先进的车身焊接技术

摘要

With the application of new material of galvanized steel and high strength steel and aluminum alloy in the body manufacturing, automobile body welding technology based on the power frequency of resistance welding and MAG welding doesn't meet the development trend "lightweight, safety, energy saving" of the body manufacturing.Advanced welding techniques such as MF resistance welding and laser penetration welding and laser filler wire welding and laser tailor-welded blanks and CMT welding technology and friction stir welding technology has been applied in automobile body manufacturing.This paper describes the working principle and technical characteristics of the above several advanced welding technology, and their application in automobile body manufacturing and economic benefits .There is some reference function to the body design and welding process.%随着镀锌钢板、高强度钢、铝合金等新材料在车身制造中的应用,以工频电阻焊为主,辅以MAG焊的车身焊接技术,逐步难以满足车身制造“轻量、安全、节能”的发展趋势.先进的焊接技术,例如中频电阻焊、激光钎焊、激光熔焊、激光拼焊板技术、CMT焊接技术、摩擦搅拌点焊技术等在车身制造中逐步得到应用.简述了几种先进焊接技术的工作原理和技术特点,及其在车身制造中的应用特点和经济效益.对车身设计和焊装工艺方案规划有一定的借鉴作用.