Tungsten Carbide Knives Surface Machining Technologies

Adoption of new technologies for surface machining of tungsten carbide knives can improve the durability and service life of the tool, the development of the machinery industry has an important significance.

1. Coating Technology
Coated cemented carbide is coated with one or more layers of high hardness on a cemented carbide substrate, good wear resistance of metal or non-metal compound films combine high hardness and high strength of the matrix, and the coating of high toughness, high wear resistance advantages. Only reduces tool wear and ensures the matrix toughness, extend the life of the tool, the tool is another revolutionary development. Coated　tungsten carbide knives has higher hardness and wear resistance than the matrix, and it high heat resistance is to 800 ~ 1 000 ℃. Such as hardness at normal temperature for HV 2000, at 1 000 ℃ while still maintaining HV1000, without coated carbide fell to HV 500. Coated tungsten carbide knives than uncoated carbide high durability (generally 1 to 3 times increase, high up 5 to 10 times), high cutting speed, feed rate and cutting depth larger.

2. The ion implantation
Refers to the ion implantation in the ion implantation machine will accelerate to a high speed of high-energy ion beam, injected into the surface of a solid material, to obtain high hardness of hardened layer. After ion implantation, the tungsten carbide knives life and wear resistance are improved, and greatly improved durability (50% to 4 times). Ion implantation with respect to the coating technology has unique advantages, it allows the chemical composition and microstructure of the tungsten carbide knives material of the surface layer region is changed, a variety of strengthening effect ion bombardment of the material to produce the internal lattice defects, thereby increasing the surface mechanical properties. While overcoming the combined problems of coating and substrate.

3. Deep cold
Cryogenic processing refers to the material placed at -130 ℃ or less controlled environment insulate a process to increase or improve their performance. Cryogenic treatment not only can significantly improve the mechanical properties and stability of cemented carbide tool materials, and simple operation, low cost, non-polluting, has considerable economic and market outlook.