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(1) the stability of resin quality, especially the content of phenol in resin. Excessive free phenol content will accelerate the resin cracking of resin grinding wheel after heating and hardening, and affect the strength of the fast cheap metal grinding disc.


(2) The mixing uniformity of resin powder and urotropine, as the hardening agent of resin, the addition of urotropine is insufficient, and the hardening of resin is incomplete, which affects the strength and hardness of grinding wheel; if the content is too high, the excessive Urotropine does not combine with resin, and decomposes and volatilizes in the hardening process, so that the porosity of high quality metal grinding disc increases and its porosity decreases. Strength and hardness.


(3) the binder grain is coarse or oversized.

It is generally believed that the size of the binder is fine, which is conducive to the uniform distribution of the binder. When the grain is rough, the forming material is not easy to mix evenly, which affects the hardness and strength of 180*6*22mm metal grinding disc. Even for the resin slice cutting grinding wheel and cymbal grinding wheel with coarse particle size, the selected binder (resin powder) should be finer than 320 #.


But if the particle size of phenolic resin powder is too fine, it brings difficulties to the mixture, and it is difficult to achieve uniformity of the mixture, thus affecting the grinding performance of resin grinding disc.


The price of a grinding wheel made with a good binder must not be too low. So its hard to find a high quality metal grinding disc with a China cheap grinding disc price.

Matters needing attention in the process of China long life grinding wheel installation


When installing, the safety and quality of the grinding wheel should be inspected first. The method is to tap the side of the grinding wheel with a nylon hammer (or a pen) and the sound is clear.


Location problem is the location of the grinding wheel machine installed in the process of installation, we must first consider the problem, only to select a reasonable and appropriate location, we can do other work. It is forbidden to install the grinding machine in a place facing the nearby equipment and operators or where people often pass. A special grinding machine room should be set up in a general large workshop. If the special grinding machine room can not be set up because of the limitation of the workshop terrain, the protective baffle should be installed on the front of the grinding machine not less than 1.8m high, and the baffle should be firm and effective.


The unbalance of Grinding wheel for stainless steel is mainly caused by the inaccurate manufacture and installation of grinding wheel, which makes the center of gravity of grinding wheel not coincide with the rotary shaft. The harmfulness caused by unbalance is mainly manifested in two aspects. On the one hand, when the grinding wheel rotates at high speed, it causes vibration, which is easy to produce polygonal vibration marks on the surface of the workpiece. On the other hand, unbalance accelerates the vibration of the spindle and wear of bearings, and even causes grinding wheel rupture and even accidents. Therefore, it is required that the static balance should be carried out after the chuck is installed in the sand office building with a straight length greater than or equal to 200 mm, and the static balance should be repeated after dressing or when the wheel is found to be unbalanced in work.


Matching problem mainly refers to the installation and matching of chuck and grinding wheel. According to the standard requirement, the diameter of grinding wheel chuck should not be less than 1/3 of the diameter of the installed sand office building, and the new grinding wheel should be replaced when the grinding wheel is worn to 10 mm larger than the diameter of chuck. In this way, there is a chuck and grinding wheel matching problem, otherwise there will be such a situation, "big horse cart" caused waste of equipment and materials, "small horse cart" does not meet safety requirements, easy to cause personal accidents. Therefore, the reasonable matching of chuck and grinding wheel, on the one hand, can save equipment and cut materials; on the other hand, it meets the requirements of safe operation. In addition, a cushion with a diameter greater than 2 mm and a thickness of 1 mm~2 mm should be installed between the grinding wheel and the chuck.


The protective shield is the most important protective device of the grinding wheel machine. Its function is: when the grinding wheel is damaged due to some reasons, it can effectively cover the grinding wheel debris and ensure the safety of personnel. The grinding wheel shield has two shapes, circular and square, the maximum opening angle is not allowed to exceed 90 degrees; the material of the shield is steel with tensile strength not less than 415N/mm2. When replacing the new grinding wheel, the protective cover should be firmly and reliably installed, and the protective cover should not be disassembled or discarded at will. The shield plate is one of the main protective accessories of the grinding wheel machine. The opening of the shield above the horizontal plane of the main shaft is greater than or equal to 30. Its main function is to cover the flying in the grinding process, so as not to hurt the operator. It is installed at the front end of the opening of the protective cover, the width should be larger than the width of the grinding wheel protective cover, and should be firmly fixed on the protective cover. In addition, the clearance between the circumferential surface of the grinding wheel and the gear plate should be less than 6mm.


Bracket problem bracket is one of the commonly used accessories of grinding wheel machine. Adjustable bracket must be installed for grinding wheel machine whose diameter is more than 150 mm. The distance between the fast working grinding wheel and the bracket shall be less than 1/2 of the minimum contour of the grinded workpiece, but the maximum shall not exceed 3 mm.


