An analysis on chemical composition, microstructure and manufacturing processes of the fracture piston and bearing cover of oil pumps was carried out in this paper.
对断裂的油泵柱塞、轴承外套从成分、组织、工艺等方面进行了检验分析。
The goal of the analysis and testing is to acquire the information on chemical composition and construction of matter.
分析测试的目的就是获取有关物质化学组成和结构的信息。
The reason of arc crack on retarder gear surface was analyzed by means of chemical composition analysis, hardness testing, macrostructure and microstructure examination.
通过化学成分分析、硬度试验、宏观和微观检验等方法，对减速机齿轮齿面弧形裂纹的产生原因进行了分析。
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