Hybrid butt-lap joint, and method of production
AssigneeHis Majesty the King In Right of Canada, AS Represented By the Minister of Natural Resources
InventorZheng CHEN
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Abstract
Lap joints and butt joints can be used for braze-welding metals together, particularly metal sheet materials. Disclosed herein are hybrid joints that include features of both lap joints and of butt joints, that are suitable for braze-welding together articles and workpieces, particularly sheets, composed of different metals including aluminum and steel. Methods for braze-welding such hybrid joints are also disclosed.
Claims8
A method for producing a hybrid butt-lap joint between a steel workpiece and an aluminum workpiece, each of which comprise two faces and at least one edge surface, and wherein the steel workpiece optionally comprises a zinc surface layer, the method comprising the steps of:
- a) positioning the steel and aluminum workpieces for edge-to-edge contact with one another, thereby to provide a steel/aluminum butt region between an edge of the steel workpiece and an edge of the aluminum workpiece;
- b) positioning a second steel workpiece flush across the steel/aluminum butt region on one side of the steel and aluminum workpieces, so that the second steel workpiece overlaps in contact both with a portion of one face of the steel workpiece and a portion of one face of the aluminum workpiece adjacent the steel/aluminum interface;
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- c) braze welding along the steel/aluminum butt region, on a side of the steel and aluminum workpieces opposite the second steel workpiece;
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- d) optionally welding the steel workpiece to the second steel workpiece.
Dependencies are inferred from the claim text.