New breakthrough in tungsten carbide tool technology

"The current trend in machine tool development is high speed, high precision and high quality." The high-speed operation requires higher surface treatment requirements for molds, cutting tools and machine parts. Extending the useful life, reducing production costs, and creating higher profits are the common goals pursued by the industry.

In order to cope with high-speed machining and save a lot of processing time and costs, tool improvement has become an important factor. Tungsten carbide tools have a growing share in the tool market because of their higher wear resistance and hardness.

In order to obtain the best benefits in processing, proper surface treatment must be selected. Medium and heavy load molds must be CVD high-temperature titanium plating, supplemented by precision vacuum heat treatment to achieve acceptable deformation. This part is commonly used in cold forging die, hydraulic drawing die, tungsten carbide drawing line, suction pipe. In the application of tools, molds, and mechanical parts with medium or low load or precise requirements, PVD titanium plating at low temperature (150°C to 500°C) is appropriate.

Aluminium titanium nitride with high aluminum content can easily generate aluminum oxide on the surface of the hard film. This layer of oxide film can make titanium aluminum nitride ceramic hard film oxidation temperature reached 923 degrees Celsius, can protect tungsten carbide cutting tool high-speed cutting edge oxidation resistance and maintain high temperature hardness. However, although titanium nitride and titanium carbonitride also form titania oxide films at high temperatures, they are not easily adhered to the hard films and flaking off with chips, which results in a lack of protection of the hard films, rapid oxidation, and deterioration. Therefore, no matter whether the surface treatment of high-temperature or low-temperature coating has to be properly selected, a proper substrate and stable heat treatment must be used, and the pre-treatment of fine-grinding and polishing of the surface must be followed in order to improve.

Ultra-high temperature Resin Bond diamond Grinding Wheel processing efficiency is lower than METROX grinding wheel, due to the high bonding strength of the grinding wheel, the production cycle is short, the processing cost is low, especially when grinding tool edge is not easy to cause chipping, and according to the use requirements, Grinding into a variety of shape and shape of the molding wheel, so it is still widely used in production for a long time. How to further improve the grinding performance of such grinding wheels has also become an important task at present.