本书为全国技工院校工业机械自动化装调专业教材。主要内容包括焊接基础知识、二氧化碳气体保护焊、手工钨极氩弧焊、焊条电弧焊，同时在每个模块后面附有世界技能大赛普及知识。

模块一 焊接基础知识

课题1　焊接概述及安全知识····················2

课题2　认识焊接接头、坡口及焊接位置··················8

课题3　焊接装配图的识读······················17

课题4　焊缝外部缺欠及检测······················27

世界技能大赛知识普及（1）······················40

模块二 二氧化碳气体保护焊

课题1　CO2气体保护焊设备的安装与调试·················44

课题2　认识CO2气体保护焊焊接材料······················54

课题3　CO2气体保护焊平敷焊······················61

课题4　CO2气体保护焊薄板对接焊······················72

课题5　CO2气体保护焊中厚板对接焊······················82

课题6　CO2气体保护焊T形接头平角焊····················92

课题7　防护罩壳的焊接······················100

课题8　支架的焊接······················109

世界技能大赛知识普及（2）······················120

模块三 手工钨极氩弧焊

课题1　手工钨极氩弧焊设备的安装与调试···················126

II · 焊接加工

课题2　认识钨极氩弧焊焊接材料····················134

课题3　手工氩弧焊基本操作技术······················139

课题4　钨极氩弧焊T 形接头平角焊···················151

世界技能大赛知识普及（3）······················157

模块四 焊条电弧焊

课题1　焊条电弧焊设备的安装与调试··················164

课题2　认识焊条电弧焊焊接材料······················171

课题3　焊条电弧焊平敷焊······················179

课题4　焊条电弧焊板V 形坡口平对接焊··················190

世界技能大赛知识普及（4）······················197