Method of manufacturing aluminum alloy sheets excellent in hot formability
US4699673A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1985 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Jun 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacturing an aluminum alloy sheet excellent in hot formability. A hot rolled plate of an aluminum alloy is cold rolled into a cold rolled sheet with a reduction ratio of at least 20%. The cold rolled sheet thus obtained is subjected to intermediate heat treatment wherein it is heated to a temperature of 420.degree. to 560.degree. C., at a heating rate of at least 2.degree. C. per second while it is heated from 150.degree. to 350.degree. C., and the sheet is then cooled to room temperature, at a cooling rate of at least 1.degree. C. per second while it is cooled from 420.degree. to 150.degree. C. The resulting heat treated sheet is subjected to final cold rolling with a reduction ratio of 15 to 60%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.