What kinds of blades materials are commonly used in double shaft shredders?

The commonly used materials of shredder blades are currently positioned in the market as follows: SKD-11, Cr12MoV, 9CrSi, 55sicr and so on. For different hardness requirements, the use of shredder tools are also different, which has become one of the important objects that tool manufacturers compete to study first. Common materials in plastic industry: 9CrSi, w5si6, SKD-11. Commonly used materials in the wood industry: 9CrSi, w5si6, SKD-11, Cr12. Materials commonly used in metal tearing industry: cr12mov1, SKH, H13, 6CrW2Si. The key to the service life of the blade of the double shaft shredder is the reasonable use of the blade, which requires the production experience of the blade manufacturer of the shredder. There is also the sense of responsibility and technology of on-site processing personnel. For example, although some tools are a little worn, the tolerance of the processing place is relatively large, so there is no need to choose a light knife or a new knife to process. In fact, the control of tool cost is not only to improve the service life of tools. There are also the selection of knife brands, as well as the selection of blade materials, and so on. Carburizing can strengthen the surface hardness of the hot shredder blade and improve its service life. After carburizing, quenching at 1140 ~ 1150 ℃ and tempering at 550 ℃ for two times, the surface hardness of the steel can reach hrc56 ~ 61, which is 1.8 ~ 3.0 times longer than the service life of the ordinary quenching crusher blade. Vacuum carburizing and ion carburizing have been developed in recent 20 years. This technology has the characteristics of fast carburizing speed, uniform carburizing layer, gentle carbon concentration gradient and small blade deformation. It plays an increasingly important role in the surface treatment of mechanical blades in the future.