자동용접시스템을 이용한 파이프의 용접특성 평가 = A Study on Welding Properties of Pipe using Automatic Welding System

다국어 초록 (Multilingual Abstract)

Although manual welding by workers is still performed in general industries, international standards for product quality have recently been raised across the entire industry, and the use of automatic welding equipment is recommended. Welding in small spaces relies mostly on the welder's skills, and the poor working environment results in low productivity and a very high defect rate. To solve these problems, an automatic welding device that can be operated in a small space is needed. In particular, since there are many environments where it is difficult for people to access and weld directly, systems that can automatically weld are being developed. Therefore, in this study, we have developed an automatic welding system that can be operated in narrow spaces, welded the pipe materials, and evaluated the properties of the welded materials. As a result of welding by changing welding conditions such as welding voltage, welding speed, weaving speed, and feeding speed, the best bead was formed under the conditions of welding voltage of 22V, weaving speed of 12cm/min, feeding speed of 400cm/min, and welding speed of 80mm/min. The tensile strength of the welded pipe was 434 MPa and the strain was approximately 0.28.