JP2011067868A - 転動疲労寿命に優れた機械部品の製造方法 - Google Patents
転動疲労寿命に優れた機械部品の製造方法 Download PDFInfo
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- JP2011067868A JP2011067868A JP2010185927A JP2010185927A JP2011067868A JP 2011067868 A JP2011067868 A JP 2011067868A JP 2010185927 A JP2010185927 A JP 2010185927A JP 2010185927 A JP2010185927 A JP 2010185927A JP 2011067868 A JP2011067868 A JP 2011067868A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 238000010273 cold forging Methods 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 14
- 238000005242 forging Methods 0.000 claims description 8
- 238000012360 testing method Methods 0.000 description 11
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- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 238000009849 vacuum degassing Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- 102200082816 rs34868397 Human genes 0.000 description 1
- 102220097517 rs876659265 Human genes 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
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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
- F16C33/64—Special methods of manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/04—Making machine elements ball-races or sliding bearing races
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K21/00—Making hollow articles not covered by a single preceding sub-group
- B21K21/16—Remodelling hollow bodies with respect to the shape of the cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K23/00—Making other articles
- B21K23/04—Making other articles flanged articles
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
-
- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
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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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Forging (AREA)
- Rolling Contact Bearings (AREA)
Abstract
【解決手段】 冷間鍛造に供するリング状加工母材の内径に転動部品が転動する転動部6を有する機械部品7の製造において、転動部6を形成しようとする冷間鍛造に供するリング状加工母材の内径2aの面に少なくとも1000MPaの静水圧応力を作用させて冷間鍛造することにより、この内径2aの面に転動部品が転動する転動部6を形成してこの転動部6以外の内径2aを拡径することからなる転動疲労寿命に優れた転動部6を有するリング状の機械部品7の製造方法である。
【選択図】 図1
Description
この静水圧の作用によって、鋼中の非金属介在物と母相である鋼との界面に存在する空隙が閉鎖する方向へ向かうこととなり、転動疲労寿命に優れた機械部品を製造することができる。
冷間鍛造時に少なくとも1000MPaの静水圧応力を作用させて転動面を形成することで、鋼中に含有する非金属介在物と母相である鋼との界面に存在する空隙を閉鎖して、転動疲労寿命に優れた機械部品を製造することができる。
なお、表で示していないが、熱間鍛造により製造しても転動疲労寿命が向上する効果も確認される。しかし、本発明の冷間鍛造による方が、鋼材温度を上昇させないという点から優位である。
2 リング母材
2a 内径
2b 上端面
2c 下端面
2d 突出部
3 金型
3a 上パンチ
3b 環状上パンチ
3c 下パンチ
3d 環状下パンチ
4 空隙
5 非金属介在物
6 転動部
7 機械部品
Claims (4)
- 冷間鍛造に供するリング状加工母材の内径に転動部品が転動する転動部を有する機械部品の製造において、転動部を形成しようとする冷間鍛造に供するリング状加工母材の内径面に静水圧応力を作用させて冷間鍛造することにより、冷間鍛造に供するリング状加工母材の内径面に転動部品が転動する転動部を形成して、該転動部以外の冷間鍛造に供するリング状加工母材の内径を拡径することを特徴とする転動疲労寿命に優れた転動部を有するリング状の機械部品の製造方法。
- 請求項1に記載した冷間鍛造に供するリング状加工母材は鋼管であることを特徴とする転動疲労寿命に優れた転動部を有するリング状の機械部品の製造方法。
- 請求項1に記載した冷間鍛造に供するリング状加工母材は熱間鍛造で製作したリングであることを特徴とする転動疲労寿命に優れた転動部を有するリング状の機械部品の製造方法。
