检验金属及其合金的显微组织在生产实践中并不是在所有的情况下均允许作破坏取样检查的,例如在进行化工设备检修以及一些产品的测绘仿制等情况时,即要求在保留实物的前提下进行金相试验。为此,进行不破坏取样金相试验,在生产实践中是必不可少 Inspection of metals and their alloys microstructure in production practice is not allowed in all cases to make sabotage inspection, for example, in the chemical equipment maintenance and some products, such as mapping imitation, which requires the retention of physical Under the premise of metallographic test. For this reason, do not destroy the sample metallographic test, in production practice is essential