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Tongda foundry is professional on casting products in silica sol casting process. Silica sol casting is a typical investment casting process for stainless steel investment castings.The main process of silica sol casting is mould desigh & making--wax making--tree assembling--dewax--pouring--grinding-heatment-inspection-package. Tongda foundry could manufacture silica sol castings from 0.1kg-80kg.
Lost foam casting process(LFC), also called type of evaporative pattern casting, is one technic of investment casting processes.The operating principle is, making foam models with same dimensions as actual products, assembling foam models by welding, painting the foam models with fire resistant material and baking, cover the foam models with dry quartz sand for shaking modelling, casting under negative pressure to gasify the foam and fill the mould with steel water, keeping casting roughs inside sand to cool down, then do the sand clearing, shot blasting and machining process to get the finished lost foam castings.
Lost wax casting is the main technology of investment castings.The engineers in Tongda foundry have been in this field for many years with mature technology.So we are in great confidence to ensure good quality.The main process of lost wax castings is:mould design--mould making--wax injection--tree assembly--shell making-dewaxing-shell roasting-pouring-heatment treatment-machining-package.
Black oxide coating treatment is widely used as one kind of surface treatments for investment castings. Such surface treatment can help to an anti-rust layer to increase the lifetime and release the stress of the castings caused during hardening process. Surface of investment castings after black oxide will be smooth and glossy.
Tongda foundry supplies various cast stainless steel flanges in China. Cast stainless steel flange is the widely used flange materials in lots of pipeline industries. Such cast stainless steel flange are made with higher production efficiency and clow production cost. The cast stainless steel flanges are mainly used for low and medium pressure pipeline system. For high pressure working condition, the forged stainless steel flanges are required.
Investment casting process is suitable for almost all the ferrous and nonferrous materials.As a top investment casting foundry,Tongda foundry could make both ferrous and non ferrous investment castings for our customers.Now we would like to introduce what alloys can be poured in investment casting process:
