What is the difference between hard steel plate and soft steel plate?
The so-called hard steel plate refers to the steel plate after processing has not been annealed, while the soft steel plate is annealed. Some die steels are subjected to pre hardening, and heat treatment is no longer necessary in the manufacture of injection moulds.
Pre hardened steel: 1. pre hardened steel prehardened is to supply, without heat treatment, but sometimes need to be modified by forging, die forging must be carried out after heat treatment.The pre heat treatment, 2. commonly used pre hardened steel ball annealing is designed to eliminate the forging stress, spheroidal pearlite, uniform hardness, improve the plasticity and improve the performance of extrusion die cutting performance or cold.3. pre hardened steel pre hardening process is simple, most of the quenching and tempering after quenching and tempering, tempering sorbite. High temperature tempering temperature range is wide, can meet the mold hardness requirements of various work. Because of this kind of steel hardenability is good, can be used when quenching oil cooling and air cooling or nitrate quenching.
Molding (Injection) refers to the process of heating and melting material from the high pressure into the mold cavity, after cooling and curing, to obtain forming products. This method is suitable for mass production of complicated parts, and it is one of the important processing methods. The injection molding process can be broadly divided into the following 6 stages: mold injection - pressure holding - cooling - mold opening - product removal, and the process can be repeated to produce products continuously.
