2013年7月30日星期二

Application of diamond tools


Natural diamond tools currently used mainly for copper and copper alloys and gold, silver, rhodium and other precious metals, and special parts of the ultra-precision

mirror processing, such as a disk recorder, an optical mirror, a polygon mirror and the second curved mirror and so on. But its crystalline anisotropy, the tool

Expensive. PCD performance depends on the content of diamond grains and cobalt, cemented carbide tool life (WC substrate) of the tool 10 to 500 times. Turning is

mainly used for various non-ferrous such as aluminum, copper, magnesium and their alloys, tungsten carbide fibers and strong wear resistance

Plasticized 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. synthetic diamond polycrystalline diamond compact (PDC) properties and applications close PCD tools, mainly

Used in non-ferrous metals, tungsten carbide, ceramics, non-metallic materials (plastic, hard rubber, carbon rod, wood, cement products, etc.), composite materials

cutting, gradual replacement carbide cutting tools . Because the diamond particles bonded to ask some residual metals and graphite,

Bonding metal to which the state or in the form coalesced vein-like distribution will reduce tool wear and life. In addition there is a metal residue solvent, solvent

metal in direct contact with the diamond surface. Lower (PDC) antioxidant capacity and tool heat resistance, it is not enough cutting tool

Stability. Thick Diamond Tool preparation process is complex, because of the low melting point metals and their alloys and diamond has a high interfacial energy

between. Diamond is difficult to be generally low melting point solder alloy infiltration. Weldability poor, difficult to produce complex geometry tool, so TDF

Welding tool can not be used in high-speed milling. Diamond-coated tools can be applied to high-speed machining, because in addition to diamond coated tools have

excellent mechanical properties, diamond coating process can be prepared any complex shape cutters for high speed machining, such as aluminum

Difficult to machine titanium aerospace materials and non-metallic materials such as graphite electrodes.

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