that is, the center of the grinding wheel is lower than the center of the workpiece. At this time, the center position of thethin abrasive cutting disc for metal should be adjusted so that it is equal to the center of the workpiece until it is ground. The surface of the sphere has a cross-web pattern. The error is required to be within 0.003-0.004mm.
When grinding the outer spherical surface, the grinding wheel frame should be rotated at a certain angle, so the trimming of the inner hole size of the grinding wheel should be completed before the machine tool is adjusted. After the grinding wheel is blunt in the grinding process, it is not necessary to trim the inner hole. It is only necessary to trim the end surface of the grinding wheel with a sand bar, so that the grinding wheel can be restored sharply and the inner hole size of the grinding wheel can be kept unchanged. After the grinding wheel is blunt, it should be repaired in time to ensure the quality of the processing.thin abrasive cutting disc for metal Since the grinding wheel axis and the workpiece axis cannot be absolutely equal when the spherical grinding is performed, a small step is generated on the workpiece, which affects the accuracy of the workpiece. At this time, a center hole of less than 1 mm can be drilled at the top of the spherical surface to avoid.
When grinding on both sides, the two grinding wheels cannot be adjusted to parallel position
The two grinding wheels should be adjusted to an inclined angle to form a thick, fine, and light-grinding zone between the grinding wheels. The size of the feed port should be 2/3 grinding allowance for the finished product size, and the size of the discharge port should be the finished product size.
In double-face grinding (straight-through feed), the parallelism of the workpiece cannot be ignored.
1) If the accuracy of the perpendicularity of the double-face grinding machine is too poor, the accuracy of the parallelism of the workpiece will be low. The grinding head should be overhauled and calibrated to make it accurate.
2) If the feeding or discharging guide is not parallel to the grinding wheel, the parallelism of the workpiece will be excessive. The feeding and discharging layers should be adjusted.
3) If the feeding speed is not uniform during grinding, the parallelism of the workpiece will be too bad. The feeding mechanism should be checked and adjusted.
add to favorites Grinding wheel outer spherical surface and double end Pc  
No Picture
When grinding, the axis of the grinding wheel should be equal to the axis of the workpiece to ensure the roundness of the spherical surface. The error of the contour can usually be judged based on the grinding pattern. If the surface of the ball is convex, it indicates that the grinding wheel is grinding in the lower half of the grinding wheel, that is, the center of the grinding wheel is lower than the center of the workpiece. At this time, the center position of thethin abrasive cutting disc for metal should be adjusted so that it is equal to the center of the workpiece until it is ground. The surface of the sphere has a cross-web pattern. The error is required to be within 0.003-0.004mm.
When grinding the outer spherical surface, the grinding wheel frame should be rotated at a certain angle, so the trimming of the inner hole size of the grinding wheel should be completed before the machine tool is adjusted. After the grinding wheel is blunt in the grinding process, it is not necessary to trim the inner hole. It is only necessary to trim the end surface of the grinding wheel with a sand bar, so that the grinding wheel can be restored sharply and the inner hole size of the grinding wheel can be kept unchanged. After the grinding wheel is blunt, it should be repaired in time to ensure the quality of the processing.thin abrasive cutting disc for metal Since the grinding wheel axis and the workpiece axis cannot be absolutely equal when the spherical grinding is performed, a small step is generated on the workpiece, which affects the accuracy of the workpiece. At this time, a center hole of less than 1 mm can be drilled at the top of the spherical surface to avoid.
When grinding on both sides, the two grinding wheels cannot be adjusted to parallel position
The two grinding wheels should be adjusted to an inclined angle to form a thick, fine, and light-grinding zone between the grinding wheels. The size of the feed port should be 2/3 grinding allowance for the finished product size, and the size of the discharge port should be the finished product size.
In double-face grinding (straight-through feed), the parallelism of the workpiece cannot be ignored.
1) If the accuracy of the perpendicularity of the double-face grinding machine is too poor, the accuracy of the parallelism of the workpiece will be low. The grinding head should be overhauled and calibrated to make it accurate.
2) If the feeding or discharging guide is not parallel to the grinding wheel, the parallelism of the workpiece will be excessive. The feeding and discharging layers should be adjusted.
3) If the feeding speed is not uniform during grinding, the parallelism of the workpiece will be too bad. The feeding mechanism should be checked and adjusted.