Laser Brazing Aluminum To Steel

The primary joining mechanism of large spot laser assisted gma brazing fusion welding of al to galvanized steel was identified which could be summarized into two factors.

Laser brazing aluminum to steel.

Laser powers of tandem beam and offset distance of preheating beam from the root to the steel base metal were varied. Our results our results revealed that relatively sound brazing beads with without a few defects were obtained at high brazing speeds of up to 4 0 m min. 12 a which contained three aspects. Under suitable welding parameters a sound welding.

Laser brazing lb provides a promising way to join the galvanized steel in automotive industry for its significant advantages including high speed small heat affected zone and high welding seam quality. Welding brazing is considered to be an effective method to solve the problems existing in steel aluminum dissimilar metals welding such as large differences in physical properties and brittle intermetallic compounds. The process is divided into welding of the. First dip the steel into melted aluminum to coat it.

The first factor was the effective function of laser beam fig. Laser fusion brazing process combining the advantages of fusion welding and brazing is an effective approach to weld aluminum to steel. Different filler wires have been employed in fusion brazing of aluminum to steel in order to enhance the tensile strength. Second weld the aluminum to the dipped steel.

Hot wire laser brazing was proposed for attaining a lap fillet dissimilar joint of galvanized gi steel sheet a5052 sheet. Have discussed the importance of global geometry of fillet welds in laser brazing applied to steel to aluminium joints mathieu et al 2007. The process parameters of lb have significant effects on the bead profile and hence the quality of joint. In this work we present the technology of a laser welding brazing lwb process to join zinc coated steel and aluminium sheets in an overlap geometry.

The authors concluded that the geometry of the weld concavity and wetting. Once the metals are cooled the materials will have been successfully bonded to one another. Tandem beam brazing with the aluminum filler metal ba4047 was conducted in order to develop the fluxless laser brazing technique of aluminum alloy aa6022 to galvanized steels ga and gi steels.