Laser precision cladding is a practical technique employed to generate dense and failure-free three-dimensional structures of various metal alloys with high hardness and high wear resistance. Based on 3D CAD data sets the material is applied under NC control in the form of a large number of fine individual tracks until finally closely approaching the desired contour. As a result either functional metallic samples of tools can be produced or else components or contour conforming coatings can be applied for surface protection or repair. A digitizing and programming workstation can scan the actual surface structure of the worn out part and adjust the working regime and control of the entire laser equipment. Technical Parameters: Laser - affordable CO2 or Nd:YAG laser with 1 kW power are generally sufficient; Welding additions - Commercially available steel Co Ni base powders as well as hard material powders (WC Cr3C2 VC); Accuracy: - Minimum wall thickness about 0 5 mm form deviation max ± 0 1 mm surface roughness (material and geometry dependent) Rz = 20 - 200 m; Productivity - Build-up rate (material and geometry dependent) 15 - 75 cm3 h-1 with a 1 kW CO2 laser
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