Aluminum alloy sheet with excellent formability and method for m

Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...

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148251, 148265, 148275, 148692, C23C 2200

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active

061102970

ABSTRACT:
The invention provides an aluminum alloy sheet that has excellent formability, high coat-baking hardenability, excellent corrosion resistance, and is particularly suitable for external automobile body plates. The aluminum alloy sheet comprises: 0.9 to 1.3 wt. % of Si, 0.4 to 0.6 wt. % of Mg, 0.05 to 0.15 wt. % of Mn, 0.01 to 0.1 wt. % of Ti, with the remainder comprising Al and inevitable impurities, while limiting Fe as an impurity to 0.2 wt. % or less and Cu as an impurity to 0.1 wt. % or less. The aluminum homogenizing an aluminum ingot with the above-described composition; cooling the homogenized ingot to a temperature of 450.degree. C. or below to begin hot-rolling; finishing hot-rolling in a temperature range from 250 to 350.degree. C.; applying intermediate annealing to the hot-rolled plate; conducting cold-rolling at a draft of 70% or more; applying a solid solution treatment followed by quenching the alloy sheet and holding it at 530.degree. C. or above for 60 sec. or less; forming a chromate film onto the quenched alloy sheet; forming a film of a lubricant containing a water-dispersible polyurethane resin and a natural wax onto the chromate film; then applying a heat treatment to the coated alloy sheet in a temperature range of from 200 to 240.degree. C. for 60 sec. or less.

REFERENCES:
patent: 3392062 (1968-07-01), Altenpohl et al.
patent: 4816087 (1989-03-01), Cho
patent: 5384161 (1995-01-01), Eisfeller et al.
patent: 5478414 (1995-12-01), Mozelewski et al.
patent: 5480498 (1996-01-01), Beaudoin et al.
patent: 5512111 (1996-04-01), Tahara et al.

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