How to use carbide

  Hard alloys have higher hardness and wear resistance than any other type of die steel, but have poor bending strength and toughness. The cemented carbide used as a mold is a tungsten-cobalt type, and a mold having a small impact resistance and a high wear resistance is required, and a hard alloy containing a relatively low amount of cobalt may be used. For high impact molds, carbides with higher cobalt content can be used.

Steel cemented carbide is made by adding a small amount of alloying element powder (such as chromium, molybdenum, tungsten, vanadium, etc.) as binder to iron powder, and using titanium carbide or tungsten carbide as hard phase, and sintered by powder metallurgy. The steel cemented carbide substrate is steel, which overcomes the disadvantages of poor toughness and processing difficulties of the cemented carbide, and can be cut, welded, forged, and heat-treated. Steel-bonded carbides contain a large amount of carbides. Although the hardness and wear resistance are lower than those of cemented carbides, they are still higher than those of other steels and can reach hardnesses of 68 to 73 hrc after quenching and tempering.

  The choice of carbide type and grade should consider the workpiece material and the rough and fine processing conditions. The following are the points that should be noticed for the introduction of WanCheng Hardware Power Grid Xiaobian:

  (1) When processing brittle materials such as cast iron, YG cemented carbide should be selected. When cutting brittle materials, chips become chipping chips, cutting force and cutting heat are concentrated near the cutting edge, and there is a certain impact, so the tool material is required to have good strength, toughness and thermal conductivity; In addition, YG cemented carbide grinding The cutting process is good, the cutting edge can be sharpened, so it is also suitable for processing non-ferrous metals.