金属热处理 ›› 2021, Vol. 46 ›› Issue (7): 191-194.DOI: 10.13251/j.issn.0254-6051.2021.07.037

• 工艺研究 • 上一篇    下一篇

冷镦钢自冲铆钉的热处理工艺试验

苏敏   

  1. 盈锋紧固系统无锡有限公司, 江苏 无锡 214028
  • 收稿日期:2021-03-16 出版日期:2021-07-25 发布日期:2021-12-10
  • 作者简介:苏 敏(1975—),男,高级技师,主要研究方向为紧固件的热处理工艺及表面强化技术,E-mail: 609597322@qq.com。

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

摘要: 利用网带式连续炉对SWRCH35K冷镦钢自冲铆钉进行多炉次淬火、回火热处理工艺试验,对其硬度进行检验。结果表明,当SWRCH35K冷镦钢自冲铆钉在连续炉中900 ℃微渗碳加热后,经860 ℃×90 min淬火+(200~215)℃×80 min回火处理的硬度值(≥530 HV)满足技术要求,自冲铆钉保持锋利的铆钉刃口同时又具有良好的基体塑性,铆接效果良好。

关键词: 自冲铆钉, SWRCH35K冷镦钢, 淬火, 回火, 硬度

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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