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本文根据新型铸造热锻模具钢(CHD钢)回火特点及其使用工况,提出了利用CHD钢的析出硬化而采用中温(450℃)回火工艺。
According to the tempering characteristics and working conditions of the new typed forged hot-die steel (CHD steel), this paper presents the use of the tempering process at mid-temperature (450 ℃) by the precipitation hardening of the CHD steel.