EP0695808B1 - Procédé pour la fabrication de bandes métalliques laminées à froid, en particulier de bandes en acier inoxydable et en alliage de titane - Google Patents

Procédé pour la fabrication de bandes métalliques laminées à froid, en particulier de bandes en acier inoxydable et en alliage de titane Download PDF

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Publication number
EP0695808B1
EP0695808B1 EP95106192A EP95106192A EP0695808B1 EP 0695808 B1 EP0695808 B1 EP 0695808B1 EP 95106192 A EP95106192 A EP 95106192A EP 95106192 A EP95106192 A EP 95106192A EP 0695808 B1 EP0695808 B1 EP 0695808B1
Authority
EP
European Patent Office
Prior art keywords
strip
descaling
brush
cold
pickling
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.)
Revoked
Application number
EP95106192A
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German (de)
English (en)
Other versions
EP0695808A1 (fr
Inventor
Rolf Dipl.-Ing Noé
Andreas Dr. mot. Dipl.-Ing. Noé
Dieter Dipl.-Ing. Baukloh
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
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
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Application filed by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of EP0695808A1 publication Critical patent/EP0695808A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • 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
    • B21B2001/228—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 skin pass rolling or temper rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • 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
    • Y10T29/4533—Fluid impingement
    • Y10T29/4544—Liquid jet
    • 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
    • Y10T29/4567—Brush type

