DE3571254D1 - Method and steel alloy for producing high-strength hot forgings - Google Patents

Method and steel alloy for producing high-strength hot forgings

Info

Publication number
DE3571254D1
DE3571254D1 DE8585101721T DE3571254T DE3571254D1 DE 3571254 D1 DE3571254 D1 DE 3571254D1 DE 8585101721 T DE8585101721 T DE 8585101721T DE 3571254 T DE3571254 T DE 3571254T DE 3571254 D1 DE3571254 D1 DE 3571254D1
Authority
DE
Germany
Prior art keywords
forgings
forging
steel
producing high
steel alloy
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
Application number
DE8585101721T
Other languages
German (de)
Inventor
Vesa Ollilainen
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.)
Ovako Bar Oy
Original Assignee
Ovako OY
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 Ovako OY filed Critical Ovako OY
Application granted granted Critical
Publication of DE3571254D1 publication Critical patent/DE3571254D1/en
Expired 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • 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

Landscapes

  • 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)
  • Heat Treatment Of Steel (AREA)

Abstract

This invention concerns a method and a steel alloy for producing high-strength hot forgings, the forging billet being cold-sheared from cast or hot-rolled steel and the finished forging being immediately quenched from the forging temperature, machined and used without tempering. The forgings can also be assembled by fusion welding a number of parts together. For manufacturing the forging, a steel is used with the following composition: <IMAGE> the remainder being iron and the usual impurities. The tensile strength of the forgings when quenched and without tempering is at least 900 N/mm<2>, 0.2-proof stress at least 700 N/mm<2> and the impact toughness at room temperature is at least 25 J measured on a V-notched impact test-piece. The hardness of steel, when air cooled, is at most 225 HB.
DE8585101721T 1985-02-16 1985-02-16 Method and steel alloy for producing high-strength hot forgings Expired DE3571254D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85101721A EP0191873B1 (en) 1985-02-16 1985-02-16 Method and steel alloy for producing high-strength hot forgings

Publications (1)

Publication Number Publication Date
DE3571254D1 true DE3571254D1 (en) 1989-08-03

Family

ID=8193304

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585101721T Expired DE3571254D1 (en) 1985-02-16 1985-02-16 Method and steel alloy for producing high-strength hot forgings

Country Status (3)

Country Link
EP (1) EP0191873B1 (en)
AT (1) ATE44290T1 (en)
DE (1) DE3571254D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0696742B2 (en) * 1987-10-29 1994-11-30 日本鋼管株式会社 High strength / high toughness non-heat treated steel manufacturing method
FR2741632B1 (en) * 1995-11-27 1997-12-26 Ascometal Sa STEEL FOR MANUFACTURING A FORGED PART HAVING A BATH STRUCTURE AND METHOD FOR MANUFACTURING A PART
FR2756298B1 (en) * 1996-11-26 1998-12-24 Ascometal Sa STEEL AND METHOD FOR THE MANUFACTURE OF A MECHANICAL PART HAVING A BATH STRUCTURE
FR2757877B1 (en) * 1996-12-31 1999-02-05 Ascometal Sa STEEL AND PROCESS FOR THE MANUFACTURE OF A SHAPED STEEL PART BY COLD PLASTIC DEFORMATION
DE102007023309A1 (en) * 2007-05-16 2008-11-20 Benteler Stahl/Rohr Gmbh Use of a steel alloy for axle tubes and axle tube made of a steel alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE749477C (en) * 1941-12-23 1953-03-23 Edelstahlwerke A G Krefeld Deu Steel with high resistance to sudden loads
DE927213C (en) * 1942-08-12 1955-05-02 Oberhuetten Vereinigte Obersch Items made from construction steel
DE1033692B (en) * 1952-11-29 1958-07-10 Boehler & Co Ag Geb Use of naturally hard, boron-containing, molybdenum-free structural steels
DE3043439A1 (en) * 1980-11-18 1982-06-03 Volkswagenwerk Ag, 3180 Wolfsburg METHOD FOR PRODUCING A HIGHLY STRENGTH FORGED STEEL FORGED PART
JPS57137426A (en) * 1981-02-20 1982-08-25 Kawasaki Steel Corp Production of low yield ratio, high tensile hot rolled steel plate by mixed structure

Also Published As

Publication number Publication date
ATE44290T1 (en) 1989-07-15
EP0191873A1 (en) 1986-08-27
EP0191873B1 (en) 1989-06-28

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Legal Events

Date Code Title Description
8380 Miscellaneous part iii

Free format text: DER PATENTINHABER LAUTET RICHTIG: OVAKO STEEL OY AB, HELSINKI, FI

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee