Investment casting is also called Lost wax casting.The largest steel investment casting we can make is 300kg and 30kg for aluminum investment casting.The unit cost by investment casting is higher than die casting or sand casting, but it has a lower equipment cost.Investment casting can make very complicated shapes which cannot be reached by die casting or sand casting.
Two types of investment casting are water glass investment casting and silica sol investment casting.
Process:
1. Produce the wax patterns;
2. Assemble the wax patterns;
3. Investment (ceramic mold);
4. Dewax;
5. Burnout & preheating;
6. Pouring;
7. Removal;
