Process for making rectangular section metal wire

B - Operations – Transporting – 21 – C

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B21C 1/02 (2006.01) B21C 37/04 (2006.01) B21F 13/00 (2006.01) B23D 19/06 (2006.01)

Patent

CA 2202177

A flat sheet of metal is made to a thickness equal to one dimension of the section of the wire (10) to be drawn; the sheet is then cut lengthwise along many parallel lines whose spacing is equal to the other dimension of the section of the wire (10). The process is applied chiefly to production of rectangular or square section zirconium or zirconium alloy wire used to make guide rods for nuclear fuel assemblies or spacing rods for fuel pencils or filler rods for welding.

On réalise la fabrication d'une tôle plane dont l'épaisseur à l'état final est égale à une première dimension de la section du fil (10) à obtenir et on découpe la tôle suivant une pluralité de lignes de coupe parallèles entre elles et de direction longitudinale, de manière que l'espacement entre deux lignes de coupe successives soit égal à la seconde dimension de la section du fil (10) à obtenir. Le procédé s'applique en particulier à l'élaboration de fils en zirconium ou en alliage de zirconium à section rectangulaire ou carrée utilisés pour la fabrication de barrettes d'orientation et de guidage d'assemblages de combustible nucléaire ou de barrettes d'espacement de crayons de combustible ou encore de fils ou baguettes de soudure en métal d'apport.

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