CN1266911A - 一种改进的轴承钢 - Google Patents

一种改进的轴承钢 Download PDF

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Publication number
CN1266911A
CN1266911A CN00103763A CN00103763A CN1266911A CN 1266911 A CN1266911 A CN 1266911A CN 00103763 A CN00103763 A CN 00103763A CN 00103763 A CN00103763 A CN 00103763A CN 1266911 A CN1266911 A CN 1266911A
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China
Prior art keywords
bearing steel
improved bearing
steel
ring
present
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CN00103763A
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CN1102674C (zh
Inventor
伦德·托勒
拉尔松·斯塔凡
奥伦德·帕特里克
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SKF AB
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Ovako Steel AB
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Publication of CN1102674C publication Critical patent/CN1102674C/zh
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    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • 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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/902—Metal treatment having portions of differing metallurgical properties or characteristics
    • Y10S148/908—Spring
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S384/00—Bearings
    • Y10S384/90—Cooling or heating
    • Y10S384/912—Metallic

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

一种适于制造厚壁环的改进的轴承钢,含有(以重量百分比计):1.00—1.10的C;最多为0.15的Si;1.35—1.65的Mn;1.70—1.90的Cr;1.00—1.15的Ni;0.40—0.50的Mo;最多为0.30的Cu;0.015—0.050的Al,其余部分是Fe以及正常的残余元素和杂质。

Description

一种改进的轴承钢
本发明涉及一种改进的轴承钢，更具体地说是涉及一种使诸如大的滚柱轴承环这样的厚壁元件的淬透可以实现的轴承钢。
目前，在滚柱轴承元件的生产中采用的具有可能达到的最好的淬透性的钢是根据DIN 100CrMo74的钢，包含0.92-1.05％的C，0.25-0.4％的Si，0.6-0.8％的Mn，1.65-1.95％的Cr，以及0.4-0.5％的Mo。
在制造诸如壁厚为200mm及以上的大型滚柱轴承环这样的厚壁元件的生产中，如果要完全实现元件的淬透是非常困难的。在淬火过程中芯部将是不稳固的，由此造成元件的大的变形，也使元件的强度降低。这些大的变形迫使将元件生产成具有允许将元件研磨到所需尺寸和平直度的尺寸。一个环的研磨可能需多达两星期，这大大增加了成本。
一般地，为了提高淬透性，增加有生成碳化物的元素，如Cr和Mo。然而，由于轴承钢的高碳含量，不能不过量生成易熔碳化物地再加入Cr和Mo，这些过量生成的易熔碳化物在芯部中偏析并且富集于芯部中，导致气孔的产生。为了能够生产尺寸稳定的、可淬透的厚壁元件，需要一种改进的轴承钢。
本发明的主要目的是通过提供一种适用于生产用于滚柱轴承的淬透的厚壁元件的改进轴承钢来消除上述问题。
该目的是通过本发明的改进的轴承钢而实现的，该轴承钢含有以重量百分比为单位的下述成分：
C      1.00-1.10
Si     最多0.15
Mn     1.35-1.65
Cr     1.70-1.90
Ni     1.00-1.15
Mo     0.40-0.50
Cu     最多0.30
Al    0.015-0.050
基余部分是Fe以及正常的残余元素和杂质。
采用本发明的轴承钢，消除了现有技术中的问题，并且所得到的淬透性的改善使得壁厚大大超过200mm的元件可以被淬透。
根据本发明，Cr和Mo的含量保持与传统上用于大横截面的等级为100CrMo74中Cr和Mo的含量基本相同。Ni被以重量百分比为1.00-1.15的量加入。Mn的含量被增加到1.35-1.65重量百分比，而根据现有技术，Mn的浓度为0.35-0.45重量百分比。Ni和Mn不形成碳化物，因此不会增加在凝固过程中析出有害的一次碳化物的危险。
此外，Si的含量与100CrMo74相比已被降低到0.15重量百分比。通过降低Si的含量，提高了贝氏体的转变速率。与Ni和Mn相比，Si对贝氏体的转变速率有很大的影响。较低的Si含量将在一定程度上抵消由增加的合金含量而引起的转变时间的增加。
测试结果
在一对比试验中，分别用钢100CrMo74和本发明的钢制造壁厚约为200mm的环。
将两种环淬火后，用传统的钢制造的环产生约2mm的变形，而用本发明的钢制造的环呈现出大约为10μm的变形。
当测试两种环的淬透性时，用100CrMo74制造的环在环壁中间的硬度为45HRc，而用本发明的钢制造的环沿整个壁厚的硬度全部为57HRc。
实例
对壁厚为190mm的内环进行测试。
所得到的组织为细晶粒贝氏体。
与用传统上采用的材料所得到的49-53HRc的硬度水平相比较，所得到的硬度为57-58HRc。
由于淬火而引起了各向同性体积的增加，而这导致了均匀的削磨余量，这与传统的产生每米0.15mm的不合格偏心运转的方案相反，该偏心运转与最高可达2.5mm的环的变形一起导致了很长的研磨时间，并且在许多情况下，在研磨后，将存在脱离热滚压表面的材料去除不足的情况。

