US3924428A - Method of and apparatus for descaling and leveling a metal strip - Google Patents

Method of and apparatus for descaling and leveling a metal strip Download PDF

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US3924428A
US3924428A US512604A US51260474A US3924428A US 3924428 A US3924428 A US 3924428A US 512604 A US512604 A US 512604A US 51260474 A US51260474 A US 51260474A US 3924428 A US3924428 A US 3924428A
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strip
tensioner
roller
downstream
descaling
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US512604A
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Oskar Noe
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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BWG Bergwerk und Walzwerk Maschinenbau GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • B21C43/04—Devices for de-scaling wire or like flexible work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4517—Rolling deformation or deflection

Definitions

  • ABSTRACT A metal strip is passed continuously through three [30] Forelgn Apphcatlon Pnonty Dam succeeding roller-tensioning devices. Between the up- Oct. 8, 1973 Germany 2350503 stream and central tensioning device the strip is elongated by between 0.5 and 1.3 percent so as to descale [52] US. Cl. 72/40; 29/81 A; 72/ 161; this strip. Between the central tensioning device and 3; 6 /3 P the downstream tensioning device the strip is elon- [51] Int. C1. B21B 45/06; B21D 1/04 gated by between 2 and 2.5 percent so as to le el th [58] Field of Search 72/39, 40, 205, 161, 160, strip and prevent end bowing thereof.
  • the present invention relates to a method of and an apparatus for descaling and leveling a metal strip. More particularly this invention concerns a roller-levelerthrough which a metal strip is passed beforepickling.
  • the apparatus Prior to thepickling of a metal strip, in particular a steel strip, it is necessary toldescale the strip. This;is done in a so-called roller-leveler which stretches the sheet longitudinally to a limited extent while alternately and reverse bending it soas to remove all ;of the scale thereon. At the same time the stripis flattened 2
  • the apparatus according to the present invention comprises three roller ten'sioners separating two reverse bending devices. The strip is descaledbetween the extreme upstream and the central roller tensioner and is leveled between the central and the extreme downstream roller tensioner.
  • Another object is the provision of improved system for descaling and leveling a metal strip.
  • Yet another object is to provide such an apparatus which in one simple operation both effectively descales the strip and leveling it perfectly, thereby eliminating any lateral bowing at the ends thereof.
  • the maximum-descaling stretch in the upstream device is between 0.5 percent and 1.3 percent for removal of scale on the strip.
  • the extent of stretch in the downward stream assembly serving to level the strip is greater than 2 percent, advantageously between 2 and 2.5 percent.
  • a steel strip 1 is passed in a direction 8 through three succeeding roller-tensioners 2a, 2b, and 20 each having two respective driven tension rollers 3a, 3b, and 3c.
  • a reverse-bending device 4 having three reversing rollers 9 much as described in my US. Pat. No. 3,777,532 issued on Dec. 11, 1973.
  • Idler rollers 5 are employed to either side of this reverse bender 4 for proper feeding of the strip 1.
  • a similar reverse bender 4" having rollers 9" is provided between the central tensioning assembly 2b and the downstream tensioning assembly 20. After exiting from the downstream assembly 20 the strip 1 is pickled.
  • the drive motor of the assembly 2c is driven at a rate relative to the drive speed of the motor 10b of the assembly 2b to stretch the strip 1 between these two assemblies 2b and 2c by an extent equal to between 2 percent and 3 percent.
  • band section 6 between the upstream assembly 2a and second assembly 2b is subjected to a longitudinal tension of approximately 10 tons while the ;tension on the section 7 between the assembly 2b and the assembly 20 is equal to approximately 20 tons.
  • the system and apparatus according to the present invention is equally usable with nonferrous metal sheets. It is also possible to provide in the system according to the present invention various metal working machines between the rolling-tensioning assemblies 2a 20. Four such assemblies could also be provided as could only two to carry out the present invention.
  • a method of treating a metal strip comprising the steps of:
  • An apparatus for treating a metal strip comprising:
  • descaling means for longitudinally stretching said strip to a relatively small extent between 0.5 and 1.3 percent to remove scale therefrom; reverse bending means for reverse bending said strip simultaneously with the longitudinal stretching thereof by said descaling means;
  • said descaling means includes an upstream roller-tensioner
  • said leveling means includes a downstream roller-tensioner
  • said apparatus includes a central roller tensioner between said upstream and downstream roller tensioners, an upstream reverse bender being provided between said upstream roller-tensioner and said central roller-tensioner and a downstream reverse bender being provided between said central roller-tensioner and said downstream roller-tensioner, each of said reverse benders including a plurality of succeeding and parallel rollers defining a sinusiodal path for said strip.

Abstract

A metal strip is passed continuously through three succeeding roller-tensioning devices. Between the upstream and central tensioning device the strip is elongated by between 0.5 and 1.3 percent so as to descale this strip. Between the central tensioning device and the downstream tensioning device the strip is elongated by between 2 and 2.5 percent so as to level the strip and prevent end bowing thereof.

Description

United States Patent [1 1 [111 3,924,428
Noe [4 Dec. 9, 1975 METHOD OF AND APPARATUS FOR [56] References Cited DESCALING AND LEVELING A METAL I UNITED STATES PATENTS STRIP 2,163,504 6/1959 Thomas.... 29/81 A [75] Inventor: Oskar No, Mulheim (Ruhr), 3,261,191 7/1966 Wasson 72/161 Germany 3,559,431 2/1971 Noe et a1. 72/8 3,626,735 12/1971 Lebourg et a]. 72/205 X [73] Assrgnee: Firma BWG Bergwerkund @lzwerkMaschinenbau GmbH, Primary Examiner-Milton S. Mehr Dulsburg, Germany Attorney, Agent, or Firm1(arl F. Ross; Herbert 22 Filed: Oct. 7, 1974 'Dubno [21] Appl. No.: 512,604 [57] ABSTRACT A metal strip is passed continuously through three [30] Forelgn Apphcatlon Pnonty Dam succeeding roller-tensioning devices. Between the up- Oct. 8, 1973 Germany 2350503 stream and central tensioning device the strip is elongated by between 0.5 and 1.3 percent so as to descale [52] US. Cl. 72/40; 29/81 A; 72/ 161; this strip. Between the central tensioning device and 3; 6 /3 P the downstream tensioning device the strip is elon- [51] Int. C1. B21B 45/06; B21D 1/04 gated by between 2 and 2.5 percent so as to le el th [58] Field of Search 72/39, 40, 205, 161, 160, strip and prevent end bowing thereof.
4 Claims, 3 Drawing Figures LEVELING 4 O'S'CAL/NG TEQBQ METHOD OF AND APPARATUS FoR DESCALING AND LEVELING A MET L STRIP FIELD OF THE INVENTION The present invention relates to a method of and an apparatus for descaling and leveling a metal strip. More particularly this invention concerns a roller-levelerthrough which a metal strip is passed beforepickling.
BACKGROUND OF THEINVENTION Prior to thepickling of a metal strip, in particular a steel strip, it is necessary toldescale the strip. This;is done in a so-called roller-leveler which stretches the sheet longitudinally to a limited extent while alternately and reverse bending it soas to remove all ;of the scale thereon. At the same time the stripis flattened 2 The apparatus according to the present invention comprises three roller ten'sioners separating two reverse bending devices. The strip is descaledbetween the extreme upstream and the central roller tensioner and is leveled between the central and the extreme downstream roller tensioner.
BRIEF DESCRIPTION OF THE DRAWING of operation of the system according to the present in- Experiments have shown that the amount of elongation necessary to descale the strip adequately does not eliminate lateral bowing, that is a deformation of the strip in its own plane toward one side caused by hotworking of the strip. This lateral bowing occurs at the ends of the strip most often so that it is necessary to cut off these ends before the strip can be further processed, as it is impossible to pass the strip through conventional treatment apparatus when it is bowed in this manner.
It has been suggested that this lateral bowing can be eliminated by stretching the strip longitudinally to a relatively large extent. At this high degree of stretch however the descaling is usually insufficient so that the known systems usually employ a degree of stretch that is a middle ground between the two levels, so that the descaling is usually inadequate while the lateral bowing is also inusfficiently suppressed.
OBJECTS OF THE INVENTION It is therefore an object of the present invention to provide an improved method of an apparatus treating a metal strip.
Another object is the provision of improved system for descaling and leveling a metal strip.
Yet another object is to provide such an apparatus which in one simple operation both effectively descales the strip and leveling it perfectly, thereby eliminating any lateral bowing at the ends thereof.
SUMMARY OF THE INVENTION These objects are attained accordingto the present invention in a system wherein the strip is passed through a pair of succeeding stretching assemblies. In the upstream assembly the strip is subjected to a relatively low degree of longitudinal elongation, equal to the maximum-descaling stretch (MDS). At the downstream assembly the extent of stretch is considerably greater so as to completely eliminate lateral bowing of the strip. Thus in accordance with the present invention the strip in a single pass is both completely descaled and perfectly leveled, both of these operations being carried out at levels which correspond to the ideal stretch for that operation.
