低熔点合金饰品离心铸造中硅橡胶型的制作工艺

Approach to Manufacturing Technology for Silicone Rubber Moulds for Low Melting Point Alloy Jewelry

低熔点合金饰品主要采用耐热硅橡胶型离心铸造工艺生产,该工艺是采用耐热硅橡胶作为铸型材料,液态金属浇入旋转的铸型里,在离心力作用下充型并凝固成铸件的过程,其中,硅橡胶型的制作工艺对饰品铸件的质量起重要的作用。介绍了低熔点合金饰品离心铸造中硅橡胶型的基本制作过程,对硅橡胶材料、原版及浇注系统的布置、橡胶型的割模工艺等进行了分析探讨,并提出了一些原则和要求。

Low-melting point alloy jewelries were mainly manufactured with heat resistant silicone rubber mould by centrifugal process.Molten metal was poured into the rotating mould to solidify under the centrifugal forces,in which the manufacturing process of silicone rubber mould plays a key role in the quality of jewelry castings.The mainly manufacturing procedure of silicone rubber mould for low melting point alloy jewelry in centrifugal casting was described,and the key factors influencing the quality of rubber moulds were analyzed,such as silicone rubber materials,layout style of pattern and pouring system,and cutting process of the rubber mould,meanwhile,some principles and requests of the silicone rubber mould were put forward.