| 摘要 |
PROBLEM TO BE SOLVED: To secure effective welding length by making the butting part of an outer cylinder coincident to the winding end part of a honeycomb part when the depth of a recessed part exceeds a prescribed value based on the depth of the recessed part of the winding end part as a reference and intentionally shifting the winding end part when the depth of the recessed part is within the prescribed value to limit a welding place to only one place. SOLUTION: In the production of a metal made catalyst carrier 20, the outer cylinder 25 formed by welding the butting part 26 from the outside and the honeycomb part 23 formed by laminating a corrugated plate 22 on a flat plat 21 and winding into a roll like state are prepared, the depth of the recessed part in the winding end part 28 of the honeycomb part 23 is measured and in the case that the depth of the recessed part exceeds the prescribed value, the honeycomb part 23 is inserted in the outer cylinder 25 in a state of making the winding end part 28 coincident to the butting part 26 and is fillet-welded to the outer cylinder 25. On the other hand, in the case that the depth of the recessed part is within the prescribed value, the honeycomb part 23 is inserted to the outer cylinder 25 in a state of shifting the winding end part 28 from the butting part 26 and is fillet-welded to the outer cylinder 25. As a result, the length of the unwelded part is shortened to secure the effective welding length. |
