US20150017469A1 - Sheet steel for use as packaging steel and method for producing packaging steel - Google Patents

Sheet steel for use as packaging steel and method for producing packaging steel Download PDF

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Publication number
US20150017469A1
US20150017469A1 US14/367,756 US201214367756A US2015017469A1 US 20150017469 A1 US20150017469 A1 US 20150017469A1 US 201214367756 A US201214367756 A US 201214367756A US 2015017469 A1 US2015017469 A1 US 2015017469A1
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Prior art keywords
max
steel
sheet steel
less
sheet
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Inventor
Reiner Sauer
Burkhard Kaup
Dirk Matusch
Dimitrios Nouskalis
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ThyssenKrupp Rasselstein GmbH
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ThyssenKrupp Rasselstein GmbH
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Assigned to THYSSENKRUPP RASSELSTEIN GMBH reassignment THYSSENKRUPP RASSELSTEIN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NOUSKALIS, DIMITRIOUS, KAUP, BURKHARD, DR., MATUSCH, DIRK, DR., SAUER, REINER, DR.
Publication of US20150017469A1 publication Critical patent/US20150017469A1/en
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    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B32B15/015—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
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    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component
    • Y10T428/12854—Next to Co-, Fe-, or Ni-base component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]

Definitions

  • the invention relates to a sheet steel for use as packaging steel according to the generic part of Claim 1 and a method for producing a packaging steel from a cold-rolled sheet steel according to the generic part of Claim 2 .
  • dual-phase steels are known from automobile manufacturing; they have a multiphase structure that substantially consists of martensite and ferrite or bainite, and they on the one hand have high tensile strength and on the other also have high elongation at break.
  • One such dual-phase steel with a yield point of at least 580 MPa and an elongation at break A 80 of at least 10% is known, for example, from WO 2009/021898 A1. Because of the combination of the material properties of such dual-phase steels and high strength and good formability the said dual-phase steels are especially suitable for making complexly shaped and highly stressed components such as are needed, for example, in the area of automobile chassis construction.
  • the alloying of the known dual-phase steels is composed of a martensite fraction of 20% to 70% and any residual austenite fraction and also ferrite and/or bainite.
  • the good formability of dual-phase steels is ensured through a relatively soft ferrite phase and the high strength is produced by the solid martensite and bainite phases, which are bound into a ferrite matrix.
  • the desired properties with regard to formability and strength can be controlled in wide ranges through the alloy composition. For example, by adding silicon the strength can be increased by hardening the ferrite or bainite. Martensite formation can be positively affected through the addition of manganese and the development of perlite can be prevented.
  • the strength can be increased by alloying with aluminum, titanium, and boron. Moreover, alloying with aluminum is used for deoxidation and for binding nitrogen that may be present in the steel.
  • a recrystallizing (or austenitizing) heat treatment in which the steel strip is heated to sufficient temperatures and then cooled so that the desired multiphase alloyed structure is established with a substantially ferritic-martensitic structural development.
  • cold rolled steel strips are usually recrystallization annealed in a continuous annealing process in an annealing furnace, where the parameters of the annealing furnace, for example pass-through rate, annealing temperature, and cooling rate, are established in correspondence with the required structure and the desired material properties.
  • a higher strength dual-phase steel and a method for its production are known from DE 10 2006 054 300 A1, where in the production process a cold- or hot-rolled steel strip is subjected to a continuous recrystallization annealing in a continuous annealing furnace in a temperature range of 820° C. to 1000° C. and the annealed steel strip is then cooled from the said annealing temperature at a cooling rate between 15 and 30° C. per second.
  • Dual-phase steels known from automobile manufacturing are, as a rule, not suitable for use as packaging steel, since they are very expensive, particularly because of the high fractions of alloying elements like manganese, silicon, chromium, and aluminum and since, for example, some of the known alloying elements must not be used for packaging steel in the food area, since contamination of foods by diffusion of alloy components into the packaging contents must be excluded.
  • many of the known dual-phase steels have strengths so high that they cannot be cold-rolled with the systems that are usually used for production of packaging steel.
  • the invention is based on the task of making available a higher strength steel with good formability for use as packaging steel that is as cost effective as possible to produce. Further, the invention is intended to point out a method for production of a packaging steel that can be made cheaply and that has high strength and high elongation at break.
  • the sheet steel according to the invention for use as packaging steel is made from a low-alloy and cold-rolled steel with a carbon content of less than 0.1%.
  • sheet steel will be understood to mean such a steel.
  • the sheet steel according to the invention is characterized by a multiphase structure, which comprises ferrite and at least one of the structural components martensite or bainite.
  • the steel from which the sheet steel according to the invention is made can be a cold-rolled unalloyed or low alloy steel. Steels in which no alloy element exceeds an average content of 5% are called low alloy steels.
