Heat Treatment of Metals ›› 2021, Vol. 46 ›› Issue (7): 191-194.DOI: 10.13251/j.issn.0254-6051.2021.07.037

• PROCESS RESEARCH • Previous Articles     Next Articles

Experimental study of heat treatment process of cold heading steel self piercing rivets

Su Min   

  1. Infastech Fastening SystemsWuxi Limited, Wuxi Jiangsu 214028, China
  • Received:2021-03-16 Online:2021-07-25 Published:2021-12-10

Abstract: In order to test the hardness of the self piercing rivets made of the SWRCH35K cold heading steel, quenching and tempering heat treatment processes were carried out in a mesh belt continuous furnace. The results show that when the rivets are quenched by heating at 860 ℃ for 90 min and tempered at different temperatures in the range of(200-215) ℃ for 80 min after micro-carburizing at 900 ℃, the hardness value (≥ 530 HV1) can meet the technical requirements, and at the same time, the self piercing rivets keep sharp edge and good plasticity of matrix, with good riveting effect.

Key words: self piercing rivet, SWRCH35K cold heading steel, quenching, tempering, hardness

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