Guangdong Stainless Steel CastingProcessing belongs to investment casting or precision casting. It is a casting process with little or no cutting, and it is an excellent process technology in the foundry industry.

It is not only suitable for the casting of various types and alloys, but also produces castings with higher dimensional accuracy and surface quality than other casting methods, and even complex, high-temperature resistant, and difficult-to-process castings that are difficult to cast by other casting methods. Can be cast by investment casting.

The so-called stainless steelCoffee machine accessoriesProcessing, in short, is to use fusible materials (such as wax or plastic) to make a fusible model (investment or model for short), apply several layers of special refractory coatings on it, and dry and harden to form a whole After the shell, use steam or hot water to melt the model from the shell, then put the shell in the sand box, fill with dry sand modeling around it, and finally put the mold in the roasting furnace for high-temperature roasting (if used For high-strength molds, the mold shells after demolding can be directly fired without modeling). After the molds or molds are fired, molten metal is poured into them to obtain castings.

Stainless steel casting processing-investment castings have high dimensional accuracy, generally up to CT4-6 (sand casting is CT10~13, die casting is CT5~7), of course, due to the complex process of investment casting, there are more factors affecting the dimensional accuracy of castings Many, such as the shrinkage of the mold material, the deformation of the investment mold, the linear change of the shell in the heating and cooling process, the shrinkage of the alloy and the deformation of the casting during the solidification process, so the dimensional accuracy of ordinary investment castings is relatively high. High, but its consistency still needs to be improved (the size consistency of castings with medium and high temperature wax materials should be improved a lot).

Dongguan Precision CastingWhen the stainless steel casting process presses the investment mold, the pressure type with high surface smoothness of the cavity is used, so the surface smoothness of the investment mold is also relatively high. In addition, the shell is made of a refractory coating made of a high-temperature-resistant special adhesive and refractory material, which is coated on the investment mold, and the inner surface of the cavity that is in direct contact with the molten metal has a high smoothness. Therefore, the surface finish of investment castings is higher than that of general castings, generally reaching Ra.1.6~3.2μm.