This type of alloy is called YG type alloy. The normal structure of WC-Co alloy white is a two-phase alloy composed of polygonal WC phase and bonding phase Co. Sometimes less than 2% of other (tantalum, niobium, chromium, vanadium) carbides are added as additives to the cutting blade or drawing die to increase the service life of the tool. However, this does not change the basic performance of the alloy, and it still belongs to the WC-Co type of cemented carbide. Compared with other cemented carbides with the same cobalt content, this type of alloy has the highest flexural strength, compressive strength, impact toughness and elastic modulus, as well as a smaller linear expansion coefficient.
According to tungsten carbide grains, this type of cemented carbide is usually divided into three categories: coarse grain, medium grain and fine grain. With the development of processed materials and cemented carbide production processes, the WC grains of WC-Co alloys have developed greatly towards the ultra-coarse and ultra-fine ends.
Post time: Jan-13-2024
