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:
Jun. 01, 1993
Filed:
Dec. 16, 1991
Applicant:
Inventors:
LeRoy E Dastolfo, Jr, Lower Burrell, PA (US);
Gary P Tarcy, Plum Boro, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
156637 ; 156654 ; 1566591 ; 156664 ; 252 792 ; 252 793 ;
Abstract
A substantially nitrate-free solution for milling products of refractory metals, especially titanium, which solution contains: (a) about 5-100 g/l of ammonium bifluoride; (b) up to about 90 g/1 of hydrochloric acid; (c) a hydrogen inhibitor which may be either sodium chlorate or ammonium peroxysulfate; and (d) a balance of water and impurities. There is further disclosed a method for chemically milling, etching and/or pickling metal products, such as titanium alloy forgings, with the aforementioned solution.