Blog
Green sand casting processing
1. Mould
In sand casting, the mold is made of wood or other metal materials. In this process, we ask our engineers to make the mold size slightly larger than the finished product, and the difference is called the shrinkage allowance. The purpose is that the molten metal acts on the mold to ensure that the molten metal solidifies and shrinks, thereby preventing voids during the casting process.
2. Core making
The core is made only by placing resin sand particles in a mold to form a casting on the inner surface. Therefore, the gap between the core and the mold eventually becomes cast.
3. Forming
A pair of molds needs to be prepared during the smelting and molding process. Molding usually involves the support frame of the mold, pulling out the mold to separate it during the casting process, melting the previously placed core in the mold and closing the mold opening.
4. Clean
The purpose of cleaning is to remove sand, sand, and excess metal in castings. Welding and sand removal can improve the surface appearance of castings
The burnt sand and scale are all demolished to improve the surface appearance of the casting. Excess metal and other risers are cleared. One step closer to welding, polishing and other steps. Finally, check its defects and comprehensive quality.
5. Organize
Reprocess before shipment. According to the requirements of different customers, we can do heat treatment, surface treatment, additional inspections and so on.
86-532-86168115
+86-18561456376
Tel: 86-532-86168115
