EP1052296B1 - Utilisation d'un acier pour la fabrication de plaques de blindage - Google Patents

Utilisation d'un acier pour la fabrication de plaques de blindage Download PDF

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Publication number
EP1052296B1
EP1052296B1 EP00109687A EP00109687A EP1052296B1 EP 1052296 B1 EP1052296 B1 EP 1052296B1 EP 00109687 A EP00109687 A EP 00109687A EP 00109687 A EP00109687 A EP 00109687A EP 1052296 B1 EP1052296 B1 EP 1052296B1
Authority
EP
European Patent Office
Prior art keywords
steel
use according
sheet
microstructure
armor plate
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
EP00109687A
Other languages
German (de)
English (en)
Other versions
EP1052296A2 (fr
EP1052296A3 (fr
Inventor
Christoph Kuntze
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
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 ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Priority to DK00109687T priority Critical patent/DK1052296T3/da
Publication of EP1052296A2 publication Critical patent/EP1052296A2/fr
Publication of EP1052296A3 publication Critical patent/EP1052296A3/fr
Application granted granted Critical
Publication of EP1052296B1 publication Critical patent/EP1052296B1/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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/42—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for armour plate
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/78—Combined heat-treatments not provided for above

Definitions

  • the invention relates to the use of a steel for Production of hot-rolled armored sheet.
  • the slabs After heating to a temperature of> 1150 ° C, the slabs, which are preferably produced in a continuous casting process, are hot-rolled into coarse strips or sheets.
  • the armored sheet which was rolled to its final thickness, is hardened after cooling to room temperature by reheating to above Ac 3 and quenching at a rate of> 1 K / s in oil or water.
  • the sheet can then be tempered in the temperature range of 180 to 250 ° C if necessary.
  • a high hardness which is as little as possible below the crack hardness, is set.
  • These well-known armor plates are characterized by a homogeneous structure as well as high hardness and bullet resistance even with a large thickness. The penetration depth of projectiles can usually be reduced by 30%.
  • an armor plate made of steel is included 0.25 - 0.45% C, 0.08 - 0.50% Si, 0.30 - 1.50% Mn, ⁇ 0.02% P, ⁇ 0.02% S, 0.60 - 1.80% Cr, 0.20-0.60% Mo, ⁇ 0.006% B, 0.02-0.15% Al and / or Ti and 0.005 - 0.03% Nb known from CA 1 266 760 C1, which austenitizes at 860 to 960 ° C, then quenched and tempered at 160-550 ° C.
  • the invention has for its object one for Manufacture of steel sheet suitable for armor to propose, the one produced from this steel Armored sheet metal on the one hand with regard to bullet resistance properties at least as good as the armor plates of the on the other hand improved material properties, such as a higher one Yield strength, higher strength at the same time higher toughness and improved weldability having.
  • the invention proposes the use of a (in mass%) 0.15 - 0.2% C 0.1 - 0.5% Si 0.7 - 1.7% Mn ⁇ 0.02% P ⁇ 0.005% S ⁇ 0.01% N 0.009 - 0.1% al 0.5 - 1.0% Cr 0.2 - 0.7% Mo 1.0 - 2.5% Ni 0.05 - 0.25% V Rest of iron including unavoidable impurities, steel for the production of armored sheet, which has a tempering structure and a yield strength> 1100 N / mm 2 , a hardness> 400 HB and a notched impact strength A v of at least 27 joules measured on an ISO-V cross-test at -40 ° C having.
  • a steel alloy of the following composition (in mass%) is preferred within the composition range used according to the invention: 0.16 - 0.18% C 0.2 - 0.4% Si 0.9 - 1.1% Mn ⁇ 0.015% P ⁇ 0.005% S ⁇ 0.008% N 0.015 - 0.05% al 0.6 - 0.8% Cr 0.5 - 0.6% Mo 1.9 - 2.0% Ni 0.06 - 0.1% V Balance Fe including unavoidable impurities.
  • the steel alloy can additionally contain up to 0.005% boron contain.
  • the nitrogen content of the steel alloy should preferably limited to 0.004 to 0.008%.
  • the steel alloy used according to the new use stands out compared to the above known steel alloy on the one hand by a lower carbon content and secondly through the Carbonitride former vanadium as a precipitation hardening agent Element off.
  • the yield strength of the armor plate according to the invention is over 1100 N / mm 2 compared to only 950 N / mm 2 of the known armor plate.
  • the minimum tensile strength is 1200 N / mm 2 , in particular 1250 N / mm 2 , and is consequently significantly higher than the minimum tensile strength of 1150 N / mm 2 achieved in the prior art.
  • the toughness of armor sheets according to the invention measured on an ISO-V transverse sample at -40 ° C., is A v ⁇ 27 joules. Their elongation at break is more than 10%.
  • Armor sheet produced according to the invention preferably a predominantly martenistic structure a fine grain. Particularly good ones Material properties arise when the proportion of martensitic structure is at least 98%.
  • room temperature i.e. to well below the martensite start temperature fine-grained martensitic structure.
  • Whose Fine grain can be further improved in that the quench to room temperature after the second Austenitization in the temperature range of 800 - 500 ° C with one related to the sheet metal core Cooling rate of at least 5 K / s takes place, whereby preferred for the rapid cooling Pressurized water is used.
  • an invention composite usually in heavy plate thickness executed sheet metal in the course of its remuneration up to cooled its core at such high speeds armor sheet is obtained, which has a share in very fine-grained martensite of more than 98%.
  • Such an armor plate has, as already above mentions excellent properties and meets the requirements Sheets of the type in question reliable.
  • a melt of the composition shown in Table 1 was poured into a 260 mm thick slab.
  • the slab was based on a furnace temperature of 1250 ° C, with a piercing temperature of about 1100 ° C at a final rolling temperature of 950 ° C to a final thickness of 10, 40 and 50 mm hot rolled. Then the Aging treatment.
  • sheets 1, 3 and 4 in Table 2 consisted of austenitizing (940 ° C / water) with subsequent tempering 320 ° C / air. Sheet 2 was austenitized twice, quenched and tempered. The samples of the like The properties of the armored sheet obtained are in Table 2 compiled.

