The article presents selected results of technological tests involving the welding of high-strength steel (with a guaranteed yield point of 1100 MPa) using a robotic laser beam welding station. The joints made in the tests were subjected to visual, macroscopic and microscopic tests as well as to hardness measurements. The obtained results revealed the presence of martensitic-bainitic structure in the cross section of the welded joint and the presence of a narrow zone characterised by low hardness (softened zone).

doi: 10.17729/ebis.2019.6/3