US20120247619A1 - Carburized steel and its process of manufacture - Google Patents

Carburized steel and its process of manufacture Download PDF

Info

Publication number
US20120247619A1
US20120247619A1 US13/064,686 US201113064686A US2012247619A1 US 20120247619 A1 US20120247619 A1 US 20120247619A1 US 201113064686 A US201113064686 A US 201113064686A US 2012247619 A1 US2012247619 A1 US 2012247619A1
Authority
US
United States
Prior art keywords
steel member
carburizing
less
cooling
layer
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.)
Abandoned
Application number
US13/064,686
Other languages
English (en)
Inventor
Koji Obayashi
Keita Taguchi
Susumu Kato
Shuji Kozawa
Manabu Kubota
Yuji Adachi
Hirokazu Sato
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.)
Aisin AW Co Ltd
Nippon Steel Corp
Original Assignee
Aisin AW 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 Aisin AW Co Ltd filed Critical Aisin AW Co Ltd
Assigned to NIPPON STEEL CORPORATION, AISIN AW CO., LTD. reassignment NIPPON STEEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ADACHI, YUJI, SATO, HIROKAZU, KUBOTA, MANABU, KOZAWA, SHUJI, KATO, SUSUMU, OBAYASHI, KOJI, TAGUCHI, KEITA
Publication of US20120247619A1 publication Critical patent/US20120247619A1/en
Assigned to NIPPON STEEL & SUMITOMO METAL CORPORATION reassignment NIPPON STEEL & SUMITOMO METAL CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: NIPPON STEEL CORPORATION
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • 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
    • C21D1/06—Surface hardening
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • 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
    • 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
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
    • 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
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • 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
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
    • 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
    • C22C38/06—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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • heat treatment including the “carburizing treatment” and the “quenching treatment” will be expressed as “carburizing and quenching treatment” in a general meaning.
  • the “carburizing and quenching treatment” is used as a term including the conventional method in which the quenching treatment is performed right after the carburizing treatment, and the carburizing, slow cooling, and high-frequency quenching treatment. When a distinction therebetween is necessary, a description will be added as such necessity arises.
  • S forms MnS in the steel and is an element to be added in order to improve cutting properties of the material because of the formation.
  • the effect obtained by the content of S is saturated when the content thereof exceeds 0.15%, and rather causes grain boundary segregation, resulting in grain boundary embrittlement. Accordingly, it is necessary to reduce the content of S to 0.15% or less.
  • the content of S should be 0.001% or more when the lower limit is defined. A more preferable range is within the range of 0.005% to 0.06%.
  • the amount of Al is less than 0.005%, the effect of preventing the austenitic structure from being coarsened is not remarkable. Accordingly, when the lower limit is defined, the amount is set to 0.005% or more. A more preferable range is 0.02% to 0.04%.
  • the basic chemical composition further contain Ti: 0.005% to 0.2%, B: 0.0006% to 0.005%.
  • the basic chemical composition further include either or both of Nb: 0.01% to 0.3% and V: 0.01% to 0.2%.
  • Ni is an element useful for improving toughness
  • the effect is insufficient when the content thereof is less than 0.1%.
  • the content exceeds 3.0%, the effect is not only saturated but also causes an increase in hardness to deteriorate cutting properties of the material, so that it is necessary to set the range within 0.1% to 3.0%.
  • the most preferable range is 0.5% to 1.5%.
  • the surface carburizing concentration of the second portion of the steel member to be obtained that is, the portion where the diffusion rate is slower than that of the first portion and the carburizing concentration of the surface after the carburizing treatment is higher than that of the first portion can be restrained within the range of 0.85 mass % or less by performing the reduced pressure carburizing treatment under the above conditions. Accordingly, the surface carburizing concentration of almost the whole surface of the portion whose surface is to be modified by the carburizing treatment of the steel member can be set within the range of 0.55 mass % to 0.85 mass %.