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 Steel (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Laminated Bodies (AREA)

Claims (5)

  1. Utilisation d'un acier présentant (en % en masse)
       0,15 à 0,20% de C
       0,10 à 0,50% de Si
       0,70 à 1,70% de Mn
          < 0,02% de P
          < 0,005% de S
          < 0,01% de N
       0,009 à 0,10% de Al
       0,50 à 1,00% de Cr
       0,20 à 0,70% de Mo
       1,00 à 2,50% de Ni
       0,05 à 0,25% de V
       jusqu'à 0,0050% de B
       le reste étant du fer y compris les impuretés inévitables
       pour la préparation d'une plaque de blindage, qui présente une structure de traitement par trempe et revenu, une limite élastique > 1100 N/mm2, une dureté > 400 HB et une résilience à -40°C sur un barreau en travers ISO-V Av d'au moins 27 Joules.
  2. Utilisation selon la revendication 1, caractérisée en ce que l'alliage d'acier contient (en % en masse)
       0,16 à 0,18% de C
       0,20 à 0,40% de Si
       0,90 à 1,10% de Mn
          < 0,015% de P
          < 0,005% de S
          < 0,008% de N
       0,015 à 0,050% de Al
       0,60 à 0,80% de Cr
       0,50 à 0,60% de Mo
       1,90 à 2,00% de Ni
       0,06 à 0,10% de V
       le reste étant du fer y compris les impuretés inévitables
  3. Utilisation selon l'une des revendications précédentes, caractérisée en ce que la teneur en azote de l'alliage d'acier est limitée de 0,0040 à 0,0080%.
  4. Utilisation selon l'une des revendications précédentes, caractérisée en ce que la plaque de blindage possède une structure essentiellement martensitique.
  5. Utilisation selon la revendication 4, caractérisée en ce que la proportion martensitique de la structure s'élève à au moins 98%.
EP00109687A 1999-05-08 2000-05-08 Utilisation d'un acier pour la fabrication de plaques de blindage Expired - Lifetime EP1052296B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK00109687T DK1052296T3 (da) 1999-05-08 2000-05-08 Anvendelse af et stål til fremstilling af panserplader

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19921327 1999-05-08
DE19921327 1999-05-08

Publications (3)

Publication Number Publication Date
EP1052296A2 EP1052296A2 (fr) 2000-11-15
EP1052296A3 EP1052296A3 (fr) 2002-06-26
EP1052296B1 true EP1052296B1 (fr) 2004-12-15

Family

ID=7907466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00109687A Expired - Lifetime EP1052296B1 (fr) 1999-05-08 2000-05-08 Utilisation d'un acier pour la fabrication de plaques de blindage

