Effect of thin rubber layer on shot peening quality of metal surface

doi:10.13251/j.issn.0254-6051.2023.06.049

Abstract

Abstract: Finite element analysis model of multiple shot peening was established to analyze the improvement effect of thin rubber layer on the surface shot peening quality of Q235 steel and compared with the traditional shot peening method, and then it was verified by experiments. The results show that compared with the traditional shot peening, paving thin rubber layer can improve the surface residual compressive stress while reducing the surface roughness of the specimen, but the depth range of the residual compressive stress layer is reduced. The thickness of thin rubber layer is the key factor affecting the depth of residual compressive stress layer. The thin rubber layer increases the impact area of the shot peening on the surface of the specimen, prolongs the impact time, and effectively disperses the single shot impact energy, so that the shot peening quality of the specimen surface can be improved on the premise that the strength of the residual compressive stress field on the surface of the specimen is basically the same as that of the traditional shot peening.

Key words: shot peening, thin rubber layer, surface roughness, residual compressive stress, finite element method

CLC Number:

TG147

Fan Junkai, Liu Shuai, Jia Zenghui, Zhao Wu, Liu Wei. Effect of thin rubber layer on shot peening quality of metal surface[J]. Heat Treatment of Metals, 2023, 48(6): 291-296.

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