Studies of Rapid Tooling Spraying Technology Using Low Melting Metal Alloy

Tsuo Fei Mao; Feng Che Tsai; Shie Chen Yang; Dong Yang Yu; Jia Xian Wang

doi:10.4028/www.scientific.net/AMR.421.630

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Studies of Rapid Tooling Spraying Technology Using Low Melting Metal Alloy

Abstract:

To manufacture rapid metal tools, an innovative method based on rapid prototyping and high pressure spraying technologies is proposed in this study. The Sn-Bi metal alloy with low melting point and small thermal shrink was used as the spraying materials. Applying an electric heated device and high pressure boost pump, the melting Sn-Bi Alloy went through a small spray nozzle and atomized into semi-melting minute particles. The atomized particles are then deposited and integrated on the surface of intermediate silicone rubber mold, which is made from the rapid prototyping (RP) system and are successfully used to manufacture rapid wax injection mould. Using the thermal spraying system to manufacture rapid metal mold, the surface quality and the dimensional accuracy of the spray mold is excellent and the fabricated cycle time is short.