PRODUCTION OF ALUMINUM OR ALUMINUM ALLOY STRIP HAVING UNIFORM DISTRIBUTION OF METALLIC STRUCTURE

PURPOSE:To produce an Al alloy strip having uniform distribution of metallic structure by specifying the hot roughing initiating temp. of an Al alloy ingot with a specific composition, reheating in the course of rolling, and hot finish rolling finishing temp., respectively. CONSTITUTION:At the time...

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Bibliographic Details
Main Authors TSUCHIDA MAKOTO, MORIYAMA TSUTOMU
Format Patent
LanguageEnglish
Published 10.01.1992
Subjects
ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To produce an Al alloy strip having uniform distribution of metallic structure by specifying the hot roughing initiating temp. of an Al alloy ingot with a specific composition, reheating in the course of rolling, and hot finish rolling finishing temp., respectively. CONSTITUTION:At the time of subjecting an ingot of an aluminum alloy having a composition consisting of, by weight, <=1.5% (Si+Fe), one or more components among <=0.5% Cu, <=0.5% Mn, and <=1.0% Mg, and the balance essentially Al to hot rolling (hot roughing + hot finish rolling), this ingot is heated to 350-450 deg.C and hot roughing is started. Then, midway between hot roughing and hot finish rolling in the course of rolling, reheating is exerted up to 300-450 deg.C at 5 deg.C/sec -500 deg.C/sec temp.-rise rate and finish rolling is carried out by performing cooling by means of water soluble rolling mill lubricating oil so that hot finish rolling finishing temp. is regulated to <=250 deg.C, followed by coiling. By this method, the aluminum alloy strip having superior plastic anisotropy and reduced in dispersion of mechanical properties can be obtained.
Bibliography:Application Number: JP19900106609