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Application And Dressing Of PCD Tools
Jan 12, 2018

Application and dressing of PCD tools

PCD performance depends on the diamond grains and cobalt content. The tool life is 10 to 500 times to the carbide (WC substrate). It is mainly used for turning a variety of non-ferrous metals, such as aluminum, copper, magnesium and its alloys, hard alloys and wear-resistant fiber reinforced plastic materials, metal matrix composites, wood and other non-metallic materials. The material and the hardness of the workpiece will affect the cutting speed, feed speed and depth of cut Machining conditions. The performance and application of PDC are close to PCD tools, which are mainly used in non-ferrous metals, cemented carbide, ceramics, nonmetal materials (plastics, hard rubber, carbon rods, wood, cement products, etc.), composites Cutting and other processing. It gradually replaces carbide cutting tools. The diamond particles have some residual binder metal and graphite, which binder metal in coalescence or vein distribution will be reduced the tools’ wear resistance and life.

Compared with common corundum and silicon carbide abrasive tools, vitrified bond diamond grinding wheel has the common features of diamond and ceramic bonding agent. It has strong grinding force, good shape retention, low temperature during grinding and small abrasive wear; and is suitable for various cooling liquid and grinding out high precision workpieces. Since the ceramic bond grinding wheels has more pores, it is conducive to remove the chip and cooling, and not easy to burn the workpiece. Therefore, the use of ceramic bond diamond grinding wheel in some foreign developed countries is widely used.

The grinding efficiency of ceramic bond diamond wheel grinding is higher than metal bond wheel. The wear rate is very small and the processing costs is lower, so the use of ceramic bond grinding wheel gradually increased. In the grinding of PCD tools, due to the resin binder is soft, easy to deform during grinding, it can not effectively grind PCD tool. Metal bonding agent has a strong binding capacity of abrasive, but its self-sharpening is not good, and grinding efficiency is low. Thus the metal bonded grinding wheel will damage the edge of the PCD tools. Combine the grinding efficiency, abrasive durability and the quality of the workpiece surface, ceramic bonded diamond grinding wheel is the most suitable tool for grinding PCD tool.

JR company specializes in diamond and CBN tools, including resin bond, vitrified bond, metal bond and electroplated grinding wheel.

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