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对鋼材及其热加工缺陷的分析,以采用金相法为最可靠和最方便;因为一定的热处理,便有一定的金相組織与其相对应,所以从事后的組織,可以推断先前的处理过程。再配合一些其他的試驗方法,如化学分析等,便能迅速的查明廢品的起因,提出防止或补救的方法。鋼材及其热加工缺陷,包括:1.淬火缺陷;2.退火缺陷;3.鍛造缺陷;4.材料缺陷。而淬火缺陷又包括开裂、变形、过热、硬度不足及軟点等数种。本文拟就淬火开裂問題
Analysis of steel and its thermal processing defects in order to adopt the metallographic method for the most reliable and most convenient; because of a certain degree of heat treatment, there is a certain degree of microstructure corresponding to it, so engaged in the organization, you can infer the previous treatment process. Coupled with some other test methods, such as chemical analysis, etc., can quickly identify the causes of waste, put forward to prevent or remedy. Steel and its thermal processing defects, including: 1. Quenching defects; 2. Annealing defects; 3. Forging defects; 4. Material defects. The quenching defects, including cracking, deformation, overheating, lack of hardness and a few soft spots. This article is about quenching and cracking problems