Study on Cooling Rates and Mechanical Properties of H.T. Steel Plates in the Underwater Wet arc welding

고장력강의 습식 수중 아크용접에 대한 냉각율과 기계적 특성에 관한 연구

The feasibility for improving the cooling rates and mechanical properties of wet welding process is experimentally investigated by using new developed underwater wet electrodes and H.T. steel plates. Main results of this experimental study can be summarized as follows; 1) By shielding around weld arc surrounding, the cooling rates resulting from wet welds with developed electrodes on TMCP steel plates can be lower than of non-shielded wet welds. 2)A high quality of mechanical properties of wet welds on TMCP steel plates can be obtained with shielded weld arc surrounding.