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. 05, 2012
Filed:
Nov. 14, 2007
Alessandro Dulcetti, Rome, IT;
Milorad Pavlicevic, Udine, IT;
Nicoletta Zacchetti, Rome, IT;
Alessandra Primavera, Faedis, IT;
Stefano Luperi, Pomezia, IT;
Luca Lattanzi, Ocre, IT;
Simone Guanin, San Pier D'Isonzo, IT;
Alessandro Dulcetti, Rome, IT;
Milorad Pavlicevic, Udine, IT;
Nicoletta Zacchetti, Rome, IT;
Alessandra Primavera, Faedis, IT;
Stefano Luperi, Pomezia, IT;
Luca Lattanzi, Ocre, IT;
Simone Guanin, San Pier D'Isonzo, IT;
Danieli & C. Officine Meccaniche S.p.A., Buttrio, IT;
Centro Sviluppo Materiali S.p.A., Rome, IT;
Abstract
A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050° C., in an atmosphere with an oxygen content comprised in the range from 0.5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200° C. in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650° C. to ambient temperature in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions.