B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/06 (2006.01) C21D 8/00 (2006.01) C22C 38/22 (2006.01)
Patent
CA 2234945
A belt for use in the casting of metals and a method for its manufacture in which a metal belt is first subjected to heat treatment, quenching and tempering to improve its strength and decrease its stretchability. Then the belt is treated to introduce surface irregularities to promote uniformity of heat transfer and to allow collection of surface gases and then the belt is subjected to further thermal treatment under controlled conditions to form an oxide layer thereon to minimize adhesion between the belt and the metal deposited thereon.
L'invention porte sur une bande utilisée pour la coulée en continu de métaux et son procédé de fabrication. La bande, tout d'abord soumise à un traitement thermique, trempée, puis revenue pour en améliorer la résistance et en réduire l'étirabilité, est ensuite traitée pour produire à sa surface des irrégularités qui favorisent l'uniformité du transfert de la chaleur et permettent la collecte des gaz de surface, puis soumise à un deuxième traitement thermique dans des conditions régulées pour la recouvrir d'une couche d'oxyde réduisant l'adhérence entre la bande et le métal qui y est déposé.
Alcoa Inc.
Kaiser Aluminum & Chemical Corporation
Osler Hoskin & Harcourt Llp
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