CF/PA6与6061铝合金的超声波自熔铆焊

doi:10.16183/j.cnki.jsjtu.2021.289

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (2): 221-229.doi: 10.16183/j.cnki.jsjtu.2021.289

所属专题：《上海交通大学学报》2023年“材料科学与工程”专题

CF/PA6与6061铝合金的超声波自熔铆焊

杨苑铎^a^,^b, 李洋^a^,^b(), 刘泽光^a^,^b, 王凯峰^c, 敖三三^a^,^b

a.天津大学材料科学与工程学院,天津 300350
b.天津大学天津市现代连接技术重点实验室,天津 300350
c.天津大学机械工程学院,天津 300350

收稿日期:2021-08-05 修回日期:2021-09-25 接受日期:2021-10-20 出版日期:2023-02-28 发布日期:2023-03-01
通讯作者: 李洋 E-mail:liyang86@tju.edu.cn.
作者简介:杨苑铎(1997-),硕士生,从事CFRTP超声波焊接研究.
基金资助:
国家自然科学基金(52075375);天津市研究生科研创新项目(2021YJSS028);天津市研究生科研创新项目(2021YJSO2S03)

Ultrasonic Self-Fusion Rivet Welding of CF/PA6 to 6061 Aluminum Alloy

YANG Yuanduo^a^,^b, LI Yang^a^,^b(), LIU Zeguang^a^,^b, WANG Kaifeng^c, AO Sansan^a^,^b

a. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
b. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300350, China
c. School of Mechanical Engineering, Tianjin University, Tianjin 300350, China

Received:2021-08-05 Revised:2021-09-25 Accepted:2021-10-20 Online:2023-02-28 Published:2023-03-01
Contact: LI Yang E-mail:liyang86@tju.edu.cn.

摘要/Abstract

摘要：

为了进一步提高碳纤维增强热塑性复合材料与轻量化金属之间的连接强度,提出一种新型超声波自熔铆焊方法.该方法通过超声波焊接将短碳纤维增强尼龙6(CF/PA6)熔化并压入铝合金板上预制的通孔内,从而实现CF/PA6与铝合金的连接,连接机制为机械自锁.实验结果表明,随着孔数增加,焊接的整体力学性能有所增加,最优焊接能量为 2 000 J,最高剪切强度为(58.9±7.1) MPa.依据焊接功率和焊头位移信号,可将超声波自熔铆焊过程分为3个阶段:压紧阶段、导能筋嵌入阶段和充孔阶段.当能量一定时,随着孔数增加,导能筋会更早嵌入CF/PA6中,且焊接时间缩短.相对于焊接能量,孔数对焊接过程的影响更大.得益于机械自锁的连接机制,该方法对金属种类没有限制,具有较为广阔的应用前景.

关键词: 超声波塑料焊接, 碳纤维增强热塑性复合材料, 铝合金, 异种材料连接

Abstract:

In order to further improve the strength between carbon fiber reinforced thermoplastic (CFRTP) and lightweight metals, a novel ultrasonic self-fusion riveting method is proposed, in which carbon fiber reinforced polyamide 6(CF/PA6) is melted by ultrasonic welding and pressed into the prefabricated hole on the aluminum alloy plate to realize the join between CF/PA6 and aluminum alloy. The joining mechanism is mechanical self-locking. The results show that the overall mechanical performances increase with the increase of the number of holes. The optimal welding energy is 2 000 J and the maximum shear strength is (58.9 ± 7.1) MPa. According to the welding power and welding displacement signal, the ultrasonic self-fusion riveting process can be divided into the pressing stage, the energy director embedding stage, and the hole filling stage. When the energy is constant, with the increase of the number of holes, the energy director will be embedded into CF/PA6 earlier, and the welding time will be shortened. Compared with the welding energy, the number of holes has a greater impact on the welding process. Because ultrasonic self-fusion riveting mainly realizes the join between CFRTP and metal through mechanical self-locking, this method is not limited by metal types and has a broad application prospect.

Key words: ultrasonic plastic welding, carbon fiber reinforced thermoplastic (CFRTP), aluminum alloy, dissimilar materials joining

中图分类号:

TG453+.9

杨苑铎, 李洋, 刘泽光, 王凯峰, 敖三三. CF/PA6与6061铝合金的超声波自熔铆焊[J]. 上海交通大学学报, 2023, 57(2): 221-229.

YANG Yuanduo, LI Yang, LIU Zeguang, WANG Kaifeng, AO Sansan. Ultrasonic Self-Fusion Rivet Welding of CF/PA6 to 6061 Aluminum Alloy[J]. Journal of Shanghai Jiao Tong University, 2023, 57(2): 221-229.

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文献	材料	处理方法	最优接头强度/MPa
文献[16]	CF/PA6钛合金	对金属板进行氧化处理	约7.5
文献[8]	CF/PA66016铝合金	对金属板表面进行激光处理	约14
文献[12]	CF/PA6A1050铝合金	在金属表面制造纳米级尖锐凸起	24.9
文献[11]	CF/PA67075-T6	对金属板表面进行纳秒激光处理	37.5

CF/PA6与6061铝合金的超声波自熔铆焊

Ultrasonic Self-Fusion Rivet Welding of CF/PA6 to 6061 Aluminum Alloy

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