特种焊在超厚不锈钢板焊接中的应用研究毕业设计论文

特种焊在超厚不锈钢板焊接中的应用研究摘　　要

本研究论文主要是研究在石化等行业耐高温、高压压力容器的制造工艺特别是焊接工艺的研究，重点是高能束焊在复杂环境里使用的压力容器用超厚钢板的焊接应用。焊接技术是随着生产和技术不断发展的，超厚超厚不锈钢板板是石化行业压力容器的主要材料，焊接技术在压力容器的制造工艺中占有主要地位。在众多焊接结构中，压力容器是质量要求最高、技术难度最大、先进的焊接工艺方法应用最全、采用钢材品种最多的全焊结构。通过对某项目00Cr17Ni14Mo2厚壁超低碳超厚不锈钢板压力容器化学成分分析,对管道进行焊接工艺评定从而制定了正确的焊接施工工艺,保证了该项目00Cr17Ni14Mo2超低碳超厚不锈钢板压力容器的焊接质量,为类似的管道焊接提供了技术工艺和参数。

关键词: 特种焊；超厚不锈钢板；高压管；焊接工艺

Abstract

This research paper is to study in the petrochemical industry, high temperature, high pressure vessel manufacturing processes, especially welding technology research, focusing on high-energy beam welding pressure vessels used in a complex environment with a thick steel plate welding applications. With manufacturing and welding technology is evolving technology, thick thick stainless steel plate board is the main material in the petrochemical industry pressure vessel welding technology plays a major position in the manufacturing process of the pressure vessel. Among welded structures, pressure vessels is the highest quality, most difficult technical, advanced welding process for the most complete, the most used varieties of all-welded steel construction.Through a project 00Cr17Ni14Mo2 thick walled ultra-low carbon stainless steel high-pressure pipeline chemical analysis, pipeline welding procedure qualification in order to develop the proper welding construction to ensure that the project 00Cr17Ni14Mo2 thick ultra-low carbon stainless steel high-pressure pipeline welding quality, for a similar pipeline welding process and provides technical parameters.

Keywords: special welding; thick stainless steel plates; high-pressure pipe; Welding Technology

目录摘　　要 iiAbstract iii第一章 绪论 31.1压力容器的概况 31．1．1定义 31．1．2分类概述 41.2 高压输气管道 41．2．1应用情况 41．2．2技术特点和制造要求 5第二章  00Cr17Ni12Mo2高压输气管道 72.1  00Cr17Ni12Mo2 72．1．1 简介 72．1．2化学成份 72．1．3力学性能 82.2 母材 8第三章  管道焊接 103.1 焊接性分析 103.2 焊接工艺 113．2．1焊接方法 113．2．2焊接坡口 113．2．3焊接材料 123．2．4焊接工艺要求 133.2 焊接操作过程 153．2．1底部层焊缝的焊接 153．2．2中间层和盖面层的焊接 173．2．3焊接注意事项 183．2．3质量检测及结果 18第四章  焊接工艺规程 194.1  先决条件 194．1．1 环境 194．1．2 管道焊接控制流程图 204．1．3 焊接材料 204．1．4 焊接设备 214．2焊接基本要求 224．2．1 焊接施工程序 224．2．2 对口质量要求 224．2．3焊接材料选用 234．2．4焊接 234．2．5点焊 234．2．5工艺要点 244．2．6焊后热处理 26总结 27参考文献 28致　　谢 29