| 摘要 |
Provided are a welding component, a fuel injection valve with the welding component and a laser welding method. The welding component reduces welding deformation. The welding component is provided with first-welded materials (1) provided with a recessed portion (13), second-welded materials (2) and a welding channel (3). The welding channel (3) enables the first-welded materials (1) to be superposed on the second-welded materials (2). The welding channel forms by means of irradiating laser rays from one side of the first-welded materials (1) and by means of deep-welding-penetrating type laser welding. The width of the surface of the welding channel (3) is W1. The welding-penetrating width of the width of the welding channel (3) which is in an interface between the first-welded materials (1) and the second-welded materials (2) is regarded as W2. The plate thickness of the first to-be-welded materials (2) is t. W1/t which is a ratio of the surface width (W1) to the plate thickness (t) is below a first threshold value. (W1-W2)/t which is a ratio of the difference between the surface width (W1) and the welding-penetrating width (W2) to the plate thickness (t) is below a second threshold value. |