  • thermal exchange rate is originally slow on either of the upwind side and the downwind side by reducing the pressure of the cooling gas, so that a difference in cooling rate is difficult to occur. Accordingly, when the reduced pressure cooling in which the pressure of the cooling gas is reduced is employed, occurrence of heat treatment deformation is rare because the cooling is relatively uniformly advanced. Furthermore, even when no agitating is performed at all, in the case of a reduced pressure state, a difference of the cooling rate due to the stagnating flow of the cooling gas at different temperatures can be reduced compared with the case of the atmospheric pressure.
  • the steel member on which the reduced pressure cooling step is performed can be restrained, and the steel member can be advanced to the quenching step while keeping the size accuracy to a high accuracy.
  • the effect becomes most remarkable when slow cooling in which the cooling rate is lowered is employed as a reduced pressure slow cooling step. Accordingly, the steel member can be less deformed and highly accurately formed even after the quenching is performed, by making use of the advantages obtained by the above quenching step using the high-density energy.
  • the heating with the high-frequency heating be performed on the steel members each flowing one by one, and that the steel member be cooled by spraying cooling water toward the steel member from the periphery while rotating the steel member during cooling after the heating.
  • the steel member can be cooled evenly when the cooling is performed, and occurrence of deformation can be further restrained.
  • the carburized steel members include drive system parts of vehicles. There are severe requirements to the drive system parts of the vehicles with regard to strength and size shape accuracy in addition to cost reduction. The above-mentioned manufacturing method is very useful to satisfy the requirements.
  • heat treatment equipment 5 for performing the carburizing step to the quenching step will be simply described.
  • the steel member 8 of the example is a differential ring gear and has a first portion (a carbon readily diffused portion) and a second portion (a carbon hardly diffused portion) whose diffusion rate of carbon entering during the carburizing treatment is different from that of the first portion because of the shapes.
  • the first portion is a tooth bottom 815 and a tooth surface 811
  • the second portion in which the diffusion rate of the entering carbon is slower than that of the first portion is a tooth tip corner portion 813 (a corner portion between the tooth surface 811 and a tooth tip 812 ).
  • the condition by which the surface carburizing concentration of the tooth bottom 815 , which is the first portion becomes within the range of 0.65 ⁇ 0.05 mass % was employed.
  • the energy amount to be input was set lower than that in a condition under which normal high-frequency heating is performed, and the treatment was performed for 26.8 sec, which is relatively a long time, so that the whole interior portion of the teeth profile portion 81 became a temperature within the range of 750° C. to 960° C.
  • the fatigue testing was performed by a power circulating gearwheel testing machine.
  • Module, pressure angle, torsion angle that are the specifications of a gear under test are 2.03, 18°, and 27°, respectively.
  • Test Nos. 31 and 32 of the comparative examples are examples in which similar treatment was performed on the SCM 420 of JIS, which is conventional steel. Hardness unevenness occurred in the comparative examples because both of Cr and Mo were included and the compositions were not optimized. Furthermore, it becomes apparent, from comparison between the examples and the comparative examples, that the carburized steel members of the examples have excellent dedendum fatigue strength and other properties equivalent to or superior than those of conventional Cr—Mo alloy steel even when the contents of Cr and Mo are reduced to reduce the material cost.
  • the third layer S 3 is located inside the second layer S 2 , and the carbon concentration is 0.1 mass % to 0.4 mass %, that is, the carbon concentration of the base material (within the range of the basic chemical composition), and is a layer including no martensitic structure. It was confirmed that the third layer S 3 existed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Gears, Cams (AREA)
US13/064,686 2010-03-30 2011-04-08 Carburized steel and its process of manufacture Abandoned US20120247619A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010079437 2010-03-30
PCT/JP2011/057935 WO2011122651A1 (fr) 2010-03-30 2011-03-30 Elément d'acier cémenté et procédé de production de celui-ci

