| 摘要 |
PURPOSE:To prevent escape to the back and forth of two metallic bands at a joint part and to improve weldability by forming chevrons that form superposed part of proper thickness by engaging with each other on joint faces of metallic bands and pressure welding by energizing. CONSTITUTION:In joint welding of metallic bands by narrow lap seam welding sectional faces of joint of metallic bands 1, 2 are made to slanted faces. Chevrons 9, 10 that engage with each other and superposed that thickness of the engaging part becomes properly thicker than plate thickness of metallic bands 1, 2 are provided in the joint part of the slanted faces. Metallic bands 1, 2 are engaged with each other and pressure welded by energizing in the state of close contact. In this method, welding of higher reliability can be effected by making pressure welding by rollers leaving welding allowance M. |