  • the steel used to make the sheet steel according to the invention in particular has less than 0.5 wt % and preferably less than 0.4 wt % manganese, less than 0.04 wt % silicon, less than 0.1 wt % aluminum, and less than 0.1 wt % chromium.
  • the steel can contain alloying additions of boron and/or niobium and/or titanium in order to increase the strength, where the alloying with boron expediently lies in the range of 0.001-0.005 wt % and the alloying with niobium or titanium lies in the range of 0.005-0.05 wt %.
  • weight fractions that are ⁇ 0.03% are preferred for Nb.
  • the steel for making the sheet steel according to the invention for use as packaging steel is first subjected to recrystallization annealing by electromagnetic induction at a heating rate of more than 75 K/s and cooled after the recrystallizing induction annealing at a cooling rate of at least 100 K/s.
  • recrystallizing heat treatment with T max >Ac1, since austenitization is necessary
  • subsequent rapid cooling there forms the multiphase structure, which comprises ferrite and at least one of the structural components martensite, bainite, and/or residual austenite.
  • the sheet steel treated in this way has a tensile strength of at least 500 MPa and an elongation at break of more than 6%.
  • the recrystallizing (or austenitizing) annealing of the sheet steel by means of electromagnetic conduction proved to be an especially important parameter for the production of the packaging steel according to the invention.
  • the alloying of alloy components that are typically contained in dual-phase steels for example the alloying of manganese (which typically has a weight fraction of 0.8-2.0% in the known dual-phase steels), silicon (which typically has a weight fraction of 0.1-0.5% in the known dual-phase steels), and aluminum (which is alloyed in a weight fraction up to 0.2% in the known dual-phase steels) can be omitted if a cold rolled sheet steel with carbon content less than 0.1 wt % is first subjected to recrystallization (or austenitizing) annealing at a heating rate of more than 75 K/s by means of electromagnetic induction and then quenched at a high cooling rate of at least 100 K/s.
  • ferromagnetic substances are not magnetized in the absence of an external magnetic field. However, within these substances there are regions (Weiss regions), which are magnetized to saturation even in the absence of external magnetic fields.
  • the Weiss regions are separated by Bloch walls.
  • Weiss regions grow at the expense of adjacent regions.
  • Bloch walls shift as this occurs.
  • the electronic spin flip in this case does not take place everywhere simultaneously, rather the spins change direction at the boundaries of the Weiss regions first.
  • the sheet steel according to the invention for use as packaging steel is fine or ultrafine sheet that was rolled to its end thickness in a cold rolling process.
  • Fine sheet is understood to mean a sheet with a thickness of less than 3 mm and an ultrafine sheet has a thickness of less than 0.5 mm.
  • the sheet steel can be provided with a metal surface coating, for example of tin, chromium, aluminum, zinc, or zinc/nickel, to increase its corrosion resistance.
  • the known electrolytic coating processes, for example, are suggested for this.
  • steel strips of steels having the following composition [were made], which were made in a continuous casting process and hot rolled and wound into coils:
  • This sheet steel was first cold rolled with a thickness reduction of 50% to 96% to an end thickness in the range of about 0.5 mm and then recrystallizing-annealed in an induction furnace under induction heating.
  • the annealing curve is shown in FIG. 1 .
  • the steel strip was heated within a very short heat-up time t A , which typically is between 0.5 s and 10 s, to a maximum temperature T max above the A 1 temperature (T (A 1 ) ⁇ 725° C.).
  • the maximum temperature T max lies under the phase transition temperature T f of the ferromagnetic phase transition (T f ⁇ 770° C.).
  • the temperature of the steel strip was then maintained at a temperature value above the A 1 temperature for an annealing time t G time of about 1 s.
  • the steel cooled negligibly from its maximum temperature T max of, for example, 750° C. to the A 1 temperature (about 725° C.).
  • the steel strip was cooled to room temperature (about 23° C.) by means of a fluid cooling, which can be produced, for example, by a water cooling or air cooling in a cooling interval of about 0.25 s. After the cooling, if necessary, another cold rolling step with thickness reduction of up to 40% can take place.
  • FIG. 2 shows a structure in cross section with Klemm color etching, where the regions shown there in white are the martensite phase and the blue or brown regions indicate the ferrite phase.
  • the sheet steel according to the invention is outstandingly suitable for use as packaging steel.
  • cans for food or beverages can be made from the sheet steel according to the invention.
  • a metallic and corrosion resistant coating after the heat treatment and possibly after a final dressing or a cold rolling step, for example by electrolytic tin plating or chrome plating.
  • other coating materials such as aluminum, zinc, or zinc/nickel, and other coating methods, for example hot dip zinc plating, can also be used. In each case according to requirements the coating can take place on one side or both sides.
  • the sheet steel according to the invention for use as packaging steel is characterized in particular by the considerably lower production costs and by the advantage that a steel with lower alloy concentration and fewer alloy components can be used, so that contamination of the packaged foods can be avoided.
  • the sheet steel according to the invention is comparable to the dual-phase steels known from automobile construction.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Wrappers (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
US14/367,756 2011-12-22 2012-10-02 Sheet steel for use as packaging steel and method for producing packaging steel Abandoned US20150017469A1 (en)

