Invention Grant
- Patent Title: Aluminum alloy sheet with excellent post-fabrication surface qualities and method of manufacturing same
- Patent Title (中): 具有优异的后加工表面质量的铝合金板及其制造方法
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Application No.: US12934321Application Date: 2009-03-26
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Publication No.: US08366846B2Publication Date: 2013-02-05
- Inventor: Yasuo Takaki , Takeo Sakurai , Kwangjin Lee
- Applicant: Yasuo Takaki , Takeo Sakurai , Kwangjin Lee
- Applicant Address: JP Kobe-shi
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-092890 20080331
- International Application: PCT/JP2009/056116 WO 20090326
- International Announcement: WO2009/123011 WO 20091008
- Main IPC: C22F1/05
- IPC: C22F1/05 ; C22C21/08

Abstract:
Disclosed is an Al—Mg—Si aluminum alloy sheet that can prevent ridging marks during press forming and has good reproducibility even with stricter fabricating conditions. In an Al—Mg—Si aluminum alloy sheet of a specific composition, hot rolling is performed on the basis of a set relationship between the rolling start temperature Ts and the rolling finish temperature Tf° C., whereby the relationship of the cube orientation distribution profile in the horizontal direction of the sheet with the cube orientation alone or another crystal orientation distribution profile at various locations in the depth direction of the sheet is made more uniform, suppressing the appearance of ridging marks that develop during sheet press forming.
Public/Granted literature
- US20110017370A1 ALUMINUM ALLOY SHEET WITH EXCELLENT POST-FABRICATION SURFACE QUALITIES AND METHOD OF MANUFACTURING SAME Public/Granted day:2011-01-27
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