Laser Brazing with Beam Scanning: Experimental and Simulative Analysis

The influence of the ratio between the wire and process velocities on the wetting process during laser brazing

“…They assume that the formation of constrictions depends on effects that are connected to the process velocity. This stepwise progression of the wetting front was also reported by Reimann, who found a wetting frequency of 39 Hz [12], and by Heitmanek et al, who determined a frequency of 42 Hz [13]. Further evaluation of the formation of constrictions was carried out by Heuberger et al [14], who detected the constriction formation in a constant brazing process using high-speed recordings from the top view.…”

Advances in macro-scale laser processing

“…In that case the heat conduction into aluminum becomes dominant [61]. Scanning in feed direction was used to enhance wetting when brazing zinc coated steel using copper based filler wire for body in white-production [84]. The experiments showed a more stable brazing process with scanning, which resulted in improved appearance of the seam.…”

Numerical Simulation and Parameters Optimization of Laser Brazing of Galvanized Steel

“…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.…”

“…Successful applications are the divided tailgate or the zero-gap joint, which represents the joint between the side panel and the roof-top of the body-inwhite. 1) Currently, this technology is extensively used within the Volkswagen group. Other car manufacturers as General Motors Europe, Ford, BMW have launched in production their first mass production application on vehicles.…”