The grounding machine uses power lines, so the equipment housing must have a good grounding protection device. This is also one of the important factors that cause accidents easily.

High efficient metal abrasive disc in use process


Side grinding problems in the daily use of grinding wheels, we can often have existing operators regardless of the type of grinding wheels, regardless of the type of grinding wheels, arbitrary use of grinding wheels on the side, which is a serious violation of safe operating procedures. According to the regulations, the grinding wheel with circumferential surface as working face is not suitable for side grinding. The radial strength of this kind of grinding wheel is large, and the axial strength is very small. If the operator exerts too much force, the Cheap grinding disc will break, even hurt people. This behavior should be prohibited in the actual use process.


Frontal operation problems in daily use, many operators are accustomed to operating toward the China grinding abrasive disc, because this direction can use force, in fact, this behavior should be specifically prohibited in the operation of the grinding wheel. According to the operation rules, when grinding the workpiece with a grinding wheel machine, the operator should stand on the side of the grinding wheel and not operate on the front of the grinding wheel, so as to avoid grinding wheel flying out or grinding wheel breaking and flying out injuring people.


Force operation problems in the use of grinding machine, some operators, especially young operators, in order to grinding speed, too much force, this is a very unsafe operation behavior. The flatness of any grinding wheel has a certain strength, so it is likely to cause the grinding wheel to break, or even fly out of injuries, is also a prohibited behavior.


Joint operation problems in the actual daily operation, there are also such cases, some people in order to catch up with production tasks, rush to work time, two people share a China high efficient grinding disc at the same time, this is a serious violation of the operation, should be strictly prohibited. When a grinding wheel machine is not enough, it can be solved by adding a grinding wheel machine. It is absolutely not allowed to share a grinding wheel machine at the same time.


180*6*22mm metal grinding disc is very popular especially in African countries, such as Nigeria, Cameron, Kenya, Ghana, Uganda, South Africa and so on, the customers there prefer good quality instead of bad quality. In order to produce the best quality and most suitable fast cheap high quality 180*6*22mm metal grinding disc, we have done a lot exper iments here in China. You know that different markets have different requirement for different discs, in Nigeria, customers may want the 180*6*22mm metal grinding disc to work more faster, while in some other countries, the customers may want it work more durable, the good news is that we can make it both faster and more durable, that is why customers shall choose us with China cheap grinding disc price.


For the raw material

Our factory is located in the beautiful mountain area, in the beautiful mountain area, there is raw material aluminum for the high quality metal grinding disc, 70% of the raw material for the 180*6*22mm metal grinding disc is produced here in Henan province with China cheap grinding disc price, very near to our factory in Zhengzhou . To produce fast cheap metal grinding disc, and if you want it high quality metal grinding disc, you must use the best quality aluminum or white aluminum, we always buy the best quality aluminum as raw material, even it is expensive, we still buy it.


As for the producing 

The producing for Fast cheap high quality 180*6*22mm metal grinding disc include several steps, first, we select the best quality aluminum, white aluminum for different 180*6*22mm metal grinding disc, second, we choose the most suitable resin bond and resin powder. Then blend the aluminum and resin bond, the resin bond can make the raw material blending very well, at the same time, it can enhance the stability of the fast cheap metalgrinding disc.


 After the blending, we need to put the blended material under some cold temperature like 18 degree for some hours, till the raw material is fixed and very stubborn, and very stable, we will use the blended material and put it to feed the machine, with the skilled work of our workers, and good accurate of our machines, the high quality metal grinding disc can be formed to in the standard shape of what customers need, we can adjust the thickness according to customers’ need, for example, the same size 115*1.0*22, if you want it to be 115*1.2*22 or 115*1.6*22, there is no problem, we just adjust the thickness for you by using the same machine, it is very fast and finally the products will meet your demand. After the forming of the disc, we will use the standard furnace to burn the high quality metal grinding disc for 24 hours, when it is fast and durable enough, our workers will take it out.


The developing of our factory and the technology

Our factory was founded in 1992, there were many factories built to produce Fast cheap high quality 180*6*22mm metal grinding disc, during that time, in the first 20 years, the business was very good, most of the factories produced  180*6*22mm metal grinding disc  for the Chinese customers, with the economy developing, many factories started to produce fast cheap metal grinding disc for foreigners, the business ran very well, while little by little, many companies fight for the orders, they used cheap price to attract customers, and got the orders very easily, while finally, the price of the order is the sacrifice of the quality of the high quality metal grinding disc .With time goes on, a lot of factories were closed because of losing customers by using bad quality. 


