Claims
- 1. A process for fabricating aluminum alloy strip stock suitable for the manufacture of drawn and wall-ironed articles comprising
- continuously casting an aluminum alloy in strip form having a thickness up to one inch,
- homogenizing the strip at a temperature of about 950.degree. to about 1150.degree. F. for up to 50 hours,
- cold rolling the homogenized strip by at least 25% reduction in thickness,
- heating the cold rolled strip to a recovery temperature of between about 350.degree. and about 550.degree. F.,
- cold rolling the strip to a second reduction in thickness of at least 10%,
- heating the cold rolled strip to a recrystallization temperature of between about 600.degree. and about 900.degree. F. and then,
- cold rolling the recrystallized strip to a final gauge having a total reduction in thickness of at least about 50%.
- 2. The process of claim 1 wherein the continuous cast aluminum strip has a thickness of between about 0.25 and about 0.50 inch.
- 3. The process of claim 1 wherein the strip is homogenized at a temperature between about 1000.degree. and about 1100.degree. F. for about 10 to about 25 hours.
- 4. The process of claim 1 wherein the first cold roll reduction effects a reduction in thickness of about 50 to about 85%.
- 5. The process of claim 1 wherein the strip is heated at a recovery temperature between about 425.degree. and about 475.degree. F. for about 2 to about 4 hours.
- 6. The process of claim 1 wherein the strip is heated at a recovery temperature of about 425.degree. to about 475.degree. F. for about 2 to 4 hours.
- 7. The process of claim 1 wherein the cold rolled strip is heated to a recrystallization temperature between about 700.degree. and about 850.degree. F. for about 2 to about 3 hours.
- 8. The process of claim 1 wherein the second cold roll reduction effects a reduction in thickness of about 10 to 50%.
- 9. The process of claim 1 wherein the strip is heated to a second recovery temperature after the second cold roll and prior to heating the strip to the recrystallization temperature, the second recovery temperature being in the range of about 450.degree. to about 550.degree. F., the heating being effected for about 0.5 to about 3 hours.
- 10. The process of claim 1 wherein the recrystallized strip is cold rolled to a final gauge having a total reduction in thickness of about 60 to about 90%.
- 11. The process of claim 1 wherein the aluminum alloy is Aluminum Association Specification 3004 aluminum alloy.
Parent Case Info
This application is a continuation-in-part application of U.S. Ser. No. 398,735 filed July 15, 1982 and now abandoned.
US Referenced Citations (8)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
398735 |
Jul 1982 |
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