고장력강의 습식 수중 아크용접에 대한 냉각율과 기계적 특성에 관한 연구

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

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.