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7481 |
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Wednesday, May 04, 2022, Hall G2 2:20 PM Precision Melt Engineering |
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Potential use of plasma sprayed heating coatings in die casting and injection molding |
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Shrujal Gor* / RWTH Aachen University, Germany A. Schacht / RWTH Aachen University, Germany H. Heinemann/ RWTH Aachen University, Germany T. Hohlweck/ RWTH Aachen University, Germany N. Wolff/ RWTH Aachen University, Germany A. Bührig-Polaczek/ RWTH Aachen University, Germany K. Bobzin/ RWTH Aachen University, Germany K. Hopmann/ RWTH Aachen University, Germany |
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In metal die casting as well as plastic injection molding, controlling the heat balance during the solidification process can lead to fewer defects and a better component quality. An appropriate cooling channel design within the die can help control the solidification to a certain extent. But the heat control achievable by cooling channels is limited by the absorbing effect of the mold, and therefore near-cavity energy input is of interest. In this paper, a simulation study is performed demonstrating the use of plasma sprayed ceramic coating as a heating coating at the inner walls of the mold. The goal is to apply heat faster and more locally during the solidification process in metal die casting as well as in plastic injection molding. The heat generation of these ceramic coatings are modeled using experimentally measured values and the effects of this approach on defects such as distortion and hot tearing is discussed. |