1. Cold-working die steel: mainly used for manufacturing dies that are pressed under cold conditions (room temperature). Such as cold stamping die, cold drawing die, cold pier die, cold extrusion die, stamping die, rolling die, etc.

2. Hot-working die steel: it is mainly used to manufacture dies in which metals are thermoformed at high temperature. Such as hot forging die, hot extrusion die, die casting die and hot shearing die.

Third, plastic mold steel: also known as plastic mold steel, mainly used for plastic molding molds. Plastic molds rank first in the mold manufacturing industry. There are many kinds of plastic die steel, mainly including: pre-hardening plastic die steel, age-hardening plastic die steel, corrosion-resistant plastic die steel, free-cutting plastic die steel, maraging plastic die steel and mirror-polished plastic die steel.

quality improvement

The modification of trace elements such as 1.Ca and rare earth changes the structural morphology and physical properties of inclusions in steel, making inclusions spheroidized and refined, thus improving the mechanical properties of steel.

2. The high temperature diffusion heat treatment of steel ingot can improve the composition inhomogeneity of steel ingot, thus improving the transverse properties of steel.

3. In hot working, repeated upsetting and multidirectional rolling of steel ingot can reduce the degree of carbide segregation in steel and improve the anisotropy of steel.