"Wax" is a common casting method, the first mold made of aluminum workpiece, such as the injection mold and the wax of this step is called "wax", and wax, etc. After cooling, remove the wax portion is called the "back mode ", then the physical size of the wax mold is consistent with (actual size has been enlarged according to the proportion of the casting contraction), then sand the surface to be covered with wax, dip the real reach a certain thickness, this step is called" stained sand ", etc. after the wax mold surface covered with sand bonded sand casting wax mold into boiling water and cook the wax eventually leaving a sandy shell of this step is called "boiling wax", and finally buried in the sand shell in the sand casting molten iron sand shell extension pour molten iron in sand molds last stay in the cooled, became a casting.
