CPC B23K 26/244 (2015.10) [B23K 26/0622 (2015.10); B23K 26/0734 (2013.01); B23K 26/0876 (2013.01); B23K 26/32 (2013.01); B23K 2103/10 (2018.08)] | 19 Claims |
1. A method for joining a first blank and a second blank, wherein both the first and the second blanks are made of an aluminum material, the method comprises:
placing the first and second blanks for welding, the second blank being placed on top of the first blank and partially overlapping the first blank;
laser welding, by a laser, the first and second blanks following a welding path wherein,
the welding path combines a movement along a welding direction and oscillating movements substantially transverse to the welding direction, wherein the oscillating movement has a frequency between 50 Hz and 1500 Hz and an amplitude ranging from 0.3 mm and 3.0 mm, and wherein
a laser power is varied along the welding path, wherein the laser power is varied such that a product of the laser power and a speed of the laser divided by a local thickness is substantially constant along the welding path, such that accumulated heat in points along the welding path is substantially constant.
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