EP1005926A2 - Verfahren und Vorrichtung zum Reinigen eines Metallbandes - Google Patents

Verfahren und Vorrichtung zum Reinigen eines Metallbandes Download PDF

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Publication number
EP1005926A2
EP1005926A2 EP99122944A EP99122944A EP1005926A2 EP 1005926 A2 EP1005926 A2 EP 1005926A2 EP 99122944 A EP99122944 A EP 99122944A EP 99122944 A EP99122944 A EP 99122944A EP 1005926 A2 EP1005926 A2 EP 1005926A2
Authority
EP
European Patent Office
Prior art keywords
strip
grinding
cleaned
grinder
microinches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99122944A
Other languages
English (en)
French (fr)
Other versions
EP1005926A3 (de
Inventor
Stephen L. Feldbauer
Robert Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danieli Wean a division of Danieli Corp
Danieli Corp
Original Assignee
Danieli Wean a division of Danieli Corp
Danieli Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Danieli Wean a division of Danieli Corp, Danieli Corp filed Critical Danieli Wean a division of Danieli Corp
Publication of EP1005926A2 publication Critical patent/EP1005926A2/de
Publication of EP1005926A3 publication Critical patent/EP1005926A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071—Levelling the rolled product
    • 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
    • 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
    • B21B45/02—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 lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0287—Cleaning devices removing solid particles, e.g. dust, rust

