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:
Dec. 09, 1980
Filed:
Dec. 18, 1978
Peter Ruchel, Lauf, DE;
Diehl GmbH & Co., Nuremberg, DE;
Abstract
A process for the preparation of a copper-zinc material consists of setting out with an alloy having a theoretical copper content of 61 to 65%, preferably 62% by weight, with the remainder being zinc and common impurities. This alloy is initially cast and, if necessary, subjected to an .alpha. stabilizing annealing. After subsequent cold working in one or a few operative steps with a degree of deformation of at least 70%, the alloy is subjected to a heat treatment so as to lead to a .beta..sub.1 precipitation and recrystallization. The alloy then evidences a structure in which the recrystallized phases .alpha. and .beta..sub.1 are present as a discrete fine mixture. Thereafter, the alloy can be again cold worked and annealed.