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Method for the laser welding of a composite material to a component, and laser-weldable composite material for such a method
Method for the laser welding of a composite material to a component, and laser-weldable composite material for such a method
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机译:将复合材料激光焊接到部件上的方法,以及用于这种方法的可激光焊接的复合材料
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摘要
The invention relates to a method for the laser welding of a composite material (V) to a component (11) in particular for the production of a solar collector element (E), wherein the composite material (V) comprises a strip-shaped substrate (1) composed of a metal having high reflectivity to laser radiation, said substrate having a first side (A) and a second side (B), wherein a dielectric coating (7) is situated at least on the first side (A), and wherein, in order to produce a weld seam, a laser beam (L) is projected at an acute orientation angle (μ) at least onto the first side (A) of the substrate (1) provided with the dielectric coating (7). In order to improve the energy efficiency of the laser radiation used, it is proposed that the dielectric coating (7) has a thickness (DB) in the range of 140 nm to 210 nm and the laser beam (L) is radiated in at an orientation angle (μ), in particular in focused fashion, in such a way that the radiated-in energy of the laser beam (L) is absorbed to the extent of at least 15 percent.
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