Definitions

  • the invention relates to a method for producing cold rolled steel strips made of stainless steel and Metal bands, in particular made of titanium alloys.
  • Hot-rolled steel strips or hot strips made of stainless steel Steels or titanium alloys are proportionate to one hard to remove scale layer, solidify strong and regularly show an inhomogeneous Belt surface.
  • such steel strips annealed regularly first.
  • the annealed steel strips then because of the hard to remove scale layer descaled before they are stained.
  • the beam descaling leads to roughening and homogenization of the Belt surface.
  • the glow, beam descaling and pickling takes place in a separate treatment line.
  • the treated like this Steel strip is wound up into a coil and in a separate treatment line fed to a cold rolling mill.
  • the strip thickness is reduced to desired final thickness reduced.
  • the belt surface is smoothed and condensed.
  • the hot strip is Cold rolled without pretreatment and annealed after cold rolling and stained.
  • an increased surface roughness can be accepted, because the layer of scale, which is difficult to remove, as it were is rolled into the strip surface, so in a continuous Treatment line pretreated hot strip must then in a specially designed cold rolling process Gauge blocks are finish-rolled (see US Pat. No. 5,197,179).
  • DE-C-12 56 102 describes a preparation method hot rolled carbon steel strip for subsequent cold forming by descaling in one of at least two Operations existing blasting process become known. This blasting process is done using a rough one Steel scrap for the first and a fine steel gravel for the second operation as blasting media. Consequently only the descaling of a hot strip is described, whereby with a subsequent deformation of the carbon steel strip by cold rolling the harmful effects of Dirt layer on the rolling stock should be avoided.
  • DE-A-29 13 664 is a method for manufacturing of cold strip through cold rolling of hot strip, in which the scaled hot strip with a such pass reduction is cold rolled that along the two Edges more tinder is broken and stripped than in Middle area of the tape. In this way you want to achieve that the scale layer thickness in the different areas the bandwidth becomes substantially the same. In connection this is where the broken scale comes off the strip surface removed by mechanical cleaning. Here there is the danger that tinder in the Surface of the cold strip is rolled. Such leads on the one hand damage to the surface of the cold strip, on the other hand, a bare can be done in this way or create a matt surface. This also applies if the well-known high pressure mill stand for the pass acceptance a jet blowing unit or hydraulic sprayer downstream to completely remove the surface scale is and only afterwards the cold strip in in a subsequent cold strip mill to final size becomes.
  • JP-A-03 027 811 is concerned with a polishing effect to achieve as pretreatment for a cold rolling process, namely by a cast steel band in the way of Descaling with an abrasive grain.
  • the treatment with the abrasive grain should take place an otherwise usual pickling for rustproof Steel strips lead to an improved surface quality.
  • JP-A-03 158 483 an already cold-rolled passes through Steel band from stainless steel an annealing furnace, then a cooling zone and then abrasive brushes to finally to be fed a stain. This too surface improvement is to be achieved. Accordingly finds a post-treatment of the cold-rolled Steel strip held in a separate treatment line.
  • the invention has for its object to provide a method whereupon cold-rolled steel strips made of rustproof Steel and metal strips, in particular made of titanium alloys, in a time, energy and personnel saving way can be produced with an extremely smooth surface, the surface depending on what is used Material is blank or matt.
  • a device particularly suitable for carrying out this method be created.
  • the hot strip or cast Steel strip or a metal strip after beam descaling sanded and / or ultrasonically cleaned and, if necessary, subsequently be beamed again.
  • the hot strip or cast Steel strip or a metal strip before beam descaling is brushed and / or ultrasonically cleaned. While the beam descaling for a descaled homogeneous Belt surface ensures, results from the grinding brushes a descaled band surface with deep cleaning, whereby however, longitudinal scoring is not excluded is.
  • Hot strip or cast steel strip or another Clean metal band in an ultrasonic bath there is also the possibility that Hot strip or cast steel strip or another Clean metal band in an ultrasonic bath.
  • Ultrasonic cleaning can also be done after beam descaling or grinding brushes to achieve a fine cleaning.
  • the invention does not exclude that between the beam descaling and, if necessary, grinding brushes and / or ultrasonic cleaning and the finish cold rolling Chemical pickling takes place to improve the surface finish further optimize.
  • the scale becomes grinding brushes and / or ultrasonic cleaning mechanically sufficiently removed. Beyond that at the same time also irregularities in the appearance of the hot rolled strip surface removed. That largely Descaled steel band, now homogeneous in its surface then runs through one or more cold rolling stands, in which the strip thickness is reduced by up to 80% becomes.
  • the steel strip is given a cold-rolled structure and is strongly solidified.
  • the belt surface is compacted and smoothed.
  • the cold-rolled steel strip or metal strip is used regularly after annealing cooled by air and / or by means of Water quenched.
  • the steel band or Metal strip between cooling and pickling Stretch bending straightening and / or beam descaling and / or Pre-descaled brushes and / or ultrasonic cleaning, to support the chemical pickling process.
  • Abrasive brushes are also used with washing brushes conceivable.
  • the abrasive brush also a belt treatment with a descaling roller (HMD roll) or with a sanding fleece roll conceivable.
  • Ultrasonic cleaning can be done in an ultrasonic bath respectively.
  • the steel strip is scale-free and has an extremely smooth surface, which in Depending on the material properties, bare or matt can be.
  • the surface of the strip can be tempered or re-rolled compressed again and smoothed further, whereby this skin pass rolling or finish rolling is only a surface finish for those that have already been cold-rolled to their final dimensions Steel band or metal band is.
  • a subsequent Stretch bending straightening or train stretching can be done in the same Treatment line also the flatness of the steel strip or Further improve the metal strip compared to skin pass rolling.
  • stretch bending straightening, the Radial descaling, if necessary, the grinding brushes and / or Ultrasonic cleaning, cold rolling, annealing, cooling, pre-descaling, Pickling and re-rolling or skin-passaging in the single continuous treatment line will.
  • the invention also relates to a treatment line for Manufacture of cold-rolled steel strips from rustproof Steel and metal strips in the course of a continuous Pass, in particular for carrying out the claimed Method, with at least one beam descaling device and if necessary a grinding brush device, at least one of the beam descaling device and / or Downstream of the grinding brush device in the direction of belt travel Cold rolling mill, one downstream of the cold rolling mill Glow, a cooling device downstream of the glow, a pickle downstream of the cooling device and with an unwinder and a winder, with all the aggregates in one Treatment line are arranged. Furthermore, the beam descaling device and / or grinding brush device a stretch bending device upstream in the direction of strip travel be.
  • a cooling device for air cooling and / or Water cooling or to deter the concerned Steel or metal strip arranged.
  • Between the cooler and the pickle can be another beam descaling device and / or grinding brush device and / or ultrasonic cleaning device.
  • a skin pass mill is preferably located behind the pickling line or rolling mill stand provided.
  • This strip treatment line has an unwinder 1 for hot strip 2.
  • This unwinder 1 can itself in the direction of travel of a stretch straightening device 3 Connect to break up the scale.
  • This is followed by one absolutely necessary beam descaling device 4 which a grinding brush device 5 can follow.
  • Mandatory one or more cold rolling stands are also required 6 and a glow 7, with a subsequent one Cooling device 8, which in turn is not shown
  • Stretch bending device for scaling - also combined with grinding brushes - and another beam descaling device 9 can connect.
  • which in turn can follow abrasive brush or wash brush device 10, which precedes the further mandatory stain 11 are.
  • the pickle 11 can consist of several pickling baths, which brushes are before and after. Possibly the stain is followed by a skin pass mill 12 and that Skin pass rolling mill 12 a stretch bending straightening or tension stretching device 13 before the treated steel strip of a winder 14 is supplied.