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DE102011056847.6A DE102011056847B4 (de) 2011-12-22 2011-12-22 Stahlblech zur Verwendung als Verpackungsstahl sowie Verfahren zur Herstellung eines Verpackungsstahls
DE102011056847.6 2011-12-22
PCT/EP2012/069465 WO2013091923A1 (de) 2011-12-22 2012-10-02 Stahlblech zur verwendung als verpackungsstahl sowie verfahren zur herstellung eines verpackungsstahls

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DE102013101847B3 (de) * 2013-02-25 2014-03-27 Thyssenkrupp Rasselstein Gmbh Verfahren zur Herstellung eines korrosionsbeständigen Stahlblechs
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DE102014116929B3 (de) * 2014-11-19 2015-11-05 Thyssenkrupp Ag Verfahren zur Herstellung eines aufgestickten Verpackungsstahls, kaltgewalztes Stahlflachprodukt und Vorrichtung zum rekristallisierenden Glühen und Aufsticken eines Stahlflachprodukts
EP3162558A1 (de) * 2015-10-30 2017-05-03 Outokumpu Oyj Komponente aus metallischem verbundstoffmaterial und verfahren zur herstellung der komponente durch warmformung
KR20170089045A (ko) * 2015-12-21 2017-08-03 주식회사 포스코 마르텐사이트 함유 강판의 제조방법 및 장치
ITUB20161045A1 (it) * 2016-02-25 2017-08-25 Riccardo Zorzi Contenitore multiuso per alimenti da asporto in materiale metallico
DE102017208727A1 (de) * 2017-05-23 2018-11-29 Thyssenkrupp Ag Verbesserung der Kaltumformeignung aluminiumbasierter Beschichtung durch Zulegieren von Erdalkalimetallen
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US10941456B2 (en) 2016-02-29 2021-03-09 Jfe Steel Corporation Steel sheet for can and method for manufacturing the same
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CN106978566A (zh) * 2017-04-27 2017-07-25 甘肃酒钢集团宏兴钢铁股份有限公司 一种铁道车辆用耐大气腐蚀钢及其制备方法
US11920206B2 (en) 2021-10-04 2024-03-05 Thyssenkrupp Rasselstein Gmbh Cold rolled flat steel product for packaging and method for producing a steel flat product

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JP2015507086A (ja) 2015-03-05
ES2617233T3 (es) 2017-06-15
EP2794936B1 (de) 2016-12-28
BR112014014788A2 (pt) 2017-06-13
ES2613886T3 (es) 2017-05-26
BR112014014788B1 (pt) 2019-03-26
DE102011056847B4 (de) 2014-04-10
DE102011056847A1 (de) 2013-06-27
EP2794937B1 (de) 2017-01-18
ES2613886T5 (es) 2020-03-30
RU2586196C2 (ru) 2016-06-10
US20150010779A1 (en) 2015-01-08
RS55574B1 (sr) 2017-05-31
JP2015508449A (ja) 2015-03-19
CA2857987C (en) 2016-09-20
CN104011230B (zh) 2016-08-24
EP2794937A1 (de) 2014-10-29
CN104011230A (zh) 2014-08-27
EP2794936A1 (de) 2014-10-29
AU2012359105B2 (en) 2015-11-05
AU2012359105A1 (en) 2014-07-10
WO2013092170A1 (de) 2013-06-27
PL2794936T3 (pl) 2017-06-30
EP2794936B2 (de) 2019-10-02
US9650692B2 (en) 2017-05-16
RU2014128999A (ru) 2016-02-20
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JP5855761B2 (ja) 2016-02-09

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