EP0811081B1 - Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede - Google Patents

Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede Download PDF

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Publication number
EP0811081B1
EP0811081B1 EP96904131A EP96904131A EP0811081B1 EP 0811081 B1 EP0811081 B1 EP 0811081B1 EP 96904131 A EP96904131 A EP 96904131A EP 96904131 A EP96904131 A EP 96904131A EP 0811081 B1 EP0811081 B1 EP 0811081B1
Authority
EP
European Patent Office
Prior art keywords
strip
sheet
less
thickness
steel
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.)
Expired - Lifetime
Application number
EP96904131A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0811081A1 (fr
Inventor
Michel Lespagnol
Jean-François Renard
Patrick Seurin
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0811081A1 publication Critical patent/EP0811081A1/fr
Application granted granted Critical
Publication of EP0811081B1 publication Critical patent/EP0811081B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel 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
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0436—Cold rolling
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0468—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment between cold rolling steps

Definitions

  • the subject of the present invention is a method production of a sheet or strip of steel intended to the realization of a box obtained by stamping-ironing, of the drink box type.
  • the present invention also relates to a sheet or strip of steel intended for making a box obtained by stamping-ironing.
  • This type of boxes generally includes a bottom, a peripheral skirt and a collar to achieve the crimping of a cover, which can be opened easy, and is produced in particular by stamping-ironing from a cup cut from a sheet or a band.
  • the cup first undergoes a relatively severe swaging on a press which conventionally comprises, on the one hand, a fixed punch and a support forming a peripheral blank holder sliding around said punch and on which rests the cup and, on the other hand, a matrix intended to be applied to the cup with force vertically transmitted by an upper slide.
  • the cup with a bottom and an edge formed during the stamping operation is then either calibrated by a slight stamping without the use of a blank holder, either re-stamped with blank holder and then subject to an ironing operation which consists of stretch by means of a drawing machine, by reductions successive, the edge to gradually form the skirt device of the box.
  • the bottom is formed on the drawing machine to give it a determined geometry and the neck of the peripheral skirt is formed according to two techniques, either a matrix shrinking technique or a wheel shrinking technique.
  • the shrinking technique with matrix is to force the cervix into a matrix with a conical inlet profile and a cylindrical outlet profile.
  • a cylindrical piece guides the wall formed at the outlet of the matrix.
  • the force required to allow the deformation metal comes from the thrust applied to the bottom of the box and transmitted axially by its skirt peripheral.
  • the wheel shrinking technique consists in driving the box in rotation which is held between a pusher and a centering ring.
  • the free end of the peripheral skirt is engaged on a mandrel and two moving wheels axially form the neck of the box which gradually emerges from the mandrel while still being held between the pusher and the centering ring.
  • the profile of the neck is obtained by displacements simultaneous wheels, centering ring and the pusher.
  • the box is filled and a cover, for example with opening easy, is crimped on the neck of said box.
  • the sheet or strip is produced by a process in which the slab from continuous casting is hot rolled, then cold rolled to obtain a strip which is subjected to recrystallization annealing at a temperature below Ac1.
  • This process makes it possible to obtain a strip which has a final thickness of around 0.30mm and make from this strip a box whose wall of the peripheral skirt after stamping-ironing has a thickness of about 0.1mm.
  • a decrease in the area of stampability causes difficulties in forming the bottom and is at the origin of the appearance of folds, during the operation stamping.
  • this operation is carried out in sliding a ring on the stretching punch of so that this ring can rest on the free edge of the peripheral skirt of the box.
  • the ring stripping only presses on a few points of said skirt and very often there is a puckering of the skirt during the stripping which requires putting the discarded box.
  • Coarse cementite can cause drilling the wall of the peripheral skirt at the time of formation of the neck and tearing of this metal during of the stretching operation due to hard particles in steel.
  • EPC a process for the manufacture of a steel strip for production by stamping and re-stamping of containers.
  • Steel has composition following weight: C ⁇ 0.006%, If ⁇ 0.02%, 0.15 - 0.35% Mn, S ⁇ 0.015%, P ⁇ 0.015%, N ⁇ 0.006%, 0.02 -0.06% Al, the remainder being iron and residual impurities.