As we know, Zhengzhou, our factory location, is the original place where our country started to produce abrasive materials, dating back to 1962, when the Chinese economy started to develop, the second abrasive factory was founded in Zhengzhou, and our government supported this factory a lot, our performer vice president once came to our factory to visit and guide the work, the factory was developing very well, and this factory had trained a lot of technicians, and the technicians in our factory were most from this factory, the technology just spread. It is the foundation for us to produce the fast working grinding wheel. 


We always won good feedback from customers for high quality grinding disc factory price for different types of discs, even it is bad feedback, through our hard working, we can turn it to good feedback, we can win good feedback from customers by supplying super quality cutting and grinding discs.

Analysis on the grinding characteristics of ultra-thin cutting wheels and points for attention in use


What are the grinding characteristics of ultra-thin cutting wheels? What are the points for attention in the use of ultra-thin cutting wheels?


The ultra thin cutting wheel is mainly used for precise grooving and cutting, and the deep and slow feed grinding method is adopted. It has the characteristics of large grinding depth, small feed speed, large contact area between fast grinding wheel for stainless steel and workpiece, narrow slit, high metal removal rate, high grinding accuracy, good surface quality and high material utilization.


The general laws are as follows:

1). The monolithic cutting blade grinding wheel is thin in thickness (mostly less than 0.5mm), small in diameter (20-100mm), fine in size, high in shape and position accuracy, light in weight, and generally used at high speed. The general speed is 5000-40000rpm.


2). Most of the matrix cutting grinding wheels are thick (0.5-2 mm), large diameter (100-200 mm), coarse grain size and low precision, which are generally used in the condition of low rotational speed and large cutting depth. The general speed is 3000-10000rpm.


3).fast 9'' grinding wheel uses fine grain size, and generally the thinner the thickness of the abrasive grain size will be correspondingly fine, good surface quality. However, the finer the abrasive particle size, the lower the cutting sharpness, the lower the feed speed, so as to adapt to the machinability of abrasive particle size.


4). 230*6*22mm grinding wheel for stainless steel cutting depth is generally determined by the user according to the cutting parts, its cutting mostly adopts slow-feed grinding process, the depth of one cut to. In this way, because the cutting wheel is thin and the cutting conditions are poor (mostly 3 contact workpieces), it is difficult to heat dissipation, so it is necessary to increase (flow, pressure) on the cutting zone cooling.


5). It is suggested to increase cutting speed or decrease feed rate when cutting grinding wheel is immovable or workpiece breaks when it is used on the machine at the user's place. When high quality 9'' grinding wheel is immovable or breaks after a certain period of use, it is suggested to cut the surface of grinding wheel with appropriate grain size of oil stone to adjust its sharpness.


6). The surface quality and cutting performance of workpiece are mainly related to the abrasive grain size of ultra-thin cutting grinding wheel. The finer the grain size, the better the surface finish. At the same time, it also has something to do with the factors such as workpiece material, hardness, cutting amount, machine condition, processing requirement and so on.


7) the ultra thin cutting wheel has been trimming and sharpening before the factory is ready, so the user can use it directly. If the user needs further shaping, it is recommended to use green silicon carbide or white corundum oil, the particle size of the grinding wheel is 1-2 larger than that of the cutting wheel; if the user needs to further cut or use a section after cutting, it is recommended to use green silicon carbide or white corundum oil, the particle size of the cutting wheel is 1-2 smaller than that of the same size.


8) Cutting parameters are also generally related to the material to be processed, hardness, accuracy, processing requirements and so on. It is recommended that the best initial use in the user's original conditions to use, do not easily change the cutting parameters.


9) User's operating conditions are also the main factors affecting cutting performance, especially axial series, radial runout of machine tool spindle, flange parallelism, dynamic balance accuracy and so on, which directly affect the cutting accuracy of cutting grinding wheel.


High-speed cutting of all kinds of tool steel, ceramics, cemented carbide, thickness from 0.1 mm, its precision and thickness tolerance is very high. This series of products have the characteristics of high cutting precision, quick work efficiency and low material consumption, especially suitable for cutting high hardness steel, analyzing material cutting, sample cutting or precious metal, lithofacies, various crystal and ceramic slices, glass and alloy, semiconductor, integrated circuit board PCB, etc., widely used in mold manufacturing industry and steel Wood factory.


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Bitcoin forecast to 2029

Time model tends to forecast lower bound to prices. Stock-to-Flow model is a better model, click chart above to see details. It incorporates the halvings and better represents the monetary policy of Bitcoin. Hype cycles are expected around each halving as investors anticipate the price appreciation. Bitcoin has a fixed supply (maximum 21 million Bitcoins), therefore it cannot be devalued by central bank money printing (so called Quantitative Easing, QE). Bitcoin is also decentralised, meaning no single authority can control it. It has existed on the Internet for 10 years from 2009. It will be the money of the machines and Internet. Also described as digital gold due to its scarcity and high value.

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