WO2000028100A1 - Acier pour roulements presentant une excellente resistance au roulement - Google Patents

Acier pour roulements presentant une excellente resistance au roulement Download PDF

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Publication number
WO2000028100A1
WO2000028100A1 PCT/JP1999/005986 JP9905986W WO0028100A1 WO 2000028100 A1 WO2000028100 A1 WO 2000028100A1 JP 9905986 W JP9905986 W JP 9905986W WO 0028100 A1 WO0028100 A1 WO 0028100A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
less
fatigue life
rolling fatigue
steel
Prior art date
Application number
PCT/JP1999/005986
Other languages
English (en)
Japanese (ja)
Inventor
Takuya Atsumi
Toshiyuki Hoshino
Keniti Amano
Satoshi Yasumoto
Masao Gotoh
Original Assignee
Kawasaki Steel Corporation
Koyo Seiko 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 Kawasaki Steel Corporation, Koyo Seiko Co., Ltd. filed Critical Kawasaki Steel Corporation
Priority to CA002317658A priority Critical patent/CA2317658A1/fr
Priority to KR10-2000-7007005A priority patent/KR100508463B1/ko
Priority to EP99951124A priority patent/EP1048744A4/fr
Publication of WO2000028100A1 publication Critical patent/WO2000028100A1/fr

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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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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

