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EP2957647A3 - Steel for cold working tool - Google Patents

Steel for cold working tool Download PDF

Info

Publication number
EP2957647A3
EP2957647A3 EP15171821.0A EP15171821A EP2957647A3 EP 2957647 A3 EP2957647 A3 EP 2957647A3 EP 15171821 A EP15171821 A EP 15171821A EP 2957647 A3 EP2957647 A3 EP 2957647A3
Authority
EP
European Patent Office
Prior art keywords
steel
cold working
working tool
less
satisfied
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
EP15171821.0A
Other languages
German (de)
French (fr)
Other versions
EP2957647B1 (en
EP2957647A2 (en
Inventor
Motohiro Ibuki
Takayuki Shimizu
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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
Priority claimed from JP2014243681A external-priority patent/JP6439227B2/en
Application filed by Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Publication of EP2957647A2 publication Critical patent/EP2957647A2/en
Publication of EP2957647A3 publication Critical patent/EP2957647A3/en
Application granted granted Critical
Publication of EP2957647B1 publication Critical patent/EP2957647B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C21D1/84—Controlled slow cooling
    • 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
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • 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
    • C22C38/06—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
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • 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
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • 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
    • C21D6/02—Hardening by precipitation

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 Articles (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The present invention relates to a steel for cold working tool, containing, on a % by mass basis: C: 0.70% to 0.90%; Si: 0.60% to 0.80%; Mn: 0.30% to 0.50%; P: 0.30% or less; S: 0.030% or less; Cu: 0.01% to 0.25%; Ni: 0.01% to 0.25%; Cr: 6.0% to 7.0%; Mo + 1/2W: 2.50% to 3.00%; V: 0.70% to 0.85%; N: 0.020% or less; O: 0.0100% or less; and Al: 0.100% or less, with the balance being Fe and inevitable impurities, in which 1.66 (Mo + 1/2W) + V < 5.7% is satisfied.
EP15171821.0A 2014-06-19 2015-06-12 Steel for cold working tool Active EP2957647B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2014125901 2014-06-19
JP2014218985 2014-10-28
JP2014243681A JP6439227B2 (en) 2014-06-19 2014-12-02 Cold work tool steel

Publications (3)

Publication Number Publication Date
EP2957647A2 EP2957647A2 (en) 2015-12-23
EP2957647A3 true EP2957647A3 (en) 2016-01-13
EP2957647B1 EP2957647B1 (en) 2017-02-15

Family

ID=53396345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15171821.0A Active EP2957647B1 (en) 2014-06-19 2015-06-12 Steel for cold working tool

Country Status (3)

Country Link
EP (1) EP2957647B1 (en)
CN (1) CN105274444B (en)
TW (1) TWI647318B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112011740B (en) * 2020-08-31 2021-11-02 天津钢研海德科技有限公司 A kind of high toughness and high hardness die steel and preparation method thereof
CN115948644A (en) * 2023-02-10 2023-04-11 攀钢集团江油长城特殊钢有限公司 A kind of manufacturing method of cold working die steel bar

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02277745A (en) * 1989-01-20 1990-11-14 Hitachi Metals Ltd High hardness and high toughness cold tool steel
JPH03134136A (en) * 1989-10-18 1991-06-07 Hitachi Metals Ltd High hardness and high toughness cold tool steel
JP2000355737A (en) * 1999-06-14 2000-12-26 Daido Steel Co Ltd Cold mold steel
JP2009132990A (en) * 2007-10-31 2009-06-18 Daido Steel Co Ltd Alloy tool steel and manufacturing method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2765392B2 (en) * 1992-08-31 1998-06-11 住友金属工業株式会社 Method for manufacturing hot-rolled duplex stainless steel strip
JP4403875B2 (en) * 2004-05-14 2010-01-27 大同特殊鋼株式会社 Cold work tool steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02277745A (en) * 1989-01-20 1990-11-14 Hitachi Metals Ltd High hardness and high toughness cold tool steel
JPH03134136A (en) * 1989-10-18 1991-06-07 Hitachi Metals Ltd High hardness and high toughness cold tool steel
JP2000355737A (en) * 1999-06-14 2000-12-26 Daido Steel Co Ltd Cold mold steel
JP2009132990A (en) * 2007-10-31 2009-06-18 Daido Steel Co Ltd Alloy tool steel and manufacturing method thereof

Also Published As

Publication number Publication date
CN105274444A (en) 2016-01-27
CN105274444B (en) 2019-03-19
EP2957647B1 (en) 2017-02-15
TW201604291A (en) 2016-02-01
EP2957647A2 (en) 2015-12-23
TWI647318B (en) 2019-01-11

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