Recent content by alphavince

The cores are only .250" in diameter, so they are solid shell once they finish our dipping process.

I don't think its a gas issue as we characterized the indications as micro-shrinkage through micrographs

Class 3, Grade C

We are using the AMS specs. As for the core idea, we do not use cores on these parts - we shell the cores.

Thank You, agree with you comments. We degas, verify our pouring temps for every mold. These defects are only visible on inner cores. Outer surfaces of part are very nice.

Thank you for the reply. Yes x-ray was Performed and casting meets grade. Is there anyway to Minimize or eliminate these defects

Was wondering if any anyone has experienced porosity/microshinkage with SS347 investment castings. These defects are visible in FPI and concentrated in pockets, cores, holes etc. Any help would be greatly appreciated.