Introduction to tool steel

Steel used to manufacture various cutting tools, cold and hot deformation molds, measuring tools and other tools, collectively referred to as tool steel. All kinds of tool steels have common requirements, such as high hardness, good wear resistance and certain toughness and strength, and have their own special requirements, such as red hardness, impact resistance, dimensional stability, thermal fatigue resistance and good comprehensive mechanical properties. In order to meet these different requirements, the production of a variety of different components of tool steel, and through the appropriate heat treatment process to achieve its performance requirements
High speed tool steel is an alloy tool steel containing C, Mn, Si, Cr, V, W, Mo, Co. And it can be used to do high-speed rotary cutting tools, wear resistance, high temperature resistance, which is Cr, V, W, Mo proportion is relatively large, taking W12Cr4V5Co5 as an example, Cr->3.75%-5%, V->4.5%-5.25%, W->11.75%-13%. The proportion of Cr and V shall not be less than 3%. The content of P and S shall not exceed 0.030%.
The processing method of alloy tool steel is mainly pressure processing steel and cutting tool steel. There are many types of alloy tool steel, cold work, hot work, non-magnetic, plastic die steel, etc., and the proportion of Cr and V can not be too low. Cold working tool steel selection
The choice of tool steel for cold working die is selected according to the main failure mechanism of the die in practical use. It is not enough to only have knowledge of steel properties, but also to consider the number of parts produced, the type of material being processed, the thickness and its hardness. A basic method of selecting tool steel is to first eliminate all other failure mechanisms except for wear, and then select the tool steel with the most suitable wear resistance to meet the requirements of product production.