H13热作模具钢的热处理

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李文学　王玉峰　刘宗昌
摘　要　测定了H13钢的临界点和退火用TTT曲线，研究了热处理工艺对H13组织和性能的影响，试验结果表明，H13钢在840～860 ℃退火，软化效果最好，在1 020～1 040 ℃加热淬火，580～600 ℃回火，可满足热作模具钢的硬度要求。
关键词　H13钢　热处理　硬度
Heat Treatment of Hotworking Die Steel H13
Li Wenxue, Wang Yufeng and Liu Zongchang
(Baotou Iron and Steel Institute, Baotou 014010)
Abstract　The effect of heat treatment process on structure and hardness of steel H13 has been studied by determined critical point and time temperature transformation (TTT) curves of steel H13 for annealing. The results show that the optimum annealing temperature region is 840～860　℃ and the 1 020～1 040 ℃ quenching with 580～600 ℃ tempering is available to get the requirement hardness for steel H13.
Material Index　Steel H13, Heat Treatment, Hardness
　　H13钢是美国热作模具钢，钢锭经锻造后，先进行软化退火，加工成各种热变形模具，再经淬火、回火处理，获得HRC47～51的硬度，可满足热作模具钢的性能要求。本文对H13钢的热处理工艺及组织进行了研究。