Title :
Simulation of laser beam cladding by powder injection
Author :
Lepski, D. ; Eichler, H. ; Scharek, S. ; Fux, V. ; Nowotny, St ; Beyer, E.
Author_Institution :
Fraunhofer-Inst. fur Werkstoff-und Strahltechnik, Dresden, Germany
Abstract :
Summary form only given. Laser beam cladding is successfully applied to the deposition of wear and corrosion protective coatings and the repair of wear damaged parts. Simulating the cladding process on a virtual machine may facilitate the estimation of process windows and save cost in manufacturing. The presented model predicts the results of processing within a few minutes by simulating the powder preheating by the laser beam, the powder resorption in the melt pool, and the heat transfer in the work piece, taking into account the influences of surface tension, gravity forces, and Marangoni flow on bead shape, temperature field, metallurgical structure, and dilution.
Keywords :
antireflection coatings; cladding techniques; convection; corrosion protective coatings; high-speed optical techniques; laser deposition; optical windows; powder technology; surface tension; virtual machines; wear resistant coatings; Marangoni flow; corrosion protective coatings; dilution; gravity forces; heat transfer; laser beam cladding simulation; manufacturing cost; melt pool; metallurgical structure; powder injection; powder preheating; powder resorption; process windows estimation; surface tension; temperature field; virtual machine; wear damaged parts repair; wear deposition; work piece; Coatings; Corrosion; Costs; Laser beams; Laser modes; Manufacturing processes; Powders; Predictive models; Protection; Virtual machining;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313630
