焊工培训资料.doc.doc

目录 1 焊接概述------------------------------------------------------------------------------------------------------ 4 焊接的定义[1] ------------------------------------------------------------------------------------------------ 4 焊接过程的物理本质[1] -------------------------------------------------------------------------------------- 4 焊接方法的分类[2] -------------------------------------------------------------------------------------------- 4 常用焊接方法基本特点与应用[2] [3] ----------------------------------------------------------------------- 4 焊缝符号[4] ----------------------------------------------------------------------------------------------------- 4 基本符号------------------------------------------------------------------------------------------------------------------ 4 辅助符号------------------------------------------------------------------------------------------------------------------- 8 补充符号-------------------------------------------------------------------------------------------------------------------- 9 焊缝尺寸符号-------------------------------------------------------------------------------------------------------------- 9 指引线及说明(见表 1-5-6 ) ----------------------------------------------------------------------------------------- 9 焊缝符号标注的原则和方法(见表 1-5-7 ) ---------------------------------------------------------------------- 9 常见金属焊接方法代号(见表 1-5-8 ) ---------------------------------------------------------------------------- 9 焊缝符号标注示例(见表 1-5-9 ) -------------------------------------------------------------------------------- 9 2 焊接设计---------------------------------------------------------------------------------------------------- 12 材料选用------------------------------------------------------------------------------------------------------ 12 母材材料选用------------------------------------------------------------------------------------------------------------ 12 钢结构对材料的要求[5] ------------------------------