Laser:powder:substrate interactions in laser cladding and casting

Kaplan, Alexander; Powell, John; Gedda, Hans

doi:10.1504/ijmmp.2010.035937

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Staufer (2010) researched laser-arc hybrid welding in the automotive industry and claimed that the GMAW process was affected by the laser beam. Kaplan et al (2010) studied the laser cladding and laser casting. Their results indicated that a transition from cladding to casting and vice versa could be achieved by proper control of the process parameters, both for preplaced and blown powder.…”

Section: Introductionmentioning

confidence: 99%

Effects of welding velocity on the impact behavior of droplets in gas metal arc welding

Feng

Chen

et al. 2012

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

Effects of welding velocity on the impact behavior of droplets in gas metal arc welding

Feng

Chen

et al. 2012

Journal of Materials Processing Technology

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“…Under the laser irradiation, metal powder is melted to fabricate high strength metal parts. The interaction of laser and metal power materials is one of key scientific problems in laser fabricating [3][4][5]. The temperature of metal powder stream in the laser irradiation is very difficult because of its spray, high brightness and Unsteady-state.…”

Section: Introductionmentioning

confidence: 99%

Measurement on Temperature Distribution of Metal Powder Stream in Laser Fabricating

Lei

Wang

2011

AMM

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In order to study temperature distribution of metal powder stream in laser fabricating, its thermal radiation in visible region was detected by CCD. Based on Planck’s radiation law, the relation between molten powder temperature and its visible thermal radiation could be set up. The thermal radiation image signal of powder stream was transformed to digital signal which was used to analyzing its temperature distribution. It was shown that crosswise dimension of molten powder was about 2.5mm in diameter at the distance of 5mm from power nozzle. The powder out from powder nozzle was heated rapidly by laser. Temperature of powder in central axis regions was the highest which was nearly 2000K at the power of 1100w. The temperature gradient of powder at the edge of laser stream was greatly. The measurement results could be used to optimize the design of powder nozzle and processing parameters of laser fabricating.

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