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US 5,399,834 AGranted
Method and device for butt welding metal sheets by means of a laser beam
AssigneeSollac
InventorJerome Guth
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AssigneeSollac
InventorJerome Guth
Estimating the term…
The subject of the present invention is a method for butt welding metal sheets (1, 2) by means of a laser beam, characterized in that a lateral pressure F directed towards the joint plane (3) of the metal sheets (1, 2) is exerted on the metal sheets (1, 2) to be welded in order that the contact pressure between the said metal sheets, at any point in the region of the joint plane (3), lies between 0.05 times the elastic limit of the metal sheet (1 or 2) having the lower elastic limit and the buckling pressure of the metal sheet (1 or 2) having the minimal buckling pressure and a welded seam is produced in the region of the joint plane (3) by local melting of the said metal sheets (1, 2) by means of the laser beam. The subject of the invention is also a welding device for implementing this method.
Method for butt welding metal sheets (1, 2) by means of a laser beam, characterised in that a lateral pressure F directed towards the joint plane (3) of the metal sheets (1, 2) is exerted on the metal sheets (1, 2) to be welded in order that the contact pressure P between the said metal sheets, at any point in the region of the joint plane (3), lies between 0.05 times the elastic limit R.sub.e of the metal sheet (1 or 2) having the lower elastic limit and the buckling pressure P.sub.f of the metal sheet (1 or 2) having the minimal buckling pressure and a welded seam is produced in the region of the joint plane (3) by local melting of the said metal sheets (1, 2) by means of the laser beam.
Device for butt welding metal sheets (1, 2) by means of a laser beam characterized in that it includes means (18, 19, 20, 21) for applying lateral pressure to the metal sheets (1, 2), this pressure being directed towards the joint plane (3) of the said metal sheets to be welded such that a contact pressure between the metal sheets at any point in the regions of the point plane is in a range defined by a lower limit equal to 0.05 times the elastic limit R.sub.e of the metal sheets and an upper limit equal to the minimum buckling pressure P.sub.f of the metal sheets, wherein a welded seam is produced in the region of the joint plane by local melting of the metal sheets using said laser beam.
Dependencies are inferred from the claim text.