Precision casting processing and casting process       Precision casting foundry process is very strict operation, will also feel will be different in the process of casting, precision casting and actually common casting casting process is a little difference.Precision casting post-processing and pouring process:Mould hardening was removed after casting can immediately or cold buy 1-2 hours after the burner.Cast cold place when should pay attention to prevent cough evaporation coating, so to cover mold.The burner of mold then roasting.Far in 700.800.Zero temperature of melting heat 3-4 hours is enough, pouring or melt after burning can immediately after pouring cooling.Precision casting casting process and the general casting process, there is no difference.
o scale will increase the brittleness of steel, such as in pig iron carburization, feeding carefully, or the accounting, will bring into harmful elements.4, lost wax casting molten steel overheating and severe heat treatment operation wrong, coarse grains.