In accordance with the present invention the maximum-descaling stretch in the upstream device is between 0.5 percent and 1.3 percent for removal of scale on the strip.
In accordance with yet another feature of this invention the extent of stretch in the downward stream assembly serving to level the strip is greater than 2 percent, advantageously between 2 and 2.5 percent.
vention.
' SPECIFIC DissCRIPIIoN As shown in FIG. 1 a steel strip 1 is passed in a direction 8 through three succeeding roller- tensioners 2a, 2b, and 20 each having two respective driven tension rollers 3a, 3b, and 3c. Between the upstream roller assembly 2a and the central roller assembly 2b there is provided a reverse-bending device 4 having three reversing rollers 9 much as described in my US. Pat. No. 3,777,532 issued on Dec. 11, 1973. Idler rollers 5 are employed to either side of this reverse bender 4 for proper feeding of the strip 1.
A similar reverse bender 4" having rollers 9" is provided between the central tensioning assembly 2b and the downstream tensioning assembly 20. After exiting from the downstream assembly 20 the strip 1 is pickled.
It has been found that a maximum amount of g/m of scales is removed as illustrated in FIG. 2 when the upstream assembly 2a and the central assembly 2b are so driven as to elongate the strip 1 by an extent equal to the maximum-descaling stretch (MDS) of between 0.5 percent and 1.3 percent. Thus the drive motors 10a and 10b for the assemblies 2a and 2b are so controlled that they stretch the strip between these assemblies by approximately 0.8 percent.
Similarly as shown in FIG. 3 it has been found that the lateral deflection h in mm/m of the strip 1 is reduced greatly when the strip 1 is stretched greater than 2 percent. Between 2 and 2.5 percent has been found advantageous. To this end the drive motor of the assembly 2c is driven at a rate relative to the drive speed of the motor 10b of the assembly 2b to stretch the strip 1 between these two assemblies 2b and 2c by an extent equal to between 2 percent and 3 percent.
Thus the band section 6 between the upstream assembly 2a and second assembly 2b is subjected to a longitudinal tension of approximately 10 tons while the ;tension on the section 7 between the assembly 2b and the assembly 20 is equal to approximately 20 tons.
The system and apparatus according to the present invention is equally usable with nonferrous metal sheets. It is also possible to provide in the system according to the present invention various metal working machines between the rolling-tensioning assemblies 2a 20. Four such assemblies could also be provided as could only two to carry out the present invention.
I claim:
1. A method of treating a metal strip comprising the steps of:
longitudinally stretching said strip to a relatively small extent between 0.5 and 1.3 percent corre- 3 sponding to maximum-descaling stretch while reverse bending the strip to remove scale from the strip; thereafter longitudinally stretching said strip to a relatively large extent sufficient'to level said strip; and
pickling said strip after leveling same. 2. The method defined in claim 1 wherein said strip is leveled by stretching more than 2 percent.
3. An apparatus for treating a metal strip and comprising:
descaling means for longitudinally stretching said strip to a relatively small extent between 0.5 and 1.3 percent to remove scale therefrom; reverse bending means for reverse bending said strip simultaneously with the longitudinal stretching thereof by said descaling means;
4 leveling means downstream from said descaling means for stretching said strip to a relatively large extent sufficient to level said strip; and
means for pickling said strip downstream of said levcling means.
4. The apparatus defined in claim 3 wherein said descaling means includes an upstream roller-tensioner, said leveling means includes a downstream roller-tensioner, and said apparatus includes a central roller tensioner between said upstream and downstream roller tensioners, an upstream reverse bender being provided between said upstream roller-tensioner and said central roller-tensioner and a downstream reverse bender being provided between said central roller-tensioner and said downstream roller-tensioner, each of said reverse benders including a plurality of succeeding and parallel rollers defining a sinusiodal path for said strip.

