Study on the appropriateness of hardness test methods of cold-rolled sheet
Vickers hardness testing process for cold-rolled sheet is very complicated.Along with the thickness of cold-rolled sheet increasingly thinned,the phenomena of the test piece being penetrated by the indenter ball became more and more obvious,so that the testing results fluctuated acutely and deviated from the true value severely.In this paper,different scales of superficial Rockwell hardness and different sample treatment methods were adopted,and the superficial Rockwell hardness test results had been compared with the Vickers hardness test results.As the contrast results showed,HR15T and HR30T superficial Rockwell hardness test methods with diamond support adapted to hardness test of cold-rolled sheet.In the HR15T and HR30T test,the sample surface polishing process is unnecessary,and there were no obvious indentations on the back of the test piece,insuring small divergence and high precision.
cold-rolled sheet Vickers hardness superficial Rockwell hardness diamond support divergence
LIU Dong LI Rongfeng TU Yinghong
Research and Development Center of Wuhan Iorn and steel Group CORP.,Wuhan,China
国际会议
西安
英文
1-5
2012-10-01（万方平台首次上网日期，不代表论文的发表时间）