X80管线钢闪光对焊工艺研究  

Research on Flash Butt Welding Procedure of X80 Pipeline Steel

作　　者：廖井洲 胡建春[3] 胡松青 

机构地区：[1]中国石油大学理学院,山东青岛266580 [2]中国石油天然气管道第五工程公司,河北任丘062552 [3]中国市政工程华北设计研究总院有限公司,天津300074

出　　处：《青岛大学学报（工程技术版）》2015年第3期109-113,共5页Journal of Qingdao University(Engineering & Technology Edition)

摘　　要：针对管道接头焊接质量问题,本文在分析X80管线钢化学成分及力学性能的基础上,结合选定的焊接方法和焊接工艺,对管线钢闪光对焊的焊接性进行了实验,并对焊接接头的力学性能和微观断口形貌进行了分析。研究结果表明,闪光对焊得到的焊接接头性能良好,无任何分解裂纹、未焊透等缺陷,接头的强度、硬度、韧性等性能均满足X80管线钢的安全要求。本研究所选用的焊接方法和工艺参数可用于该管材的现场焊接,具有一定的实际应用价值。According to the welding quality requirements of long-distance construction, this paper resear- ches on flash butt welding techniques for X80 pipeline steel. Flash butt welding machine of K584Ch is an advanced pipeline automatic welding machine, which represents the international level of the pipeline flash butt welding. Based on analyzing the chemical composition and mechanical properties, the flash butt weld- ing performance of X80 welded joints were studied, combined with the selected welding process and techni- cal parameters. The results showed that the flash butt welding performance of X80 steel is very good, and the strength, hardness and low temperature toughness can meet the safety requirement of X80 grade pipe- line. The welding method and the technological parameters can be used for site welding.

关 键 词：X80管线钢 闪光对焊 焊接工艺 力学性能 断口形貌 

分 类 号：TG457.6[金属学及工艺—焊接]