Steel sheet with low aluminum content for containers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 13, 2005
Grant Date -
N/A
app pub date -
Jul 3, 2000
filing date -
Jul 1, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a process for manufacturing a steel strip with low aluminum content, which includes: hot-rolling a steel strip including between 0.050 and 0.080% by weight of carbon, between 0.25 and 0.40% by weight of manganese, less than 0.020% by weight of aluminum, and between 0.010 and 0.014% by weight of nitrogen, the remainder being iron and inevitable trace impurities, to form a strip; subjecting the strip to a first cold-rolling, to produce a cold-rolled strip; annealing the cold-rolled strip, to form an annealed cold-rolled strip; optionally, subjecting the annealed cold-rolled strip to a secondary cold-rolling; wherein the annealing is a continuous annealing comprising: raising the temperature of the strip to a temperature higher than the temperature of onset of pearlitic transformation Ac1, holding the strip above this temperature for a duration of longer than 10 seconds, rapidly cooling the strip to a temperature below 100° C. at a cooling rate in excess of 100° C. per second, thermally treating the strip at a low temperature ranging between 100° C. and 300° C. for a duration in excess of 10 seconds, and cooling the strip to room temperature and steel sheet produced therefrom.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully