铝/钢连续驱动摩擦焊焊接扭矩和能量输入特征

doi:10.3901/JME.2018.02.110

机械工程学报 ›› 2018, Vol. 54 ›› Issue (2): 110-116.doi: 10.3901/JME.2018.02.110

• 特邀专栏:焊接过程测控与数值模拟 • 上一篇下一篇

铝/钢连续驱动摩擦焊焊接扭矩和能量输入特征

张昌青¹, 刘雄波¹, 吕广明¹, 芮执元², 李京龙³

1. 兰州理工大学材料科学与工程学院兰州 730050;
2. 兰州理工大学机电工程学院兰州 730050;
3. 西北工业大学材料学院西安 710072

收稿日期:2017-05-24 修回日期:2017-07-24 出版日期:2018-01-20 发布日期:2018-01-20
通讯作者: 刘雄波(通信作者),男,1992年出生,硕士研究生。主要研究方向为异种金属的摩擦焊接。E-mail:clipo@foxmail.com
作者简介:张昌青,男,1974年出生,副研究员,硕士研究生导师。主要研究方向为先进材料的摩擦焊、钎焊及阻焊等固相连接的基础理论与应用技术。E-mail:zhangcq@lut.cn

Friction Torque and Heat Input Characteristics During Continuous Drive Friction Welding of Aluminum to Steel

ZHANG Changqing¹, LIU Xiongbo¹, LÜ Guangming¹, RUI Zhiyuan², LI Jinglong³

1. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050;
2. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050;
3. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072

Received:2017-05-24 Revised:2017-07-24 Online:2018-01-20 Published:2018-01-20

摘要/Abstract

摘要： 基于摩擦扭矩是连续驱动摩擦焊焊接界面摩擦阻力做功的综合体现，采用主电动机定子电压电流法（Voltage and current of main motor，VCMM），获得了1050纯铝和E235低碳钢连续驱动摩擦焊过程焊接界面的摩擦扭矩，分析转速、顶锻压力对接头摩擦扭矩和不同焊接阶段能量输入的影响。结果表明：初始摩擦阶段是接头热量的积累阶段，以粘着摩擦产热为主；转速较低时，接头摩擦扭矩曲线只存在一个峰值或前后峰值特征不明显，此时接头发生失稳摩擦，转速升高，扭矩降低，初始摩擦阶段、准稳态阶段和焊接全过程能量输入都增加，但由于顶锻过程摩擦加热功率的降低使得顶锻阶段能量输入缓慢减小；后峰值扭矩和顶锻阶段能量输入与顶锻压力的变化呈正相关。

关键词: 顶锻压力, 连续驱动摩擦焊, 能量输入, 扭矩, 转速

Abstract: Friction torque is a comprehensive manifestation of friction resistance during the continuous drive friction welding. By monitoring the real-time voltage and current of main motor stator during the continuous drive friction welding of 1050 pure aluminum to E235 steel, evolutions of friction torque on the joint interface were obtained and the effects of rotation speed and forging pressure on the friction torque and heat input of each welding stage are analyzed. The results show that the initial friction stage is the process of heat input accumulation, where "stick" friction heat generation is predominant. When rotation speed is low, friction torque curve only has a peak or the initial and final peak features are not obvious, the whole friction process is unstable. With the increasing of rotation speed, friction torque increases, the heat input of initial friction stage, the quasi-steady state stage and the whole process is increased, but heat input in forging stage is slowly reduced due to the decrease of the friction heating power during the forging stage. Final peak torque and heat input in forging stage are positively correlated with the change of forging pressure.

Key words: continuous drive friction welding, forging pressure, friction torque, heat input, rotation speed

中图分类号:

TG456

张昌青, 刘雄波, 吕广明, 芮执元, 李京龙. 铝/钢连续驱动摩擦焊焊接扭矩和能量输入特征[J]. 机械工程学报, 2018, 54(2): 110-116.

ZHANG Changqing, LIU Xiongbo, LÜ Guangming, RUI Zhiyuan, LI Jinglong. Friction Torque and Heat Input Characteristics During Continuous Drive Friction Welding of Aluminum to Steel[J]. Journal of Mechanical Engineering, 2018, 54(2): 110-116.

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铝/钢连续驱动摩擦焊焊接扭矩和能量输入特征

Friction Torque and Heat Input Characteristics During Continuous Drive Friction Welding of Aluminum to Steel

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