  • the object of the invention is to avoid these drawbacks by proposing a process for making a sheet or a strip intended for the realization of a box obtained by stamping-ironing which reduces the thickness of the walls of the box and therefore to gain weight.
  • the invention also relates to a sheet or steel strip intended for the realization of a box obtained by stamping and ironing, of the beverage can type, characterized in that it is obtained by the process mentioned above.
  • the manufacture of a box, of the drink box type, stamping and ironing involves cutting in a sheet or strip of steel a blank, then at stamp by relatively severe necking on a press this blank to form a cup.
  • the cup comprising a bottom and a edge is calibrated and is subjected to an operation of ironing consisting of stretching, by reductions successive, the edge to gradually form the skirt device of the box.
  • the bottom is then formed to give it the determined geometry and the collar of the peripheral skirt is formed either by a matrix shrinking technique, either by a wheel shrinking technique.
  • the slab is hot rolled into a strip thickness between 1.8 and 2.5mm and preferably between 2 and 2.4mm, then the strip is cold rolled with a reduction rate to bring said strip to a thickness between 0.26 and 0.32mm and subject to recrystallization annealing at a lower temperature to Ac1 and finally cold-rolled with a rate of reduction between 28 and 35% to bring said strip at a thickness between 0.18 and 0.22mm.
  • the recrystallization annealing is an annealing continued.
  • steels A to C being very low carbon steels, that is to say steels whose carbon percentage is less than 0.006% and steels D and E being extra mild steels.
  • steels D and E although satisfying the rolling conditions of the process according to the invention have a coefficient ⁇ C further from C than steels B and C.
  • steel B and steel E have undergone hot rolling, cold rolling, annealing and similar cold rolling.
  • steel E has yield strength and superior tensile strength and above all a ⁇ C much lower and much further from 0.
  • the sheet or strip of steel at very low carbon less than 0.008 and produced by the process according to the invention, that is to say with a hot rolling by which the slab is rolled into a hot sheet or a strip of thickness between 1.8 and 2.5 mm, cold rolling by which the hot sheet or strip is rolled at a reduction rate bringing said strip to a thickness of between 0.26 and 0.32 mm, then a recrystallization annealing at a temperature below Ac1 and finally a re-rolling cold with a reduction rate between 10 and 40%, has a longest yield strength between 350 and 450 MPa for a final thickness about 0.22mm, between 440 and 540 MPa for a thickness final of approximately 0.20mm and between 500 and 600 MPa for a final thickness of about 0.18mm.
  • the sheets or strips according to the invention can also be characterized by the fact that the number of ferrite grains per mm 2 is between 10,000 and 30,000 and preferably between 15,000 and 25,000, which corresponds to a very small grain size .
  • the process of making a sheet according to the invention also makes it possible to keep a quantity determined carbon solution in the sheet.
  • Such a sheet therefore has the characteristic significantly harden during cooking varnish, practiced on the box after its shaping.
  • This feature is very important in the case of the manufacture of boxes obtained by stamping-ironing because the sheet according to the process of the invention has mechanical characteristics adequate to promote its shaping, characteristics mechanical varying little over time.
  • This mechanical behavior of the box is particularly characterized by the turning pressure the dome of the bottom of said box.
  • This turning pressure, pressure limit from which the dome made on the bottom of the box turns around, increases by around 10% after steaming to pass for example, for a type of box given, from 6.3 to 6.9 bars.
  • the method according to the invention for the development of a sheet or strip of steel with very low carbon intended for the realization of a box, drink-box type, obtained by stamping-ironing reduces the thickness of the walls of the box and obtain a weight gain of around 30% on the sheet or the strip, while increasing the drawing area and reducing the rate of horns and the risk of formation of folds when stamping the box.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Revetment (AREA)
  • Road Paving Structures (AREA)
  • Heat Treatment Of Steel (AREA)
EP96904131A 1995-02-24 1996-02-13 Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede Expired - Lifetime EP0811081B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9502208A FR2730942B1 (fr) 1995-02-24 1995-02-24 Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede
FR9502208 1995-02-24
PCT/FR1996/000233 WO1996026295A1 (fr) 1995-02-24 1996-02-13 Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede

Publications (2)

Publication Number Publication Date
EP0811081A1 EP0811081A1 (fr) 1997-12-10
EP0811081B1 true EP0811081B1 (fr) 2001-05-23

Family

ID=9476503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96904131A Expired - Lifetime EP0811081B1 (fr) 1995-02-24 1996-02-13 Procede d'elaboration d'une tole ou d'une bande en acier pour la realisation d'une boite et tole ou bande en acier obtenue par ce procede

Country Status (24)

Country Link
US (1) US6056832A (el)
EP (1) EP0811081B1 (el)
JP (1) JPH11503490A (el)
CN (1) CN1062314C (el)
AT (1) ATE201455T1 (el)
AU (1) AU708839B2 (el)
BR (1) BR9607322A (el)
CZ (1) CZ291913B6 (el)
DE (1) DE69612964T2 (el)
DK (1) DK0811081T3 (el)
DZ (1) DZ1996A1 (el)
ES (1) ES2156615T3 (el)
FR (1) FR2730942B1 (el)
GR (1) GR3036311T3 (el)
HU (1) HU220554B1 (el)
IL (1) IL117174A (el)
MA (1) MA23807A1 (el)
PL (1) PL180290B1 (el)
PT (1) PT811081E (el)
RO (1) RO119236B1 (el)
TN (1) TNSN96032A1 (el)
TW (1) TW340875B (el)
WO (1) WO1996026295A1 (el)
ZA (1) ZA961459B (el)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135645A3 (de) * 2013-03-07 2015-03-26 Thyssenkrupp Steel Europe Ag Verfahren zum erzeugen eines kaltgewalzten stahlflachprodukts für tiefzieh- und abstreckziehanwendungen, stahlflachprodukt und verwendung eines solchen stahlflachprodukts

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2767078B1 (fr) * 1997-08-07 1999-10-22 Lorraine Laminage Procede d'elaboration d'une tole mince en acier a ultra bas carbone pour la realisation de produits emboutis pour emballage et tole mince obtenue
FR2819825B1 (fr) * 2001-01-24 2003-10-31 Imphy Ugine Precision Procede de fabrication d'une bande en alliage fe-ni
DE10117118C1 (de) * 2001-04-06 2002-07-11 Thyssenkrupp Stahl Ag Verfahren zur Herstellung von gut umformfähigem Feinstblech und Verwendung eines Stahls
JP4559918B2 (ja) * 2004-06-18 2010-10-13 新日本製鐵株式会社 加工性に優れたブリキおよびテインフリースチール用鋼板およびその製造方法
JP4164828B2 (ja) * 2004-09-29 2008-10-15 日立金属株式会社 Ｆｅ−Ｎｉ系合金薄板材の製造方法
JP5810714B2 (ja) * 2011-07-29 2015-11-11 Ｊｆｅスチール株式会社 高強度高加工性缶用鋼板およびその製造方法
DE102011056847B4 (de) * 2011-12-22 2014-04-10 Thyssenkrupp Rasselstein Gmbh Stahlblech zur Verwendung als Verpackungsstahl sowie Verfahren zur Herstellung eines Verpackungsstahls
DE102013107506A1 (de) * 2013-07-16 2015-01-22 Thyssenkrupp Rasselstein Gmbh Verfahren zur Passivierung von bandförmigem Schwarzblech