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/057935 Continuation WO2011122651A1 (fr) 2010-03-30 2011-03-30 Elément d'acier cémenté et procédé de production de celui-ci

Publications (1)

Publication Number Publication Date
US20120247619A1 true US20120247619A1 (en) 2012-10-04

Family

ID=44712345

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/064,686 Abandoned US20120247619A1 (en) 2010-03-30 2011-04-08 Carburized steel and its process of manufacture

Country Status (7)

Country Link
US (1) US20120247619A1 (fr)
EP (2) EP2505684B1 (fr)
JP (3) JP5422045B2 (fr)
KR (3) KR20140143460A (fr)
CN (2) CN102770567B (fr)
RU (2) RU2507298C1 (fr)
WO (2) WO2011122651A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8733199B2 (en) 2010-04-01 2014-05-27 Aisin Aw Co., Ltd. Gears and its process of manufacture
US20140178242A1 (en) * 2011-05-19 2014-06-26 Nippon Steel & Sumitomo Metal Corporation Non-post-heat treated steel and non-post-heat treated steel member
US20160245367A1 (en) * 2013-12-04 2016-08-25 Schaeffler Technologies AG & Co. KG Chain element
US20190022798A1 (en) * 2017-07-24 2019-01-24 Ford Motor Company Localized tempering of carburized steel
US10584812B2 (en) 2008-05-07 2020-03-10 Globalmed, Inc. Stretch hose and hose production method
US10792454B2 (en) 2017-01-30 2020-10-06 Globalmed, Inc. Heated respiratory hose assembly
US10859188B2 (en) 2009-01-15 2020-12-08 Globalmed, Inc. Stretch hose and hose production method
US10889870B2 (en) 2016-03-08 2021-01-12 Aisin Aw Co., Ltd. Steel component, gear component, and producing method for steel component
CN113631746A (zh) * 2019-03-29 2021-11-09 日本制铁株式会社 渗碳部件及其制造方法
CN116751952A (zh) * 2023-08-01 2023-09-15 重庆大学 一种中锰钢板的热处理方法

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5522105B2 (ja) * 2011-03-31 2014-06-18 アイシン・エィ・ダブリュ株式会社 鋼製歯車およびその製造方法
JP5648663B2 (ja) * 2012-09-20 2015-01-07 センサ・システム株式会社 焼入れ硬化層厚さの検査装置及びニッケルめっき皮膜厚さの検査装置
CN103343213A (zh) * 2013-07-15 2013-10-09 南京金鑫传动设备有限公司 一种薄壁齿圈的热处理方法
JP6175361B2 (ja) * 2013-12-11 2017-08-02 住友重機械工業株式会社 偏心揺動型の減速装置の偏心体軸歯車の製造方法
JP6185829B2 (ja) * 2013-12-11 2017-08-23 住友重機械工業株式会社 偏心揺動型減速装置のクランク軸および外歯歯車の製造方法
JP6287656B2 (ja) * 2014-07-14 2018-03-07 アイシン・エィ・ダブリュ株式会社 プラネタリキャリアの製造方法及びプラネタリキャリア
JP6519282B2 (ja) * 2015-03-31 2019-05-29 アイシン・エィ・ダブリュ株式会社 リングギヤの製造方法及びリングギヤ
JP6788817B2 (ja) * 2015-10-14 2020-11-25 大同特殊鋼株式会社 真空浸炭窒化部品の製造方法
US10774413B2 (en) * 2015-11-11 2020-09-15 Honeywell International Inc. Low pressure induction carburization
US11248692B2 (en) * 2016-03-11 2022-02-15 Deere & Company Composite gears and methods of manufacturing such gears
CN107287521A (zh) * 2017-06-28 2017-10-24 安徽华飞机械铸锻有限公司 一种齿轮铸造生产工艺
US20230003256A1 (en) * 2017-10-24 2023-01-05 Ntn Corporation Wheel bearing device and method for manufacturing said device
KR102153196B1 (ko) * 2018-12-18 2020-09-07 주식회사 포스코 고탄소 보론강 강재 및 그 제조방법
JP6680406B1 (ja) * 2019-01-10 2020-04-15 日本製鉄株式会社 機械部品及び機械部品の製造方法
CN114007779A (zh) * 2019-04-12 2022-02-01 Gkn烧结金属有限公司 可变扩散渗碳法
CN110904306B (zh) * 2020-01-02 2021-09-24 重庆齿轮箱有限责任公司 一种零件缩孔方法和一种零件缩孔工装
KR102462130B1 (ko) * 2020-10-26 2022-11-03 현대제철 주식회사 연화 열처리를 포함한 초고장력 열연강판의 제조방법 및 초고장력 열연강판의 제조장치
CN113549866B (zh) * 2021-07-22 2023-04-14 湖南南方宇航高精传动有限公司 风力发电机组齿轮箱滚道行星轮渗碳淬火工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310432A (en) * 1992-06-30 1994-05-10 Sumitomo Metal Industries, Ltd. Toothed wheel for use in automobiles and its manufacturing method
CN201487138U (zh) * 2009-09-11 2010-05-26 重庆克诺斯齿轮制造有限公司 用于200hp拖拉机的前驱动桥圆锥齿轮副

