低碳钢表面电弧堆焊耐磨层工艺及组织性能分析焊接专升本毕业论文.doc

PAGE 毕业论文 及组织 专 业 焊接技术与工程 类 别 专升本 目 录 摘 要···········································································································································Ⅲ ABSTRACT·······························································································································Ⅳ 1 前 言 1.1 堆焊技术的发展及应用··········································································································1 1.1.1 基本概念···························································································································1 1.1.2 我国堆焊技术的发展状况·······························································································3 1.1.3 堆焊技术在生产中应用···································································································4 1.2 堆焊方法··································································································································4 1.2.1 焊条电弧堆焊···················································································································4 1.2.2埋弧堆焊····························································································································6 1.2.3 钨极氩弧堆焊···················································································································7 1.3 课题内容及目的······················································································································8 2 实 验 2.1 实验材料··································································································································9 2.1.1 母材及其性能···················································································································9 2.1.2 焊材成分及其性能···························