Laser Welding Copper
Laser welding of copper is revolutionized by the development of a new blue diode laser. The blue laser beam enables high-quality processing of copper and other non-ferrous metals in industrial processes.
Copper Laser Welding – The Process
With the blue laser, controlled heat conduction welding of copper and other non-ferrous metals with low material thickness is possible for the first time. Material thicknesses of less than one millimeter are no longer a problem. Whereas thin foils were previously cut rather than joined with an infrared laser, the blue laser can now be used to process the material in a targeted and controlled manner. With the help of the blue laser beam, the desired material is melted along the joints. The liquefied materials flow into each other and form the weld seam when they cool down. This process results in particularly smooth seams that are of outstanding quality and therefore highly stable. Basically, the process is the same as with an infrared laser – apart from the wavelength used.
Laser Welding of Copper Pins with Blue Diode Laser
Laser welding of two copper pins (approx. 0.5x1.5mm²) with 450nm wavelength and 100ms pulse time for electrical applications.
Heat conduction welding with the blue diode laser LDMblue leads to a very stable, homogeneous molten pool without evaporation. The dominant surface tension of the liquid copper bridges gaps between the pins, resulting in a homogeneous connection.
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Bead on plate weld on a pure copper sheet (0.5mm thickness) with the Laserline LDMblue500-60
Heat conduction welding with a wavelength of 450 nm and a focus diameter of 600 µm ensures a highly stable molten pool without spatters in the welding process.
Copper sheet: 0,5mm
Focus diameter: Ø0.6mm
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