Claims (14)

  1. Procédé de fabrication de bandes d'acier laminées à froid en acier inoxydable et de bandes métalliques dans des alliages de titane sur une seule ligne de traitement en une passe continue, selon lequel
    la bande chaude (2) ou la bande d'acier coulée est décalaminée au jet ainsi qu'éventuellement brossée polie et/ou nettoyée aux ultrasons, et selon lequel
    la bande chaude (2) est laminée à froid par réduction de son épaisseur jusqu'à 80 % de la cote finale puis recuite, refroidie après recuit et ensuite décapée.
  2. Procédé selon la revendication 1, caractérisé en ce que la bande chaude est brossée polie et/ou nettoyée aux ultrasons après le décalaminage au jet.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la bande chaude est à nouveau décalaminée au jet après le décalaminage au jet et le brossage poli.
  4. Procédé selon la revendication 1, caractérisé en ce que la bande chaude est brossée polie et/ou nettoyée aux ultrasons avant le décalaminage au jet.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la bande chaude est dressée par traction et flexion avant le décalaminage au jet et/ou le brossage poli et/ou le nettoyage aux ultrasons.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la bande d'acier ou la bande métallique laminée à froid est refroidie à l'air et/ou étirée à l'eau.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que la bande d'acier ou la bande métallique est pré-décalaminée avant le refroidissement et le décapage par dressage par traction et flexion et/ou le décalaminage au jet et/ou le brossage poli et/ou le nettoyage aux ultrasons.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que la bande d'acier ou la bande métallique est soumise à un laminage complémentaire ou est dressée après le décapage.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le dressage par traction et flexion, le décalaminage au jet, éventuellement le brossage poli et/ou le nettoyage aux ultrasons, le laminage à froid, le recuit, le refroidissement, le pré-décalaminage, le décapage et le laminage complémentaire ou le dressage sont réalisés dans la seule ligne de traitement continue.
  10. Ligne de traitement pour la fabrication de bandes d'acier laminées à froid en acier inoxydable et de bandes métalliques dans des alliages de titane au cours d'une passe continue pour la mise en oeuvre du procédé selon l'une des revendications 1 à 9, comportant au moins un dispositif de décalaminage au jet (4) ainsi qu'éventuellement un dispositif de brossage poli et/ou un dispositif de nettoyage aux ultrasons, au moins une cage de laminoir à froid (6) montée en aval, dans le sens de passage de la bande, du dispositif de décalaminage au jet (4) et/ou du dispositif de brossage poli et/ou du dispositif de nettoyage aux ultrasons, un dispositif de recuit (7) en aval de la cage de laminoir à froid (6), un dispositif de refroidissement (8) en aval du dispositif de recuit (7), un dispositif de décapage (11) en aval du dispositif de refroidissement (8) et comportant un dispositif de dévidage (1) et un dispositif de bobinage (14), ainsi qu'éventuellement un dispositif de pré-décalaminage et un dispositif pour le laminage de dressage ou laminage complémentaire, tous les groupes étant disposés dans une seule ligne de traitement.
  11. Ligne de traitement selon la revendication 10, caractérisée en ce qu'un dispositif de traction et flexion est monté en amont du dispositif de décalaminage au jet (4) et/ou du dispositif de brossage poli et/ou du dispositif de nettoyage aux ultrasons.
  12. Ligne de traitement selon la revendication 10 ou 11, caractérisée en ce que le dispositif de refroidissement (8), monté entre le dispositif de recuit (6) et le dispositif de décapage (11), est aménagé pour le refroidissement à l'air et/ou le refroidissement à l'eau.
  13. Ligne de traitement selon l'une des revendications 10 à 12, caractérisée en ce qu'entre le dispositif de refroidissement (8) et le dispositif de décapage (11) est monté un autre dispositif de décalaminage au jet (9) et/ou dispositif de brossage poli (10) et/ou dispositif de nettoyage aux ultrasons.
  14. Ligne de traitement selon l'une des revendications 10 à 13, caractérisée en ce que derrière le dispositif de décapage (11) est monté une cage de laminage complémentaire ou cage de laminage de dressage (12).
EP95106192A 1994-07-07 1995-04-26 Procédé pour la fabrication de bandes métalliques laminées à froid, en particulier de bandes en acier inoxydable et en alliage de titane Revoked EP0695808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4423664A DE4423664A1 (de) 1994-07-07 1994-07-07 Verfahren zum Herstellen von kaltgewalzten Stahlbändern aus nichtrostendem Stahl und Metallbändern, insbesondere aus Titanlegierungen
DE4423664 1994-07-07

