2013年9月23日星期一

thick diamond tool sharpening

Thick diamond tool machining methods: mechanical grinding, hot metal plate polishing, ion beam, laser beam and the plasma etching.sintered diamond toolThe roll grinding with diamond thick destruction method 12 inch saw blade  for processing into an average particle size of 32 ~ 37μm diamond grains or the direct use of the legal system HPHT diamond grains, the grain powder stacked on WC-16wt% Co alloy, and then use Ta foil to isolate, in 5.5GPa, 1500 ℃ under the conditions of sintering for 60 minutes, made of diamond sintered body, using this sintered into tools with high wear resistance.monocrystalline diamond toolSingle-crystal diamond tool is usually fixed on  dry cut blades the diamond crystal knife head, knife head with screws or plates fixed on lathe arbor. Diamond in the knife head fixation methods are: mechanical reinforcement method (the diamond surface polished base and pressurized with pressure plate fixed to the knife head); powder metallurgy (the diamond on the alloy powder by adding pressure in the vacuum sintering, the diamond knife fixed at the head); bonding and soldering method (using an inorganic adhesive or  cbn wheels other adhesive fixing diamond). Because the diamond and the substrate thermal expansion coefficient differences between the diamond easily loose.

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