There are two types of CVD diamond knives. One is the CVD diamond (i film (thick film) inlay tool. The diamond film with a thickness of about mm is cut into many small triangular pieces by laser. Then the triangular small pieces of diamond are welded to the cemented carbide knife. From the top, then forming and cutting, the hardness and foot resistance of the knife are 2-3 times that of the PCD knife. The CVD diamond coated knife is directly on the hard alloy knife only from the body Deposit a layer of diamond glue with a thickness of about 10 pm. This method is simple to produce and low in cost. It has market competitiveness, but there is a blanket of binding force.
Many companies outside ICI have conducted research and development work on diamond-coated tools. For example, Sandvik and Balzers have established a diamond coating production line to coat carbide tools with 6-10 um diamond film for users to test.
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