VERFAHREN ZUM SCHWEISSEN VON HÄRTENDEN KOHLENSTOFFSTÄHLEN UNTER VERWENDUNG EINES HOCHLEISTUNGSDIODENLASERS

摘要

The invention relates to a method of welding hardening carbon steels using a high-power diode laser. The inventive method essentially comprises the irradiation of the parts to be joined using a laser beam from a high-power diode laser, whereby said beam is duly directed by means of optical fibres, mirrors or even with the use of any type of lens. In this way, the interaction areas of the steel parts are fused and a relative movement is produced between the laser beam and the parts to be welded, such that said beam irradiates all of the contact area of the parts. The inventive method can be used to form autogenous welds without pre-heating or post-welding treatments. The welds thus produced are reliable and free from inner or outer cracks, pores or any other defects associated with fusion welding performed using standard methods, such as cuts, inclusion of slag, splashes, etc.