China precision casting, lost wax casting, steel casting foundry
Carbon steel investment casting is the most common steel precision casting process from the steel investment casting industry started flourishing in Ningbo area. At the beginning, investment casting factories were using water glass as molding material. It is an affective and economical means for production carbon steel precision casting. However the shrinkage rate of water glass is quire large so that the dimension precision level of carbon steel precision castings is not satisfactory. Currently most investment casting foundries apply a combined molding means to produce carbon steel precision castings, which is to use silica sol as the initial adhesive layer for sand shell and water glass for the rest layers of sand shell. The combined molding means can achieve much high dimension precision with quite economical production cost.
Carbon steel precision castings don't have surface quality and dimension precision requirement as high as stainless steel precision castings. Thus we normally apply water glass - silica sol combined molding means to cast carbon steel castings. Such carbon steel investment castings have better surface quality and dimension precision than those produced by unique water glass precision casting process.
Carbon steel castings have wide application in various industrial field. The main carbon steel cast products of Cinda steel investment casting foundry are carbon steel cast marine hardware, building hardware and mine machinery parts
Carbon steel precision castings can bear heavy load and have quite good toughness, thus they are suitable for large size marine hardware, building hardware and heavy mine machinery facilities.
Water glass investment casting for carbon steel was a common lost wax casting process in Ningbo area. However most foundries have abandoned such simple and rough casting process. As an alternative precision casting means, currently we use water glass and silica sol precision casting means for carbon steel investment castings.
Carbon steel precision cast marine hardware for dock facility
Carbon steel precision cast building hardware as beam accessory
Heat treatment for carbon steel casting is a common post treatment process in order to improve its mechanical property.
Besides, carbon steel cast products are always required to do zinc plating, which can has various kinds such as yellow zinc plating, blue zinc plating and white zinc plating.