| 摘要 |
<p>The present invention provides a multilayered electro gas arc welding method capable of preventing the spread of brittle cracks even if brittle cracks are generated, and which utilizes a torch for electrode wires supplying electrode wires for welding objects of a steel plate to be welded, and a welding device including a welding body connected to the torch for electrode wires. The present invention alternately performs a first molten metal forming step which forms an arc molten metal formed by the electrode wires of the torch for electrode wires; and a second molten metal forming step which has a lower heat input than the first molten metal forming step and forms molten metals.</p> |
