1. Research on tribological properties of H13 steel of shield machine hob by laser shot peening.
- Author
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Zhang, Yifeng, Yang, Xuefeng, Wang, Shouren, Li, Wanyang, Wu, Qiang, Zhao, Wangliang, Gao, Yang, and Wang, Kai
- Subjects
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LASER machining , *RESIDUAL stresses , *STEEL , *MACHINE performance , *ANTIFOULING paint , *FRICTION - Abstract
In this paper, the laser shot peening (LSP) technology of H13 steel is studied to improve the friction and wear performance of shield machine hob. And to utilize the LSP experiment and simulation analysis, the influence of LSP parameters on the friction and wear performance of H13 steel after strengthening is studied. The numerical simulation study reveals the variation law of laser parameters on residual stress and stress layer depth. Study on friction and wear characteristics of H13 steel after LSP. The results show that the maximum residual stress of H13 steel is 911 MPa, and the hardness is 650.7 HV, when there are three times of black paint absorption and LSP. Compared with the raw material, the residual stress is increased by 125%, and the hardness is increased by 18%. And its friction coefficients and wear volume were relatively lower than other schemes. The average friction coefficient and wear volume were reduced by 10.8% and 57.2% respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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