| 摘要 |
A joining technique and design for welding hard to weld elements of a disk drive suspension machines or coins the parts to be welded at their weld interface. A small pocket is formed at the weld interface to let evaporated material gases escape during welding and reduce gas bubble trapping in the weld nugget. For laser welding, a pocket is formed in thick parts to control the welded web thickness for fast melting and thorough mixing of top and bottom materials. For resistance spot welding, it may be necessary to form pockets in both materials on the electrode contact side to reduce material thickness. This technique provides a weld interface design that solves joint reliability and dynamic variation problems. This technique can be used to attach aluminum-to-aluminum or other materials that are difficult to weld due to porous welds, and to improve weld quality of both spot and seam welds.
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