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 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. Laser fusion brazing process combining the advantages of fusion welding and brazing is an effective approach to weld aluminum to steel. The process is divided into welding of the. The first factor was the effective function of laser beam fig.

12 a which contained three aspects. Different filler wires have been employed in fusion brazing of aluminum to steel in order to enhance the tensile strength. The authors concluded that the geometry of the weld concavity and wetting. 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.

It has advantages in welding dissimilar metals that have great differences in melting point li and wu 2010. Under suitable welding parameters a sound welding. Laser powers of tandem beam and offset distance of preheating beam from the root to the steel base metal were varied. First dip the steel into melted aluminum to coat it.

Once the metals are cooled the materials will have been successfully bonded to one another. Hot wire laser brazing was proposed for attaining a lap fillet dissimilar joint of galvanized gi steel sheet a5052 sheet. Using laser beam as main heat source and trailing arc as an assisted role aluminum alloy was joined to galvanized steel in a butt configuration. 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.

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. The process parameters of lb have significant effects on the bead profile and hence the quality of joint. Have discussed the importance of global geometry of fillet welds in laser brazing applied to steel to aluminium joints mathieu et al 2007.