核电站TIG全位置自动焊打底工艺分析

Analysis of back welding procedure for TIG all-positional automatic welding in nuclear power plant

TIG全位置自动焊工艺是一种先进的焊接生产技术,受人为因素影响较小,且自动化程度较高,实用性强。对于此工艺而言,打底焊接是其中的关键技术难题。结合国防科工委核能开发科研项目《核岛辅助管道自动化焊接应用技术研究》中核心子课题——TIG全自动焊工艺,对其打底焊接工艺进行较为详细的分析和研究。介绍了TIG全自动焊中打底焊接工艺的影响因素——先决因素和工艺因素,针对先决因素提出解决途径,针对工艺因素找出其内在规律。

TIG all-positional automatic welding is an advanced welding technology,which is affected less man-made factor and has high level of automation and wide use,back welding is the key technology of this process.This article makes a particular study and research about back welding procedure,which is based on TIG all- positional automatic welding that is the key sub-project of ＂ Research on automatic welding applying science for nuclear island assistant pipes＂ project which is established by COSTIND.First, this article makes an analysis about the influencing factors：precondition factors and procedure factors, second, this article gives some solving suggestions about the precondition factors and finds out the inner disciplines about procedure factors.