|add to favorites||Grinding of metal cutting||l/mile||No||$|
|Grinding is generally used for semi-finishing and finishing. The machining accuracy can reach IT5-IT6, the processing roughness can be as small as Ra1.25-0.01μm, and the mirror grinding can reach Ra0.04-0.01μm. Grinding is often used for hard materials such as hardened steel, heat resistant steel and special alloy materials. The machining allowance for grinding can be small. In the case of rough preforming processes such as die forging, die stamping, and precision casting, grinding is an important processing method to directly improve the accuracy of the workpiece. From the different combinations of the workpiece and the grinding tool in relative motion, various different grinding methods can be produced. Forming grinding and profile grinding are becoming more and more widely used due to the increasing use of forming surfaces for a wide variety of mechanical products. Gear grinding methods are mainly form grinding and development grinding. When grinding, the “tool” (abrasive tool) used is different from the tool used in general metal cutting, and the cutting speed is very high, so the grinding mechanism and the fiber cutting disc Chinese supplier are very different. The following is a brief description of grinding. Several fundamental issues in the process. An abrasive grinding process undergoes a process of sliding (elastic deformation), ploughing (plastic deformation) and cutting (forming chips, flowing out in front of the abrasive grains) to form thermal stress and deformation stress on the surface of the workpiece. The slippage, ploughing and cutting of the abrasive particles on the cutting surface are related to the condition of the abrasive particles and the nature of the material being processed. The above three processes are related to the speed of the aluminum abrasive cutting disc. The higher the cutting disc speed, the smaller the elastoplastic zone. The elastoplastic zone is also related to the actual amount of grinding of each abrasive grain. When the cutting disc is being ground, the partially blunt abrasive grains can automatically fall or break under a de facto condition, so that the cutting disc maintains good grinding performance. Grinding process—The essence of metal grinding is the surface of the metal to be ground by the workpiece, which is deformed in the instant of numerous abrasive grains, deformed by friction, and then turned into wear debris, and forms a smooth process. The metal grinding process can be divided into three stages: the abrasive grains indicated by the cutting disc are in contact with the workpiece material, and the elastic deformation becomes the first stage, the abrasive grains continue to cut into the workpiece, and the workpiece material enters the second stage of plastic deformation, the material The grain is slipped. The plastic deformation is continuously increased, and the layer material is ground when the force reaches the strength limit of the workpiece. The resulting cracking, that is, into the third stage, and finally cut off. The whole process of grinding is manifested by the action of force and heat. The grinding force—the cutting action and the friction between the cutting disc and the workpiece during grinding, acts on the cutting disc and the workpiece, respectively. The opposite force, the force of this interaction is called the grinding force grinding heat - the heat generated during grinding is more than turning, the milling is large, the heat is transferred into the cutting disc, the grinding is carried away or taken away by the cutting fluid, but the cutting disc It is a poor conductor of heat, so almost 80% of the heat is transferred into the workpiece and the grinding debris. The instantaneous high temperature in the grinding area can burn the surface of the workpiece and pay special attention to the cooling of the workpiece. Cutting fluids - also known as coolants in the past, are mainly used to reduce the degree of grinding heat and reduce friction during bulk grinding. The main function of the cutting fluid is: cooling, lubrication, cleaning, rust prevention. During the cutting process, the cutting fluid is directly poured into the place where the cutting disc for stainless steel and the workpiece are in contact to achieve the function of the cutting fluid to ensure the quality of the part processing.|
|add to favorites||These three efficient grinding are worthy of attention||l/mile||No||$|
|High speed grinding High-speed grinding is a process that increases the removal rate of grinding and the quality of grinding by increasing the speed of the China cutting disc for metal. High speed grinding has the following advantages: (1) Under a certain unit time grinding amount, when the cutting wire speed is increased, the cutting thickness of the abrasive grains is thinned, so that the load of the single abrasive grain is reduced, and the durability of the diamond cutting disk is improved; (2) Reduction of surface roughness of grinding: After increasing the linear speed of the diamond cutting disk, the cutting thickness of the abrasive grains is thinned, so that the relative feed amount of the cutting disk becomes smaller and the roughness is also reduced. (3) The normal grinding force is reduced and the accuracy of the workpiece is improved. 2. Slow-feed to deep deep grinding Slow-feeding Large-depth deep grinding is also called deep groove grinding or peristaltic grinding. It is ground with a large grinding depth (up to 30mm) and a very low table feed (3-300mm/min). The required dimensional accuracy can be ground by one or several passes. The advantages of slow-feeding and deep-depth grinding are: (1) When the retarding is applied to grinding. The cutting disc and the outer edge of the workpiece are only contacted once or several times, and the chance of impact is less than that of ordinary reciprocating grinding, which can extend the durability of the cutting disc and maintain its forming precision. (2) The workpiece feed speed is very low during deep grinding, so that the radial feed rate of the cutting disc is low and the radial wear is relatively small. Conducive to rough, fine grinding of complex shaped workpieces. (3) The cutting depth of the progressively-grinding cutting disc is about 1000 times larger than that of ordinary grinding, and the grinding force is increased by 2-4 times (under the same metal removal rate) than that of ordinary grinding. 