Laser Welding of Coated Press-hardened Steel 22MnB5

Publication date: 2017 Source:Physics Procedia, Volume 89 Author(s): Jukka Siltanen, Ari Minkkinen, Sanna Järn 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 CO2 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 740seconds. 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.

Source: Physics Procedia - September 26, 2017 Category: Physics Source Type: research