NBC400二氧化碳焊机的结构与维修.docVIP

长春汽车工业高等专科学校 毕 业 实 践 报 告 题目/实践名称NBC—400二氧化碳焊机的结构与维修 专业 / 班级 学 生 姓 名 学 号 企业指导教师 校内指导教师 起 止 时 间 2011 09-2012 05 实 习 单 位 目录 绪论························································2 1.1引言··············································2 1.2实践单位的基本情况········································3 第二章 NBC—400二氧化碳焊机的用途描述·······························4第三章NBC—400二氧化碳焊机结构·····································5 3.1NBC——400二氧化碳焊机的组成································5 3.2 NBC——400二氧化碳焊机的工作原理···························6 第四章NBC——400二氧化碳焊机故障点·································9 第五章NBC——400二氧化碳焊机的使用与维护··························12 第六章NBC——400二氧化碳焊机故障排除记录··························14 参考文献···························································16 附录·······························································17 致谢·······························································18 中 文 摘 要 NBC—400型二氧化碳气体保护半自动电焊机性能稳定，抗干扰能力强，送丝速度不受电网电压及其它因素影响，并且具有电铆功能。因此在电气性能、焊接功能，方便使用维修等方面更加完善。被广泛应用于汽车、造船、冶金、机械、煤炭机械等行业的焊接生产。 本文主要论述其结构与其维修方法及维修点。 关键词：结构；原理；维修方法；维修点 Abstract NBC-400 carbon dioxide gas to protect the semi-automatic welding machine performance and stability, strong anti-jamming capability, wire feed speed from the power grid voltage and other factors, and electric riveting. Therefore, the electrical performance, welding functions, ease of use, maintenance and other more perfect. Been widely used in automobile, shipbuilding, metallurgy, machinery, coal machinery industry, welding production. This paper discusses the structure and maintenance and maintenance point.Keywords: structure; principle; maintenance methods; service points 第一章 绪论 1.1引言 NBC—400型二氧化碳气体保护半自动电焊机是在全国联合设计的基础上，并参考了日本、波兰、南斯拉夫等国家的焊机而重新设计并生产的。该机性能稳定，抗干扰能力强，送丝速度不受电网电压及其它因素影响，并且具有电铆功能。因此在电气性能、焊接功能，方便使用维修等方面更加完善。被广泛应用于汽车、造船、冶金、机械、煤炭机械等行业的焊接生产。 1.2实践单位的基本情况 我在解放公司专用车分公司实习，我们单位主要为解放卡车厂生产的自卸、军车、半挂、特种车辆、轻卡，提供车箱。 生产线上主要使用的电气设备有:NBC—400、200二氧化碳焊机，H