Analysis on strength performance, thermal fatigue resistance and bite resistance of mold steel
1. Strength performance
(1) Hardness
Hardness is the main technical index of mold steel. In order to keep its shape and size unchanged under the action of high stress, the die must have high enough hardness. The hardness of cold working mold steel is generally maintained at about HRC60 at room temperature. According to its working conditions, hot working mold steel is generally required to be maintained in the range of hrc40 ~ 55.
For the same steel, within a certain range […]