Method and apparatus for magnetic impulse welding of sheets
AssigneeGM Global Technology Operations LLC
InventorSven Ove Olsson
Life of this patent
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Abstract
A first sheet, includes, but is not limited to at least one attachment region inclined at an angle to a sheet plane. The first sheet is arranged on a second sheet so that the attachment region of the first sheet is spaced at a distance from the second sheet. A magnetic field pulse is applied so as to cause a force on the attachment region in directions generally perpendicular to the first sheet plane and the second sheet plane so that the attachment region of the first sheet is driven against the second sheet with sufficient force to produce a cold-welded joint between the attachment region of the first sheet and the second sheet.
Claims26
A method for magnetic impulse welding of a first metallic sheet and a second metallic sheets, comprising the steps of:
- welding thee first metallic sheet to the second metallic, each of the first metallic sheet and the second metallic sheet having a sheet plane and the first metallic sheet comprising an attachment region inclined at an angle to the sheet plane;
- arranging the first metallic sheet on the second metallic sheet so that the attachment region of the first metallic sheet is spaced at a distance from the second metallic sheet;
- applying a magnetic field pulse so as to cause a force on the attachment region in a directions generally perpendicular to the sheet plane of the first metallic sheet and the second metallic sheet so that the attachment region of the first metallic sheet is driven against the second metallic sheet with a force to produce a cold-welded joint between the attachment region of the first metallic sheet and the second metallic sheet.
(canceled)
(canceled)
An apparatus for producing a cold-welded joint between a first metallic sheet and a second metallic sheet, comprising:
- a support table having a support surface for supporting portions of the first metallic sheet and the second metallic sheet positioned on the support table, the first metallic sheet being positioned on the second metallic sheet during the production of the cold-welded joint;
- a generator for generating a magnetic field pulse positioned adjacent the support surface of the support table and being adapted to produce a magnetic field in a direction generally parallel to the support surface of the support table and adapted to cause a force in directions generally perpendicular to the support surface to drive an attachment region of the first metallic sheet which is spaced at a distance from the second metallic sheet against the second metallic sheet so as to produce the cold-weld joint between the attachment region of the first metallic sheet and the second metallic sheet.
The apparatus according to claim, wherein the magnetic field source is an electromagnet.
Dependencies are inferred from the claim text.