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139584A (en) * 1989-07-13 1992-08-18 Solo Fours Industriels Sa Carburization process
SU1759944A1 (ru) * 1991-03-29 1992-09-07 Центральный научно-исследовательский институт черной металлургии Конструкционна сталь
JP2549039B2 (ja) * 1991-09-17 1996-10-30 新日本製鐵株式会社 歪の小さい高強度歯車の浸炭窒化熱処理方法
JPH08311607A (ja) * 1995-05-16 1996-11-26 Sumitomo Metal Ind Ltd 歯元曲げ強度に優れた低歪浸炭歯車およびその製造方法
JP3269374B2 (ja) * 1996-03-06 2002-03-25 住友金属工業株式会社 浸炭歯車
US6159312A (en) * 1997-12-19 2000-12-12 Exxonmobil Upstream Research Company Ultra-high strength triple phase steels with excellent cryogenic temperature toughness
JP5319866B2 (ja) * 2004-05-24 2013-10-16 株式会社小松製作所 転動部材およびその製造方法
JP2006045585A (ja) * 2004-07-30 2006-02-16 Jfe Steel Kk 溶接構造用鋼
JP5129564B2 (ja) 2005-04-28 2013-01-30 アイシン・エィ・ダブリュ株式会社 浸炭高周波焼入部品
KR100998841B1 (ko) * 2005-09-26 2010-12-06 아이신에이더블류 가부시키가이샤 강 부재, 그 열 처리 방법, 및 그 제조 방법
DE102006039697B4 (de) * 2006-08-21 2010-07-29 SSI Schäfer Noell GmbH Lager- und Systemtechnik Vorrichtung und Verfahren zum Entladen von mit Palettenlagen beladenen Tablaren
US20090266449A1 (en) * 2008-04-25 2009-10-29 Aisin Aw Co., Ltd. Method of carburizing and quenching a steel member

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310432A (en) * 1992-06-30 1994-05-10 Sumitomo Metal Industries, Ltd. Toothed wheel for use in automobiles and its manufacturing method
CN201487138U (zh) * 2009-09-11 2010-05-26 重庆克诺斯齿轮制造有限公司 用于200hp拖拉机的前驱动桥圆锥齿轮副

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10584812B2 (en) 2008-05-07 2020-03-10 Globalmed, Inc. Stretch hose and hose production method
US10859188B2 (en) 2009-01-15 2020-12-08 Globalmed, Inc. Stretch hose and hose production method
US8733199B2 (en) 2010-04-01 2014-05-27 Aisin Aw Co., Ltd. Gears and its process of manufacture
US20140178242A1 (en) * 2011-05-19 2014-06-26 Nippon Steel & Sumitomo Metal Corporation Non-post-heat treated steel and non-post-heat treated steel member
US10087510B2 (en) * 2011-05-19 2018-10-02 Nippon Steel & Sumitomo Metal Corporation Non-post-heat treated steel and non-post-heat treated steel member
US20160245367A1 (en) * 2013-12-04 2016-08-25 Schaeffler Technologies AG & Co. KG Chain element
US11035436B2 (en) * 2013-12-04 2021-06-15 Schaeffler Technologies AG & Co. KG Chain element
US10889870B2 (en) 2016-03-08 2021-01-12 Aisin Aw Co., Ltd. Steel component, gear component, and producing method for steel component
US10792454B2 (en) 2017-01-30 2020-10-06 Globalmed, Inc. Heated respiratory hose assembly
US11052214B2 (en) 2017-01-30 2021-07-06 Globalmed, Inc. Heated respiratory hose wiring
US10730144B2 (en) * 2017-07-24 2020-08-04 Ford Motor Company Localized tempering of carburized steel
US20190022798A1 (en) * 2017-07-24 2019-01-24 Ford Motor Company Localized tempering of carburized steel
CN113631746A (zh) * 2019-03-29 2021-11-09 日本制铁株式会社 渗碳部件及其制造方法
CN116751952A (zh) * 2023-08-01 2023-09-15 重庆大学 一种中锰钢板的热处理方法

