Brief Introduction of Cemented Carbide Coating

Cemented carbide  is made by the chemical vapor deposition (CVD) method,which coats TiC or TiN, HfN, Al2O3, and other wear-resistant on the surface of the carbide alloy inserts,so that the carbide alloy coating is formed. This is an important progress of modern cemented carbide  researches. The Sidek Krupp and the Swedish Sandvik company had developed TiC coated carbide inserts and put it into the market for the first time in 1969. After 1970, the United States, Japan and other countries were beginning to produce this  kind of blade. For more than thirty years, the coating technology has made great progress. Coated carbide blade has been developed from the first generation, the second generation to the third generation, fourth generation products.

                  
The advantages of cemented carbide coating:
1) coated cemented carbide  can  use the high cutting speed, thereby improving the processing efficiency;

2) since the smaller coefficient of friction between the coating material and the  processing material ,compared with uncoated blades, the cutting force of the coating blade has a certain decrease;

3) when the processing of the coating blade, the quality of processed surface  is excellent;

4) due to the good overall performance, coated blades have good versatilities. One coating grades of the blade can be widely used.

 

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