Claims (4)

1. A method of treating a metal strip comprising the steps of: longitudinally stretching said strip to a relatively small extent between 0.5 and 1.3 percent corresponding to maximumdescaling stretch while reverse bending the strip to remove scale from the strip; thereafter longitudinally stretching said strip to a relatively large extent sufficient to level said strip; and pickling said strip after leveling same.
2. The method defined in claim 1 wherein said strip is leveled by stretching more than 2 percent.
3. An apparatus for treating a metal strip and comprising: descaling means for longitudinally stretching said strip to a relatively small extent between 0.5 and 1.3 percent to remove scale therefrom; reverse bending means for reverse bending said strip simultaneously with the longitudinal stretching thereof by said descaling means; leveling means downstream from said descaling means for stretching said strip to a relatively large extent sufficient to level said strip; and means for pickling said strip downstream of said leveling means.
4. The apparatus defined in claim 3 wherein said descaling means includes an upstream roller-tensioner, said leveling means includes a downstream roller-tensioner, and said apparatus includes a central roller tensioner between said upstream and downstream roller tensioners, an upstream reverse bender being provided between said upstream roller-tensioner and said central roller-tensioner and a downstream reverse bender being provided between said central roller-tensioner and said downstream roller-tensioner, each of said reverse benders including a plurality of succeeding and parallel rollers defining a sinusiodal path for said strip.
US512604A 1973-10-08 1974-10-07 Method of and apparatus for descaling and leveling a metal strip Expired - Lifetime US3924428A (en)

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DE2350503A DE2350503B1 (en) 1973-10-08 1973-10-08 Method and device for descaling and leveling sheet metal strips

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BE (1) BE818284A (en)
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FR (1) FR2246321B1 (en)
GB (1) GB1449580A (en)
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Cited By (18)

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US4171632A (en) * 1977-02-18 1979-10-23 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gesellschaft Mit Beschrankter Haftung Method of and apparatus for hot-rolling a thin metal sheet
DE2942270A1 (en) * 1979-10-19 1981-04-30 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Descaling plant for hot rolled metal sheet or strip - includes stretch:bending machine for breaking the scale, and water nozzles for blast cleaning
US4457149A (en) * 1981-03-26 1984-07-03 Veest-Alpine Aktiengesellschaft Apparatus for producing coils of metal strip
US4539830A (en) * 1982-09-15 1985-09-10 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh System for making thin metal strip
US4819470A (en) * 1985-04-20 1989-04-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method for continuously straightening thin metal strips
EP0470512A2 (en) * 1990-08-04 1992-02-12 SUNDWIGER EISENHÜTTE MASCHINENFABRIK GmbH & CO. Method of dressing metal bands passing through
US5174822A (en) * 1991-01-03 1992-12-29 National Steel Corporation Steel strip annealing and coating apparatus
US5219113A (en) * 1991-07-26 1993-06-15 Bwg Berwerk-Und Walzwerk-Maschinenbau Gmbh Method and arrangement for stretch bending of metal strip
US5863347A (en) * 1996-02-08 1999-01-26 Sumitomo Heavy Industries, Ltd. Pickling method of metal plate
US6205830B1 (en) * 2000-02-24 2001-03-27 The Material Works, Ltd. Method and apparatus for processing sheet metal
US6240762B1 (en) * 1999-02-15 2001-06-05 Sumitomo Heavy Industries, Ltd. Method of leveling strips and leveling equipment of strips
WO2003039776A1 (en) * 2001-11-09 2003-05-15 Sms Demag Aktiengesellschaft Method and device for drawing-bending-planishing metal strips, in particular hot- or cold-rolled strips
US20040020258A1 (en) * 2000-08-24 2004-02-05 Holger Behrens Method and device for tension levelling a cold-rolled strip and regulating the degree of levelling
US20040020021A1 (en) * 2002-08-02 2004-02-05 Rockford Manufacturing Group, Inc. Quick set up wire descaler
US6732561B2 (en) 2002-09-23 2004-05-11 The Material Works, Ltd. Method and apparatus for leveling and conditioning sheet metal
US20040194804A1 (en) * 2003-04-07 2004-10-07 Kevin Voges Method of removing scale and inhibiting oxidation in processed sheet metal
US6814089B1 (en) 2003-06-03 2004-11-09 The Material Works, Ltd. Conditioning liquid cleaning and recycling system for sheet metal conditioning apparatus
US20070044531A1 (en) * 2005-08-31 2007-03-01 Red Bud Industries, Inc. Method and apparatus for conditioning sheet metal