3. Abrasive belt grinding uses high-speed moving abrasive belts as grinding tools. The method of grinding various surfaces is called belt grinding. The advantages of abrasive belt grinding are: (1) The production efficiency is high, the abrasive grains on the abrasive belt are sharp and the cutting amount is large; the sand bandwidth, the grinding area is large, and the productivity is 5-20 times higher than that by the high quality cutting disc supplier; (2) The grinding energy consumption is low, because the belt is light in weight, the contact wheel and the tensioning wheel are small in size, and the high-speed moment of inertia is small, so the power loss is small; (3) Good processing quality, can guarantee constant speed work, less heat, no need to trim, sharp abrasive grain, good heat dissipation condition of the abrasive belt, high precision and small surface roughness value. (4) The belt is soft and can be applied to the forming surface for grinding, which is suitable for grinding various complicated shapes. The disadvantages of abrasive belt grinding are: The belt is consumed quickly, the belt grinding cannot process small diameter holes, blind holes, and the stepped outer circle and gears cannot be machined. Of course, when using high-speed grinding, it is necessary to confirm that the working speed of the machine tool must be lower than the safe use line speed of the cutting disc, and the use of slow-feeding to deep-depth grinding also ensures the safety during grinding.|
|add to favorites||Abrasive companies keep pace with the times||No||
Adapting to the trend is to keep pace with the times, the needs of abrasives companies are constantly changing, China supply 7" Cut off disc The market update is also promoting the pattern of abrasive companies. Small abrasives companies must have industry vision, follow national policy trends, and explore new ways to explore the future of the company.
1, adjust the residual structure, streamline the processing mode to suppress excess capacity.
Achieving the ability to create manufacturing capabilities when manufacturing standard cutting discs, producing standards with innovative Cut off disc for stainless steel products, to achieve this goal, the first thing to have a business development strategy. We all know that whether it is industry development or enterprise progress, we must formulate strategic development plans. This is the goal of advancement to prevent blind and more mad development. After all, the production of low-end abrasives is in a state of overcapacity. Only by completing the tasks of structural adjustment and transformation of development methods, strive to develop healthily and rapidly. Through the whole industry, we will cultivate a group of large and powerful enterprises and a small number of small and specialized small giant enterprises to enhance the core competitiveness of the industry.
2. Enhance the intensity of independent innovation and research input.
And actively explore joint research on production, learning, research, and new methods. Through the development of the brain, we can introduce technology and talents, and actively develop high-end products. The focus of grinding is on deep processing product development. To meet the rapid growth of the photovoltaic industry and engineering ceramics and refractory market demand.
3. Promote green manufacturing.
Green manufacturing refers to modern manufacturing models that consider environmental impact and resource efficiency while ensuring product functionality, quality and cost. It is the development trend of the mechanical manufacturing industry in the 21st century. It is an application that realizes energy conservation and recycling of resources, minimizes the impact on the environment, and establishes an important way of resource conservation and environmental friendliness.
Green manufacturing includes energy conservation and emission reduction. This work is a more prominent problem in the abrasives industry. Although the abrasives industry has not yet been included in the “two highs and one capital” industry, the National Development and Reform Commission's abrasive grinding industry includes the survival of enterprises. At the bottom line, our business is to learn new technologies, such as energy conservation and emission reduction, new technologies, the development of circular economy, and the full implementation of green manufacturing.
|add to favorites||Smooth Running of Sand Maker||No||
In the sand production line, the use of mining crushers makes the sand making of bulk materials easier. The use of sand maker finally plays a role of shaping the crushed materials. After a sand production analysis, we find some necessary factors that determines the high-performance production. Only by realizing these conditions can we ensure the highly efficient and smooth running of the production of sand making machine.
Here, the experts from Zenith Machinery will introduce the factors that ensure the highly efficient and smooth running of sand maker to you in sequence.
1.In the setting of feeding device of sand maker, we must adopt relatively unified process specifications so as to reduce the difference in the feed grain size to the minimum. In such condition, the running speed of Aggregate Crushing Machine is very high. Besides, with the increase of inertia, the fluency that the inertia could reach will be very high.
2.The production line of newly high-performance sand maker need control the grain shape. We have adopted incentive-based computer control system to control the grain shape. The advantages of this method is very independent and automatic. If the grain shape cannot meet the requirement, it cannot be gone out of the crushing chamber.
