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10 Effect of pulse current on micro-hardness and wear performance of cold-rolled T2 copper sheet
oleh: Hao Song, Weixin Hao, Xiaowei Mu, Fuqiang Zhao, Xi Hao, Guihong Geng
| Format: | Article |
|---|---|
| Diterbitkan: | IOP Publishing 2020-01-01 |
Deskripsi
The effect of pulse current assisted rolling on the micro-hardness and wear properties of T2 copper sheet was studied. The micro-hardness of copper sheet with pulse current assisted rolling was measured, and the hardness values of the copper sheet at different deformation rates were obtained. The wear performance of rolled copper sheet was tested by friction and wear tester. The results show that compared with traditional cold rolling, with the increase of deformation rate, the micro-hardness of copper sheet with pulse current assisted rolling increased after an initial decrease. The micro-hardness reaches the minimum value((82.25 ± 2.5)HV0.1) when the rolling deformation rate reaches 65%. The specific wear rate of the copper sheet reached the maximum(0.00176 mm ^3 /N · m) when the deformation rate of the copper sheet was 65%. The copper sheet has a smaller specific wear rate by using pulse current assisted rolling, and the oxygen element of the wear debris has a lower content. This indicates that pulse current assisted rolling can improve the wear resistance and oxidation resistance of copper sheet.