Controlling phase formation during aluminium/steel Nd:YAG laser brazing

Numerical Simulation and Parameters Optimization of Laser Brazing of Galvanized Steel

“…So the composite heat source model of Gauss double ellipsoid was chosen to calculate, the improve heat source can simulate the energy distribution well, and the satisfactory shape of the weld pool can be obtained. The energy of the welding heat source was assigned to the two relatively independent heat source models in upper and lower interface, as is shown in formula (2). The sketch of heat source model is shown in Fig.…”

“…Li SHAOWEI, 1,2) Yu ZHISHUI, 1,2) Zhang PEILEI, 1,2) * Li XIAOLIANG, 1,2) Qiu DINGDING 1,2) and Liu XIAOPENG (Received on August 20, 2015; accepted on December 1, 2015) In order to study the heat phenomenon of laser brazing galvanized steel, the experiments of laser brazing were carried out, in which the base metal is galvanized steel sheets and CuSi 3 is used as filler metal. The numerical simulation of temperature field was carried on by the finite element method, and the simulation result was validated through comparative experiment.…”

“…The main parameters for brazing with a static laser beam are the laser power, the filler wire speed and the brazing speed. Rodriguez et al 2) studied laser brazing of steel/aluminum assembly and obtained good brazing seam forming by setting different welding parameters. The wetting frequency of the melt pool front is correlated to the brazing speed.…”