The reason that caused quenching cracks of the die was investigated by means of metallographic examination, chemical analysis and hardness measurement.
采用光学显微镜、成分分析和硬度测试等方法对淬裂的模具钢进行了检测与分析，对该模具钢的开裂原因进行了探讨。
Fracture tooth of gear shaft in well drilling pump was analysed by chemical analysis, mechanical testing metallographic examination macro and microfractography.
采用化学成分分析、力学性能测定、金相检验以及断口宏、微观分析等方法，对钻井泵齿轮轴断齿进行了分析。
The combustion resistance properties of TC4 and TC11 titanium alloys had been studied by means of titanium combustion testing equipment and metallographic examination.
利用钛合金阻燃性能测试装置，结合金相分析，研究了TC4和TC11两种合金的抗燃烧性能，分析了钛合金燃烧产物的显微组织特点。
In addition, the effect of welding heat input was studied. Qualitative and quantitative metallographic examination of the simulated microstructures was made to assist t...
此外，还研究了焊接热输入量对局部脆性区断裂韧性的影响，并通过定性、定量的金相显微组织评定对试验结果进行了分析。
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。
Relying on energy spectrum analysis and metallographic examination, we have studied and analyzed the spreading the quality course and forming mechanism of the above every layer.
并借助能谱分析和金相观察对上述三层的传质过程和形成机理进行了分析和探讨。
The fracture reason of 45 steel bar during cold drawing was analyzed by chemical inspection, metallographic examination, scanning electron fractograph and electron probe analysis.
采用化学成分分析、金相分析、断口扫描电镜及电子探针分析等手段，对4 5钢棒材冷拔断裂的原因进行了分析研究。
Introduced the working principle of computer-metalloscope, compares it with conventional metallographic examination, and discuss the application of computer in metallographic examination.
介绍了计算机—金相显微镜系统的工作原理，同传统金相检测进行对比，论述了计算机在金相技术中的应用。
The analysis of automobile engine crankshaft was conducted by macroscopic examination, fracture analysis, chemical composition analysis, metallographic examination and mechanical properties test.
通过宏观分析、断口分析、化学成分检验、金相检验和力学性能检测等方法，对汽车发动机曲轴断裂原因进行了分析。
Through dye check, X-ray test, and metallographic examination, quite a lot of cracks were found in the welds of a deaerator storage tank at the cogeneration plant of Shanghai Petrochemical Works.
上海石化总厂热电厂除氧器水箱，经着色探伤、x射线探伤、金相检验等方法检测后，发现焊缝有大量裂纹。
ABSTRACT: Cracks on the disc spring parts and raw materials, using metallographic examination, chemical analysis, hardness testing, scanning electron microscopy by means of a comprehensive analysis.
摘要：对碟形弹簧裂纹件和原材料，采用金相检验、化学分析、硬度试验、扫描电镜等手段进行综合分析。
Macro examination, metallographic microscope, microhardness tester and X ray diffractometer were utilized to study the failure reasons for connecting rode bearing bush of automobile engine.
采用宏微观检验、显微硬度测定、X射线衍射等方法对汽车发动机连杆轴瓦的失效进行了分析。
The influence of WC content, coating treatment on quality and wear-resistance property of composite layer was studied by using metallographic studying and wear examination.
通过金相观察、磨损实验研究了WC 颗粒含量及WC包覆改性处理对渗层质量和渗层耐磨性的影响。
Sampling examination by metallographic test was the traditional method for measuring the depth of the quenched layer in crankshaft, which could not meet the needs of the production of auto industry.
传统的曲轴淬火层深度测试方法是金相抽检，不能满足汽车工业生产需要。
Sampling examination by metallographic test was the traditional method for measuring the depth of the quenched layer in crankshaft, which could not meet the needs of the production of auto industry.
传统的曲轴淬火层深度测试方法是金相抽检，不能满足汽车工业生产需要。
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