Definitions

  • This invention relates to the cleaning of metal strip or plate (hereinafter called “strip”), particularly but not limited to stainless steel strip, whereby adherent oxides are mechanically removed from the surface of the strip to provide a surface finish at least equal to a pickled surface and superior to prior art mechanically cleaned surface without the use of pickling acids.
  • strip metal strip or plate
  • Such devices now known within the industry as “flatteners,” require the strip to be flexed over the flattening rolls and are useful only to remove coil set from the uncoiled strip by bending the strip, by the flattening rolls, uniformly across the strip width. Accordingly, such flatteners are not applicable to leveling high strength steels or heavy gauge steel strip or plate which cannot be so flexed.
  • coiled metal strip as produced in a rolling mill frequently exhibits, in addition to coil set, non-uniform dimensions, out-of flatness and other processing irregularities, such as waves, bubbles, herringbone patterns, and cross-bowing. Waves are produced by elongation of the strip, in the width direction, more than another width direction.
  • edges of the strip are elongated more than the center, waves are produced; if the center is elongated more than the edges of the strip, bubbles or center waves or side waves are formed. If the strip goes into the rolling mill at an angle, a diagonal wave, called a herringbone pattern, is produced. Cross-bowing of the strip results from differential cooling of the strip or by too much crown in the strip. Such dimensional irregularities are not amenable to correction by use of flattener apparatus such as that of the latter patent. Consequently, the surface finish produced by such conventional prior art processes are not acceptable for production of fully mechanically cleaned strip of high surface finish, for example strip which is intended for certain post-processing treatments of the cleaned strip surface.
  • the present invention provides a metal strip uncoiling device followed by a device, such as a rolling mill, a tension leveler or a corrective (roller) leveler, capable of flattening the strip, correcting any strip irregularities, such as waves, bubbles, herringbone patterns and cross-bowing, in addition to coil set, and delivering an acceptable shape to the following cleaning step which includes grinding, brushing and polishing of the strip surface.
  • the cleaning step is followed by a device to tension the strip at a level of tension at least sufficient to provide effective material handling and control during cleaning and thereby to aid in achieving or maintaining a flat strip surface during leveling and cleaning.
  • Fig. 1 shows an uncoiler 1, a strip leveller 2, a cleaner 3 and a tensioning device 4, as well an optional surface conditioning device 5 and material post-processing apparatus 6, and a strip recoiler 7.
  • the essential steps of the invention, levelling and surface cleaning comprise a process and apparatus capable of removing oxides from metal strip efficiently and in a form possessing an acceptable surface finish for post-processing without acid pickling of the strip.
  • strip cleaning as hereinafter described, all of the above-mentioned strip irregularities must be removed so that the strip, ready for cleaning, is substantially uniformly dimensioned and completely flat in order to provide a mechanically cleaned surface of high quality, e.g. equal or superior to pickled strip.
  • Removal of such dimensional irregularities may be achieved by one or another of several types of prior art levelers, i.e. a rolling mill, a tension leveler or a corrective or roller leveler.
  • Fig. 2 shows a prior art rolling mill denoted generally by the numeral 8 having a pair of work rolls 9 and 11 and corresponding upper and lower backup rolls 12 and 13.
  • Guide rolls 14, 16 and 17 aid in guiding a strip 18 through the work rolls of the mill.
  • Such a device reduces the thickness and increases the length of the strip 18 as it passes through the mill, thereby loosening and aiding in the removal of surface oxides.
  • Fig. 3 shows a prior art tension leveler, denoted generally by the numeral 19 having a plurality of stands, e.g. 21 and 22 each of which includes vertically movable upper and lower clusters 23 and 24 of tensioning rolls. Passage of the strip 18 through such a leveler device results in elongation of the strip, again loosening and aiding in the removal of adherent surface oxides as well removing strip irregularities and flattening the strip.
  • Fig. 4 shows a prior art corrective (roller) leveler generally denoted by the numeral 26 having a plurality of upper and lower leveler rolls 27 and 28, respectively, each of which is backed up by a set of corresponding upper and lower backup rolls 29, 31.
  • roller corrective
  • the backup rolls By applying different pressures, through the backup rolls, to different pairs of opposed upper and lower leveler rolls, the latter rolls, or either of them, may be bent resiliently in a plurality of desired configurations as necessary to correct specific types of irregularities of the strip as it passes through this type of leveler.
  • any one of these three types of levelers, the mentioned irregularities, including but not limited to coil set, can be removed from the strip to provide a substantially completely level surface.
  • the cleaning step of the invention comprises three aspects.
  • the strip is ground, e.g. with a suitable grinding disc.
  • a suitable article for this purpose is a "DBX" grinding wheel manufactured by Minnesota Mining and Manufacturing Co. and described in the aforesaid U.S. Patent No.5,273,558.
  • Such devices are in the form of articles, such as discs, incorporating a bonded abrasive composition comprising abrasive particles dispersed throughout and bonded to an elastomeric polyurea matrix formed from the polymerization reaction product of a polyfunctional amine and an isocyanate.
  • the strip is brushed, e.g.
  • a suitable brush for example a 7A medium brush formed of a porous resin matrix and a mineral filler, as produced by Minnesota Mining and Manufacturing Co.
  • a suitable wire brush also may be used.
  • the strip is polished with a suitable abrasive polishing wheel, such as "Scotch-Brite"--a trade-marked product of Minnesota Mining and Manufacturing Co.
  • At least one of these cleaning steps is used and preferably all three are used, and more than one unit of each type of cleaning may be used, depending on the extent and type of initial oxide and the type of final surface which is desired.
  • Conventional pickling processes typically produce strip with a surface roughness of about 60 microinches.
  • the strip mechanically processed in accordance with the present invention has a surface roughness of about 5 microinches in the direction of the grinding lines, and up to about 30 microinches in a direction transverse to the grinding lines--at least a 100% improvement over the prior art.
  • an acid bath and rinse section 5 in the processing line to aid in removal of the ground surface material and to condition the surface to a more preferred condition.
  • Such acid bath and rinse section may be replaced with a rolling device (not shown) to roll the material in order to further enhance the surface of the strip.
  • the strip material may only need to be oiled and recoiled after mechanical grinding, brushing and polishing because all these elements rotate in a counterclockwise direction and tend to throw debris back toward the entry of the strip into the cleaner.
  • a number of other post-processing steps may be utilized between grinding and recoiling, such as, but not limited to, side trimming, shot-blasting, painting, galvanizing and other coating operations.
  • some of such further processing steps could be carried out between the leveling and cleaning steps.
  • the strip may be side-trimmed and/or shot blasted after leveling but before cleaning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
EP99122944A 1998-11-30 1999-11-18 Verfahren und Vorrichtung zum Reinigen eines Metallbandes Withdrawn EP1005926A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20156498A 1998-11-30 1998-11-30
US201564 1998-11-30

Publications (2)

Publication Number Publication Date
EP1005926A2 true EP1005926A2 (de) 2000-06-07
EP1005926A3 EP1005926A3 (de) 2002-07-24

Family

ID=22746336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122944A Withdrawn EP1005926A3 (de) 1998-11-30 1999-11-18 Verfahren und Vorrichtung zum Reinigen eines Metallbandes

Country Status (4)

