Abstract: Highly effective insulated samplers, submerged through floating slag on a body of molten metal, successfully extract, chill and withdraw pin samples and disc samples of specific, predetermined shapes and sizes with high reliability. Deoxidant materials are introduced into the melt just before the sample is taken, whenever required. To eliminate gas bubble inclusions from the chilled samples, ablative deoxidant chambers are employed to carry the deoxidant materials, and are then melted away by the high temperature molten metal being sampled. A disc sampler chill mold provides three rows of vent slots to produce rapid and reliable chilling of disc-shaped samples.

Abstract: A portable elongated sampler assembly for molten metals incorporates a long, open-ended heat-insulated lance tube carrying, removably telescoped in its open distal end and protruding therefrom, a hollow cylindrical chill mold tube sampler, and a longitudinally reciprocable ejector hammer assembly extends inside the opposite proximal end of the lance tube. Upon actuation, the ejector hammer impacts the telescoped end of the sampler, ejecting it from the lance tube. The sampler preferably includes a ceramic chill mold tube embraced in a hinged, detachable hollow riser vent conducting air displaced by molten metal from the sampler through vent slots to the atmosphere, and the entrance portal of the chill mold tube is closed by a sheet metal cap having an exterior paper slag-cover thereon. Metal deoxidant in wire coil form is embraced between the cap and the entrance portal of the chill mold tube.