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- Metallographic examination and chemical composition analysis were done for analyzing the reason of spalling. 采用金相检验和化学分析等测试手段对轧辊剥落进行了分析。
- Surface crack on teethclamp was studied by means of macroscopic and metallographic examination. 采用外观和金相检验等方法对牙钳表面裂纹进行了分析。
- The fractured tubing was analyzed by fractographic inspection,metallographic examination,and mechanic property testing. 对油管进行了断口分析、金相检验、材料力学性能试验。
- The cracks of spanners made of hot-rolled round steel 45 were analysed by metallographic examination. 笔者对45号钢扳手进行了金相检验及分析。
- To study cup-cone shaped fracture during drawing of high carbon wire rod by SEM and metallographic examination. 采用扫描电镜、金相分析等手段,对高碳钢盘条在冷拔过程中出现杯锥状断口进行研究。
- By means of chemical composition analysis, metallographic examination and SEM, the trepanned samples were analyzed in back-up roll fractured. 采用化学分析、金相检验和扫描电镜等手段对断裂支承辊进行了套料取样分析。
- Through metallographic examination and SEM analysis of upset cracks,the cause of the formation of surface pores of steel # 45casting blank is studied. 从对顶锻裂纹缺陷进行金相分析、扫描电镜分析出发,研究45%23钢铸坯表面气孔形成的原因;
- This paper anaIysed the reasons at edge-turnup cracking of industrial boiler steel pipe by means of chemical analysis and metallographic examination. 采用化学分析和金相检验等方法对工业锅炉烟管扳边开裂原因进行了分析。
- The conchoidal fracture in casting steel was studied by means of instrumented impact test, facture analysis and metallographic examination. 采用示波冲击试验、断口分析和金相分析等方法,并结合断裂力学对铸钢中贝壳状断口的形成机理进行了研究。
- Through chemical composition analysis and metallographic examination the factors have been explored to unqualify the torque spanner . 采用化学成分分析和显微组织检测方法,对造成弹性元件不合格的原因进行了分析。
- Fractographic and metallographic examination, mechanical testing have been carried out on the failure analysis of the drilling collar. 对钻铤断裂原因进行了断口分析、金相检验和力学性能试验。
- Technical Superintendence and Consulting of Fossil Power Plant Metal Components.Mechanical Testing,Metallographic Examination and Failure Analysis. 火力发电厂金属部件的技术监督，机械性能试验、金相检验和失效分析，锅炉压力容器安全性检验。
- According to the EN standard requirement, the rail section is analyzed from the dimensional accuracy, mechanical property, metallographic examination. 本文按照法国钢轨供货技术要求EN标准要求,重点对钢轨断面尺寸精度、力学性能和金相检验等方面进行了分析研究。
- Fractograph analysis, metallographic examination and hardness testing have been applied in checking the reason of oil spout fracture in this paper. 对喷油嘴开裂原因进行了断口分析、金相检验和硬度测定。
- The reason of the pit on the surface of boring axis nitrated and grinded was analyzed by metallographic examination, micro-hardness testing and SEM. 摘要采用金相检验、显微硬度测定、扫描电镜等手段，对镗轴氮化、磨削后表面出现凹坑的原因进行分析。
- Fracture motorbicycle piston was analysed by means of chemical composition analysis, hardness testing, metallographic examination, and the macro and micro-fractography analysis. 摘要采用化学成分分析、硬度测定、金相检验以及断口宏、微观分析等方法，对断裂的摩托车活塞进行了分析。
- By chemical composition analysis,hardness test,metallographic examination and cracks analysis,the results indicate that the failure mechanism is hydrogen induced cracks (HIC). 通过化学成分分析、硬度测试、金相检验与裂纹分析,结果表明断裂失效机理为氢致开裂。
- Abstract： This paper anaIysed the reasons at edge-turnup cracking of industrial boiler steel pipe by means of chemical analysis and metallographic examination. 摘 要： 采用化学分析和金相检验等方法对工业锅炉烟管扳边开裂原因进行了分析。
- Failure analysis of parietal cracking in scavenging pump made of die casting aluminium alloy was carried out by means of metallographic examination,SEM analysis and so on. 借助金相显微镜、扫描电镜等分析手段,对压铸铝合金清洗泵腔壁断裂失效的原因进行了分析。
- Macro and microscopic metallographic examination and chemical composition analysis of compressor pressing rings cracks and its raw material were conducted. 压缩机压圈在调质处理后的机械加工过程中,在压圈端面及内孔壁上发现了裂纹。
