目 录
一、焊接概述 ··················································· 1
1.1 焊接的定义 ················································ 2
1.2 焊接方法的分类 ············································ 2
1.3 常用焊接方法基本特点与应用 ································ 2
1.4 焊缝符号 ·················································· 3
二、焊接设计 ··················································· 7
2.1 材料选用 ························