Polycrystalline Diamond |
PCD 聚晶鑽石 POLYCRYSTALLINE DIAMOND
PCD single tool is the diamond layer and the tungsten carbide base with a tool material. However, the combination of the two materials is through high temperature
Under high pressure through a complex process and become, usually PCD of the rough embryo is like a mini CD tablets, need to be up and down grinding, polishing
And wire cutting, laser cutting can be applied to every kind of tools.
PCD processing object
Non ferrous metal | Non metallic |
Aluminum alloy Silicon aluminum alloy Brass, bronze alloy Copper alloy Lead alloy, magnesium alloy Pre sintered tungsten carbide Sintered tungsten carbide Babbit alloy Silver, zinc, tin, platinum | Epoxy resin Glass fiber carbon graphite Plastic Rubber asbestos wood |
PCD polycrystalline diamond and no crystallization direction, while the general natural diamonds are, so be careful to find the crystal line
The direction of the party can play its effect, however, the crystallization of PCD does not have a special direction, there will be no hard and soft side of the face.
Type | Relative wear resistance | Hardness (kg / mm2) |
PCD Single crystal natural diamond Tungsten carbide | 250 96~245 25~30 | 6500~8000 8000~12000 1800~2200 |
PS: turning hard rubber material, with a certain value of tool wear to the abdomen, the time taken to make a conclusion.
PCD polycrystalline diamond, different particle crystal structure, main components 1µ, 2µ, 5µ, 10µ and 25µ.
The diamond layer particle size is the key to the surface roughness and tool life of the machined surface.
The application of PCD artificial diamond
Artificial diamond processing objects, is non-ferrous metals, cobalt, nickel based metal based, (as shown in Table 1), so the car, motorcycle, bicycle Widely used.
In general, the use of ceramic tools, tungsten carbide tools are likely to use the PCD tool, because PCD has better the wear resistance and hardness of the characteristics, and so can play the advantages of PCD, such as unit time capacity, downtime time, better surface roughness, workpiece size consistency.
PCD diamond tool can be wet or dry machining, but it's beter to be wet ! cutting fluid should be water-soluble cutting oil , emulsifier.
Good cutting fluid can effectively reduce the problem of cutting heat and cutting edge.