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前言真空热处理可以提高工模具使用寿命的原因,一般都归因于模具表面质量的改善[1.2],但这种看法往往是对高合金钢而言。对高碳低合金钢的性能及使用寿命的影响如何,是人们非常关心的问题。作者研究对比了CrWMn钢在真空和盐浴热处理后的组织及性能。一、试验条件
Preface The reason why vacuum heat treatment can improve the service life of tooling is generally due to the improvement of the quality of the mold surface [1.2], but this view is often for high alloy steels. The impact on the performance and service life of high-carbon low-alloy steel is a matter of great concern to people. The authors compared the microstructure and properties of CrWMn steels after vacuum and salt bath heat treatment. First, the test conditions