Laser welding procedure for coated steel sheets.

摘要

THE OBJECTIVE invention is a method for joining two sheets (10,12) STEEL, of which at least one sample a coating with a melting point REDUCED, particularly a zinc coating. TO GET A degassing zone FOR zinc vapor it generated PROPOSED IN ACCORDANCE WITH THE INVENTION DISPOSITION OF PLATES BEFORE WELDING IN THE AREA OF SEWING an angle ({AL}) ACUTE AS BORDERS CONTACT Consecutively CONFIGURE AND WELDING sEAM sEAM AS (26) THROAT. ALSO it PROPOSED IN ACCORDANCE WITH invention, chamfering the plate part, that their front sides are welded together, so that CANTEEN BY TWO cutting jaws movable against each other in a scissor bite, where the cutting edges SHOWN AT LEAST A break in the cutting jaws, so that are set TEETH ALONG THE CUTTING EDGE coated sheet. These teeth (19) is arranged so, configured channels (22) outgassing which extend transversely to the direction (24) WELD, promoting EVACUATION OF STEAM ZINC GENERATED IN THE AREA OF ANGULO ( {TO}) ACUTE. FINALLY HAS BEEN PROVIDED IN ACCORDANCE WITH invention are rounded edges (28) FREE TOP 1 or 10 by a second LASER BEAM, where 34 configures a second seam welds. WITH IT IS ENCOURAGES REGULAR lacquer application.