Definitions

  • the present invention relates to bearing steel used as an element member of a rolling bearing such as a roller bearing or a ball bearing.
  • a rolling bearing such as a roller bearing or a ball bearing.
  • it is a bearing steel for providing bearing members with excellent rolling fatigue life.
  • Bearing steel used for rolling bearings and the like is required to have a long rolling fatigue life.
  • hard oxide nonmetallic inclusions present in steel have an adverse effect on the rolling contact fatigue life of bearings.
  • JP-A-3-126839 discloses a method of adjusting the number of oxide-based nonmetallic inclusions in a unit area or a unit volume, that is, a method of adjusting their distribution.
  • extreme value statistics A method of adjusting the predicted maximum diameter of oxide-based nonmetallic inclusions estimated by the above, that is, a method of adjusting these forms is disclosed. In each case, the distribution or form other than the amount of the oxide-based nonmetallic inclusions is adjusted to reduce the influence of the oxide-based nonmetallic inclusions.
  • JP-A-10-68047 JP-A-10-158790, JP-A-10-168547 and the like.
  • a method for controlling sulfide-based nonmetallic inclusions, which are hard nonmetallic inclusions other than oxides is disclosed in Japanese Patent Application Laid-Open No. 9-291340 (PCT / JP97 / 00549).
  • PCT / JP97 / 00549 Japanese Patent Application Laid-Open No. 9-291340
  • the aim is to reduce substances that can cause fatigue fracture.
  • steel containing Si or A1 as a deoxidizing agent is targeted, and the formation of Si or A1 oxide is inevitable, and the rolling fatigue life varies, and its improvement is limited.
  • a main object of the present invention is to provide a bearing steel that can be manufactured only by adjusting the component composition, is advantageous in terms of productivity, and has an excellent rolling fatigue life. Disclosure of the invention
  • the present invention has been made to achieve the above in view of the above-mentioned objects.
  • Most According to recent steelmaking technology even when Si and A1 are not added as deoxidizers, when C is included at about 1 mass%, O can be reduced to about 0.0010 mass%.
  • the improvement of hardenability and the improvement of rolling fatigue life by adding Si or A1 can be replaced by adding a large amount of Cr. Therefore, the inventors examined the effect of impurity elements using a material containing about lmass% of C, not containing Si and A1, reducing ⁇ to about lOppm, and using a material containing a large amount of Cr. As a result, they found that the presence of Sb as an impurity element in steel had an adverse effect on rolling fatigue life.
  • the gist configuration of the present invention developed based on the above knowledge is as follows.
  • C 0.95 to 1.10 mass%, Cr: more than 1.60 to 3.5 mass%, O: less than 0.0015 mass% and Sb: less than 0.0010 mass%, balance Fe and unavoidable impurities
  • It is a bearing steel excellent in rolling fatigue life characterized by comprising: In addition, Si: 2.5 mass% or less, Mn: 2.5 mass% or less, Mo: 2.5 mass% or less, i: 3.0 mass% or less, Nb: 1.5 mass% or less, V: One or two selected from 1.5 mass% or less, Cu: 2. mass% or less and A1: 0.08 mass% or less More than one species may be included.
  • C is an element that forms a solid solution in the matrix and effectively acts to strengthen martensite. It is included to secure the strength after quenching and tempering and to improve the rolling fatigue life due to it. If the content is less than 0.95 mass ° / o, these effects cannot be obtained. On the other hand, if the C content exceeds 1.10raass%, giant carbides will be generated during fabrication, reducing workability and rolling fatigue life. Therefore, the range is 0.95 to 1.10 mass%.
  • the Cr content is set to be more than 1.60 to 3.50 raass%, preferably more than 1.60 to 2.50 mass%. O: 0.0015 mass% or less
  • O is desirably low because it forms hard oxide-based nonmetallic inclusions and reduces the rolling fatigue life, but is allowable up to 0.0015 mass ° / o. Therefore, the O content is 0.0015 mass% or less, and preferably 0.0010 mass% or less. Sb: 0.0001 mass% or less
  • Sb is a particularly important element in the present invention. This is preferable in that it has the effect of suppressing the formation of a decarburized layer and improving the heat treatment productivity. However, it reduces the hot workability and toughness and significantly reduces the rolling fatigue life. Therefore, Sb The amount must be limited to 0.000010 mass% or less. Further, one or more of the following elements can be contained.
  • Si is an element that increases tempering softening resistance. As a result, the strength after quenching and tempering is increased, and the rolling fatigue life is improved. It is also an element that contributes to the reduction of oxygen in steel as a deoxidizing agent during smelting. However, if added in excess of 2.5 mass%, workability and toughness decrease. For this reason, Si is added at 2.5 ma ss% or less. Preferably, it is added in the range of 0.15 to 2.0 mass%. Mn: 2.5 mass% or less
  • Mn is an element that improves the hardenability of steel. As a result, the toughness and strength of the base martensite are improved, and the rolling fatigue life is improved. However, when added in excess of 2.5 mass%, machinability and toughness decrease. For this reason, Mn is added at 2.5 mass% or less. Preferably, it is added in the range of 0.10 to 2.0 mass%.
  • Mo is an element that improves hardenability. As a result, the strength is improved and the rolling fatigue life is improved. However, adding more than 2.5 mass% stabilizes the carbides. As a result, the strength is reduced and the rolling fatigue life is reduced. Mo is also an expensive element. Therefore, Mo is added at 2.5 mass% or less. Preferably, it is added in the range of 0.10 to 1.5 mass%.
  • Ni is an element that improves hardenability. As a result, the strength is improved and the rolling fatigue life is improved. However, the effect of adding over 3.0 mass% Saturated. Ni is also an expensive element. Therefore, Ni is added in an amount of not more than 3.0 mass% in consideration of the obtained effect and cost. Preferably, it is added in the range of 0.1 to 2.0 mass%.
  • Nb is an element that improves hardenability. As a result, the strength is improved and the rolling fatigue life is improved. However, if added in excess of 1.5 mass%, the carbohydrate is stabilized. As a result, the strength is reduced and the rolling fatigue life is reduced. Nb is also an expensive element. Therefore, Nb is added at 1.5 mass% or less. Preferably, it is added in the range of 0.05 to 1.0 mass%.
  • V is an element that improves hardenability. As a result, the strength is improved and the rolling fatigue life is improved. However, if added in excess of 1.5 mass%, the carbohydrate is stabilized. As a result, the strength is reduced and the rolling fatigue life is reduced. V is also an expensive element. Therefore, V is added at 1.5 mass% or less. Preferably, it is added in the range of 0.05 to 1.0 mass%.
  • Cu is an element that improves hardenability. As a result, the strength is improved and the rolling fatigue life is improved. However, if added in excess of 2.0 raass%, the forgeability decreases. Therefore, Cu is added at 2.0 mass% or less. Preferably, it is added in the range of 0.10 to 1.5 mass%.
  • A1 0.08 mass ° / o or less
  • A1 is an element that increases tempering softening resistance. As a result, the strength after quenching and tempering is increased, and the rolling life is improved. It is also an element that contributes to the reduction of oxygen in steel as a deoxidizer during smelting. On the other hand, if added in excess of 0.08 mass ° / o , workability and toughness are reduced. Therefore, A1 is 0.08mass% Add below. Preferably, it is added in the range of 0.005 to 0.05 mass%. Although the present invention is constituted by each of the above elements, as a more preferred embodiment, it is desirable that P, S, Ti and N as the impurity elements be suppressed to the following ranges.
  • the allowable upper limit is 0.025 mass%, preferably 0.015 mass%.
  • the allowable upper limit is 0.025 mass%, preferably 0.010 mass%.
  • Ti forms hard nitrides and reduces the rolling fatigue life. Therefore, it is desirable to be as low as possible.
  • the allowable upper limit is 0.001 raass%, preferably 0.005 raass%.
  • N forms hard nitrides and reduces the rolling fatigue life. Therefore, it is desirable to be as low as possible.
  • the allowable upper limit is 0.015 mass%, preferably 0.008 raass%.
  • FIG. 1 is a graph showing the effect of the amount of Sb on the B10 life.
  • the rolling fatigue test was carried out using a forest-type thrust rolling fatigue tester under the following conditions: Hertz maximum contact stress: 5260 MPa, cyclic stress number: 30 Hz, and lubricating oil: # 68 turbine oil.
  • the test results were summarized on a probability paper according to the Weibull distribution, and the B10 life (cumulative failure probability: the total number of loads until peeling occurred at 10%) was determined.
  • the life ratio of steel 1 JIS steel type: SUJ2
  • SUJ2 which is a conventional steel
  • the steel 4 as the comparative steel has C and the steel 5 has O, which is out of the range of the present invention, and the B10 life ratio is inferior to the conventional steel.
  • steel 3 as the comparative steel does not differ much from steel 2 as the invention steel except for the chemical composition of Sb. Nevertheless, the B10 life ratio of steel 3 is 1.1, which is inferior to 3.2 of steel 2. Clearly, the effect of reducing the amount of Sb is apparent. Chemical composition of test material (mass%) B,. Life ratio
  • a bearing steel having significantly superior rolling fatigue life can be obtained only by adjusting the composition by adding a large amount of Cr and suppressing the amount of Sb in the steel to 0.0010 mass% or less. be able to. Limiting the amount of Sb can be easily achieved by managing scrap, which is favorable in terms of productivity and greatly contributes to the industry.