3.In the cavity design of the sand maker, the structural requirement asks us to do just right for the control of the grain shape. Not all grain control theories can be applied to the design of working chamber of sand maker. After contrasting excellent manufacturing process, we find that U-cavity sand maker is the most suitable for this production need.
|add to favorites||The secret to choosing an super thin 115 cutting disc?||l/mile||No||
|For the super thin 115 cutting disc , I don’t know if you know it. It is made of abrasive wheel and made of abrasive and binder resin. It is widely used in ordinary steel, stainless steel and non-metal sheets, and it is based on material. Different types can be divided into fiber resin cutting sheets and diamond cutting sheets, and high-speed resin cutting sheets are also used in many industries because of their high efficiency, convenience, economy and other unique properties, but then some problems have arisen. How to choose the right super thin 115 cutting disc, what better way to do it? First, when the dicing sheet is used, it is selected depending on the occasion in which the dicing sheet is used. The cutting pieces can be divided into cutting and grinding according to the way of use. Most of the cutting machines are fixed mobile, and the power of the machine has high power and low power. Cutting speeds are also available in high speed cutting and normal cutting. In addition, the materials to be cut during cutting are various, such as stainless steel, titanium alloy, ordinary steel, viscous metal, high carbon steel, non-metal, and the like. The performance requirements of the cutting piece are different for different occasions, so it is important to choose a reasonable cutting piece. We have to choose the cutting piece according to the occasion we use, which can increase the safety factor, improve work efficiency and reduce our use cost.|
|add to favorites||Grinding wheel particle size selection||No||
The particle size of the grinding wheel is to crush, roll and process the smelted crystal block, and then screen the fine powder of different sizes of particles, wherein the particle size is represented by a number, which is called particle size. The particle size is generally expressed by the number of the sieve, that is, the sieve hole per inch length, and the larger the number, the smaller the abrasive grain.
thin flat cutting discGranular choice
The wheel size is a measure of the size of the abrasive particles. The choice of grinding wheel size directly affects the surface roughness and grinding efficiency of the workpiece. In general, the grinding efficiency is high when grinding with a coarse-grained grinding wheel, but the surface roughness of the workpiece is poor. When grinding with a fine-grained grinding wheel, the surface roughness of the workpiece is good, but the grinding efficiency is low. In short, under the premise of meeting the surface roughness requirements of the workpiece, the abrasive tools with coarser grain size should be selected as much as possible to ensure high grinding efficiency.
Usually the choice of grinding wheel size is determined according to the grinding needs. usually:
Rough grinding: steel ingots, forged castings, leather wood, cut steel billets, etc., for 12#. 30#
Semi-finishing: used for rough grinding of plane, outer circle, inner circle, centerless grinding, etc., applicable to 36#
General fine grinding: used for outer circle, inner circle, plane, centerless, tool grinding machine and various special grinding machines, etc., applicable to 60#
For fine grinding, honing, threading, etc., for 120# one W20
Super fine grinding: fine grinding, super fine grinding, mirror grinding, etc., for W20
|add to favorites||The 4 inches China grinding disc factory introduces the structure of the grinding disc?||4.00 l/mile||No||
|The 4 inches China grinding disc is a commonly used grinding disc tool on the market. With the expansion of the market share, the use and sales of the grinding disc are more and more, so the structure of the grinding disc is not understood by many users. Today, 4 inches China grinding disc factory will give you a brief introduction to the structure of the grinding disc. The grinding disc frame adopts a combination of upper steel plate welding and a lower cast iron bracket, and the grinding roller is mounted on the cast iron lower bracket beam. The self-sustaining of the grinding stress is beneficial to keep the rolling distance stable and reduce the noise, and the grinding rolls are horizontally arranged to facilitate the entry of the material into the grinding roll. The grinding disc is easy to be raised, and the material to be ground is not easily splashed outward. The grinding disc has a novel grinding structure, convenient and flexible operation, stable rolling distance, good grinding effect and unique grinding roller bearing structure. Reliable positioning. The operation is stable, and the roller can be quickly changed. The fast and slow rollers are driven by a three-wheeled crescent belt with a correcting deviation. Safe and reliable to use. The grinding disc has a grinding and suction device, and the self-flowing material can also be ground. The pneumatic system of the grinding disc has a unique structure and a simple gas path. The P-grinding disc has a low failure rate, and the four-piece housing is flipped over for a fully enclosed lift. The motor is placed inside the casing and has a compact structure. nice appearance. The operation is safe and reliable.|
|add to favorites||Cutting plate implementation effect||l/mile||No||$|
