grey iron sand casting_

4. Preheating the Shell The empty, pre-heated shell is then subjected to a high-temperature oven. Preheating serves multiple purposes, including ensuring that the aluminum flows smoothly into the mold and aiding in the removal of any residual wax.

- Automotive Parts Engine blocks, cylinder heads, and transmission cases are often produced using green sand casting, given the method's ability to produce intricate designs and robust components.