Process for producing a metal tube of copper

Details Process for producing a metal tube of copper Process for producing a metal tube of copper

B - Operations, Transporting

21

C

B21C 37/08 (2006.01) B23K 26/18 (2006.01) B23K 26/26 (2006.01) B23K 26/28 (2006.01) B23K 26/40 (2006.01) B23K 26/42 (2006.01)

Patent

CA 2355442

In a process for producing a metal tube, in which a strip of copper or a copper alloy is continuously pulled from a strip supply and is formed into a slit tube with butted strip edges, and the strip edges are laser welded, and at least the area of the strip edges is mechanically roughened prior to welding. The peak-to-valley height is above R a = 12.5 µm, and wetting with a liquid hydrocarbon is carried out prior to welding.

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