Also Published As

Publication number Publication date
KR20120102160A (ko) 2012-09-17
CN102770569A (zh) 2012-11-07
RU2012134191A (ru) 2014-02-20
EP2505684A1 (fr) 2012-10-03
JP5301728B2 (ja) 2013-09-25
EP2546381A4 (fr) 2016-12-21
WO2011122650A1 (fr) 2011-10-06
KR20120102159A (ko) 2012-09-17
RU2507298C1 (ru) 2014-02-20
WO2011122651A1 (fr) 2011-10-06
JP5842895B2 (ja) 2016-01-13
CN102770567B (zh) 2015-02-18
EP2505684B1 (fr) 2018-05-16
JP5422045B2 (ja) 2014-02-19
JP2014077198A (ja) 2014-05-01
EP2546381B1 (fr) 2018-05-02
JPWO2011122651A1 (ja) 2013-07-08
CN102770569B (zh) 2014-03-12
CN102770567A (zh) 2012-11-07
RU2518840C2 (ru) 2014-06-10
JPWO2011122650A1 (ja) 2013-07-08
KR20140143460A (ko) 2014-12-16
KR101559616B1 (ko) 2015-10-13
EP2546381A1 (fr) 2013-01-16
EP2505684A4 (fr) 2016-12-21

Similar Documents

Publication Publication Date Title
EP2546381B1 (fr) Elément d'acier cémenté et procédé de production de celui-ci
JP5958652B2 (ja) 面疲労強度に優れる軟窒化高周波焼入れ鋼部品
US8733199B2 (en) Gears and its process of manufacture
JP4385019B2 (ja) 鋼製軟窒化機械部品の製造方法
EP3378963B1 (fr) Composant en acier, composant d'engrenage et procédé permettant de fabriquer un composant en acier
JP6174140B2 (ja) ギヤおよびその製造方法
KR20120123589A (ko) 고주파 켄칭용 강, 고주파 켄칭용 조형재, 그 제조 방법 및 고주파 켄칭 강 부품
JP6950821B2 (ja) 機械部品とその製造方法
JP2018141216A (ja) 部品およびその製造方法
JP2018141218A (ja) 部品およびその製造方法
JP5754077B2 (ja) 転動疲労特性に優れた軸受鋼の製造方法および軸受鋼
JP4185997B2 (ja) 軸受部品の製造方法
US11952668B2 (en) Carburized part and method for manufacturing same
JP6414385B2 (ja) 浸炭部品
JP2019183211A (ja) 浸炭部品
JP6881498B2 (ja) 部品およびその製造方法
JP6881496B2 (ja) 部品およびその製造方法
JP6881497B2 (ja) 部品およびその製造方法
JP2018141217A (ja) 部品およびその製造方法
JP2005281780A (ja) 熱処理品およびその熱処理方法
JP2019183212A (ja) 浸炭部品

Legal Events

Date Code Title Description
AS Assignment

Owner name: NIPPON STEEL CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OBAYASHI, KOJI;TAGUCHI, KEITA;KATO, SUSUMU;AND OTHERS;SIGNING DATES FROM 20110517 TO 20110727;REEL/FRAME:026825/0549

Owner name: AISIN AW CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OBAYASHI, KOJI;TAGUCHI, KEITA;KATO, SUSUMU;AND OTHERS;SIGNING DATES FROM 20110517 TO 20110727;REEL/FRAME:026825/0549

AS Assignment

Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JAPAN

Free format text: MERGER;ASSIGNOR:NIPPON STEEL CORPORATION;REEL/FRAME:029905/0735

Effective date: 20121001

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION