Cold work tool steel
Cold work tool steel focuses on hardness and wears resistance. The carbon content is high, and the alloying elements are mainly to increase the hardenability and improve the wear resistance. Cold work tool steel includes dies for punching (blanking punching dies, trimming dies, punches , scissors), cold heading dies and cold extrusion dies, bending dies and wire drawing dies.
Features of cold work tool steel
Vacuum degassed refined steel with pure inner quality; good machinability (20% higher machinability than SKD1); good hardenability, hardened by air cooling (hardening by air cooling); excellent wear resistance (can be used as stainless steel) and punching dies for high hardness materials); good toughness. The above are the features of cold work tool steel.
Use of cold work tool steel
Blanking Die HRC58~62 Advanced Gauge HRC60~65; Forming Roll HRC58~63 Thread Roller HRC60~63; Cross Recessed Screw Forming Die HRC57~62 Original Male Die HRC58~65 for Cold Extrusion Die Press Mold HRC58~63 cold heading mold HRC58~ 62; scissors HRC50~65 thermosetting resin molding mold HRC56~61. The above is the use of cold work tool steel.
Working conditions and performance requirements of cold work tool steel
Cold work tool steel at work. Due to the relatively large deformation resistance of the processed material, the working part of the mold is subjected to great pressure, bending force, impact force, and friction force. Therefore, the normal reason for the scrapping of cold work dies is generally wear. There are also premature failures due to fracture, collapse force, and excessive deformation. cold work tool steel compared with cutting tool steel. There are many things in common. The mold is required to have high hardness and wear resistance, high bending strength, and sufficient toughness to ensure the smooth progress of the stamping process. The difference lies in the complex shape of the mold and the processing process. And the friction area is large. The possibility of wear is high. So grinding is difficult. Therefore, the cold work tool steel is required to have higher wear resistance when the mold is working, and the stamping pressure is large. And because the complex shape is pro ne to stress concentration, cold work tool steel is required to have high toughness; the mold size is large and the shape is complex. Therefore, cold work tool steel is required to have high hardenability, less deformation, and a cracking tendency. In short , the requirements of cold work tool steel in terms of hardenability, wear resistance and toughness are higher than those of cutting tool steel. However, in terms of red hardness, there are relatively low or no requirements (because it is cold forming), so some steel grades suitable for cold work molds have been formed accordingly. Steel for mold and steel for high toughness cold work mold, etc. The above is the working conditions and performance requirements of cold work tool steel.
Post time: Sep-05-2022