论文部分内容阅读
冷轧薄板往往采用维氏硬度试验方法测试硬度,测试过程复杂,且随着板材厚度越来越薄,测试后试样被压头穿透现象越来越明显,试验测试结果波动较大,测试结果偏离实际值。改用表面洛氏硬度试验方法,通过比对不同的试样处理方法以及不同的表面洛氏硬度测试标尺测试硬度值,并与维氏硬度测试结果进行比较,发现采用选用HR15T和HR30T标尺的表面洛氏硬度试验方法,并将试样支座变换为金刚石支座测试冷轧薄板硬度,可以省去试样表面打磨或者抛光程序,且测试后试样背面无明显痕迹,测试结果离散性小,精度高,适合冷轧薄板的硬度测试。
Cold-rolled sheet is often Vickers hardness test method to test the hardness, the test process is complicated, and as the thickness of the sheet becomes thinner and thinner, the test specimen is penetrated by the rammer more and more obvious, the test results fluctuate greatly, the test The result deviates from the actual value. By using surface Rockwell hardness test method, by comparing different sample processing methods and different surface Rockwell hardness test scale test hardness value, and comparing with the Vickers hardness test results, it is found that using HR15T and HR30T scale surface Rockwell hardness test method, and the sample holder is transformed into a diamond bearing test cold-rolled sheet hardness, polishing the surface of the sample can be omitted or polishing process, and no obvious marks on the back of the test sample, the test results discrete small, High precision, suitable for cold-rolled sheet hardness test.