《高强度级别输气管道的焊接方法研究》-毕业论文.doc

重庆科技学院 毕业设计（论文） 题 目 高强度级别输气管道的焊接方法研究 院 （系） 冶金与材料工程学院 专业班级 材控普 学生姓名 学号 指导教师 职称 副教授 评阅教师___ _ 职称___ 年 6 月 10日 摘 要 本课题中进行的主要工作如下：西气东输天然气管线概念设计，对工艺参数进行优化设计，主要有采用高压输气工艺达到减少压气站；输气管道的优化设计，主要有利用高强度级别的X120钢制造输气管道达到降低管道壁厚以减轻施工及搬动难度，同时还可大大减低焊材的用量；这些优化设计都能实现节约工程投资和运行成本的优化设计。输气焊接管道制造工艺流程设计；针对X120管线钢的焊接工艺进行了模拟焊件实验方案的设计，同时还对X120管线钢的力学性能及焊接性问题进行了分析。最后再对输气管道施工流程，现场焊接工艺设计，检验及质量保障措施的确定。 关键字: 输气管道 概念设计 X120管线钢 焊管制造 焊接工艺 Abstract  The subject of the main work carried out as follows: West-East gas pipeline design, on the process parameters to optimize the design, mainly using high-pressure gas transmission technology to reduce the pressure of gas stations; gas pipeline optimization design, mainly using high-intensity level of X120 pipeline steel to reduce the pipe wall thickness to reduce the difficulty of construction and moving, which can also greatly reduce the amount of welding materials; the optimal design can achieve economies of investment and operating costs of the optimal design. Gas transmission pipeline welding manufacturing process design; for X120 pipeline steel welding process was simulated welding pieces of the design of experimental programs, but also on the mechanical properties of X120 pipeline steel and welding are analyzed. Finally, on the gas pipeline construction process, on-site welding process design, testing and quality assurance measures to determine. Keywords: Gas Pipeline Conceptual Design X120 pipeline steel Pipe Manufacturing Welding Process 目录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc263927266 摘 要 PAGEREF _Toc263927266 \h I HYPERLINK \l _Toc263927267 Abstract PAGEREF _Toc263927267 \h II HYPERLINK \l _Toc263927268 1.天然气输气管道概论 PAGEREF _Toc263927268 \h 2 HYPERLINK \l _Toc263927269 2.西气东输管道概念设计 PAGEREF _Toc