CA2137744A1 - Steel for Carburized Gear - Google Patents

Steel for Carburized Gear

Info

Publication number
CA2137744A1
CA2137744A1 CA2137744A CA2137744A CA2137744A1 CA 2137744 A1 CA2137744 A1 CA 2137744A1 CA 2137744 A CA2137744 A CA 2137744A CA 2137744 A CA2137744 A CA 2137744A CA 2137744 A1 CA2137744 A1 CA 2137744A1
Authority
CA
Canada
Prior art keywords
steel
carburized
quenching
tempering
carburization
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
CA2137744A
Other languages
French (fr)
Other versions
CA2137744C (en
Inventor
Kazuo Sakamoto
Tatsuo Fukuzumi
Hideo Ueno
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.)
Mitsubishi Steel Mfg Co Ltd
Original Assignee
Mitsubishi Steel Mfg 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
Application filed by Mitsubishi Steel Mfg Co Ltd filed Critical Mitsubishi Steel Mfg Co Ltd
Publication of CA2137744A1 publication Critical patent/CA2137744A1/en
Application granted granted Critical
Publication of CA2137744C publication Critical patent/CA2137744C/en
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
    • C22C38/18—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
    • C22C38/001—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
    • C22C38/02—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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

A steel for carburized gear having softening resistance, consisting essentially of, in weight percentages, 0.18 to 0.25% C, 0.45 to 1.00% Si, 0.40 to 0.70% Mn, 0.30 to 0.70% Ni, 1.00 to 1.50% Cr, 0.30 to 0.70% Mo, up to 0.50% Cu, 0.015 to 0.030% Al, 0.03 to 0.30% V, 0.010 to 0.030% Nb, up to 0.0015% O, 0.0100 to 0.0200% N and the balance consisting of Fe and inevitable impurity elements, wherein quenching at 820°C or higher after carburization does not cause any ferrite to be formed in a hardened structure of the core part of the carburized steel, and wherein, while tempering is generally performed at 160 to 180°C after the quenching, reheating at any of temperatures inclusive of the tempering temperature and up to 300°C
does not cause the hardness of a carburized case of the carburized steel to decrease by HV 50 or more from the one after the carburization, quenching and tempering.
CA002137744A 1994-02-03 1994-12-09 Steel for carburized gear Expired - Lifetime CA2137744C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6-30852 1994-02-03
JP3085294 1994-02-03

Publications (2)

Publication Number Publication Date
CA2137744A1 true CA2137744A1 (en) 1995-08-04
CA2137744C CA2137744C (en) 1999-08-31

Family

ID=12315250

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002137744A Expired - Lifetime CA2137744C (en) 1994-02-03 1994-12-09 Steel for carburized gear

Country Status (2)

Country Link
KR (1) KR0141048B1 (en)
CA (1) CA2137744C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110284071A (en) * 2019-08-02 2019-09-27 宜兴市佳信数控科技有限公司 A kind of rotary kiln super large gear and preparation method thereof
CN112689686A (en) * 2018-09-12 2021-04-20 大同特殊钢株式会社 High surface pressure resistant member and method for manufacturing same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010066189A (en) * 1999-12-31 2001-07-11 이계안 Highly carbon carburizing steel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112689686A (en) * 2018-09-12 2021-04-20 大同特殊钢株式会社 High surface pressure resistant member and method for manufacturing same
CN112689686B (en) * 2018-09-12 2022-08-30 大同特殊钢株式会社 High surface pressure resistant member and method for manufacturing same
CN110284071A (en) * 2019-08-02 2019-09-27 宜兴市佳信数控科技有限公司 A kind of rotary kiln super large gear and preparation method thereof

Also Published As

Publication number Publication date
KR0141048B1 (en) 1998-07-15
KR950025113A (en) 1995-09-15
CA2137744C (en) 1999-08-31

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20141209