|Implementation of preventive measures After taking various preventive measures, the comparison of the frequency of various types of faults is shown in Table 1. It can be seen from Table 1 that after taking preventive measures, the number of occurrences of fiber cutting disc Chinese supplier is significantly reduced, but the annual average number of different types of faults is significantly different. The annual average number of failures caused by “long storage time” has increased significantly. This is due to the further increase in the time of partial cutting of the disc. Therefore, when using this part of the cutting disc, the existing protective measures must be strictly taken. 2 Implementation of protection measures After taking various protective measures, the consequences of cutting discs are shown in Table 2. It can be seen from Table 2 that after the protection measures are taken, the personnel and equipment are protected, no accidents have occurred, the damage of the equipment is reduced, and the cumulative failure time is significantly reduced. The frequency of the explosion of the original grinding machine cutting disc was higher, the damage to the equipment was more serious, and the accident of debris injury occurred. After taking certain protective measures, the average number of failures of the cutting discs was reduced by 58%, and the average annual failure time of the equipment caused by the explosions was reduced by 80.7%. There was no further accident of cutting the disc fragments.|
|add to favorites||Problem with the cutting disc during the installation operation||l/mile||No||$|
|Cutting plate pressure plate lock is not tight Due to the poor installation operation, the feature of the burst is that thehigh quality cutting disc supplier has obvious wear marks at the contact point of the cutting disc. The cutting disc pressure plate is not tightly locked, and the relative rotation between the cutting disc and the cutting disc pressure plate causes frictional heat to cause the temperature at both ends of the cutting disc to rise rapidly, which is the cause of the explosion. The thickness of the cutting disc is L1. Under the action of the screw, the step faces of the cutting disc pressing disc and the cutting disc holder are respectively in contact with the end faces of the cutting disc, and the locking surface is locked. At this time, the outer taper surface of the disc holder and the cutting disc are pressed. There is a gap S between the cones in the disc, and when S>0, it is ensured that the cutting disc is locked. Detecting the cutting disc pressure plate and the cutting disc holder in the event of a burst failure: assembling the cutting disc pressure plate and the cutting disc holder without installing the cutting disc, screwing in the screw, and installing the cutting disc pressure plate in place. The gap value between the measured cutting disc pressure plate and the cutting disc holder is L=124.7 mm, and the thickness of the cutting disc whose actual failure occurs is L2=124.4 mm, L2<> Improper installation method Due to the non-parallel between the working surface of the cutting disc and the working surface of the cutting disc holder, the locking torque of the fastening screw is uneven, etc., the force of the cutting disc is uneven, and the overturning moment is generated, which causes the cutting disc to tilt and the cutting disc The contact area with the cutting disc pressing plate and the cutting disc holder is reduced, and the relative rotation between the cutting disc pressing plate and the cutting disc holder is easy to occur during operation, thereby causing heat and explosion. Long-term screw locking torque is uneven, which will result in uneven wear of the cutting disc pressure plate and the working surface of the cutting disc. In this case, even if a qualified cutting disc is used and the correct mounting method is used, a burst will occur.|
|add to favorites||Crusher plant design for underground work||No||
To fix a principal crushing plant that has been excavated and built underground is complicated and costly; therefore, careful planning pays good dividends. This paper looks at different aspects of plant design including capacity, installation, layout, maintenance and safety.
This paper concentrates on hard rock applications, however, a few of the findings will apply and also to crushing softer minerals using other than compression crushers, for instance, impact crushers, sizes, etc.
Real estate in an underground mine is usually with a prime cost; therefore, the design of primary crushing plants faces more limitations compared to surface where you could say the sky’s the limit. However, the key crushing and transportation from the ore to come to light tend to be dimensioned so that they define the capacity of the mine; whatever limits the functionality with the plant may limit the output of the mine.
Required capacity defines the dimensions and type of crushing equipment along with the variety of parallel crushers or plants required to meet the mine production rate. Most suppliers and EPCM providers have simulation and calculation tools for that basic equipment and capacity selection, however, especially underground, the choices criteria gets wider, usually in the direction of securing production capacity having a larger safety margin.
Jaw crushers would be the most typical solution if the throughput is less than 1000 tonnes hourly, depending somewhat on the scalping solutions, which is discussed later. Above 1000 tph, primary gyratory crushers begin to look interesting; there aren’t any exact boundaries but above 2000 tph, jaw crushers get rare except in the parallel plant layout. Generally jaw crushers are in the clear majority in underground crushing.
