Manufacturing method for welded components

Abstract

To prevent the influence of thermal distortion of a welded member formed by welding at least three components.SOLUTION: A manufacturing method for a welded member includes welding a first component and a second component so as to form a first welded portion extending in a circumferential direction; and welding the second component and a third component so as to form a second welded portion extending in the circumferential direction. A position that is in a range from a welding start point of the first welded portion to substantially the center of the first welded portion in the circumferential direction and that serves as the center of deformation occurring in the first welded portion is defined as a first deformation point. A position that is in a range from a welding start point of the second welded portion to substantially the center of the second welded portion in the circumferential direction and that serves as the center of deformation occurring in the second welded portion is defined as a second deformation point. The second deformation point is disposed at least 90° apart from the first deformation point in the circumferential direction.SELECTED DRAWING: Figure 1

Claims

1. A method for manufacturing a welded member in which a first part, a second part, and a third part are welded together, The first part and the second part are welded together such that a first weld is formed that extends in the circumferential direction about the axis of the welded member, which extends in the direction in which the first part, the second part, and the third part are aligned. The second part and the third part are welded together such that the second weld portion extending in the circumferential direction is formed. Equipped with, The first weld and the second weld extend from the welding start point to the welding end point, The first deformation point is defined as the position located in the range from the welding start point of the first weld to approximately the center of the circumferential direction of the first weld, and which is the center of the deformation occurring in the first weld. The second deformation point is defined as the position located in the range from the welding start point of the second weld to approximately the center of the circumferential direction of the second weld, and which is the center of the deformation occurring in the second weld. A method for manufacturing a welded member, wherein the second deformation point is positioned at least 90° away from the first deformation point in the circumferential direction.

2. A method for manufacturing a welded member according to claim 1, A method for manufacturing a welded member, wherein the circumferential length of the first weld and the circumferential length of the second weld are substantially the same.

3. A method for manufacturing a welded member according to claim 1, A method for manufacturing a welded member, wherein the first welded portion and the second welded portion are formed by full-circumferential welding.

4. A method for manufacturing a welded member according to claim 3, The first deformation point is the welding start point and welding end point of the first weld, A method for manufacturing a welded member, wherein the second deformation point is the welding start point and welding end point of the second welded portion.

5. A method for manufacturing a welded member according to any one of claims 1 to 4, The welded member in question is an in-vehicle component mounted on a vehicle, and the method for manufacturing a welded member.

6. A method for manufacturing a welded member according to any one of claims 1 to 4, The first welded portion is formed by welding along a first circumferential direction centered on the axis, A method for manufacturing a welded member, wherein the second welded portion is formed by welding along a second circumferential direction opposite to the first circumferential direction, with respect to the axis.

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