| 摘要 |
PURPOSE:To facilitate continuous welding and to improve welding efficiency by cooling the rear side of the weld zones right after welding continuously within the range of the equation during welding. CONSTITUTION:The area along the weld line on the rear surface of a weldment 1 is cooled continuously in the range of the equationI(l=v.t where l is the length of the cooling part, v is a welding speed, t is the time required for cooling the rear side of the weld zone from the max. heating temp. down to inter- pass tem.). Therefore, it is possible to lower the ultimate temp. near the weld zone and to increase the cooling speed. The deformation by heat is reduced and the continuous welding is accomplished by reducing the inter-pass temp. easily. |