Abstract

L'invention concerne un acier pour roulements présentant une excellente résistance au roulement et permettant de réaliser un élément pour paliers du type roulement à galets et roulement à billes. Cet acier contient entre 0,95 et 1,1 % en masse de C, entre 1,6 à 3,5 % en masse de Cr, jusqu'à 0,0015 % en masse de O, jusqu'à 0,001 % en masse de Sb, ainsi que les composants résiduels du Fe et des impuretés inévitables. Cet acier peut également contenir l'un au moins des composants d'un groupe constitué de jusqu'à 2,5 % en masse de Si, jusqu'à 2,5 % en masse de Mn, jusqu'à 2,5 % en masse de Mo, jusqu'à 3 % en masse de Ni, jusqu'à 1,5 % en masse de Nb, jusqu'à 1,5 % en masse de V, jusqu'à 2 % en masse de Cu et jusqu'à 0,08 % en masse d'Al.
PCT/JP1999/005986 1998-11-10 1999-10-28 Acier pour roulements presentant une excellente resistance au roulement WO2000028100A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002317658A CA2317658A1 (fr) 1998-11-10 1999-10-28 Acier pour roulements presentant une excellente resistance au roulement
KR10-2000-7007005A KR100508463B1 (ko) 1998-11-10 1999-10-28 구름피로수명이 우수한 베어링용 강
EP99951124A EP1048744A4 (fr) 1998-11-10 1999-10-28 Acier pour roulements presentant une excellente resistance au roulement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/318795 1998-11-10
JP31879598A JP3779078B2 (ja) 1998-11-10 1998-11-10 転動疲労寿命に優れる軸受用鋼

Publications (1)

Publication Number Publication Date
WO2000028100A1 true WO2000028100A1 (fr) 2000-05-18

Family

ID=18103038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/005986 WO2000028100A1 (fr) 1998-11-10 1999-10-28 Acier pour roulements presentant une excellente resistance au roulement

Country Status (6)

Country Link
EP (1) EP1048744A4 (fr)
JP (1) JP3779078B2 (fr)
KR (1) KR100508463B1 (fr)
CA (1) CA2317658A1 (fr)
TW (1) TW454042B (fr)
WO (1) WO2000028100A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009082107A1 (fr) * 2007-12-20 2009-07-02 Posco Tige de fil d'acier pour acier à roulements, procédé de fabrication de tige de fil d'acier pour acier à roulements, procédé de traitement thermique de roulements en acier, roulements en acier et procédé de trempage d'acier à roulements

