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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。
- The broken high strength bolt was studied on chemical composition analysis, mechanical properties, micrographic, etc. 摘要对断裂的高强度螺栓进行了成分、性能及微观形貌结构等分析。
- 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。
- Fracture analysis of those bolts was conducted by means of macro examination, fractography and chemical composition analysis. 采用宏、微观检验和化学成分分析等方法对失效件进行了检测。
- 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。
- Chemical composition analysis, fractograph and microstructure examination were used to analyze the fractured first-stretched mould. 利用化学分析、宏观断口和显微组织分析的方法对引伸凹模断裂件进行了分析。
- The infolding in N80 grade microalloyed seamless pipe steels was analyzed by microscopic test,SEM and chemical composition analysis of slag inclusion. N80级微合金非调质无缝钢管在生产中出现内折缺陷。采用金相检验、夹渣物的化学成分分析及扫描电镜观察等方法对该缺陷进行了分析。
- Fracture analysis of the gear were conducted by means of macroexamination, SEM, metallography examination and chemical composition analysis. 采用宏、微观检验和化学成分分析等方法，对断裂齿轮进行了分析。
- 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。
- The crack in root of whorl of the redirector screw was analyzed by means of chemical composition analysis,microstructure examination and hardness testing. 摘要采用化学分析、金相核对总和硬度测试等方法对转向器螺杆螺纹根部的裂纹进行了分析。
- The reason of roll fracture has been analyzed by means of chemical composition analysis,macro fractograph,low magnification structure and microstructure examination. 采用化学成分、宏观断口、低倍组织及金相组织等分析方法对轧辊断裂原因进行了分析。
- The microstructure comparison,chemical composition analysis and neutral salt spray tests for two platings that are chemical plating and electroplating aiding were done. 对化学助镀和电解助镀两种镀层样品做了显微组织比较、化学成分分析和中性盐雾试验。
- The study of premature fracture failure of these shafts was made by means of SEM inspection, microstructure examination and chemical composition analysis. 采用金相检验、扫描电镜和化学成分分析等手段，对断裂变速箱二轴进行了检验分析。
- The edge crack on Q345B wide strip steel was analyzed by means of chemical composition analysis,mechanical property testing,micro metallographical examination. 采用化学成分分析、力学性能测试、显微组织观察和夹杂物检验等方法对有边缘裂纹的Q345B宽带钢进行分析。
- Reasons of failure in cooling pipe of the reactor have been studied by the chemical composition analysis,optical microscopy examination and electron probe microanalysis. 应用化学分析、金相和电子探针显微分析技术对反应器中冷却水管的失效原因进行了分析。
- 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。
- The failure of evaporate-self vessel was analyzed by means of chemical composition analysis, mechanical property testing, CTOD determination, micrographic and SEM inspection. 摘要采用化学成分分析、力学性能试验、宏微观检验等方法对自蒸发器材质和裂纹成因进行了分析。
- The failure of evaporate-self vessel was analyzed by means of chemical composition analysis,mechanical property testing,CTOD determination,micrographic and SEM inspection. 采用化学成分分析、力学性能试验、宏微观检验等方法对自蒸发器材质和裂纹成因进行了分析。
- Fracture analysis,energy spectrum analysis,chemical composition analysis,metallographic examination and hardness test were employed to sdudy the cracked shifting handle. 对活动拨柄开裂原因进行了断口分析、能谱分析、化学成分分析、金相检验和硬度测定。