Country Link
EP (1) EP1005926A3 (de)
JP (1) JP2000158037A (de)
AU (1) AU5956399A (de)
CA (1) CA2290767A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1628784A4 (de) * 2003-04-07 2007-03-14 Material Works Ltd Verfahren zum entfernen von zunder und verhindern von oxidation bei verarbeitetem blech
CN102699054A (zh) * 2010-10-29 2012-10-03 上海龙阳精密复合铜管有限公司 一种铜管外表面氧化皮的清理设备
CN103128112A (zh) * 2012-08-31 2013-06-05 新万鑫（福建）精密薄板有限公司 无酸洗连续通过拉伸平整退火线的冷轧取向硅钢生产方法
US9822422B2 (en) 2009-09-24 2017-11-21 Ati Properties Llc Processes for reducing flatness deviations in alloy articles
CN109434665A (zh) * 2018-12-21 2019-03-08 山东新活新材料科技有限公司 一种打磨抛光装置
CN111112237A (zh) * 2020-01-10 2020-05-08 广东利元亨智能装备股份有限公司 激光清洗设备
CN116727315A (zh) * 2023-08-08 2023-09-12 山东滨海机械设备有限公司 一种热镀锌工艺中表面清洁方法及装置
CN117259482A (zh) * 2023-11-23 2023-12-22 江苏兴虹科技有限公司 一种生箔机铜箔水洗装置以及水洗方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111185426A (zh) * 2020-01-16 2020-05-22 钱丰 一种通信电缆循环往复清洗装置
CN116900826B (zh) * 2023-08-17 2024-12-20 青岛理工大学 一种荷叶-沙漠甲虫仿生砂轮超声振动磨削装置及方法
CN118371476B (zh) * 2024-06-26 2024-11-12 江苏圣欣不锈钢制品有限公司 一种钢丝绳制品去油清洁处理设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335196A (en) * 1940-09-09 1943-11-23 Osborn Mfg Co Metal cleaning
US2759301A (en) * 1953-07-16 1956-08-21 Crucible Steel Co America Method and apparatus for surface grinding metal strip
JP2501137B2 (ja) * 1991-01-09 1996-05-29 新日本製鐵株式会社 表面性状の良好な帯状金属体の処理方法
US5273558A (en) * 1991-08-30 1993-12-28 Minnesota Mining And Manufacturing Company Abrasive composition and articles incorporating same
DE4423664A1 (de) * 1994-07-07 1996-05-15 Bwg Bergwerk Walzwerk Verfahren zum Herstellen von kaltgewalzten Stahlbändern aus nichtrostendem Stahl und Metallbändern, insbesondere aus Titanlegierungen
WO1998047634A1 (en) * 1997-04-24 1998-10-29 Danieli Wean, A Division Of Danieli Corporation Process and apparatus for cleaning metal strip

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1628784A4 (de) * 2003-04-07 2007-03-14 Material Works Ltd Verfahren zum entfernen von zunder und verhindern von oxidation bei verarbeitetem blech
US9822422B2 (en) 2009-09-24 2017-11-21 Ati Properties Llc Processes for reducing flatness deviations in alloy articles
US10260120B2 (en) 2009-09-24 2019-04-16 Ati Properties Llc Processes for reducing flatness deviations in alloy articles
CN102699054A (zh) * 2010-10-29 2012-10-03 上海龙阳精密复合铜管有限公司 一种铜管外表面氧化皮的清理设备
CN103128112A (zh) * 2012-08-31 2013-06-05 新万鑫（福建）精密薄板有限公司 无酸洗连续通过拉伸平整退火线的冷轧取向硅钢生产方法
CN103128112B (zh) * 2012-08-31 2015-05-20 新万鑫（福建）精密薄板有限公司 无酸洗连续通过拉伸平整退火线的冷轧取向硅钢生产方法
CN109434665A (zh) * 2018-12-21 2019-03-08 山东新活新材料科技有限公司 一种打磨抛光装置
CN111112237A (zh) * 2020-01-10 2020-05-08 广东利元亨智能装备股份有限公司 激光清洗设备
CN116727315A (zh) * 2023-08-08 2023-09-12 山东滨海机械设备有限公司 一种热镀锌工艺中表面清洁方法及装置
CN116727315B (zh) * 2023-08-08 2023-10-17 山东滨海机械设备有限公司 一种热镀锌工艺中表面清洁方法及装置
CN117259482A (zh) * 2023-11-23 2023-12-22 江苏兴虹科技有限公司 一种生箔机铜箔水洗装置以及水洗方法
CN117259482B (zh) * 2023-11-23 2024-02-06 江苏兴虹科技有限公司 一种生箔机铜箔水洗装置以及水洗方法

Also Published As

Publication number Publication date
CA2290767A1 (en) 2000-05-30
JP2000158037A (ja) 2000-06-13
AU5956399A (en) 2000-06-01
EP1005926A3 (de) 2002-07-24

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