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.
Provided is a method of manufacturing a clad steel sheet. The method includes: preparing a base material including C: 0.3 to 1.0%, Mn: 4.0 to 16.0%, Al: 4.5 to 9.0%, and a remainder of Fe and inevitable impurities; preparing a cladding material including C: 0.1 to 0.45%, Mn: 0.1 to 3.0%, and a remainder of Fe and inevitable impurities; disposing the base material between two of the cladding material to obtain a laminate; welding an edge of the laminate; heating the welded laminate between 1050 and 1350° C.; finish-rolling the heated laminate between 750 and 1050° C. with a rolling reduction ratio of 30% or more in a first pass; coiling the hot-rolled steel sheet between 400 and 700° C.; pickling the coiled hot-rolled steel sheet, and applying a cold-reduction ratio of 35 to 90%; and annealing the cold-rolled steel sheet between 550° C. and A3+200° C. of the cladding material.
