On how to cast aluminum castings?

When pouring aluminum castings, the thick straight runner is easy to produce binding porosity, so how to pour aluminum castings?Let's find out!

1. For large aluminum castings, one or two sets of runner can be used for pouring, and each set of runner is composed of several thin runner.

2. In the process of top injection of semi-metal mold casting, if it is not convenient to set up enough risers, funnel shaped sprue can be set at key parts. As the runner liquid level continues to sink, multiple additional sprays can be conducted to achieve the effect of full shrinkage.

3, for large aluminum castings with more baffles, it is very important to avoid undercasting defects and exhaust of the castings themselves.