Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2003.05a
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- Pages.155-158
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- 2003
Heat Transfer Simulation and Temperature Measurement for Heat Input Control in Orbital Welding
오비탈 용접에서 입열량 제어를 위한 열전도 시뮬레이션 및 온도측정
Abstract
Orbital GTA welding is used in the pressure pipe line of auto-mobile, LNG and plant piping. To weld the pipe line safely, to some extent, the back bead must be formed in the root pass. In the plate welding the back bead can be observed, but in the pipe welding, the back bead can not be observed directly. In the welding around circumference, the parameters such as gravity, surface tension and arc force are different at each position. And then D/B for welding condition at each position are required. We also studied about the setting of the optimum orbital welding condition by controlling heat input.
Keywords
- Orbital TIG welding;
- Pulse welding;
- Pipe welding;
- Peak current;
- Base current;
- Burn through;
- Heat input