manufacturing process of cladding tubes and a zirconium base alloy tubes so obtained

摘要

In the manufacture of cladding tubes of a zirconium-based alloy for fuel rods for nuclear reactors by extrusion of the zirconiumbased alloy and cold rollings of the extruded product with annealings, intermediate annealings, between the cold rollings and a .beta.quenching prior to the last cold rolling, a cladding tube is provided which has at the same time good corrosion properties and mechanical properties by performing the .beta.-quenching prior to a cold rolling, after which an intermediate annealing is performed at a temperature of 500-675 .degree.C, and preferably at a temperature of 500-610 .degree.C. |