Claims (1)

1.一种改进的轴承钢，包含(以重量百分比计)：
C    1.00-1.10
Si   最多0.15
Mn   1.35-1.65
Cr   1.70-1.90
Ni   1.00-1.15
Mo   0.40-0.50
Cu   最多0.30
Al   0.015-0.050
其余部分是Fe以及正常的残余元素和杂质。
CN00103763A 1999-03-10 2000-03-09 一种改进的轴承钢 Expired - Fee Related CN1102674C (zh)

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SE99008633 1999-03-10
SE9900863A SE513343C2 (sv) 1999-03-10 1999-03-10 Lagerstål

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CN1266911A true CN1266911A (zh) 2000-09-20
CN1102674C CN1102674C (zh) 2003-03-05

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US (1) US6284065B1 (zh)
EP (1) EP1035226B1 (zh)
JP (1) JP2000256796A (zh)
CN (1) CN1102674C (zh)
DE (1) DE60000190T2 (zh)
SE (1) SE513343C2 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251197A (zh) * 2010-05-20 2011-11-23 宝山钢铁股份有限公司 一种高碳铬轴承钢及其制造方法
CN103168112A (zh) * 2010-08-31 2013-06-19 杰富意钢铁株式会社 滚动接触疲劳寿命特性优异的轴承钢、轴承用铸锭件以及它们的制造方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103547696A (zh) * 2011-05-17 2014-01-29 Skf公司 改进型轴承钢
DE102017216762A1 (de) * 2017-09-21 2019-03-21 Thyssenkrupp Ag Werkstoff und Herstellungsverfahren für Wälzlagerkomponenten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929523A (en) * 1972-10-16 1975-12-30 Nippon Steel Corp Steel suitable for use as rolling elements
JP3556968B2 (ja) * 1994-06-16 2004-08-25 新日本製鐵株式会社 高炭素系高寿命軸受鋼
JP3538995B2 (ja) * 1994-09-29 2004-06-14 日本精工株式会社 転がり軸受
JP3646467B2 (ja) * 1996-07-31 2005-05-11 日本精工株式会社 転がり軸受
SE9702851D0 (sv) * 1997-08-01 1997-08-01 Ovako Steel Ab Vanadium alloyed bearing steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251197A (zh) * 2010-05-20 2011-11-23 宝山钢铁股份有限公司 一种高碳铬轴承钢及其制造方法
CN102251197B (zh) * 2010-05-20 2013-01-23 宝山钢铁股份有限公司 一种高碳铬轴承钢及其制造方法
CN103168112A (zh) * 2010-08-31 2013-06-19 杰富意钢铁株式会社 滚动接触疲劳寿命特性优异的轴承钢、轴承用铸锭件以及它们的制造方法
US9139887B2 (en) 2010-08-31 2015-09-22 Jfe Steel Corporation Bearing steel and ingot material for bearing having excellent rolling contact fatigue life characteristics and method for manufacturing the same

Also Published As

Publication number Publication date
CN1102674C (zh) 2003-03-05
DE60000190T2 (de) 2002-10-31
SE9900863D0 (sv) 1999-03-10
SE9900863L (sv) 2000-08-28
JP2000256796A (ja) 2000-09-19
EP1035226A1 (en) 2000-09-13
US6284065B1 (en) 2001-09-04
SE513343C2 (sv) 2000-08-28
DE60000190D1 (de) 2002-07-11
EP1035226B1 (en) 2002-06-05

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