Method of producing zircaloy tubes

B - Operations – Transporting – 21 – B

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80/20, 80/52

B21B 19/06 (2006.01) B21B 21/00 (2006.01) B21B 3/00 (2006.01)

Patent

CA 1075506

Abstract of the Disclosure A method for producing zircaloy tubes from hollows or workpieces which are in the form of tubes having greater wall thickness than the finished tubes. The method is carried out upon a mill of the general type known as a McKay rocker which has a stationary tapered mandrel, but the mandrel is cylindrical and is moved with the workpiece. The metal is worked in such a manner as to produce radial grain orientation and fine grain structure. Close tolerances are maintained on the outside and inside diameters, and the tubes have high strength and ducti- lity. The grain structure provides increased working life for the zircaloy tubes.

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