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. 02, 1998
Filed:
Aug. 30, 1996
Heinz Berger, Neunkirchen-Vluyn, DE;
Rolf Noe, Mulheim, DE;
Frank Barhold, Quirmbach, DE;
Jorg Neumann, Ransbach-Baumbach, DE;
Andreas Noe, Mulheim, DE;
Ralf Waldmann, Ruscheid, DE;
Bodo Block, Rosrath, DE;
Keramchemie GmbH, Siershahn, DE;
BWG Bergwerk- und Walzwerk Maschinenbau GmbH, Duisberg, DE;
Abstract
A method of producing a cold-rolled strip from a stainless, ferretic or austenitic high-grade steel or a titanium alloy, wherein the strip which has been wound into a coil and has been manufactured by a hot-rolling or casting process is subjected in one pass to the steps of unwinding the coil, mechanically descaling the strip if required, subsequently chemically and/or electrochemically first or black pickling of the strip, then cold-rolling the strip to finished dimensions, degreasing the strip as required, annealing the strip, finish-pickling the strip and, if necessary, passivating, dressing and stretcher-leveling the strip. The pickling step is carried out in a pickling solution which contains hydrochloric acid, sulfuric acid and/or nitric acid.