EP0917594B1 - Steel, method for its manufacture, its use and product made from steel - Google Patents

Steel, method for its manufacture, its use and product made from steel Download PDF

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Publication number
EP0917594B1
EP0917594B1 EP97941934A EP97941934A EP0917594B1 EP 0917594 B1 EP0917594 B1 EP 0917594B1 EP 97941934 A EP97941934 A EP 97941934A EP 97941934 A EP97941934 A EP 97941934A EP 0917594 B1 EP0917594 B1 EP 0917594B1
Authority
EP
European Patent Office
Prior art keywords
steel
strip
accordance
rolling
ppm
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
EP97941934A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0917594A1 (en
Inventor
Frederik Jonker
Willem Jan Schol
Johannes Mulder
Maarten Arie De Haas
Egbert Jansen
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.)
Tata Steel Ijmuiden BV
Original Assignee
Corus Staal BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19763339&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0917594(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Corus Staal BV filed Critical Corus Staal BV
Priority to SI9730112T priority Critical patent/SI0917594T1/xx
Publication of EP0917594A1 publication Critical patent/EP0917594A1/en
Application granted granted Critical
Publication of EP0917594B1 publication Critical patent/EP0917594B1/en
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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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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

Definitions

  • the invention relates to a steel in the form of sheet or strip with excellent stretching and deep-drawing and wall ironing properties, in particular for packaging applications, a method for its manufacture and also a use of such a steel.
  • the packaging steel is taken to mean a consecutively hot-rolled, pickled, cold-reduced, annealed and generally temper-rolled or further cold-reduced steel in the form of sheet or strip whether or not coiled.
  • Blanks of this sheet or strip are to be made in a number of forming operations into a (semi-finished) product for example a beverage can or other object, whereby for the purposes of the intended shape, the flat basic material needs to undergo extensive material deformations.
  • a cup is formed for example by deep drawing from a blank of packaging steel in one or more stages, the walls of which are wall-ironed in order to give the can thus formed a greater height/content.
  • the deep-drawing in one stage and wall-ironing require an easily formable material that has ideally isotropic properties.
  • This steel makes it possible to attain an improved level of stretching, deep-drawing and wall ironing properties and a greatly reduced spread of the mechanical properties.
  • composition complies with: Element Min* Max C 10 40 Mn 140 200 P 20 S 20, preferably 10 Si 30 N ppm 25 Al 15 35 B ppm 8 25 Cu 40 Sn 10 Cr 40 Ni 40 Mo 10
  • the steel strip is in the form of cold reduced, annealed and optionally further cold reduced strip or sheet wherein the grain size in an edge region of the strip Gs-edge and the grain size in a centre region of the strip Gs-centre differ less than 0.5 ASTM units, respectively wherein the r-value in an edge region of the strip r-edge and the r-value in a centre region of the strip r-centre differ less than 0.2 units, preferably less than 0.1 units, respectively wherein the Yield Point in an edge region of the strip Rp-edge and the Yield Point in a centre region of the strip Rp-centre differ less than 20 N/mm 2 , respectively wherein the average r-value is at least 1.3.
  • the invention is further embodied in a method for manufacturing an annealed steel strip from the steel according to any one of claims 1-7, comprising the stages:
  • the finish-rolling temperature is selected above 825 °C and the coiling temperature below 690 °C, more preferably the finish-rolling temperature is selected at 900 ⁇ 30 °C and the coiling temperature at 670 °C ⁇ 20 °C.
  • the total cold reduction before annealing is 85 % or more.
  • temper rolling it is preferable to do so with a reduction of at least 0.6 %.
  • a target value is selected for the finish-rolling temperature of 900°C and for the coiling temperature a target value of 670°C. This establishes the basis for a very easily workable, homogeneous steel sheet. It is preferable that if temper-rolling is carried out it is done so in accordance with the invention with a reduction of 10-20 %. Such a high degree of deformation still produces a steel grade with excellent mechanical properties.
  • the steel grade in accordance with the invention is found to be perfectly suitable for application as packaging steel in drawing and wall-ironing (DWI) applications, for example applications wherein the packaging steel is coated with a coating comprising Sn and afterwards subjected in succession to deep-drawing and wall-ironing as in the manufacture of the body part of a two-piece can.
  • DWI drawing and wall-ironing
  • the excellent mechanical properties of the steel allow such a can to be made even lighter, again responding to the demand for increasingly less material consumption and weight for packaging and other products.
  • the invention is also embodied in a use of the steel for stretching, deep-drawing and drawing and wall-ironing applications, in a steel provided with one or more coatings selected from the group of coatings comprising Sn, Cr, lacquer, organic coating, polymer and combinations thereof on one or both sides of the strip or sheet, and in a stretched, deep drawn or drawn and wall ironed product made from steel according to the invention.
  • the r-value means the Lankford-value, Reh (Rp) the yield point in N/mm 2 , Rm the tensile strength in N/mm 2 .
  • a pre-spin-necked can is shown.
  • the can is formed with a neck which is of smaller diameter than its main body portion, this neck having a cylindrical portion of diameter PSPD and an out-turned flange at its end having a maximum diameter PSED as indicated in Fig. 1.
  • These diameters are dependent on the material quality but are critical for successful can formation, since the neck is used to fix the lid in place after filling.
  • each open square symbol indicates the values of PSED and PSPD of a pre-spin-necked can made from a blank taken from the steel C according to the invention and each filled square symbol indicates those of a can made from comparative steel D.
  • the vertical line at a PSED value of in this case 56.1 indicates the limit for PSED above which the manufactured can will be rejected because of wavy flanges.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP97941934A 1996-08-08 1997-08-08 Steel, method for its manufacture, its use and product made from steel Revoked EP0917594B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730112T SI0917594T1 (en) 1996-08-08 1997-08-08 Steel, method for its manufacture, its use and product made from steel

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1003762A NL1003762C2 (nl) 1996-08-08 1996-08-08 Staalsoort, staalband en werkwijze ter vervaardiging daarvan.
NL1003762 1996-08-08
PCT/EP1997/004407 WO1998006881A1 (en) 1996-08-08 1997-08-08 Steel, method for its manufacture, its use and product made from steel

Publications (2)

Publication Number Publication Date
EP0917594A1 EP0917594A1 (en) 1999-05-26
EP0917594B1 true EP0917594B1 (en) 2000-11-29

Family

ID=19763339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97941934A Revoked EP0917594B1 (en) 1996-08-08 1997-08-08 Steel, method for its manufacture, its use and product made from steel

Country Status (13)

Country Link
EP (1) EP0917594B1 (nl)
KR (1) KR100493780B1 (nl)
CN (1) CN1077145C (nl)
AT (1) ATE197820T1 (nl)
AU (1) AU712399B2 (nl)
DE (1) DE69703623T2 (nl)
DK (1) DK0917594T3 (nl)
ES (1) ES2152702T3 (nl)
GR (1) GR3035459T3 (nl)
NL (1) NL1003762C2 (nl)
PT (1) PT917594E (nl)
WO (1) WO1998006881A1 (nl)
ZA (1) ZA977108B (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117118C1 (de) * 2001-04-06 2002-07-11 Thyssenkrupp Stahl Ag Verfahren zur Herstellung von gut umformfähigem Feinstblech und Verwendung eines Stahls
US10851434B2 (en) 2014-03-28 2020-12-01 Jfe Steel Corporation Steel sheet for can and method for manufacturing the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000158888A (ja) * 1998-11-25 2000-06-13 Okamoto Ind Inc マット
JP5812048B2 (ja) 2013-07-09 2015-11-11 Ｊｆｅスチール株式会社 焼入れ性および加工性に優れる高炭素熱延鋼板およびその製造方法
EP3190202B1 (en) 2013-07-09 2022-03-30 JFE Steel Corporation High-carbon hot-rolled steel sheet and method for producing the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144486B2 (nl) * 1971-09-30 1976-11-29
US3988173A (en) * 1972-04-03 1976-10-26 Nippon Steel Corporation Cold rolled steel sheet having excellent workability and method thereof
FR2179008B1 (nl) * 1972-04-03 1975-12-26 Nippon Steel Corp
US4348229A (en) * 1980-08-22 1982-09-07 Nippon Steel Corporation Enamelling steel sheet
EP0612857B1 (en) * 1992-09-14 1999-07-28 Nippon Steel Corporation Ferrite single phase cold rolled steel sheet or fused zinc plated steel sheet for cold non-ageing deep drawing and method for manufacturing the same
FR2696421B1 (fr) * 1992-10-05 1995-01-06 Lorraine Laminage Acier pour emballage à ouverture par rupture d'une ligne de moindre résistance.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117118C1 (de) * 2001-04-06 2002-07-11 Thyssenkrupp Stahl Ag Verfahren zur Herstellung von gut umformfähigem Feinstblech und Verwendung eines Stahls
US10851434B2 (en) 2014-03-28 2020-12-01 Jfe Steel Corporation Steel sheet for can and method for manufacturing the same

Also Published As

Publication number Publication date
KR100493780B1 (ko) 2005-06-08
DK0917594T3 (da) 2001-03-26
ATE197820T1 (de) 2000-12-15
WO1998006881A1 (en) 1998-02-19
DE69703623D1 (de) 2001-01-04
ES2152702T3 (es) 2001-02-01
GR3035459T3 (en) 2001-05-31
KR20000029850A (ko) 2000-05-25
ZA977108B (en) 1998-03-03
AU712399B2 (en) 1999-11-04
CN1230231A (zh) 1999-09-29
EP0917594A1 (en) 1999-05-26
CN1077145C (zh) 2002-01-02
NL1003762C2 (nl) 1998-03-04
PT917594E (pt) 2001-05-31
AU4379797A (en) 1998-03-06
DE69703623T2 (de) 2001-05-10

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