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前言 30CrMnSiNi2A钢是目前我国航空工业中广泛应用的一种高强度结构钢。由于该钢种及其有关技术资料原是从国外引进的,随着生产的发展、环境的变化以及大量采用国产材料后,使得它的有关技术文件已经不适应我国的具体情况,在生产和使用中出现过不少质量事故。近年来,各厂根据所发生的质量事故情况,对热处理工艺进行了不同程度的修改,致使该钢种的热处理工艺极不统一,同时对于质量事故的分析和某些理论问题的认识也存在分
Foreword 30CrMnSiNi2A steel is a high-strength structural steel widely used in aviation industry in China. As the steel and its related technical information was originally imported from abroad, with the development of production, environmental changes and the extensive use of domestic materials, making it the relevant technical documents have not adapted to the specific circumstances of our country, in the production and use There have been many quality accidents. In recent years, the plant according to the quality of the accident occurred, the heat treatment process were modified to varying degrees, resulting in the steel heat treatment process is very uniform, while the analysis of quality accidents and some theoretical issues there are points