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3889931B2 (ja) * 2001-01-26 2007-03-07 Ｊｆｅスチール株式会社 軸受材料
JP4586313B2 (ja) * 2001-07-31 2010-11-24 Ｊｆｅスチール株式会社 二次加工性に優れた高炭素継目無鋼管の製造方法
JP4252837B2 (ja) * 2003-04-16 2009-04-08 Ｊｆｅスチール株式会社 転動疲労寿命の優れた鋼材及びその製造方法
JP5857433B2 (ja) * 2011-04-14 2016-02-10 日本精工株式会社 転がり案内装置の製造方法
CN102399533A (zh) * 2011-09-26 2012-04-04 宁国市东方碾磨材料有限责任公司 耐磨耐腐蚀纳米研磨材料及其制备方法
JP5810867B2 (ja) * 2011-11-25 2015-11-11 新日鐵住金株式会社 軸受鋼
EP2794174A4 (fr) * 2011-12-20 2016-01-20 Skf Ab Procédé de production d'un élément en acier par soudage en bout par étincelage, et un élément obtenu selon ce procédé
KR20140107289A (ko) * 2011-12-20 2014-09-04 아크티에볼라게트 에스케이에프 방법, 링 및 베어링
JP6056647B2 (ja) * 2012-06-28 2017-01-11 Ｊｆｅスチール株式会社 軸受鋼の製造方法およびその製造方法で得られる軸受鋼
CN103045957B (zh) * 2013-01-06 2015-07-22 奉化市金燕钢球有限公司 一种高碳铬不锈轴承钢
CN104087866B (zh) * 2014-07-31 2016-04-06 宁国市宁武耐磨材料有限公司 一种球磨机用高耐热耐磨球
CN104109794B (zh) * 2014-08-01 2016-06-01 宁国市宁武耐磨材料有限公司 一种中铬多元合金耐磨球
CN105296838A (zh) * 2015-10-22 2016-02-03 宁国市南方耐磨材料有限公司 一种高硬高韧耐磨球
CN108559913A (zh) * 2018-05-16 2018-09-21 浙江健力股份有限公司 一种GCr15轴承钢管及其制备工艺
US11788579B2 (en) 2020-02-17 2023-10-17 Nsk Ltd. Rolling bearing and method for producing same
CN112111696A (zh) * 2020-09-29 2020-12-22 钢铁研究总院 高等向性和长接触疲劳寿命的高碳轴承钢及制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06271982A (ja) * 1993-03-23 1994-09-27 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受鋼
JPH06287693A (ja) * 1993-03-30 1994-10-11 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受鋼
JPH0892689A (ja) * 1994-09-21 1996-04-09 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受用鋼
JPH10158790A (ja) * 1996-12-06 1998-06-16 Kawasaki Steel Corp 軸受用鋼

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649589A (ja) * 1992-07-29 1994-02-22 Nkk Corp 冷間成形用軸受鋼
JP3383347B2 (ja) * 1993-03-30 2003-03-04 川崎製鉄株式会社 熱処理生産性ならびに繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受鋼
JP3243330B2 (ja) * 1993-03-30 2002-01-07 川崎製鉄株式会社 繰り返し応力負荷によるミクロ組織変化の遅延特性と熱処理生産性とに優れた軸受鋼
JPH0711386A (ja) * 1993-06-25 1995-01-13 Nkk Corp 冷間成形用軸受鋼
JP3411388B2 (ja) * 1994-05-27 2003-05-26 川崎製鉄株式会社 熱処理生産性ならびに繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受部材
JP3338761B2 (ja) * 1996-02-29 2002-10-28 川崎製鉄株式会社 軸受材料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06271982A (ja) * 1993-03-23 1994-09-27 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受鋼
JPH06287693A (ja) * 1993-03-30 1994-10-11 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受鋼
JPH0892689A (ja) * 1994-09-21 1996-04-09 Kawasaki Steel Corp 繰り返し応力負荷によるミクロ組織変化の遅延特性に優れた軸受用鋼
JPH10158790A (ja) * 1996-12-06 1998-06-16 Kawasaki Steel Corp 軸受用鋼

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1048744A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009082107A1 (fr) * 2007-12-20 2009-07-02 Posco Tige de fil d'acier pour acier à roulements, procédé de fabrication de tige de fil d'acier pour acier à roulements, procédé de traitement thermique de roulements en acier, roulements en acier et procédé de trempage d'acier à roulements
US9593389B2 (en) 2007-12-20 2017-03-14 Posco Steel wire rod for bearing steel, manufacturing method of steel wire rod for bearing steel, heat treatment method of steel bearing, steel bearing and soaking method of bearing steel

Also Published As

Publication number Publication date
TW454042B (en) 2001-09-11
KR20010033504A (ko) 2001-04-25
JP2000144326A (ja) 2000-05-26
EP1048744A4 (fr) 2001-02-28
KR100508463B1 (ko) 2005-08-17
JP3779078B2 (ja) 2006-05-24
CA2317658A1 (fr) 2000-05-18
EP1048744A1 (fr) 2000-11-02

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