Study on Effect of Underwater Shield Welding

J. Ocean Eng. Technol. 1991;5(1):81-87.

실드 수중용접의 교계에 관한 연구

김민남,오세규,서강태,박정배

부산공업대학 기계공학과,부산수산대학교 공대 기계공학과,부산공업대학 기계공학과,한국원자력발전소

Keywords: TMCP Stee(Thermo-Mechanical Controlled Process Steel), H.T. Stee(High Tensile Strength Steel), W.M(Weld Metal), Welding Condition, Absorbed Energy, Cooling-Rates

핵심용어: 제어압연공정강, 고장력강, 용착금속, 용접조건, 흡수에너지, 냉각속도

Abstract

In this paper, an attempt has been taken for improving the weldability of wer welds of TMCP steel plate by shielding around weld arc surroundings. The principal results of this experimental investigation can be summarized as follows: 1) The cooling rates resulting from wet wlds with the developed electrode on TMCP steel plate could be lower than that of the non-shieled wet welds. 2) The metallurgical characteristics in umderwater wet welds of TMCP steel plate and the developed electrode could be improved by shielding around weld arc surroundings.