The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 1980
Filed:
Jan. 19, 1978
Enrique C Chia, Carroll County, GA (US);
Roger J Schoerner, Carroll County, GA (US);
Southwire Company, Carrollton, GA (US);
Abstract
This disclosure relates to a method and apparatus for manufacturing an aluminum alloy electrical conductor which promote the formation of a wire having a fine, stable subgrain structure of small cell size in the aluminum matrix and a fine dispersion of stable, insoluble intermetallic phase particles. The subgrain structure is improved by closely controlling the thermomechanical processing, particularly the casting rate, deformation parameters and annealing characteristics. After casting, the cast product is substantially immediately hot-formed in a rolling mill wherein the first deformation is more than 30% such that a substantially well defined subgrain structure will be formed in the aluminum matrix, thereby maximizing a refinement of the subgrain structure by permitting breaking-up thereof in each of the subsequent deformations in the rolling mill. After cold-working, without preliminary or intermediate anneals, the product is finally annealed at a temperature not exceeding approximately 700.degree. F.