Improved Safety: No arc chutes and enclosed vacuum interrupters with sealed contacts eliminate potential hazards resulting from exposed arcs or environmental contamination.
改善的安全：弧不滑下并且附上的真空阻碍者以被密封的联络消灭潜在危险起因于被暴露的弧或环境污染。
2
The arc is enclosed, and travel and mechanism forces are reduced.
弧是附上的，并且旅行和机制力量被减少。
3
In this paper, the reform process of the welding equipment and the choice of welding parameter about CO2 enclosed-arc welding as skelp end-welding in welded steel pipe mill are introduced.