Capacity depends also around the feed size and material type unveiled in the flower and required product curve. Typically, the first stage of crushing really has two functions:To get the material small enough for transporting out of the mine To get a suitable product curve for an additional stage of combination
In any case, the top size of the information eventually ends up typically in the range of 300 ?¡ìC 350 mm, which is great for belt conveyors and fits into most secondary crushers without causing process risks, to make this happen top size, the Construction Waste Crusher News setting is within the array of 200 mm or below, according to rock characteristics. The belt may be the way of transporting the crushed ore out of the mine but even when it’s not, there is certainly usually a conveyor somewhere within the materials handling process, so the requirements have to be met.
You will find mines where multiple stage of crushing takes place underground but mostly the lower cost and flexibility of surface construction result in only primary crushing being carried out underground.
Most underground mining methods produce a feed that’s finer compared to a normal open pit mine, leading to higher capacity through-plant; however, surprises do happen where there has to be a method to handle oversize feed material when the requirement occurs.
Planning the crushing plant for maintenance is an important part of achieving high process reliability and availability. Lifting requirements for the major components has been discussed above nevertheless it should also be noted that the routine maintenance includes lifting wear and spare parts, well located jib cranes or monorails will be the answer. In large crushers, perhaps the tools necessary for opening or tightening bolts can get bulky and benefit from creating a lifting device handy
|add to favorites||The high quality 9'' grinding wheel safety operation procedures||No|
|The general operation of the high quality 9'' grinding wheel: 1. Wear protective goggles when dry grinding or dressing. 2. Investigate whether the grinding wheel can be loose, whether there is any crack, whether the protective cover can be strong and reliable, and it is forbidden to start when the problem is found. 3. The front of the high quality 9'' grinding wheel is forbidden. The operator should stand beside the grinding wheel. 4. The rotation speed of the grinding wheel is forbidden. If you want to choose a reasonable amount of knife before feeding, you must delay the feeding. 5. When loading and unloading the workpiece, the grinding wheel should retreat to a safe position. 6. When the high quality 9'' grinding wheel has not retreated from the workpiece, the grinding wheel must not be interrupted. 7. When grinding the grinding wheel with diamond, the diamond should be held by the fixing frame, and the hand should be held for repair. 8. Vacuum cleaners must be indispensable and useful. 9. The dry grinding workpiece is forbidden to add coolant. If the wet grinding fluid stops, the grinding should be stopped immediately. At the end of the wet homework, the high quality 9'' grinding wheel should be idling for 5 minutes to lose the coolant on the grinding wheel.|
|add to favorites||Stainless steel grinding program||No||
Stainless steel is a type of metal that has a degree of corrosion resistance in the atmosphere or in certain corrosive media. Because of these advantages, it is widely used in different industries of the current society. Stainless steel grinding burns have been plagued by grinding. Briefly introduced the classification of stainless steel and the characteristics of stainless steel grinding, stainless steel grinding burns and solutions.
One: 7" cut off disc for stainless steel classification:
Martensitic stainless steel (common grades are 1Cr13, 2Cr13, 8Cr13, 1Cr17Ni2, etc.)
Ferritic stainless steel (common grades are 0Cr13, 1Cr14S, 1Cr17, 1Cr17Ti, etc.)
Austenitic stainless steel (common grades are 1Cr18Ni9Ti, 0Cr18Ni9, 1Cr18Ni9, etc.)
Precipitation hardening type stainless steel (common grades are 0Cr17NiCu4Nb, 0Cu17Ni7Al, 0Cr15Ni7Mo2Al, etc.)
It can be classified into a Cr system (SUS400), a Cr-Ni system (SUS300), a Cr-Mn-Ni (SUS200), and a curing system (SUS600).
Two. Features of grinding stainless steel:
1. Stainless steel has high toughness and high heat strength, while the cutting edge of the grinding wheel has a large negative rake angle. During the grinding process, the grinding debris is not easily cut, the cutting resistance is large, and the extrusion and friction are severe. The grinding force per unit area is very large, and the grinding temperature can reach 1000 ° C ~ 1500 ° C. At the same time, under the action of high temperature and high pressure, the grinding debris is easy to adhere to the grinding wheel, filling the gap of the abrasive particles, so that the abrasive particles lose the cutting effect. The type of stainless steel is different, and the condition of the grinding wheel is different.
2. The thermal conductivity of stainless steel is small, the high temperature during grinding is difficult to output, and the surface of the workpiece is easily burned and annealed. The depth of the annealed layer can sometimes reach 0.01 to 0.02 mm. Severe fracture deformation during the grinding process results in work hardening on the abrasive surface. In particular, when austenitic stainless steel is ground, the austenite structure is not stable enough, and martensite structure is likely to occur after grinding, and the surface hardening is severe.