Publications (2)

Publication Number Publication Date
EP0695808A1 EP0695808A1 (fr) 1996-02-07
EP0695808B1 true EP0695808B1 (fr) 1998-08-26

Family

ID=6522379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106192A Revoked EP0695808B1 (fr) 1994-07-07 1995-04-26 Procédé pour la fabrication de bandes métalliques laminées à froid, en particulier de bandes en acier inoxydable et en alliage de titane

Country Status (18)

Country Link
US (1) US5554235A (fr)
EP (1) EP0695808B1 (fr)
JP (1) JPH08164412A (fr)
KR (1) KR100313619B1 (fr)
CN (1) CN1061570C (fr)
AT (1) ATE170225T1 (fr)
AU (1) AU688042B2 (fr)
BR (1) BR9503097A (fr)
CA (1) CA2150396C (fr)
DE (2) DE4423664A1 (fr)
ES (1) ES2121251T3 (fr)
FI (1) FI953286A (fr)
MY (1) MY118448A (fr)
RU (1) RU2138341C1 (fr)
TR (1) TR199500824A2 (fr)
TW (1) TW303313B (fr)
UA (1) UA40606C2 (fr)
ZA (1) ZA954065B (fr)

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FR2775205B1 (fr) * 1998-02-25 2000-03-24 Usinor Installation de fabrication de bandes d'acier inoxydable laminees a froid
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CN1122264A (zh) 1996-05-15
KR960003830A (ko) 1996-02-23
FI953286A0 (fi) 1995-07-03
TW303313B (fr) 1997-04-21
DE4423664A1 (de) 1996-05-15
RU2138341C1 (ru) 1999-09-27
EP0695808A1 (fr) 1996-02-07
AU688042B2 (en) 1998-03-05
CA2150396C (fr) 2001-11-20
TR199500824A2 (tr) 1996-06-21
ZA954065B (en) 1996-01-19
MY118448A (en) 2004-11-30
ATE170225T1 (de) 1998-09-15
BR9503097A (pt) 1997-09-23
JPH08164412A (ja) 1996-06-25
CN1061570C (zh) 2001-02-07
RU95110888A (ru) 1997-05-20
DE59503319D1 (de) 1998-10-01
FI953286A (fi) 1996-01-08
KR100313619B1 (ko) 2001-12-28
US5554235A (en) 1996-09-10
ES2121251T3 (es) 1998-11-16
CA2150396A1 (fr) 1996-01-08
UA40606C2 (uk) 2001-08-15

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