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Device for dispensing additive in molten metal sample mold

Image Number 3 for United States Patent #5948350.

A mold for sampling molten metals includes a cavity body for receiving a measured sample of a molten metal, and, an insert containing a material for promoting carbide formation in the molten metal as it cools, the insert containing a measured amount of the material in finely divided solid form. The insert may be adhered to a recess in the mold surface or within a fill inlet passage and is preferably in the form of an enclosed tube formed of thin-walled material which contains the carbide formation promoting material in finely divided solid form. The insert may be formed of a metal closed at one end by a plastic adhesive material which opens upon immersion to release a stream of the carbide formation promoting material into the fill opening of the mold.

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