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JPS5299931A (en) * 1976-02-17 1977-08-22 Nisshin Steel Co Ltd Method of preventing generation of bright starsslike scars on surface of stainless steel plate
JPS5396927A (en) * 1977-02-04 1978-08-24 Ishikawajima Harima Heavy Ind Co Ltd Treating method of stainless steel surface
JPS53118227A (en) * 1977-03-25 1978-10-16 Hitachi Ltd Apparatus for removing scale from band steel
JPS5810734Y2 (en) * 1978-06-21 1983-02-28 小糸工業株式会社 Traffic safety sign device
JPS5686602A (en) * 1979-12-14 1981-07-14 Ishikawajima Harima Heavy Ind Co Ltd Rolling plant
JPS56127777A (en) * 1980-03-12 1981-10-06 Nippon Kokan Kk <Nkk> Descaling method for steel member
DE3203581A1 (en) * 1982-02-03 1983-08-11 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg METHOD AND DEVICE FOR PRODUCING METAL STRIP FROM WARM STRIP, ESPECIALLY WARM BROAD STRIP
KR900007072B1 (en) * 1985-03-15 1990-09-28 신닛뽄 세이데쓰 가부시끼가이샤 Method and apparatus for manufacturing coldrolled steel strip
JPS6261714A (en) * 1985-09-10 1987-03-18 Sumitomo Metal Ind Ltd Descaling method for hot rolling steel strip
DE3912676A1 (en) * 1989-04-18 1990-10-25 Bwg Bergwerk Walzwerk METHOD AND DEVICE FOR CONTINUOUSLY REACHING THIN BANDS, ESPECIALLY METAL BANDS
FR2740061B1 (en) * 1995-10-19 1997-11-28 Ugine Sa PROCESS FOR THE CONTINUOUS DEVELOPMENT OF A STRIP OF LAMINATED SHEET OF STAINLESS STEEL HAVING AN IMPROVED SURFACE CONDITION
DE19749466C1 (en) * 1997-11-08 1998-12-24 Bwg Bergwerk Walzwerk Production of rolled or cast metal strip with descaled surface, especially strip consisting of special steel and titanium alloys
DE102012103366A1 (en) 2012-04-18 2013-10-24 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Method and apparatus for crushing a scale-damaged metal strip

