Direct laser deposition of Cu alloy on forming tool surfaces—Process window and mechanical properties

Schmidt, Michael; Kolleck, Ralf; Grimm, Alexander; Veit, Robert; Bartkowiak, Konrad

doi:10.1016/j.cirp.2010.03.071

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…Aluminum bronze can be applied by laser cladding as a coating material for cold forming tools to reduce friction and particularly adhesive wear in forming of high alloy stainless steel like 1.4301 [9]. Today, adequate lubrication is necessary in metal forming for industrial mass production.…”

Section: Introductionmentioning

confidence: 99%

Investigations on dry sliding of laser cladded aluminum bronze

et al. 2016

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-The aim of this study was to investigate the tribological behaviour of laser cladded aluminum bronze tool surfaces for dry metal forming. In a first part of this work a process window for cladding aluminum bronze on steel substrate was investigated to ensure a low dilution. Therefore, the cladding speed, the powder feed rate, the laser power and the distance between the process head and the substrate were varied. The target of the second part was to investigate the influence of different process parameters on the tribological behaviour of the cladded tracks. The laser claddings were carried out on both aluminum bronze and cold work tool steel as substrate materials. Two different particle sizes of the cladding powder material were used. The cladding speed was varied and a post-processing laser remelting treatment was applied. It is shown that the tribological behaviour of the surface in a dry oscillating ball-on-plate test is highly dependent on the substrate material. In the third part a deep drawing tool was additively manufactured by direct laser deposition. Furthermore, the tool was applied to form circular cups with and without lubrication.

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Section: Introductionmentioning

confidence: 99%

Investigations on dry sliding of laser cladded aluminum bronze

et al. 2016

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“…A proven tool material to form high alloy austenitic steel is aluminum bronze. Relevant areas of the deep drawing tool surface can be modified using aluminum bronze coatings by laser cladding [7]. Laser cladding is a manufacturing technique for modifying surfaces, for repairing applications and for additive manufacturing processes for example of forming tools [8].…”

Section: Introductionmentioning

confidence: 99%

Dry metal forming of high alloy steel using laser generated aluminum bronze tools

Freiße

Köhler

Seefeld

et al. 2015

MATEC Web of Conferences

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Abstract. Regarding the optimization of forming technology in economic and environmental aspects, avoiding lubricants is an approach to realize the vision of a new green technology. The resulting direct contact between the tool and the sheet in non-lubricated deep drawing causes higher stress and depends mainly on the material combination. The tribological system in dry sliding has to be assessed by means on the one hand of the resulting friction coefficient and on the other hand of the wear of the tool and sheet material. The potential to generate tailored tribological systems for dry metal forming could be shown within the investigations by using different material combinations and by applying different laser cladding process parameters. Furthermore, the feasibility of additive manufacturing of a deep drawing tool was demonstrated. The tool was successfully applied to form circular cups in a dry metal forming process.

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“…Chryssolouris et al (2002) have worked with an off-axis nozzle and analyzed the clad geometry results through varying the powder feed rate, axial motion speed, gas flow and laser beam diameter. Schmidt et al (2010) have also studied the process parameters influences on the clad geometries and micro hardness, however, using a coaxial nozzle.…”

Section: Introductionmentioning

confidence: 99%