In order to increase the local cooling rate of precision castings, a chiller called cold iron is placed in the cavity and the working surface. In the production of precision casting stainless steel, cold molten iron, pouring system, riser and other methods are often used to control the solidification process of castings to obtain qualified castings.

The choice of precision casting cold iron materials can produce many cold iron materials. For metal and non-metallic materials, sand materials with high thermal conductivity and good heat storage can be selected. Common cold iron raw materials include cast iron, aluminum alloy, graphite, copper alloy, etc. Cast cold iron has greater heat storage, can absorb more heat, and has a strong chilling ability. The use of cold iron casting stainless steel precision cast iron, convenient operation and low cost, has been widely used in the precision casting production of aluminum alloy and magnesium alloy.

For stainless steel precision casting, when selecting cold iron materials, everyone must choose a suitable and satisfactory casting method according to the correct selection method.