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.


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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)  
knoop scale

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.