In the production of diamond segments, diamond grinding blocks, small diamond blades and diamond grinding wheels, one method is to first cold press them into their required profiles and then put them into a kiln for sintering. Another method is to directly sinter them under a certain pressure.
In the diamond tools’ manufacture, brazing is a welding method using silver solder slices to stick segments to the diamond tool’s body. It is a physical combination. It not only consumes expensive silver solder slices, but has other disadvantages, such as low welding speed and big welding deformation. More importantly, its welding toughness is not very high. When the temperature of the diamond tool’s working part rises to a high degree in the job, the welding positions will get looser, and the segments may even fall off and cause a safety problem.
From the cooling point of view, diamond tools can be used in 3 cutting manners: dry cutting, wet cutting and immersion cutting. The 3 manners have their own characteristics and application ranges.
There are many standards for High Speed Steel (HSS) grades. We make the comparison table based on Chinese grades to try to tell the counterparts of a HSS grade you know in other standards.
Because of force effects and temperature effects, there will be the wear of the diamond blades after a period of using. There are mainly following 5 forms of the wear:
In the process of cutting, diamond blades will withstand many alternating loads, such as the pressure of cutting, centrifugal force, and cutting heat. These force effects and temperature effects will cause the wear of the blades.
Selecting suitable type of diamond blades for the materials to be processed is also very important for the blades’ service life. The user can consider this issue from below 3 aspects of the diamond blades:
Prolonging the service life of diamond blades can not only reduce the user’s costs, but also let the resources be used fully. There are 3 cutting parameters which impact the blades’ life to a fairly big extent:
High Speed Steel (HSS) is a kind of steel containing some other elements: carbon, tungsten, molybdenum, chromium, vanadium, and/or cobalt. After heat treatments, it will have high hardness even at high temperatures. When the cutting temperature exceeds 600°C, the hardness of HSS will not decrease apparently. The cutting speed of cutting tools made of HSS can exceed 60 meters per minute, thus High Speed Steel gets its name.
For improving the quality of diamond tools, we now know 7 effective ways: