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| Abstract No.: |
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Scheduled at:
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Tuesday, June 03, 2008, Room 05 9:50 AM
Arc and Laser Spraying
Ongoing developments in the field of arc spraying including possibilities for modeling this widely known surface coating technology
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| Title: |
Modeling of oxygen intake by particles at arc spraying
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| Authors: |
Yury Korobov* / Ural State Technical University, Russia
Vladislav Boronenkov / Ural State Technical University, Russia
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| Abstract: |
A scheme of an oxygen intake by particles at Arc Spraying is offered. Both external and internal diffusion processes are taken into account. The oxygen intake was separately examined at arc-burning zone and spraying distance. At first the oxygen is dissolved in liquid metal drop up to a limit of saturation. Then slag formation begins accompanied by metal – slag interaction. Modeling of these processes was performed on a base of oxygen input/output mass balance. It was completed by computation of oxygen diffusion flows into gas and metal through interface surface. Mutual influence of alloying elements was also taken into account at slag formation on particle surface. The modeling results are represented in case of arc sprayed steel (1.1 C, 1.9 Mn, 0.8 Si). Propane - air mixture was used as a transporting gas. Good similarity with experiment data was achieved. As shown by calculations, basic share of oxygen intake occurs in the arc-burning zone. The investigation results were used in core wire developing and gun designing as well.
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