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US 5,388,329 AGranted
Method of manufacturing a heating exchange tube
AssigneeOlin Corporation
InventorsMyron R. Randlett, Daniel J. Angeli, Ralph L. Webb
Life of this patent
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Abstract
A method for the manufacture of an enhanced heat exchange tube, in which the internal surface area is increased by either minimizing the apex angle of internal fins or increasing the fin height. The fins are formed by annealing a metallic strip while inhibiting recrystallization grain growth, texturing metallic strip, deforming the textured metallic strip into a generally circular configuration and bonding opposing edges of the strip together to form a length of tube.
Claims9
A method for the manufacture of a heat exchange tube, comprising the steps of:
- (a) annealing a metallic strip while inhibiting recrystallization grain growth;
- (b) impressing a desired texture on at least one side of said metallic strip, said texture including a plurality of fins separated by grooves;
- (c) deforming said metallic strip into a generally circular configuration with said textured side forming the inner bore;
- (d) bringing opposite edges of said metallic strip in close proximity;
- and
- (e) bonding said opposing edges together to form a length of internally enhanced tubing.
3 more elements
Dependencies are inferred from the claim text.