hardness testing

The failed keyway broach was analysed by chemical analysis, hardness testing and metallograph-ic examination.

对断裂单键拉刀进行了化学成分分析、硬度测定和金相检验。

Development of The Automatic Steering Gear Rack Hardness Testing Control System

转向器齿杆硬度自动测试控制系统的设计

And the measured uncertainty in Vickers hardness testing was evaluated according to procedure without bias method and procedure with bias method.

利用无偏差估计方法和考虑硬度计偏差的方法对维氏硬度试验中的测量不确定度进行了评定。

Indentation methods of hardness testing comprise two principal groups.

压痕法测定硬度包括两大类.

In this paper, composition, microstructure and hardness testing were carried out with the two typical failed automobile brake drum.

对两种典型失效形式的汽车制动鼓化学成分、显微组织和硬度等进行了检验和分析。

Structure optimization of hardness testing device based on virtual design has been presented.

提出了一种基于虚拟仿真技术的硬度检测设备结构设计。

In material micro/ nano hardness testing, it was found that the hardness value is observably affected by material pile-up at the edges of indents.

在对材料的微/纳米级表层压痕硬度测试中，压痕周围出现的凸起对硬度的计算结果有很大的影响。

Hardness testing the depth and the trapezium of the carbonized layers and quench hardened layers.

炭化层和淬火硬化层的深度及梯度的硬度测试.

Study on lift-off effect in rail surface hardness testing by electromagnetic impedance method

电磁阻抗法检测钢轨踏面硬度中提离效应的研究

Chemical composition, hardness, microstructure and pitting defect appearance of the failed bearing rolling elements were studied by methods of chemical analysis, hardness testing, scanning electron microscope and metallographic examination.

采用化学分析、硬度测定、扫描电子显微镜检查和金相分析方法，对失效轴承滚动元件的化学成分、硬度、显微组织和滚动道（面）上的点状缺陷的形貌特征进行了分析。