Method of manufacturing casting belts for use in the casting of metals
AssigneeKaiser Aluminum & Chemical Corporation
InventorDonald G. Harrington
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Abstract
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.
Claims28
A method for the manufacture of casting belts for use in the casting of metals comprising the steps of:
- (a) providing an endless metal belt;
- (b) subjecting the belt to a heat treatment of solutionizing, quenching and tempering to improve its strength and decrease its stretchability;
- (c) treating the belt to introduce to the outer surface irregularities in that surface to improve uniformity of heat transfer between the belt and molten metal deposited thereon and to allow the collection of surface gases from between the surface of the belt and the metal deposited thereon;
- and
- (d) subjecting the belt to a thermal treatment under controlled conditions of an elevated temperature to form on the surface of the belt an oxide layer having a thickness sufficient to substantially minimize adhesion between metals deposited thereon and the surface of the belt.
A method for the manufacture of casting belts for use in the casting of metals comprising the steps of:
- (a) providing an endless metal belt which has been treated to improve its strength and decrease its stretchability;
- (b) treating the belt to introduce to the outer surface irregularities in that surface to improve uniformity of heat transfer between the belt and molten metal deposited thereon and to allow the collection of surface gases from between the surface of the belt and the metal deposited thereon;
- and
- (c) subjecting the belt to a thermal treatment under controlled conditions of an elevated temperature to form on the surface of the belt an oxide layer having a thickness sufficient to substantially minimize adhesion between metals deposited thereon and the surface of the belt.
Dependencies are inferred from the claim text.