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Study on an Evaluation of Remote Control Torch Performance to reduce CO2 Welding Defects

CO2 용접결함 감소를 위한 원격 제어 토치 성능 평가 연구

  • Kim, Jeong-Hyeok (Department of Shipbuilding & Marine, and Ocean, Kunjang University) ;
  • Oh, Seck-Hyeog (Department of Mechanical and Automotive Engineering, Kunsan University) ;
  • Lee, Hae-Gil (Department of Shipbuilding & Marine, and Ocean, Kunjang University)
  • 김정혁 (군장대학교 조선해양계열학과) ;
  • 오석형 (군산대학교 기계자동차공학부) ;
  • 이해길 (군장대학교 조선해양계열학과)
  • Received : 2014.07.04
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

$CO_2$ welding is used widely in the field. On the other hand, welding defects occur when welders cannot adjust the current and voltage needed for welding and have to stop working to adjust the current and voltage, causing sudden cooling down of the welding structure inside a vehicle or tank where the control panel is invisible or when work site is far. This study used three types of existing $CO_2$ welders. This also applied SS400 rolled steel for welding structural purposes for remote control torch welding, perform a welding test through v-groove butt welding with a remote control torch and existing $CO_2$ welding torch, conducted visual inspection on the appearance of a welded top bead. In addition, the appearance quality of the welding part was monitored mainly through penetrant testing and a bending test to evaluate the welding defect reduction and the effect on the performance and compatibility by replacing the existing welder.

Keywords

$CO_2$ welding;Lack of Penetration;Welding cable;Wire feeding devices;Welding torch

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