The uniskan process of metal working is a type of roll forming process suitable for the fabrication of thin walled shells or tubing. Uniskanning is unique in that high unit compressive forces are brought to bear on the metal specimen by three forming rolls spaced approximately 120 degrees apart on the same horizontal plane with axes parallel to the axis of rotation of the specimen which is translated in a direction parallel to the axes of the rolls. At HAPO the process has been shown to be capable of producing thin tubular sections, 0.001" to 0.020" wall thickness, from comparatively heavy wall wall cups or sleeves, in a variety of metals including aluminum, mild steel, nickel, and zirconium. Reductions approaching 90 per cent have been made in one pass on zirconium, and a 20 per cent, one pass reduction, has been made on uranium. The mechanical properties of the materials are comparable to those produced by other cold working processes and the relations between the tensile strengths of zirconium, nickel, and aluminum and the percentages of reduction are shown.
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