3, stainless steel has a large coefficient of linear expansion, which is easily deformed under the action of grinding heat, and the size is difficult to control. This is especially true for thin walls and elongated components. Most types of stainless steel cannot be magnetized. In the case of surface grinding, the workpiece can only be clamped by mechanical clamping or special clamps. The workpiece is clamped to the side of the workpiece, causing deformation and shape or dimensional errors. protruding. At the same time, it also produces jitter and scale-like ripples during the grinding process.
|add to favorites||Cutting machine safety operation procedures||l/mile||No||$||
|First, preparation before use 1 cutting disc machine should be responsible for the person, often check to ensure normal operation. 2 When replacing the new cutting disc, the main power supply should be cut off. At the same time, check whether the cutting disc has cracks before installation. If the naked eye is not easy to distinguish, use a strong wire to lift the fiber cutting disc Chinese supplier, then tap it with a piece of wood. Listen to it. The metal sound is excellent, the dumb sound is bad) 3 cutting disc machine must have a firm and suitable cutting disc cover, the bracket should not exceed 5mm from the cutting disc, otherwise, it should not be used. 4 When installing the cutting disc, the nut should not be too loose or too tight. Check whether the nut is loose before use. 5 After the cutting disc is installed, it must be idling for 23 minutes to see if its operation is balanced and whether the protection device is properly and reliably. When the test is running, two staff members should be arranged. One of them should stand on the side of the cutting disc to start the cutting disc. Abnormal, the power is cut off immediately by another person at the power distribution cabinet. In case of an accident. 6 Where the user wears a protective goggle, the disc should not be facing the cutting disc but should stand on the side. When using the cutting machine, gloves are not allowed, and it is strictly forbidden to use a cotton yarn to wrap the tool for grinding. 7 Before use, check whether the cutting disc is in good condition (no cracks, cracks or disability). The cutting disc shaft is installed firmly and reliably. There is no debris between the cutting machine and the protective cover. If it meets the safety requirements, if there is no problem, then start the cutting machine.|
|add to favorites||Cutting machine safety operation procedures||l/mile||No||$|
|1. Wear tight protective clothing before the operation, fasten the cuffs, and the hem of the top should not be open. Do not wear gloves. Do not wear or change clothes around the machine, or cloth around the body to prevent the machine from being wounded. Female workers must wear safety helmets, and must not leave long braids. The scorpions should be placed in caps, and skirts and slippers should not be worn. Wear protective goggles to prevent iron splashes from damaging your eyes. 2. The base of the cutting disc machine must be firm and there must be no vibration during operation; the tightening thread of the high quality cutting disc supplier must be opposite to the working direction of the cutting disc, the locking cap should have a locking device, the screw is preferably fine, and the balance should be balanced during installation. Test, keep the shape and smooth when running, the two sides of the cutting disc should be clamped with the iron splint (the iron splint is not less than 1/2 of the diameter of the cutting disc), and the soft pad and the shaft should be lined between the iron plate and the cutting disc. A thick paper or insulation should be added between the cutting discs to make the pressure uniform. 3. Before use, the cutting disc must be inspected for defects, cracks, and whether the guard and the suction device are secure. When starting up, the person must stand on the side of the cutting disc, let the cutting disc idle for a few minutes, and confirm that the situation is normal before starting work. 4. It is the responsibility of the person to exchange the cutting disc. Do not hit with a hammer; when tightening the cutting disc clamping screw, apply even force. After the exchange, test the car first and work normally after it is working. 5. The cutting disc uses the highest speed and must not exceed the safe line speed specified by the cutting disc. 6. When using, it is necessary to hold the workpiece firmly, and the pressure should be uniform. It is strictly forbidden to hit the violent force and the force is too large. Do not grind bulky objects to prevent the cutting disc from bursting due to improper pressure. Small workpieces are clamped and clamped to prevent injury. A cutting disc must not be used by two people at the same time. 7. It is not allowed to grind hard gold-containing materials on ordinary cutting discs. It is forbidden to grind tough materials such as copper, lead, wood, and plastic. Grinding iron workpieces should be wetted with water to cool them. 8. It is not allowed to stack objects next to the cutting machine. After use, the power should be cut off in time to clean the work.|
|add to favorites||What is the economics of the T41 green cutting disc size?||l/mile||No||
|With the development of technology, the development and production of cutting discs are now more and more, and the T41 green cutting disc size is typical. How can the economic efficiency of the cutting disc be improved? The T41 green cutting disc size has less wear and tear, long service life and high grinding ratio. Under reasonable conditions, good economic results can be obtained, especially for materials that are difficult to process with ordinary abrasives, and the economic effect is better. Only with the continuous improvement of the hardness of metal products in the future, the cutting disc can continuously improve itself, in order to ensure the high cutting efficiency and the best economic effect of the cutting disc on different material workpieces. Now the Henan abrasive grinding industry is constantly starting in technology. Update, I hope to develop more good products.|
