Journal ArticleDOI
Development of a new laser cladding process for manufacturing cutting and stamping dies
Y. P Hu,C. W Chen,K Mukherjee +2 more
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In this paper, an integrated powder delivery system is described, which can provide a highly stable, continuous, and accurate powder feeding rate, and deliver the alloy powders coaxially into the laser-generated molten pool to form high-quality cladding tracks.Abstract:
An integrated powder delivery system is described, which can provide a highly stable, continuous, and accurate powder feeding rate, and deliver the alloy powders coaxially into the laser-generated molten pool to form high-quality cladding tracks. By combining such a powder feeding system and computer-aided design/computer aided machining system, complex, three-dimensional geometric patterns were deposited on AISI 1045 steel plate or roller via laser cladding for manufacturing cutting and stamping dies, and laminated metal matrix composites. The microstructures of cladding layers, interface, and heat-affected zone were characterized, and the microhardness of a transverse section of single cladding tracks was also measured. © 1998 Chapman & Hallread more
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Analysis and prediction of single laser tracks geometrical characteristics in coaxial laser cladding process
TL;DR: In this paper, the authors present analytical relationships between the laser tracks geometrical characteristics (width, height, area, penetration depth) and the processing parameters (laser power P, scanning speed V and powder mass flow Qm).
Journal ArticleDOI
Laser powder deposition
Lino Costa,Rui Vilar +1 more
TL;DR: In this paper, the state-of-the-art of laser powder deposition (LPD) is reviewed and the main issues related to LPD are revisited, including the main R&D efforts and the major issues of LPD.
Journal ArticleDOI
Experimental characterization of laser cladding of CPM 9V on H13 tool steel for die repair applications
TL;DR: In this paper, a CPM 9V steel powder has been deposited on H13 tool steel plate for repairing the die surface damage using a CW CO2 laser in conjunction with powder injection system.
Journal ArticleDOI
Effect of laser parameters on microstructure and hardness of laser clad and tempered AISI H13 tool steel
TL;DR: In this article, the effect of post-cladding heat treatment (both by laser assisted surface heating and conventional tempering at 550°C) on the microstructure, phase aggregate, crystallite size, micro-strain and residual stress was carried out.
Journal ArticleDOI
Laser Cladding of Vanadium-Carbide Tool Steels for Die Repair
TL;DR: In this paper, a study of the laser cladding of powder metallurgical tool steels has been carried out using a Nd:YAG laser for repairing purposes using optical and scanning electron microscopes.
References
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Journal ArticleDOI
Laser cladding using the powder blowing technique
TL;DR: In this article, a series of laser-clad samples have been produced using a 5 kW CO 2 laser and a powder blowing technique, with the correct conditions, a fused bead of alloy up to 5 mm wide and 1 mm thick can be formed on a surface.
Journal ArticleDOI
Laser deposition of carbide-reinforced coatings
TL;DR: In this paper, the results of laser cladding experimental results using families of carbides (tungsten and titanium) mixed with metallic alloys are reported as substrates, low alloy construction steel (AISI 4140) (austenitic stainless steel) samples have been utilized, depending on the particular carbide reinforcement application.
Journal ArticleDOI
Laser cladding of high-temperature coatings
J. de Damborenea,A.J. Vázquez +1 more
TL;DR: In this article, the processing and microstructural characteristics of nickel-based superalloys obtained by high-power laser surface cladding were studied, where the processing variables were laser power, scan velocity and the composition of the feeder powder.
Journal ArticleDOI
Non-equilibrium synthesis of Fe-Cr-C-W alloy by laser cladding
J. Choi,Jyoti Mazumder +1 more
TL;DR: In this article, different complex types of carbide were observed in different laser cladding and different laser process parameters such as power density or specific energy as well as preheating temperature affected the characteristics of the carbide precipitates in the matrix.
Computer methods and experimental measurements for surface treatment effects
TL;DR: In this paper, the authors evaluated surface treatment of Ti-6A1-4V alloy specimens and defined the batchsize and composition of processes in surface treatment, and provided a numerical solution for nonlinear heat flow problem using boundary integral method.