CERAMIC MOLDS CASTINGS

Sinotech can ensure excellent ceramic mold castings from China and is very price competitive. Sinotech has audited, qualified and worked with QS-9000 and ISO certified ceramic mold casting factories in China for over 12 years. Sinotech is dedicated to managing your project on-site in China and delivering parts to you at lower prices but the same quality, service and terms as a domestic supplier.

Similar to plaster mold casting, the pattern used in ceramic mold casting is made of plaster, plastic, wood, metal or rubber. A slurry of ceramic is poured over the pattern. It hardens rapidly to the consistency of rubber. This can be peeled of the pattern, reassembled as a mold. The volatiles are removed using a flame torch or in a low temperature oven. It is then baked in a furnace at about 1000 Deg C (1832 Deg F) yielding a ceramic mold, capable of high temperature pours. Additionally, the pour can take place while the mold is until hot.

Tolerances can be held to 0.4 %, surface finishes can be better than 2 - 4.5 mm (.075 - .15 in). Add 0.3 mm (.012 in) for parting line tolerances. Wall thickness can be as small as 1.25 mm (.050 in), and the weights can range from 60 g (2oz) to a ton. Draft allowance of 1� is recommended.

This process is expensive, but can eliminate secondary machining operations. Typical parts made from this process include impellers made from stainless steel, bronze, complex cutting tools, plastic mold tooling.