Resistance Spot Welding Electrode and Use of the Electrode
AssigneeOutokumpu Oyj
InventorsThomas Hündgen, Stefan Lindner
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Abstract
A resistance spot welding electrode for forming dissimilar welded lap joints in crash-relevant structural components of the automotive industry made of high-strength materials. The resistance spot welding electrode includes a cap having, at an end portion of the electrode in contact with materials to be welded together during welding, a non-axially symmetrical contact area in order to form, between the materials being welded, a weld nugget with an essentially similar non-axially symmetrical shape.
Claims17
A resistance spot welding electrode for dissimilar welded lap joints in crash-relevant structural components of the automotive industry made of high-strength materials, wherein the resistance spot welding electrode includes a non-axially symmetrical cap having at an end of the electrode configured during welding to be in contact with materials to be welded together, a non-axially symmetrical contact area in order to achieve a weld nugget between the materials with an essentially similar non-axially symmetrical shape.
A method of welding with a resistance spot welding electrode including:
- positioning a non-axially symmetrical cap having, at an end of the non-axially symmetrical electrode configured to be in contact with materials to be welded together, a non-axially symmetrical contact area;
- and
- engaging the resistance spot welding electrode to weld high strength materials, such as carbon steel or stainless steel with a yield strength greater than 400 MPa, wherein the carbon content is more than 0.15 weight % in the resulting dissimilar weld nugget.
A method of welding with a resistance spot welding electrode including:
- positioning a non-axially symmetrical cap having, at an end of the resistance spot welding electrode configured to be in contact with materials to be welded together, a non-axially symmetrical contact area;
- and
- engaging the resistance spot welding electrode to weld high strength aluminium alloys.
(canceled)
Dependencies are inferred from the claim text.