Process and device for producing a steel strip with the properties of a cold-rolled product
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United States of America Patent
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Nov 10, 1998
Grant Date -
N/A
app pub date -
Apr 21, 1997
filing date -
Oct 20, 1994
priority date (Note) -
In Force
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Abstract
A process for producing a steel strip with properties of a cold-rolled product. The process including comprising the sequential steps of: a) producing a thin slab 30 to 100 mm thick from a steel melt by continuous casting in a continuous casting machine, and, after a cast strip emerges from a mold of the continuous casting machine, cast rolling the cast strip with a liquid core to reduce thickness of the cast strip by at least 10%; b) descaling the thin slab produced according to step a); c) hot rolling the descaled thin slab at temperatures in a range of 1150.degree. to 900.degree. C. for reducing thickness by at least 50% to produce an intermediate strip with a maximum thickness of 20 mm; d) after hot rolling, accelerated cooling of the intermediate strip to a temperature in a range of 850.degree. to 600.degree. C.; e) rolling down the cooled intermediate strip by isothermic rolling at 850.degree. to 600.degree. C. on a finishing train with at least three stands into strips with a maximum thickness of 2 mm, whereby the strip thickness is reduced by at least 25% per roll pass; and f) subsequently cooling the isothermic rolled steel strip in accelerated fashion to a temperature no greater than 100.degree. C.

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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MANNESMANN AKTIENGESELLSCHAFT | 40213 DÜSSELDORF |
International Classification(s)

- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bleck, Wolfgang | Aachen, DE | 4 | 20 |
Pleschiutschnigg, Fritz-Peter | Duisburg, DE | 68 | 238 |
Splinter, Paul | Aachen, DE | 3 | 18 |
von, Hagen Ingo | Krefeld, DE | 22 | 107 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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