US 12,257,645 B2
Turbocharger turbine assembly having post attachment via a tailed laser beam weld
Petr Balon, Brno (CZ); Lucie Kovarova, Brno (CZ); Antonin Forbelsky, Brno (CZ); and Philippe Renaud, Brno (CZ)
Assigned to GARRETT TRANSPORTATION I INC, Torrance, CA (US)
Filed by Garrett Transportation I Inc., Torrance, CA (US)
Filed on Mar. 31, 2023, as Appl. No. 18/129,607.
Prior Publication US 2024/0326162 A1, Oct. 3, 2024
Int. Cl. B23K 26/06 (2014.01); B23K 26/21 (2014.01); B23K 26/244 (2014.01); B23K 26/28 (2014.01); B23K 26/282 (2014.01); B23K 26/30 (2014.01); B23K 26/302 (2014.01); F04D 17/10 (2006.01); F04D 29/22 (2006.01); F04D 29/42 (2006.01); B23K 101/00 (2006.01)
CPC B23K 26/0626 (2013.01) [B23K 26/21 (2015.10); F04D 17/10 (2013.01); F04D 29/22 (2013.01); F04D 29/4206 (2013.01); B23K 26/244 (2015.10); B23K 26/28 (2013.01); B23K 26/282 (2015.10); B23K 26/30 (2013.01); B23K 26/302 (2015.10); B23K 2101/001 (2018.08)] 9 Claims
OG exemplary drawing
 
1. A method comprising:
providing a plate component of a turbine housing vane cartridge, wherein the plate component comprises spacer post openings;
positioning spacer posts in the spacer post openings;
laser beam welding the spacer posts to the plate component using a laser beam to form laser beam welds, wherein each of the laser beam welds comprises a power ramp-up area, an intermediate area and a power ramp-down area, wherein the ramp-down area curves away from the ramp-up area to reduce weld defects; and
wherein, for each of the laser beam welds, the laser beam welding comprises ramping up power of the laser beam over an arc greater than 2 degrees and less than 25 degrees to form the power ramp-up area.