Because of their high immediate tensile strength and significant fatigue strength, DOCOL steels (belonging to advanced high-strength steels (AHSS)) are increasingly commonly used in the fabrication of mobile platforms. The welding of the above-named steels is difficult due to the fact that the dominant structure is martensitic. As a result, the welding of such steels requires both experience and high qualifications. The tests discussed in the article aimed to identify appropriate parameters as regards the welding of steel DOCOL 1400M as well as to determine the effect of such process parameters as welding rate, the method of bevelling and the application of preheating on the quality of joints obtained in the process.

doi: 10.17729/ebis.2022.4/2