Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1993-08-18
1995-01-10
Zimmerman, John
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148438, 148696, 420538, 420551, C22F 104, C22C 2100
Patent
active
053803795
ABSTRACT:
There is claimed an aluminum alloy sheet product having a composition consisting essentially of: about 1.35-1.6 wt. % iron; about 0.3-0.6 wt. % manganese; about 0.1-0.4 (and preferably about 0.22-0.4) wt. % copper; about 0.05-0.1 wt. % titanium; about 0.01-0.02 wt. % boron; up to about: 0.2 wt. % silicon, 0.02 wt. % chromium, 0.005 wt. % magnesium and 0.05 wt. % zinc; and a balance of aluminum, incidental elements and impurities. This composition is cast to an initial thickness greater than about 3 mm (0.12 inch). The end product exhibits improved strength and surface properties through a manufacturing process which includes: heat treating at one or more temperatures above about 450.degree. C. (842.degree. F.), and preferably below about 500.degree. C. (932.degree. F.); before rolling to final gauge. When cold rolled to various thicknesses, this sheet product exhibits ultimate tensile strength values ranging from 11-15 kg/mm.sup.2 for thin and intermediate gauge products, to about 27-30 kg/mm.sup.2 (38.4-42.7 ksi) for the finstocks made hereby. Percent elongations vary from a minimum of 3% to greater than 10%.
REFERENCES:
patent: 3397044 (1968-08-01), Bylund
patent: 3814590 (1974-06-01), Bylund
patent: 3989548 (1976-11-01), Morris
patent: 4164434 (1979-08-01), Fister et al.
patent: 4483719 (1984-11-01), Furrer et al.
patent: 4671985 (1987-06-01), Rodrigues et al.
patent: 4737198 (1988-04-01), Shabel et al.
patent: 4800950 (1989-01-01), Crona et al.
patent: 4802935 (1989-02-01), Crona et al.
patent: 4806211 (1989-02-01), Timm et al.
patent: 5030416 (1991-04-01), Werner et al.
patent: 5080728 (1992-01-01), Hasenclever
patent: 5148862 (1992-09-01), Hashiura et al.
F. Wehner et al., "Selecting Aluminum Alloys For Light Weight Heat Exchanger Fins", Z. Werkstofftech, vol. 17(2), pp. 48-52., (1986).
R. Mahmudi et al., "Mechanical Properties and Formability of Fine Grained Aluminum Alloy Sheet", Aluminum, vol. 63(1), pp. 62-66, (1987).
R. J. Dean et al., "Production of High Quality Aluminum Foil", Int. J. of Materials and Product Technology, vol. 2 Nos. 3/4, pp. 281-295, (1987).
P. Griffin, "Manufacture of Light Gauge Aluminum Foil", Foil, vol. 8, No. 7, pp. 21-23, Oct./Nov. 1989.
Clemente Aldenir J.
Maiwald Klaus P.
Soares Marcio D.
Alcoa Aluminio Do Nordeste S.A.
Topolosky Gary P.
Zimmerman John
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