How to Harden 718 Die Steel
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In order to increase the die life of the 718 die steel to 800,000 die or more, the prehardened steel can be hardened by quenching and low temperature tempering. When quenching, preheat at 500-600°C for 2-4 hours, then keep at 850-880°C for a certain period of time (at least 2 hours), put it in oil and cool to 50-100°C. Air cooling, hardness after quenching up to 50 - 52HRC, in order to prevent cracking should be immediately carried out at 200 °C low temperature tempering, tempering, the hardness can be maintained above 48HRC.
With the development of the mold, more and better updated mold steel numbers appear, I believe that in the next few years we will be the international leader.
This article is edited by Zhongshan Huashi Fushun Special Steel Technology Department. Please call for more details.
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