A Question About Pouring Cast Iron

jeudi 1 octobre 2015

Screenshot.jpgOver on the woodwork forum, someone recently posted links to Matthias Burger's Youtube Channel. The subject of most of his videos is traditional 15th Century Wood Framed House renovation woodworking and renovating and using late 1800s and early 1900s woodworking machinery.

However, two of his videos address making a wooden casting die, and then pouring some cast iron wheels. The following is the link to the "Casting an Iron Wheel" video.

So - now the question. At the 7 minute 56 second point in the Casting an Iron Wheel video, just as the liquid cast iron is poured from the furnace into a big ladle, the ladle operator tips a cup of something into the liquid cast iron mix. The image at left is taken from that moment in the video. Does anyone know what would have been added at that point, and why ?

Thanks,

RoyG
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