内容充实论文范本2资料.doc

浙江水利水电专科学校毕业论文（设计） PAGE  PAGE - 31 - ZHEJIANG WATER CONSERVANCY AND HYDROPOWER COLLEGE 毕业设计（论文） 题　　目: 自动埋弧焊控制系统分析 系 （部）： 专业班级： 　 姓 名： 学 号： 指导教师： 2009 年 12 月 30 日～ 2010 年 6 月 10 日 自动埋弧焊控制系统分析 摘要：埋弧自动焊是电弧在焊剂层下燃烧而进行焊接的一种方法。埋弧自动焊的生产率高、焊缝质量好、机械化程度高，工人劳动条件好，在生产中获得了广泛的应用。埋弧自动焊的开发应用对焊接方法是一项重要的突破。 自从出现焊条电弧焊后，焊接技术的开始在工业生产中获得了广泛的应用，并取得了可观的经济效益。但是，焊条电弧焊的生产效率低，无法实现机械化，完全靠手工操作。由于焊条不能连续送进，而焊接电流不能过大（电流过大会使药皮脱落），使焊条电弧焊的改进受到限制。 到了20世纪30年代，人们改变了传统的思想，把药皮和焊芯分开。药皮被制成颗粒状焊剂，铺在焊接处，用光焊丝做电极进行埋弧焊。这样做的结果，使焊接电流大大提高（因为不用担心药皮脱落），而且焊丝可以做成盘圆方式连续送给，节省了换焊条的时间，焊接工作即可连续进行。这就是后来的埋弧焊。人们又设计了焊枪、送丝结构、焊接小车、控制电路等，使埋弧焊实现了机械化。 我现在开始从事自动埋弧焊机的调试工作，对于这个主流的焊接方式我充满信心，所以写了我公司自动埋弧焊的题材，在研究自动埋弧焊系统中遇到很多困难，经过努力结合所学知识分析了其系统工作原理。 Abstract：Automatic submerged arc welding is in flux layer under the arc welding method of combustion.Automatic submerged arc welding the weld productivity, good quality, high degree of mechanization, labor conditions, in production in a wide range of applications. Automatic submerged arc welding of development and application of welding method is an important breakthrough. Since the emergence of electric arc welding, welding technology in industrial production in a wide range of applications, and gained considerable economic benefit. However, the production of electric arc welding low efficiency, not realizing mechanization, completely by manual operation. Due to the electrode for infeeding, welding current and not so high that the current , drug skin electric arc welding is restricted to improve. In the 20th century 30s, people changed the traditional ideas, the drug skin and welding core apart. Drug skin is made of granular flux, spread out in the welding wire, do electrodes on the submerged arc welding. To do so, welding current and greatly improved drug skin wires can make plates, save for a row of time, welding rod for continuous can work. It was later submerged arc welding.