Diamond coating and cutting element
A cutting tool and diamond technology, which is applied in the field of diamond-coated cutting tools, can solve the problems of insufficient adhesion of diamond film, lack of adhesive diamond-coated tools, poor thermal expansion coefficient, etc.
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[0040]First, prepare the raw material powders shown in Table 1, which all have a predetermined average particle diameter in the range of 1 to 3 μm, and prepare mixed powders with the compounding composition shown in Table 1, and wet-mix this with a ball mill for 72 hours. After drying, press molding with a pressure of 100 MPa to form round rod compacts with diameters of 10 mm and 8 mm, and sinter these round rod compacts to produce a sintered body. In addition, the outer diameter of the groove forming part is processed to 8 mm, 6mm size, at this time, with respect to the outer peripheral edge and the edge of the blade, the air blasting treatment using SiC abrasive grains with a grain size of #600 and the finish grinding process of 30 μm or more using a diamond whetstone with a grain size of #1200, Thus, tool bases 1 to 5 with an outer diameter of 8 mm and tool bases 6 to 10 with an outer diameter of 6 mm were manufactured.
[0041] Then, with a solution of sulfuric acid, hydro...
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