刮板式冷凝器的焊接工艺说明书.doc.doc

PAGE PAGE PAGE II 摘 要 随着国民经济的发展，冷凝器已成为众多部门中的重要通用机械。在化工生产中，大中型冷凝器应用十分广泛。本次毕业设计的设计题目就是刮板冷凝器的设计制造与改造。 在科学技术飞速发展的当今时代，焊接已经成功地完成了自身的蜕变。很少有人注意到这个过程何时开始，何时结束。但它确确实实地发生在过去的某个时段。我们今天面对着这样一个事实：焊接已经从一种传统的热加工技艺发展到了集材料、冶金、结构、力学、电子等多门类科学为一体的工程工艺学科。而且，随着相关学科技术的发展和进步，不断有新的知识融合在焊接之中。 在机械设备生产加工过程中，焊接是其主要的生产环节，本课题围绕焊接工艺展开设计。焊接过程中的一整套工艺程序及其技术规定。内容包括：焊接方法、焊前准备加工、装配、焊接材料、焊接设备、焊接顺序、焊接操作、焊接工艺参数以及焊后处理等。 本课题的目的是通过对L型刮板式冷凝器的焊接工艺，例如：封头、筒体、管板、折流板等零部件的焊接工艺设计，使学生掌握设备主体材料的性能及制造工艺规程设计方法。 培养学生掌握焊接工艺的知识；能正确的掌握焊接方法，并且系统的整理已学过的知识；初步掌握综合分析焊接加工中的可能遇到的问题、金属材料的因素，并能提出正确的改进措施；掌握对金属材料加工工艺的基本原理和方法。 关键词：刮板冷凝器；焊接 Abstract With the development of the national economy, the condenser has become a large sector of the important general machinery. In chemical production, large and medium-sized condenser of a very wide range. The graduation project is the subject of the design scraper condenser and the transformation of the design and manufacture. Rapid development of science and technology in the contemporary era, welding has been successfully completed its own metamorphosis. Very few people noted that this process will start, when the end. However, it does indeed ground in the past a certain time. Today, we face this fact: welding from a traditional thermal processing techniques developed to collect the materials, metallurgy, structural, mechanical, electronic, and other categories of science and technology as one of the subjects. Moreover, with technology-related disciplines of development and progress. Production and processing machinery and equipment in the process of welding is the main production areas, the welding process started on the subject design. In the process of welding procedures and a set of technical requirements. Include: welding method, solder pre-processing, assembly, welding materials, welding equipment, welding sequence, welding operation, welding, and welding process parameters after treatment. The purpose of this issue through the L-shaped scraper condenser of the welding process, suc