Laser Brazing Aluminum To Steel

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.

Laser brazing aluminum to steel. The process is divided into welding of the. You can also braze the steel with aluminum. Hot wire laser brazing was proposed for attaining a lap fillet dissimilar joint of galvanized gi steel sheet a5052 sheet. 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.

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. 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. Laser powers of tandem beam and offset distance of preheating beam from the root to the steel base metal were varied. It has advantages in welding dissimilar metals that have great differences in melting point li and wu 2010.

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. 12 a which contained three aspects. Second weld the aluminum to the dipped steel. Have discussed the importance of global geometry of fillet welds in laser brazing applied to steel to aluminium joints mathieu et al 2007.

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 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. First dip the steel into melted aluminum to coat it. The process parameters of lb have significant effects on the bead profile and hence the quality of joint.

Once the metals are cooled the materials will have been successfully bonded to one another. Under suitable welding parameters a sound welding. The authors concluded that the geometry of the weld concavity and wetting.