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60262918A (ja) * 1984-06-08 1985-12-26 Kawasaki Steel Corp ストレツチヤ−ストレインの発生しない表面処理原板の製造方法
JP2689149B2 (ja) * 1988-11-19 1997-12-10 新日本製鐵株式会社 耳発生の小さい絞り缶用鋼板の製造方法
JPH03294432A (ja) * 1990-04-13 1991-12-25 Nippon Steel Corp 板取り性が優れた溶接缶用極薄鋼板の製造法
FR2678641B1 (fr) * 1991-07-04 1998-11-20 Lorraine Laminage Acier a emboutissabilite amelioree et procede de fabrication de toles destinees a l'emboutissage.
EP0524162B1 (fr) * 1991-07-17 1998-11-11 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé de fabrication d'une bande mince en acier doux
FR2689907B1 (fr) * 1992-04-13 1994-11-10 Toyo Kohan Co Ltd Procédé de production d'une tôle d'acier formée par recuit continu et tôle produite par ce procédé.
JPH05345924A (ja) * 1992-05-25 1993-12-27 Nippon Steel Corp イヤリング性とフランジ加工性に優れた缶用極薄鋼板の製造法
JPH05345925A (ja) * 1992-05-25 1993-12-27 Nippon Steel Corp フランジ加工性に優れたｄｗｉ缶用極薄鋼板の製造法
US5725697A (en) * 1993-12-24 1998-03-10 Kawasaki Steel Corporation Method of manufacturing cold-rolled can steel sheet having less planar anisotropy and good workability
KR100221349B1 (ko) * 1994-02-17 1999-09-15 에모또 간지 가공성이 우수한 비시효성 캔용 강판의 제조방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014135645A3 (de) * 2013-03-07 2015-03-26 Thyssenkrupp Steel Europe Ag Verfahren zum erzeugen eines kaltgewalzten stahlflachprodukts für tiefzieh- und abstreckziehanwendungen, stahlflachprodukt und verwendung eines solchen stahlflachprodukts
US10184159B2 (en) 2013-03-07 2019-01-22 Thyssenkrupp Steel Europe Ag Method for producing a cold-rolled flat steel product for deep-drawing and ironing applications, flat steel product, and use of a flat steel product of said type

Also Published As

Publication number Publication date
ES2156615T3 (es) 2001-07-01
PL180290B1 (pl) 2001-01-31
GR3036311T3 (en) 2001-10-31
HUP9801208A2 (hu) 1998-08-28
RO119236B1 (ro) 2004-06-30
TW340875B (en) 1998-09-21
HUP9801208A3 (en) 1999-09-28
CN1175978A (zh) 1998-03-11
WO1996026295A1 (fr) 1996-08-29
FR2730942A1 (fr) 1996-08-30
CN1062314C (zh) 2001-02-21
PT811081E (pt) 2001-10-31
CZ291913B6 (cs) 2003-06-18
DE69612964D1 (de) 2001-06-28
DK0811081T3 (da) 2001-09-17
ATE201455T1 (de) 2001-06-15
DZ1996A1 (fr) 2002-07-20
MA23807A1 (fr) 1996-10-01
JPH11503490A (ja) 1999-03-26
DE69612964T2 (de) 2001-12-13
PL321900A1 (en) 1998-01-05
ZA961459B (en) 1997-08-25
CZ264097A3 (cs) 1998-04-15
IL117174A (en) 1999-06-20
MX9706304A (es) 1997-11-29
US6056832A (en) 2000-05-02
AU4834296A (en) 1996-09-11
FR2730942B1 (fr) 1997-05-16
EP0811081A1 (fr) 1997-12-10
HU220554B1 (hu) 2002-03-28
BR9607322A (pt) 1997-12-30
IL117174A0 (en) 1996-06-18
AU708839B2 (en) 1999-08-12
TNSN96032A1 (fr) 1998-12-31

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