For example: alloys with high strength and high impact toughness (such as mining alloys and milling tools) require high requirements, while continuous cutting tool alloys with low impact load but high machining accuracy require low raw material purity.
2. Control the particle size and distribution of raw materials
Avoid excessively large particles in carbide or cobalt powder raw materials, and prevent the alloy from forming coarse carbide grains and cobalt pools during sintering. At the same time, the particle size and composition of the raw materials are controlled to meet the needs of different products. For example, cutting tools should use tungsten carbide powder with a Fisher particle size of less than 2 microns, wear-resistant tools should use tungsten carbide powder with 2-3 microns, and mining tools should use tungsten carbide powder with a size greater than 3 microns.
Improve the structure of the alloy
Improve or select new hard phase and binder phase
Surface hardening treatment
Solve the contradiction between the wear resistance and toughness, hardness and strength of cemented carbide,
Coating: Physically or chemically deposit a layer of TiC or TiN on the surface of the tough hard alloy to increase the wear resistance of the alloy,
The fastest developing of boronizing, nitriding, and EDM is the coated cemented carbide.
