EP1884573A1 - Verfahren zur Herstellung eines Stahls und bei diesem Verfahren erhaltener Stahl - Google Patents

Verfahren zur Herstellung eines Stahls und bei diesem Verfahren erhaltener Stahl Download PDF

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Publication number
EP1884573A1
EP1884573A1 EP07380044A EP07380044A EP1884573A1 EP 1884573 A1 EP1884573 A1 EP 1884573A1 EP 07380044 A EP07380044 A EP 07380044A EP 07380044 A EP07380044 A EP 07380044A EP 1884573 A1 EP1884573 A1 EP 1884573A1
Authority
EP
European Patent Office
Prior art keywords
steel
weight
manufacturing process
mechanical characteristics
toughness
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.)
Withdrawn
Application number
EP07380044A
Other languages
English (en)
French (fr)
Inventor
Kristina Urkola Etxetxipia
Beatriz Lopez Soria
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.)
Sidenor Industrial SL
Original Assignee
Gsb Acero S A
GSB Acero SA
Sidenor Industrial SL
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 Gsb Acero S A, GSB Acero SA, Sidenor Industrial SL filed Critical Gsb Acero S A
Publication of EP1884573A1 publication Critical patent/EP1884573A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • 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
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • 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
    • 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
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length

Definitions

  • the object of the invention is a process for manufacturing a steel and the steel obtained during this process.
  • the present invention is related to the novel steel compositions having average carbon and low alloy contents, for applications in which high strength and very good toughness at low temperatures are required at the same time.
  • the essential object of the present invention is to achieve high strength and improved toughness in an economical manner.
  • the advantages of the object of this invention reside in obtaining a steel having mechanical characteristics which were previously obtained with more alloy steels, by means of a concrete manufacturing process, which is also the subject of the invention and with small additions of Cr, Ni, Mo and B.
  • the steel obtained according to this invention succeeds in preserving the mechanical characteristics and improves the toughness between 20-40%, throughout the curve, of the ambient temperature at -100 ° C.
  • the steel obtained according to this invention has an average C content (0.25% -0.35% by weight), with small amounts of Cr (0.30% -0.70% by weight), Ni (0.30% -1% by weight) , and B (0'0010% -0'0050% by weight).
  • the rolling is carried out hot, between 1000 ° C and 1100 ° C and the cooling is, as usual, air.
  • the quenching (850 ° C.-900 ° C.) and the quenching (440 ° C.-500 ° C.) are then carried out in order to obtain the desired mechanical characteristics.
  • a casting having the following composition was made in% by weight: C: 0.31 If: 0.24 Mn: 1.46 Cr: 0.44 Ni: 0.44 Mo: 0.05 Ti: 0.040 B: 0.030 P: 0.008 S: 0.008
EP07380044A 2006-07-31 2007-02-20 Verfahren zur Herstellung eines Stahls und bei diesem Verfahren erhaltener Stahl Withdrawn EP1884573A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200602069A ES2293837B1 (es) 2006-07-31 2006-07-31 Proceso de fabricacion de un acero, y acero obtenido en este proceso.

Publications (1)

Publication Number Publication Date
EP1884573A1 true EP1884573A1 (de) 2008-02-06

Family

ID=38736048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07380044A Withdrawn EP1884573A1 (de) 2006-07-31 2007-02-20 Verfahren zur Herstellung eines Stahls und bei diesem Verfahren erhaltener Stahl

Country Status (2)

Country Link
EP (1) EP1884573A1 (de)
ES (1) ES2293837B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177427A (zh) * 2015-10-21 2015-12-23 攀钢集团西昌钢钒有限公司 30CrMo气瓶用钢及其生产方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625227A1 (fr) * 1987-12-23 1989-06-30 Intraviss Sn Acier allie pour boulonnerie a controle de serrage par ultrason
JPH0570890A (ja) * 1991-09-11 1993-03-23 Nippon Steel Corp 耐遅れ破壊特性に優れた高強度ボルト用鋼
EP0550294A1 (de) * 1991-12-30 1993-07-07 Ascometal Rohfabrikate grosser Länge für Herstellungsverfahren durch Kaltumformen, insbesondere für Kaltstauchen von formgebend bearbeitete Erzeugnisse wie Bolzen, und Verfahren zur Herstellung dieser kaltgeformten Gegenstände
JPH05255811A (ja) * 1992-03-09 1993-10-05 Sumitomo Metal Ind Ltd 耐火性に優れたボルトおよびナット用鋼
JPH08302445A (ja) * 1995-05-02 1996-11-19 Kobe Steel Ltd 加工性および強度の優れた含ｂ鋼および該含ｂ鋼製鍛造部品の製造方法
JPH09111399A (ja) * 1995-10-17 1997-04-28 Kawasaki Steel Corp 高強度ボルト用鋼

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940002139B1 (ko) * 1991-11-30 1994-03-18 삼성중공업 주식회사 침탄 기어 제조용 보론 처리강
FR2838137A1 (fr) * 2002-04-03 2003-10-10 Usinor Acier pour la fabrication de moules pour le moulage par injection de matieres plastiques ou pour la fabrication d'outils pour le travail des metaux
JP4812220B2 (ja) * 2002-05-10 2011-11-09 株式会社小松製作所 高硬度高靭性鋼
AT8065U1 (de) * 2005-01-14 2006-01-15 Magna Drivetrain Ag & Co Kg Stahl für einsatzgehärtete hochbeanspruchbare maschinenteile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625227A1 (fr) * 1987-12-23 1989-06-30 Intraviss Sn Acier allie pour boulonnerie a controle de serrage par ultrason
JPH0570890A (ja) * 1991-09-11 1993-03-23 Nippon Steel Corp 耐遅れ破壊特性に優れた高強度ボルト用鋼
EP0550294A1 (de) * 1991-12-30 1993-07-07 Ascometal Rohfabrikate grosser Länge für Herstellungsverfahren durch Kaltumformen, insbesondere für Kaltstauchen von formgebend bearbeitete Erzeugnisse wie Bolzen, und Verfahren zur Herstellung dieser kaltgeformten Gegenstände
JPH05255811A (ja) * 1992-03-09 1993-10-05 Sumitomo Metal Ind Ltd 耐火性に優れたボルトおよびナット用鋼
JPH08302445A (ja) * 1995-05-02 1996-11-19 Kobe Steel Ltd 加工性および強度の優れた含ｂ鋼および該含ｂ鋼製鍛造部品の製造方法
JPH09111399A (ja) * 1995-10-17 1997-04-28 Kawasaki Steel Corp 高強度ボルト用鋼

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105177427A (zh) * 2015-10-21 2015-12-23 攀钢集团西昌钢钒有限公司 30CrMo气瓶用钢及其生产方法

Also Published As

Publication number Publication date
ES2293837A1 (es) 2008-03-16
ES2293837B1 (es) 2009-04-01

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