Study Of Laser Welding Of Copper Sheets

The total energy consumption required for welding copper has been mathematically reduced by 84 percent compared to infrared lasers and by as much as 92 percent for gold.

Study of laser welding of copper sheets.

Abstract continuous yb yag laser keyhole welding of the pure copper plate to steel 316l sheet is performed for different laser parameters. This cw prototype system enables first basic process studies on continuous welding of copper with green laser radiation as well as a direct comparison to a similar infrared laser system. A prototype of a pulsed green laser with a pulse power of 4000 w was used to weld 0 8 mm thick pure copper to 0 8 mm thick sheets of a copper alloy. The laser generated welding keyhole and weld melted zone are observed by a high speed camera.

In both cases the influence of several parameters such as laser power spot dimensions and. It was proved that high power diode laser hpdl autogenous weldedlap joints provide mechanical properties on the level of parent material originality value. Copper is highly reflective of laser light especially infrared lasers. Purpose of this research is to study laser autogeneous welding process of short seam beads and fillet welds of lap joints of oxygen free copper sheets 1 0 mm thick.

A spatter detection was developed to evaluate the process stability during the welding process. The challenges of welding copper copper is used in a wide range of applications because it s malleable and a great conductor of both electricity and heat. The image is treated by matlab and simple code is built to calculate the keyhole and melted zone area. Investigations on energy coupling the threshold for deep penetration welding and achievable weld shapes were performed for both wavelengths.

On the bases of results of quality assessment it was proved that high power diode laser hpdl welded lap joints of copper sheet provide mechanical properties on the level of parent material. When welding foils considerable results have already been achieved in butt and edge welding. On the bases of results of quality assessment it was proved that high power diode laser hpdl welded lap joints of copper sheet provide mechanical properties on the level of parent material. Non overlapping and overlapping spots were considered.

Purpose of this research is to study laser autogeneous welding process of short seam beads and fillet welds of lap joints of oxygen free copper sheets 1 0 mm thick. Different welding strategies e g. The present paper defines process windows for laser welding of thin copper and aluminum sheets in al cu and cu al lap joint configurations exploiting different process strategies and parameters. A single mode continuous wave cw laser source was exploited with both linear and wobbling strategies.

Laser welding copper to aluminum or steel can even be achieved with copper powder and thin copper foils.