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Defects can not be avoided for casting technics, whether it's investment casting or sand casting.
In modern society,agricultural machinery is becoming more and more important than before by development of science and technology .So some advanced agricultural machines like tractor,cultivator,chisel plow,subsoiler,air seeder,harvester,ect are made for production demands
Investment casting is also called lost wax casting.Its products are precise,complex and near to final shape.We could use directly with little machining or no machining.So investment casting is a net shaped advanced technology.
Casting generally does not apply pressure,and not require high strength of equipment and molds, has small restrictions on product size. Therefore, the production investment is less, and large-scale parts with excellent performance can be obtained, but the production cycle is long, and mechanical processing must be carried out after molding. On the basis of traditional casting, methods such as pouring, insert casting, pressure casting, spin casting and centrifugal casting are derived.
Tongda foundry supplies cast stainless steel fittings for a long time in China.
Shrinkage is one of the common problems for steel castings in China. There're certain rules on shrinking percentage of steel castings.
