《CO2焊在客车车身中焊接的应用研究论文》-毕业设计论文（学术).doc

摘要 PAGE IV l CO2焊在客车车身中焊接的应用研究 摘 要 随着客车日益向着大型、豪华、舒适、安全的趋势发展，焊接技术在客车行业也起着越来越重要的作用，高质量的品质对焊接质量的要求也越来越高。 CO2气体保护焊在客车车身焊接中有着很广泛的应用，对客车车身焊接质量的影响是不容忽视的。本文通过分析客车车身常用的焊接方法、原理、设备特点、工艺参数等，阐述了焊接方法及原理，焊接设备的特点以及客车车身CO2气体保护焊需要的质量及工艺要求，并确定了合理的焊接方法。揭示了客车车身焊接中需要注意的事项，明确了实际操作中合理的焊接工艺参数。文中对焊接缺陷产生的原因进行了详细分析，为在实际操作中尽量避免焊接缺陷提供依据，从而确保了客车车身的焊接质量。 关键词：客车，焊接质量，车身，骨架，焊接工艺 In the bus body the CO2 welding welding OF application research ABSTRACT With the increasingly toward large, luxurious passenger, comfortable and safe direction development situation, welding technology in the passenger car industry also plays a more and more important role, high quality quality on welding quality request more and more is also high. CO2 shielded welding in bus body.The welding has a wide range of applications, for bus body welding quality is non-negligible. Through analysis of bus body.The welding method, principle, used equipment characteristics, process parameters, learned welding method and principle, welding equipment of characteristic and bus body.The CO2 protection welding quality and technological requirements needed, and determines a reasonable welding method. Study the properties of materials, the principle of method, and the welding equipment characteristics, can make a definite reasonable welding process parameters, this paper analyzed, weld defects in practical operation avoid welding defects produce, thus ensure welding quality of bus body. KEY WORDS: Coaches, The welding quality, Body,Frame, Welding process 前言 目　录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc295233317 前　言 PAGEREF _Toc295233317 \h 1 HYPERLINK \l _Toc295233318 第1章 客车发展现状及趋势分析 PAGEREF _Toc295233318 \h 2 HYPERLINK \l _Toc295233319 1.1 客车综述 PAGEREF _Toc295233319 \h 2 HYPERLINK \l _Toc295233320 1.1.1 概述 PAGEREF _Toc295233320 \h 2 HYPERLINK \l _Toc295233321 1.1.2 国内外客车市场现状 PAGEREF _Toc295233321 \h 3 HYPERLINK \l _Toc295233322 1.2 本文研究的意义 PAGEREF _Toc295233322 \h 4 HYPERLINK \l _Toc295233323 第2章 客车车身结构分析 PAGEREF _Toc2952