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微量元素是指钢中以杂质形式存在的金属或非金属元素。钢材生产标准中对这些元素的含量有严格的限制。本文讨论的是在标准范围内的微量元素对热处理工艺的影响。1微量元素对45钢淬透性的影响45钢零件在热处理中出现变形、开裂是常见的。在造成事故的诸因素中，有时微量元素起主
Trace elements refers to the metal in the form of impurities in the steel or non-metallic elements. Steel production standards have strict limits on the content of these elements. This article discusses the impact of trace elements within the standard range on the heat treatment process. Effect of trace elements on hardenability of 45 steels 45 Steel parts are deformed during heat treatment and cracking is common. In the factors that caused the accident, sometimes trace elements dominated