焊接培训教材（供学习参考）焦作市巨行特种设备有限公司 2024 年 5 月 22 日第一章 电焊条.....................................................4第一节 焊条的组成及作用........................................4一、焊芯...........................................................4二、药皮...........................................................4第二节 焊条的种类、型号及规格................................5一、焊条的种类及型号...............................................5二、酸性焊条与碱性焊条.............................................9第三节 焊条的选用原则.........................................10一、等强度原则....................................................10二、等同性原则....................................................10三、等条件原则....................................................11第四节 焊条的检验和保管...................................11一、焊条的检验....................................................11二、焊条的贮存、保管及烘干........................................12第二章 焊接工艺.................................................12第一节 坡口形式和焊接位置.....................................13一、手工电弧焊的坡口..............................................13二、手工电弧焊焊接位置............................................14第二节 焊接工艺参数的选择...................................14一、焊条种类和牌号的选择..........................................15二、焊接电源种类和极性的选择......................................15三、焊条直径的选择................................................15四、焊接电流的选择................................................15五、电弧电压......................................................16六、焊接速度......................................................17七、焊接层数的选择................................................17第三节 基本操作技术..........................................17一、引弧..........................................................17二、运条..........................................
