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AssigneeShanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
InventorsShanglu Yang, Yanjun Wang, Wu Tao
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A resistance spot welding electrode cap contains a groove at the center of the welding contact interface. During welding, because of the groove, the area of contact between the electrode cap and a metal workpiece to be soldered is reduced. In the initial stage, the overall heat generation is concentrated on the outer ring of the weld point and heat dissipation becomes slower, helping a weld nugget to form from the outside to the inside. Due to the presence of the groove, the metal workpiece expands toward the groove at the center of the electrode, thereby increasing the size of the weld nugget and reducing splash and deformation. In comparison with conventional electrode caps, the welding current required to form weld points of the same size is lower, saving on electricity costs, and weld points obtained using the same current have higher strength and stability with fewer welding defects.
An electrode cap for resistance spot welding, which comprises:
An electrode cap for resistance spot welding, which comprises:
Dependencies are inferred from the claim text.