1. Laser Welding of Coated Press-hardened Steel 22MnB5
- Author
-
Jukka Siltanen, Ari Minkkinen, and Sanna Järn
- Subjects
Heat-affected zone ,Materials science ,Metallurgy ,Shielding gas ,Laser beam welding ,02 engineering and technology ,Electrogas welding ,Welding ,Electric resistance welding ,020501 mining & metallurgy ,law.invention ,Explosion welding ,0205 materials engineering ,law ,Arc welding - Abstract
The press-hardening process is widely used for steels that are used in the automotive industry. Using ultra-high-strength steels enables car manufacturers to build lighter, stronger, and safer vehicles at a reduced cost and generating lower CO 2 emissions. In the study, laser welding properties of the coated hot stamped steel 22BMn5 were studied. A constant 900 °C temperature was used to heat the steel plates, and two different furnace times were used in the press-hardening, being 300 and 740 seconds. Some of the plates were shot blasted to see the influence of the partly removed oxide layer on the laser welding and quality. The welding set-up, welding, and testing of the weld specimens complied with the automotive testing code SEP 1220.
- Published
- 2017