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.
In my previous article about how to choose diamonds’ grit, I said some main points you should consider. There are still many other points which are also important.
When choosing the diamonds’ grit of a diamond tool, we should consider the workpieces’ roughness requirement, the tool’s cutting/grinding efficiency and the best grit range of the tool’s bond.
The bond of a diamond tool is mainly determined by the tool’s use. There are mainly three types of bond: resin, ceramic and metal.
Diamond concentration of a diamond tool means the weight of the diamonds in each cubic centimeter of the diamond tool’s working layer. The international standard has prescribed that if each cubic centimeter contains 0.88g super-abrasives, its concentration is 100%. The each increase or decrease of 0.22g will cause the concentration to change by 25% correspondently.
Some people may be curious why the prices of our diamond tool products (and our other products) can be that low. Is the products’ quality also at a very low level? No, we have different quality grades of products. Each quality grade is for a certain kind of jobs and can satisfy their requirements. Selecting products in suitable quality grade can reduce our customers’ costs. With the same quality, our products’ prices are very low comparing the ones in many other countries. The reason is mainly related to the production costs, our capacity and our price policy.
For improving the quality of diamond tools, we now know 7 effective ways: