水下高压干法GMAW焊接方法

Study on underwater hyperbaric dry GMAW

高压干法焊接是海洋工程水下维修的有效方法,多年来国内外进行过多种焊接方法的尝试,应用中都有各自的问题和局限。对GMAW方法在高压干法环境中的特性进行了系统的研究,通过试验条件的建立及高速摄像技术的应用,开展了高压空气条件下GMAW方法的电弧特性的试验研究以及焊接过程稳定性的建立,结合对焊接接头微观组织及力学性能的测试分析,形成了一套完整的工艺技术,为水下维修工程焊接技术的发展,开辟了一条新路。

Hyperbaric dry welding is an effective way of underwater repair in offshore engineering. Though various welding methods have been attempted at home and abroad for years,problems and limitations exist. This paper conducted a systematic study on character of GMAW method in hyperbaric dry environment. Experimental study on arc characteristics and the establishment of welding process stability are both developed by means of determination of test condition and the application of High-speed camera technology. Combining with analysis of microstructure and mechanical property of welded joints,a complete technology is formed. The research has opened a new road for the development of welding technology in underwater repair engineering.