What's the advantages of shell molding process?
Shell mold precision casting technology has been used for decades, mainly in the casting of cast iron and nonferrous alloy. In recent years, with the rapid popularization of the application of Fused ceramic sand in coated sand, the shell mold precision casting process of Fused ceramic sand has been rapidly promoted. Fused ceramic sand has been widely used in cast iron, cast steel (including stainless steel) and other casting alloys because of its excellent properties such as round shape, high fire resistance, neutral stability of chemical properties, high strength and high recycling rate. It can partly replace the wax loss precision casting process. The dimensional accuracy of the casting can reach CT7 ~ CT6, and the surface roughness is Ra12. It is a new green casting process, which can significantly improve the productivity and quality of castings, greatly reduce the cost of castings and reduce the emission of casting waste. The key to the application of shell mold precision casting technology lies in the casting process design and old sand recycling process equipment.
How to Apply Fused Ceramic Sand to Shell Molding Process?
The application of Fused ceramic sand shell mold precision casting process has developed rapidly in recent years, from the initial bucket teeth of engineering machinery to the current general parts such as valves and water heaters, auto parts to tool hardware parts, from cast iron, cast carbon steel, to stainless steel, heat-resistant steel and non-ferrous alloys, to all fields of original sand mold casting, metal mold casting and precision casting, Good economic and social benefits have been achieved.
From the perspective of casting process, fused ceramic sand shell mold precision casting process has been widely used in the following three fields:
a. Partly replace the lost wax precision casting process. In particular, some castings with relatively simple shapes and some castings requiring cores;
b. In the case of using quartz sand shell mold casting, fused ceramic sand shell mold precision casting process is used to improve the process adaptability.
c. In order to improve casting quality, reduce molding sand consumption and improve casting production efficiency, the original small steel castings produced by the ordinary sand mold process are replaced by the new Fused ceramic sand shell mold precision casting process, etc.
Fused ceramic sand shell molding process VS traditional precision casting process
Compared with the traditional wax loss precision casting, the process of Fused ceramic sand shell mold precision casting is reduced by more than half. Under the same conditions, the production cycle is reduced by half. According to the statistics of some customers, the labor cost is reduced by more than 60%.