CA2414138A1 - Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel - Google Patents

Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel Download PDF

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Publication number
CA2414138A1
CA2414138A1 CA002414138A CA2414138A CA2414138A1 CA 2414138 A1 CA2414138 A1 CA 2414138A1 CA 002414138 A CA002414138 A CA 002414138A CA 2414138 A CA2414138 A CA 2414138A CA 2414138 A1 CA2414138 A1 CA 2414138A1
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CA
Canada
Prior art keywords
steel
strip
producing
cold
sheet
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.)
Granted
Application number
CA002414138A
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French (fr)
Other versions
CA2414138C (en
Inventor
Harald Hofmann
Bernhard Engl
Manfred Menne
Thomas Heller
Werner Zimmermann
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ThyssenKrupp Steel Europe AG
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Individual
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Application filed by Individual filed Critical Individual
Publication of CA2414138A1 publication Critical patent/CA2414138A1/en
Application granted granted Critical
Publication of CA2414138C publication Critical patent/CA2414138C/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
    • 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
    • C21D8/0205—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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—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
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing

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  • 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)

Abstract

The invention relates to steel strips or steel sheets exhibiting good cold forming ability and increased stability, comprising a light steel, which contains (in wt. %) C: <=1.00 %, Mn: 7.0030.00 %, Al: 1.00 10.00 %, Si: & gt; 2.50 8.00 %, Al + Si: > 3.50 12.00 %, B: > 0.00 - < 0.01 %, and optional ly Ni: < 8.00 %, Cu: < 3.00 %, N: < 0.60 %, Nb: < 0.30 %, Ti: < 0.30 %, V : < 0.30 %, P: < 0.01 %, the remainder being iron and unavoidable impurities.

Claims (30)

1. A light steel, having good cold formability and high strength, with the following composition (in weight-percent):

C: <= 1.00 %

Mn: 7.00 - 30.00 %

Al: 1.00 - 10.00 %

Si: > 2.50 - 8.00 %

Al + Si: > 3.50 - 12.00 %

B: > 0.00 < 0.01 %
-as well as alternately Ni: < 8.00 %

Cu: < 3.00 %

N: < 0.60 %

Nb: < 0.30 %

Ti: < 0.30 %

V: < 0.30 %

P: < 0.01 %, with the remainder iron and unavoidable impurities.
2. The light steel according to Claim 1, characterized in that the carbon content is 0.10 - 1.00 weight-percent.
3. The light steel according to one of the preceding claims, characterized in that the Si content is > 2.70 weight-percent.
4. The light steel according to one of the preceding claims, characterized in that the boron content is 0.002 weight-percent to 0.01 weight-percent, in particular 0.003 to 0.008 weight-percent.
5. A steel strip or sheet steel produced from a steel having a composition according to one of Claims 1 to 4.
6. The steel strip or sheet steel according to Claim 5, characterized in that its tensile strength is at least 680 MPa.
7. The steel strip or sheet steel according to Claim 5 or 6, characterized in that the product of its tensile strength and its elongation is at least 41,000 MPa.
8. The steel strip or sheet steel according to one of Claims 4 to 7, characterized in that its yield point is up to 520 MPa.
9. A method for producing a cold formable, high-strength steel strip or sheet steel, wherein - an input stock, such as slabs, thin slabs, or strip, is cast from a steel having a composition according to one of Claims 1 to 4, - the cast input stock is heated to = 1100 °C or used directly at such a temperature, - the preheated input stock is hot rolled to hot strip at a hot rolling final temperature of at least 800 °C, and - the finish-rolled hot strip is coiled at a coiler temperature of 450 °C to 700 °C.
10. The method according to Claim 9, characterized i n t h a t the hot strip is cold rolled to cold strip after the coiling.
11. The method according to Claim 10, characterized i n t h a t the cold strip is subjected to annealing at an annealing temperature of 600 °C to 1100 °C.
12. The method according to Claim 11, characterized i n t h a t the annealing is performed as hood annealing at an annealing temperature from 600 °C to 750 °C.
13. The method according to Claim 11, characterized i n t h a t the annealing is performed as continuous annealing at an annealing temperature of 750 °C to 1100 °C.
14. The method according to one of Claims 10 to 13, characterized in that the cold strip is dressed.
15. The method according to one of Claims 9 to 14, characterized in that the cold rolling is performed at a cold rolling reduction of 30 % to 75 %.
16. The method according to one of Claims 9 to 15, characterized in that blanks, which are subsequently cold formed into finished components, are produced from the respective hot or cold strip obtained.
17. The method according to Claim 16, characterized in that the cold forming is performed as flow forming.
18. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing supporting vehicle body components.
19. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing externally visible parts of vehicle bodies.
20. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing wheels for vehicles, in particular motor vehicles.
21. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing non-magnetic components.
22. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing components used in cryoengineering.
23. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing internally or externally hydroformed components.
24. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 7 for producing tubes, which are particularly intended for the production of high-strength engine parts, such as camshafts or piston rods.
25. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing components, such as armor plates, intended for protection against pulsed stresses, such as bombardment.
26. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing protection components, such as helmets and body armor, intended for protection of persons against pulsed stresses, such as bombardment.
27. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing components through flow forming.
28. A use of a steel or a steel strip or sheet steel according to one of Claims 1 to 8 for producing gear parts.
29. The use according to Claim 28, characterized in that the gear parts are provided with teeth.
30. The use according to Claim 28 or 29, characterized in that the gear parts are produced through flow forming.
CA2414138A 2001-06-13 2002-06-13 Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel Expired - Lifetime CA2414138C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10128544A DE10128544C2 (en) 2001-06-13 2001-06-13 High-strength, cold-workable sheet steel, process for its production and use of such a sheet
DE10128544.2 2001-06-13
PCT/EP2002/006480 WO2002101109A1 (en) 2001-06-13 2002-06-13 Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel

Publications (2)

Publication Number Publication Date
CA2414138A1 true CA2414138A1 (en) 2002-12-02
CA2414138C CA2414138C (en) 2012-12-11

Family

ID=7688074

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2414138A Expired - Lifetime CA2414138C (en) 2001-06-13 2002-06-13 Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel

Country Status (12)

Country Link
US (1) US20030145911A1 (en)
EP (1) EP1309734B2 (en)
JP (1) JP4227010B2 (en)
KR (1) KR100536645B1 (en)
CN (1) CN1215188C (en)
AT (1) ATE370258T1 (en)
CA (1) CA2414138C (en)
DE (2) DE10128544C2 (en)
DK (1) DK1309734T3 (en)
ES (1) ES2292762T5 (en)
PT (1) PT1309734E (en)
WO (1) WO2002101109A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004055223A1 (en) * 2002-12-17 2004-07-01 Thyssenkrupp Stahl Ag Method for producing a steel product
CN100510116C (en) * 2002-12-17 2009-07-08 蒂森克鲁伯钢铁股份公司 Method for producing a steel product
US7588651B2 (en) 2002-12-17 2009-09-15 Thyssenkrupp Steel Ag Method for producing a steel product

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CA2414138C (en) 2012-12-11
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DE10128544A1 (en) 2003-01-02
CN1215188C (en) 2005-08-17
ATE370258T1 (en) 2007-09-15
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WO2002101109A1 (en) 2002-12-19
EP1309734A1 (en) 2003-05-14

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