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171632A (en) * 1977-02-18 1979-10-23 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gesellschaft Mit Beschrankter Haftung Method of and apparatus for hot-rolling a thin metal sheet
DE2942270A1 (en) * 1979-10-19 1981-04-30 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Descaling plant for hot rolled metal sheet or strip - includes stretch:bending machine for breaking the scale, and water nozzles for blast cleaning
US4457149A (en) * 1981-03-26 1984-07-03 Veest-Alpine Aktiengesellschaft Apparatus for producing coils of metal strip
US4539830A (en) * 1982-09-15 1985-09-10 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh System for making thin metal strip
US4819470A (en) * 1985-04-20 1989-04-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method for continuously straightening thin metal strips
EP0470512A3 (en) * 1990-08-04 1992-04-08 Sundwiger Eisenhuette Maschinenfabrik Gmbh & Co. Method of dressing metal bands passing through
EP0470512A2 (en) * 1990-08-04 1992-02-12 SUNDWIGER EISENHÜTTE MASCHINENFABRIK GmbH &amp; CO. Method of dressing metal bands passing through
US5161400A (en) * 1990-08-04 1992-11-10 Sundwiger Eisenhutte Maschinenfabrik Process for levelling continuously moving metal strips
US5174822A (en) * 1991-01-03 1992-12-29 National Steel Corporation Steel strip annealing and coating apparatus
US5219113A (en) * 1991-07-26 1993-06-15 Bwg Berwerk-Und Walzwerk-Maschinenbau Gmbh Method and arrangement for stretch bending of metal strip
US5863347A (en) * 1996-02-08 1999-01-26 Sumitomo Heavy Industries, Ltd. Pickling method of metal plate
US6240762B1 (en) * 1999-02-15 2001-06-05 Sumitomo Heavy Industries, Ltd. Method of leveling strips and leveling equipment of strips
US6205830B1 (en) * 2000-02-24 2001-03-27 The Material Works, Ltd. Method and apparatus for processing sheet metal
US20040020258A1 (en) * 2000-08-24 2004-02-05 Holger Behrens Method and device for tension levelling a cold-rolled strip and regulating the degree of levelling
US6925845B2 (en) * 2000-08-24 2005-08-09 Sms Demag Aktiengesellschaft Method and device for tension leveling a cold-rolled strip and regulating the degree of leveling
WO2003039776A1 (en) * 2001-11-09 2003-05-15 Sms Demag Aktiengesellschaft Method and device for drawing-bending-planishing metal strips, in particular hot- or cold-rolled strips
US20040020021A1 (en) * 2002-08-02 2004-02-05 Rockford Manufacturing Group, Inc. Quick set up wire descaler
US6694584B1 (en) * 2002-08-02 2004-02-24 Rockford Manufacturing Group, Inc. Quick set up wire descaler
US6732561B2 (en) 2002-09-23 2004-05-11 The Material Works, Ltd. Method and apparatus for leveling and conditioning sheet metal
US20050132551A1 (en) * 2003-04-07 2005-06-23 Voges Kevin C. Method of removing scale and inhibiting oxidation and pre-painting sheet metal
US20050016566A1 (en) * 2003-04-07 2005-01-27 Kevin Voges Method of removing scale and inhibiting oxidation in processed sheet metal
US6814815B2 (en) 2003-04-07 2004-11-09 The Material Works, Ltd. Method of removing scale and inhibiting oxidation in processed sheet metal
US20050136184A1 (en) * 2003-04-07 2005-06-23 Voges Kevin C. Method of removing scale and inhibiting oxidation and galvanizing sheet metal
US20040194804A1 (en) * 2003-04-07 2004-10-07 Kevin Voges Method of removing scale and inhibiting oxidation in processed sheet metal
US20050199266A1 (en) * 2003-04-07 2005-09-15 Voges Kevin C. Method of removing scale and inhibiting oxidation and cold rolling sheet metal
US7081167B2 (en) 2003-04-07 2006-07-25 The Material Works, Ltd. Method of removing scale and inhibiting oxidation and galvanizing sheet metal
US7081169B2 (en) 2003-04-07 2006-07-25 The Material Works, Ltd. Method of removing scale and inhibiting oxidation and cold rolling sheet metal
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DE2350503B1 (en) 1975-01-23
ZA743101B (en) 1975-05-28
GB1449580A (en) 1976-09-15
JPS564631B2 (en) 1981-01-31
FR2246321B1 (en) 1977-03-04
FR2246321A1 (en) 1975-05-02
JPS5113332A (en) 1976-02-02
BE818284A (en) 1974-11-18
IT1018299B (en) 1977-09-30

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