METHOD AND APPARATUS FOR BUTT WELDING STEEL SHEET WITH LASER BEAM WELDING METHOD

摘要

PURPOSE: To make a clean seam preparation by separating the metal strip sheets to be brought into contact with each other on their end side and executing welding with the same laser. CONSTITUTION: At the time of butting the copper strip sheets against each other and welding the same by a laser beam welding method, the edge strip on the end side of the strip sheet 3 trailing to the leading strip sheet 38 is disconnected with a laser beam 45. The strip sheet ends are straightened and prepared for the purpose of welding preparation by the same method and process. As a result, the need for machining of the leading coil and the trailing coil is eliminate and the clean seam preparation at the strip sheet ends to be welded may be obtd.