| 摘要 |
PROBLEM TO BE SOLVED: To quickly gas-shield arc weld steel rails being separated at a low defect value on the site. SOLUTION: This gas shield arc welding method of rails 10 and 12 which are separated from each other and form a transverse direction spacing therebetween, is equipped with a step that a long steel barrier plate P is arranged in the space in bottoms 42, 42a of the separated rails, and a step that the space on the barrier plate is filled with the mold steel from the proceeding filler metal electrode by a gas shield electric arc welding treatment, which starts with an arc C between an electrode 192 and the barrier plate. A route path is installed using a spray arc welding treatment, and second layers are formed at one portion with a pulse arc welding treatment and at the other portion with a spray welding treatment. Then, the residual parts of a base space, space between webs and space between heads are continuously and intermittently filled with welding beads using a pulse arc treatment. |