|add to favorites||What is the measure of abrasive grinding disc tools?||l/mile||No||
|The main components of the abrasive grinding disc tools are: main engine, motor, cutter disc and grinding disc, closing fan, induced draft fan, automatic feeder, vibrating screen, cyclone separator, dust removal device, electric control box, cooling pipe, etc. Flexible choice according to the situation. So what are the main two metrics for abrasive grinding disc tools? as follows: 1, stripping rate. When the abrasive tool is processing the material, the tool intercepts the ground material to determine. The stronger the crushing effect of the grinding disc on the material, the higher the stripping rate, and the smaller the amount of the sieve on the corresponding coarse screen, the more the amount of slag, heart and powder. 2, the powder rate The determination and calculation method of the powder extraction rate is similar to the stripping rate. The difference is that the sieve surface needs to be sieved with a corresponding sieve, the sieve material b is powder, the sieve material a is other products, and the measured data. Bit grinding The content of the powder in the lower part, that is, the powder taking rate. If the product is high-grade flour, the sieve is made of a dense screen, and the screening time should be extended appropriately during the inspection. When testing the powder extraction rate of each mill in the same process, the inspection screening time should be consistent. In the milling process based on the production of high-grade powders, the powder extraction rate of the anterior core grinding is generally 30%-40%, and the powder extraction rate of the posterior core grinding will be lower than this value.|
|add to favorites||Improper problem with cutting disk operation||l/mile||No||$|
|1 original method of operation In the process of loading and unloading, in order to save electricity, the fiber cutting disc Chinese supplier should be stopped. The temperature distribution of different parts of the cutting disc is analyzed as follows: 1) During the grinding process, the outer ring of the cutting disc directly contacts the continuous casting billet, the temperature rises fastest, and the internal temperature decreases in turn. 2) During the loading and unloading process, the grinding machine does not work, the cutting disc stops rotating and starts to cool, the outer ring temperature drops the fastest, and the temperature drops from the outer ring to the core decreases. The loading and unloading process takes an average of 5 minutes after the loading and unloading process is over. 2 reasons analysis The temperature distribution of the different diameter parts of the cutting disc is uneven, and the temperature of the same part varies greatly at different times, which will generate a large internal stress. When the internal stress is greater than the rubbing force between the abrasive discs of the cutting disc, the abrasive grains will be between the abrasive grains. Tear, the crack will continue to extend until the disc is cut. 2.2. External force impact The feature of the burst due to the impact of the external force is that the end face of the continuous casting blank has a significant impact. The collision of the cutting disc with the end face of the continuous casting billet is the cause of the burst. In order to prevent such accidents, the program specifically sets the protective interlocking “When the trolley is started, the cutting disc cannot be lowered”, but “the cutting disc can be lowered when the cutting disc is replaced”; in addition, the programmer often The program is adjusted to prevent accidents, because part of the interlock function is lost, so that "the cutting disc can be lowered during the running of the trolley", causing the cutting disc to collide with the end face of the continuous casting billet, generating a huge impact force, causing cutting Disk burst.|
|add to favorites||Evaluate the shape of the grinding wheel||No||
Because the surface of the grinding wheel directly affects the quality of the grinding surface, it determines the grinding performance and service life of the grinding wheel. Therefore, it is of great significance to evaluate the grounding of the wheel after trimming, and it can be used to guide the design of the wheel dresser and the dressing of the grinding wheel.
1. Ideal grinding wheel shape and its evaluation
The state of the thin abrasive cutting disc for metal can be used to predict the amount of grinding surface. In order to make the distribution of the cutting marks on the surface of the workpiece to be more uniform and reduce the roughness of the grinding surface, the grain spacing of the surface of the grinding wheel should be uniform; at the same time, in order to make the grinding particles in the grinding
The depth of the cutting marks on the surface of the workpiece is uniform, and the surface roughness of the surface is small. Therefore, the height distribution of the surface of the grinding wheel is uniform, that is, the contour is good; and in order to use the micro-knife in a semi-blunt state under appropriate grinding pressure The friction generated between the surfaces of the workpiece acts as a polishing device to obtain a grinding surface with high precision and small roughness, achieving high precision, small roughness, and grinding. Therefore, the particles on the surface of the grinding wheel should have the micro-knives described above. The ideal wheel has the three characteristics of uniformity, uniformity and micro-blade.
