Die steel is used to make cold punching die, hot forging die, die-casting die and other dies. Mold is the main processing tool for manufacturing parts in mechanical manufacturing, radio instruments, motors, electrical appliances and other industrial sectors. The quality of the die directly affects the quality of the pressure processing technology, the precision output of the product and the production cost. In addition to the reasonable structure design and processing precision, the quality and service life of the die are mainly affected by the die materials and heat treatment.
Die steel can be roughly divided into three categories: cold rolling die steel, hot rolling die steel and plastic die steel, which are used for forging, stamping, cutting, die casting, etc. Due to the different uses and complex working conditions of various moulds, the steel used for moulds should have high hardness, strength, wear resistance, sufficient toughness, and high hardenability, hardenability and other technological properties according to the working conditions of the moulds produced. Due to the different applications and complex working conditions, the performance requirements for die steel are also different.