Country Status (5)

Country Link
EP (1) EP1052296B1 (fr)
AT (1) ATE284977T1 (fr)
DE (1) DE50008938D1 (fr)
DK (1) DK1052296T3 (fr)
ES (1) ES2234476T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705257A1 (fr) 2005-03-24 2006-09-27 Benteler Automobiltechnik GmbH Blindage pour véhicule
EP2028435A1 (fr) 2007-08-23 2009-02-25 Benteler Automobiltechnik GmbH Blindage pour un véhicule
CN111996437A (zh) * 2020-07-11 2020-11-27 江阴兴澄特种钢铁有限公司 一种大厚度高韧性屈服强度1100MPa级超高强钢板的生产方法
EP3321944B1 (fr) 2014-09-17 2022-04-06 Siemens Energy Global GmbH & Co. KG Installation électrique résistante au bombardement

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1321535B1 (fr) * 2001-12-19 2005-03-23 Böhler Bleche GmbH Matériau de haute protection ballistique
DE10235219A1 (de) * 2002-08-01 2004-02-19 K.B.P. Kettenwerk Becker-Prünte Gmbh Stahl mit hoher Festigkeit und gleichzeitig guter Zähigkeit
DE102008014914B4 (de) * 2007-08-23 2013-07-04 Vps Vehicle Protection Systems Gmbh Strukturteil für eine Fahrzeug-Panzerung
DE102008010168B4 (de) * 2008-02-20 2010-04-22 Benteler Automobiltechnik Gmbh Panzerung für ein Fahrzeug
DE102008054078A1 (de) 2008-10-31 2010-05-06 Daimler Ag Kraftfahrzeugkarosserie aus verschiedenen Stählen
DE102012109693B4 (de) * 2012-10-11 2018-06-28 Benteler Defense Gmbh & Co. Kg Verwendung einer Stahllegierung zur Herstellung eines Panzerbauteils und Panzerbauteil
CN109750228A (zh) * 2019-03-04 2019-05-14 内蒙金属材料研究所 一种稀土抗冲击钢板及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130462A (ja) * 1984-11-28 1986-06-18 Tech Res & Dev Inst Of Japan Def Agency 降伏応力１１０ｋｇｆ／ｍｍ↑２以上の耐応力腐蝕割れ性のすぐれた高靭性超高張力鋼
JPH0670248B2 (ja) * 1988-09-13 1994-09-07 川崎製鉄株式会社 板厚方向の均質性に優れた溶接用超高張力鋼板の製造方法
DE4223895C1 (de) * 1992-07-21 1994-03-17 Thyssen Stahl Ag Verfahren zur Herstellung von dicken Panzerblechen
JPH07126739A (ja) * 1993-11-09 1995-05-16 Kobe Steel Ltd 引張強さが９８０Ｎ／ｍｍ２級以上の残留応力の低い高靱性高張力鋼板の製造方法
DE19736720C1 (de) * 1997-08-19 1999-05-06 Mannesmann Ag Metallurgisches Gefäß

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705257A1 (fr) 2005-03-24 2006-09-27 Benteler Automobiltechnik GmbH Blindage pour véhicule
DE102005014298A1 (de) * 2005-03-24 2006-10-05 Benteler Automobiltechnik Gmbh Panzerung für ein Fahrzeug
DE102005014298B4 (de) * 2005-03-24 2006-11-30 Benteler Automobiltechnik Gmbh Panzerung für ein Fahrzeug
EP2028435A1 (fr) 2007-08-23 2009-02-25 Benteler Automobiltechnik GmbH Blindage pour un véhicule
DE102007039998A1 (de) 2007-08-23 2009-02-26 Benteler Automobiltechnik Gmbh Panzerung für ein Fahrzeug
EP3321944B1 (fr) 2014-09-17 2022-04-06 Siemens Energy Global GmbH & Co. KG Installation électrique résistante au bombardement
CN111996437A (zh) * 2020-07-11 2020-11-27 江阴兴澄特种钢铁有限公司 一种大厚度高韧性屈服强度1100MPa级超高强钢板的生产方法

Also Published As

Publication number Publication date
DE50008938D1 (de) 2005-01-20
ES2234476T3 (es) 2005-07-01
EP1052296A2 (fr) 2000-11-15
DK1052296T3 (da) 2005-04-11
EP1052296A3 (fr) 2002-06-26
ATE284977T1 (de) 2005-01-15

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