Some devices are also equipped with spindle speed , wheel auto repair, tool nose radius microscope and automatic processing devices. Grinding wheel surface is essentially randomly distributed on a large number of abrasive grains in the process of cutting . Because diamond, cubic boron nitride and other superhard materials with high hardness and abrasive grinding
wheels wear resistance , and its grinding mechanism and general grinding of metallic materials have varied considerably . System superhard materials during grinding diamond wheel loss mechanism for rational selection and use of diamond grinding wheel has guiding significance .
Diamond wheel loss microanalysis :
The various conditions of use after grinding diamond wheel was observed under a microscope , the loss can be analyzed in detail , the results are as follows:
In the grinding force and grinding speed is low under the conditions of diamond grinding wheel , the surface of the angular distribution of a large , consistent reflective facets of diamond abrasive wear . This diamond blade saws is because the diamond grains and superhard materials produced by mechanical friction and mechanical wear. This wear is gradual, with its grinding abrasive wear amount proportional to the stroke length .
In the grinding zone temperature higher grinding conditions on the diamond grit diamond wheel and graphite oxidation and loss. According to the properties of diamond , oxidation, depending on the degree of graphitization of the diamond abrasive crystals integrity and the degree of graphitization is also related with the crystal orientation . Good diamond abrasive crystal perfection , oxidation , low degree of graphitization loss .
Diamond grinding wheel diamond grit on the concrete saw blades surface portion of the occurrence of local fracture and fragmentation , resulting in whole shedding. Cleavage occurs diamond abrasive damage . As the crystal is determined by the crystal structure of the cleavage of chemical bonds factor 7 type, intensity and distribution of the resulting fracture plane , it is often the bond strength along the azimuth plane the final generation . Randomness of the distribution of grain , determine the occurrence of cleavage destruction is inevitable.
Diamond tool is mainly used for a variety of non-ferrous metals such as aluminum turning, copper, magnesium and its alloys, tungsten carbide and wear strong fiber reinforced plastic materials, metal matrix composites, wood and other non-metallic materials. When cutting speed, feed rate and depth of cut depends on processing conditions and the hardness of the workpiece material.
Thanks for sharing informative information about Diamond grinding wheel.
回复删除Diamond Cutting Tools