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:
May. 20, 2008
Filed:
Dec. 20, 2002
Christian Marchionni, Rosselange, FR;
Yann Le Papillon, Marange Silvange, FR;
Alain Leclercq, Paris, FR;
Michel Faral, Metz, FR;
Jean-michel Damasse, Rome, IT;
Philippe Rocabois, Metz, FR;
Christian Marchionni, Rosselange, FR;
Yann Le Papillon, Marange Silvange, FR;
Alain Leclercq, Paris, FR;
Michel Faral, Metz, FR;
Jean-Michel Damasse, Rome, IT;
Philippe Rocabois, Metz, FR;
USINOR, Puteaux, FR;
Abstract
A metallurgical product, made of carbon steel and to be galvanized, which is in the form of a strip or of a sheet obtained from a continuously cast intermediate product having the following composition by weight: 0.0005%≦C≦0.15%; 0.08%≦Mn≦2%; Si≦0.040%; Al≦0.010%; Al≦0.004%; 0.0050%≦O≦0.0500%; P≦0.20%; S≦0.10%; each of Cu, Cr, Ni, Mo, W, Co≦1%; each of Ti, Nb, V, Zr≦0.5%; each of Sn, Sb, As≦0.1%; B≦0.1%; N≦0.0400%; and the remainder being iron and impurities. Also, a process for obtaining a metallurgical intermediate product, which includes: producing in a ladle a liquid steel the composition of which is as above, and in which the dissolved oxygen content is maintained between 0.0050 and 0.0500% by the establishment of a chemical equilibrium between the metal and the ladle slag; and casting the steel on a continuous casting machine.