Manufacturing method for plastic forming molds

Details Manufacturing method for plastic forming molds Manufacturing method for plastic forming molds

C - Chemistry, Metallurgy

23

C

C23C 16/16 (2006.01) C23C 16/01 (2006.01)

Patent

CA 2156996

A manufacturing method for forming plastic dies in which a metal layer is formed on a mandrel surface at a rapid rate of deposition and with few modifications. The mandrel surface is heated to the metal carbonyl's deposition temperature and by introducing a metal carbonyl vapor on the mandrel surface a metallic layer is formed. The deposition temperature of the metal from the metal carbonyl vapor is remarkably faster than temperatures from electro-casting. Compared to electro-casting with the same Ni, this is 10 times faster and the productivity is remarkably higher. Also, the metal's deposition from metal carbonyl vapor is done evenly regardless of whether the mandrel shape is irregular. Furthermore, separation is easy when the surface of the mandrel comprised of alloy Al or Al forms a heat resistant layer and when the heat resistant resin layer is burnt off after the metal carbonyl's metallic layer is formed.

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