加热元件优化设计对7075铝合金与CF/PEEK电阻焊接的影响

doi:10.19936/j.cnki.2096-8000.20260528.009

复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (5): 63-68.DOI: 10.19936/j.cnki.2096-8000.20260528.009

加热元件优化设计对7075铝合金与CF/PEEK电阻焊接的影响

谌顺心, 徐任信^*

武汉理工大学材料科学与工程学院,武汉 430070

收稿日期:2025-04-07 出版日期:2026-05-28 发布日期:2026-07-01
通讯作者: 徐任信(1973—),男,博士,教授,研究方向为先进复合材料制备技术,xurenxin@whut.edu.cn。
作者简介:谌顺心(2000—),男,硕士研究生,研究方向为异质结构的电阻焊接。
基金资助:
国家自然科学基金(62171331)

Effect of heating elements optimization design on resistance welding of 7075 aluminum alloy and CF/PEEK

CHEN Shunxin, XU Renxin^*

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Received:2025-04-07 Online:2026-05-28 Published:2026-07-01

摘要/Abstract

摘要： 加热元件作为电阻焊接中的关键界面材料,其种类和焊接参数直接影响焊接接头力学性能。通过对加热元件制备工艺的优化,发现其浸润性、热稳定性和力学性能均能满足7075铝合金(7075AA)与碳纤维增强聚醚醚酮(CF/PEEK)复合材料的电阻焊接要求。同时研究了不同焊接电流工艺下,不锈钢网加热元件(SS-HEs)与碳纤维加热元件(CF-HEs)对电阻焊接的影响。结果表明,随着焊接电流的升高,两种体系接头的单搭接强度(Lap Single Strength,LSS)均呈现先升高后降低的趋势。SS-HEs的LSS在35.0 A时达到最大值8.76 MPa,但焊接接头断面中CF/PEEK板表面由于界面大部分区域没有达到焊接温度,出现大面积未粘现象;CF-HEs的LSS在15 A时达到最大值10.47 MPa,相比于SS-HEs的接头强度提高了19.52%,其焊接接头断面铝合金表面出现热塑层脱黏现象。

关键词: 7075AA, CF/PEEK复合材料, 加热元件, 工艺参数

Abstract: As a key interface material in resistance welding, the type of heating elements and welding parameters directly affect the mechanical properties of welded joints. Through the optimization of the preparation process of heating elements, it is found that their wettability, thermal stability and mechanical properties can meet therequirements forresistance welding of 7075 aluminum alloy (7075AA) and carbon fiber reinforced polyether ether ketone (CF/PEEK) composites. The effects of stainless steel mesh heating elements (SS-HEs) and carbon fiber heating elements (CF-HEs) on resistance welding under different welding current processes are also investigated. The results showed that with the increase of welding current, the lap single strength (LSS) of the joints of the two systems showed a trend of first increasing and then decreasing. The LSS of the stainless steel mesh heating elements (SS-HEs) reached a maximum value of 8.76 MPa at 35.0 A. The surface of the CF/PEEK plate in the cross section of the welded joint showed a large area of non-bonding because most of the interface area did not reach the welding temperature. The LSS of carbon fiber heating elements (CF-HEs) reached a maximum value of 10.47 MPa at 15 A, and the joint strength was increased by 19.52% compared with that of SS-HEs. Debonding of the thermoplastic layer occurred on the aluminum alloy surface of the welded joint section.

Key words: 7075AA, CF/PEEK composites, heating elements, process parameters

中图分类号:

TB332

谌顺心, 徐任信. 加热元件优化设计对7075铝合金与CF/PEEK电阻焊接的影响[J]. 复合材料科学与工程, 2026, 0(5): 63-68.

CHEN Shunxin, XU Renxin. Effect of heating elements optimization design on resistance welding of 7075 aluminum alloy and CF/PEEK[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(5): 63-68.

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加热元件优化设计对7075铝合金与CF/PEEK电阻焊接的影响

Effect of heating elements optimization design on resistance welding of 7075 aluminum alloy and CF/PEEK

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