| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for overlaying a steel tube capable of unifying the overlaying thickness, suppressing the cost of a material necessary for the overlaying, and reducing the labor during the overlaying. SOLUTION: A steel tube 11 of a furnace wall 10 is overlaid in the circumferential direction by a welding equipment in which a welding torch 40 is moved along a substantially circular shaped rail 30. The welding torch 40 is moved along an outer circumferential surface of the steel tube 11 while the arc length from the welding torch 40, in other words, the space between the welding torch 40 and the steel tube 11 is kept constant. The overlaying thickness is unified in the circumferential direction of the steel tube 11 thereby, the overlaying thickness is reduced on the whole, and the use of an overlaying material is suppressed to reduce cost. COPYRIGHT: (C)2007,JPO&INPIT |
