Process and plant for descaling, pickling and finishing passivating stainless steel strips, and strips so obtainable
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United States of America Patent
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Sep 21, 2010
Grant Date -
Feb 23, 2006
app pub date -
Dec 29, 2002
filing date -
Dec 19, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Environment-friendly process for descaling, pickling and finishing/passivating in a continuous, integrated and flexible manner, applicable to any type of stainless steel, regardless of its physical structure, chemical composition and nature of surface oxides to be removed, within a single plant in which the required chemical, electrochemical, mechanical and hydromechanical treatments are carried out, merely diversifying the operative conditions of each treatment according to the stainless steel type to be processed. The process and the plant according to the invention allow elevated reaction rate, excellent surface quality, low energy and chemical reagent consumption and total environmental compatibility. The figure shows the block diagram of an embodiment of the plant according to the invention.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HENKEL KGAA | DUSSELDORF | |
CENTRO SVILUPPO MATERIALI S P A | VIA DI CASTEL ROMANO 100-102 ROMA 00129 | |
THYSSENKRUPP ACCIAI SPECIALI TERNI S P A | VIALE BENEDETTO BRIN 218 I-05100 TERNI |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Demertzis, Yean | Milan, IT | 2 | 4 |
Dulcetti, Alessandro | Rome, IT | 3 | 6 |
Luperi, Stefano | Rome, IT | 3 | 6 |
Mantovani, Stefano | Milan, IT | 1 | 3 |
Salamone, Gianvincenzo | Terni, IT | 2 | 4 |
Vespasiani, Giovanni | Terni, IT | 1 | 3 |
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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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