The ideal evaluation of the quality of the grinding wheel is as follows. The ideal wheel topography should have three characteristics. In order to make the abrasive grain distribution on the surface of the grinding wheel uniform, the surface of the thin flat cutting disc should obey the following two directions.Uniform distribution on the uniform distribution of abrasive grains in the width direction of the grinding wheel and uniform distribution of abrasive grains in the circumferential direction of the grinding wheel
|add to favorites||Basic characteristics of the grinding wheel||No||
The intrinsic quality of diamond grinding wheel is mainly affected by abrasive, particle size, concentration, binder, filler and hardness and strength. Electroplating Ni-based bonding agent, high strength, large abrasive holding power, good shape retention of thestandard cut off wheel for metaland long service life, but its self-sharpness is poor and the adaptability is poor. Resin bonding agent: low strength, small abrasive holding force, abrasive grain Good properties, sharp surface of grinding wheel, high grinding efficiency: but not wear-resistant, low life; metal bond, grinding performance between electroplating and resin bonding agent, good overall performance.
The coarse grain size of the diamond will reduce the cutting wheel load, improve the cutting efficiency, and extend the life of the grinding wheel, but the collapse is large; the fine particle size will reduce the cutting and fracture, and reduce the surface roughness: but the life is short. The grinding wheel has a high concentration: the grinding wheel has a large number of abrasive grains, a single abrasive grain has a small grinding force, wear resistance, and the grinding wheel has a long service life: but it should not be too high. Filler is also the main method to improve the performance of the 7" cut off disc for stainless steel Adding alloy powder can improve the rigidity and wear resistance of the grinding wheel, and adding ordinary abrasive grains can improve the sharpness of the grinding wheel. The hardness and strength of the grinding wheel are high: the abrasive grain is not easy to fall off, and the wear life is high: but the sharpness of the grinding wheel is poor: it is easy to affect the quality of the grinding workpiece. For specific use, adjust according to different grinding conditions: to adapt to its comprehensive grinding performance.
The geometric accuracy of the grinding wheel has little effect on ordinary grinding, because the working face of the grinding wheel often has to be repaired on the machine. When the electronic components are precision cut and ground, the thickness of the ultra-thin grinding wheel is no longer trimmed, so the geometric accuracy of the cutting and the accuracy of the shape and position must also be taken seriously. The difference between the thickness of the grinding wheel and the large impact of the end face affects the cutting precision: there is competition; the inner hole of the grinding wheel is too large, the inner and outer circle concentricity is not good, and the grinding vibration is easy to occur: the workpiece is collapsed; the flatness of the grinding wheel is poor, the symmetry is poor, The difference in the perpendicularity between the outer circle and the end surface is likely to cause the cutting and eccentricity of the cutting: a beveling phenomenon occurs. In order to further improve the grinding and cutting effect of the grinding wheel, the optimization of the grinding wheel structure can also have a certain effect. For example, if the side back angle is set on both sides of the grinding wheel: it is beneficial to improve the cutting precision; the outer circle of the grinding wheel is provided with an arc: it can improve the cutting and collapse; the water tank is set in the outer circle of the grinding wheel to improve the chip removal ability: reduce the grinding temperature: However, the impact of the wheel with the sink and the workpiece can not be underestimated.
|add to favorites||About cutting disc||l/mile||No||$|
|Cutting discs are the most important type of grinding tools in grinding. The high quality cutting disc supplier is a porous body which is prepared by adding a binder to an abrasive, compacting, drying and baking. Due to the different abrasives, binders and manufacturing processes, the characteristics of the cutting discs vary widely, which has an important influence on the processing quality, productivity, and economy of the grinding. The characteristics of the cutting disc are mainly determined by factors such as abrasive, particle size, binder, hardness, structure, shape, and size. According to the abrasive used, it can be divided into ordinary abrasive (corundum and silicon carbide) cutting discs and natural abrasive superabrasives and (diamond and cubic cutting discs, boron nitride, etc.) cutting discs; According to the shape, it can be divided into a flat cutting disc, a bevel cutting disc, a cylindrical cutting disc, a cup-shaped cutting disc, a disc-shaped cutting disc, etc.; according to the bonding agent, it can be divided into a ceramic cutting disc, a resin cutting disc, a rubber cutting disc, a metal cutting Disk, etc. The characteristic parameters of the cutting disc mainly include abrasive, viscosity, hardness, bonding agent, shape, size and the like. Cutting discs are an important part of the abrasives industry. The abrasives industry is becoming more and more important in mechanical production, and cutting discs play an indispensable role. With the development of science and technology, new materials continue to grow, and mechanical processing is developing in the direction of high quality, high precision, high efficiency, and automation. The application range of ceramic bond diamond cutting discs is wider and wider, and the dosage is increased. The ceramic bond diamond cutting disc has high strength, good heat resistance, sharp cutting, high grinding efficiency, no heat generation and clogging during grinding, small thermal expansion, and easy control of machining accuracy. Compared with the resin bond diamond cutting disc, it solves the problem of low life of the resin diamond cutting disc, low grinding efficiency, and the grinding tool itself is easily deformed during the grinding process.|
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