| 摘要 |
PURPOSE:To execute welding which has sufficient strength by fitting a backing member to a joint part to be joined of both reinforcing bars, and thereafter, executing welding from a notch opening part of the backing member, and filling a clearance with an incombustible material so that a molten metal does not flow. CONSTITUTION:With regard to a first and a second reinforcing bars A, A', they are set to a state that a backing body 1a is fitted to its welding joint part. When a welding work is executed through a notch opening part 1b of this body, in a first and a second reinforcing bars, its joining groove parts are melted, respectively, and they are going to flow in a molten metal state by using the backing body 1a as a receiving part. A clearance between a first and a second reinforcing bars and the curved surface of the inside periphery of the backing body is closed up by an incombustible material 2, therefore, it does not occur that said molten metal flows or drops down from this clearance, and the sufficient quantity is stagnant between a first and a second joint end parts and cooled and solidified. In such a way, welding having sufficient strength can be executed easily. |