- 転動部を形成しようとする冷間鍛造に供するリング状加工母材の内径面に作用させる静水圧応力は、少なくとも1000MPaであることを特徴とする請求項1〜3のいずれか1項に記載の転動疲労寿命に優れた転動部を有するリング状の機械部品の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010185927A JP5669128B2 (ja) | 2009-08-26 | 2010-08-23 | 転動疲労寿命に優れた機械部品の製造方法 |
KR1020127003897A KR20120090942A (ko) | 2009-08-26 | 2010-08-24 | 전동 피로 수명이 뛰어난 기계 부품의 제조 방법 |
US13/390,793 US20120210765A1 (en) | 2009-08-26 | 2010-08-24 | Method for Manufacturing Mechanical Part Excellent in Rolling Fatigue Life |
PCT/JP2010/064255 WO2011024792A1 (ja) | 2009-08-26 | 2010-08-24 | 転動疲労寿命に優れた機械部品の製造方法 |
CN201080037139.3A CN102574196B (zh) | 2009-08-26 | 2010-08-24 | 滚动疲劳寿命优异的机械部件的制造方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009194962 | 2009-08-26 | ||
JP2009194962 | 2009-08-26 | ||
JP2010185927A JP5669128B2 (ja) | 2009-08-26 | 2010-08-23 | 転動疲労寿命に優れた機械部品の製造方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011067868A true JP2011067868A (ja) | 2011-04-07 |
JP2011067868A5 JP2011067868A5 (ja) | 2014-02-27 |
JP5669128B2 JP5669128B2 (ja) | 2015-02-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010185927A Active JP5669128B2 (ja) | 2009-08-26 | 2010-08-23 | 転動疲労寿命に優れた機械部品の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120210765A1 (ja) |
JP (1) | JP5669128B2 (ja) |
KR (1) | KR20120090942A (ja) |
CN (1) | CN102574196B (ja) |
WO (1) | WO2011024792A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014025008A1 (ja) * | 2012-08-10 | 2014-02-13 | 山陽特殊製鋼株式会社 | 転がり疲労寿命に優れた鋼部材 |
WO2019103039A1 (ja) * | 2017-11-24 | 2019-05-31 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
JP2019095044A (ja) * | 2017-11-24 | 2019-06-20 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
JP2019167995A (ja) * | 2018-03-22 | 2019-10-03 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5896713B2 (ja) * | 2011-12-09 | 2016-03-30 | 山陽特殊製鋼株式会社 | 転動疲労寿命に優れた機械部品の製造方法 |
US10208798B2 (en) | 2013-09-05 | 2019-02-19 | Ntn Corporation | Rolling device |
JP7060176B1 (ja) * | 2020-07-07 | 2022-04-26 | 日本精工株式会社 | 軸受要素の製造方法、軸受の製造方法、機械の製造方法、車両の製造方法、軸受要素、軸受、機械、及び車両 |
BR112023019384A2 (pt) * | 2021-03-24 | 2023-12-26 | Tata Steel Ltd | Aparelho para espessar um tubo em sua porção intermediária, tubo metálico, tubo e processo de espessamento de um tubo em sua porção intermediária |
DE102021205780A1 (de) * | 2021-06-08 | 2022-12-08 | Aktiebolaget Skf | Geschmiedeter Außenring |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0386346A (ja) * | 1989-08-28 | 1991-04-11 | Ntn Corp | 複列玉軸受外輪素形材の鍛造方法 |
JP2005219122A (ja) * | 2004-01-07 | 2005-08-18 | Sanyo Special Steel Co Ltd | 中空金属管を素材とする内周突起付きリングの製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3286498A (en) * | 1964-02-03 | 1966-11-22 | Gen Electric | Compressive forming |
CN1079715C (zh) * | 1998-06-22 | 2002-02-27 | 星龙金属株式会社 | 摆板式压缩机承接板的制造方法 |
US20020162371A1 (en) * | 2001-05-01 | 2002-11-07 | Peter Hamstra | Method of pressure-ram-forming metal containers and the like |
WO2006033327A1 (ja) * | 2004-09-22 | 2006-03-30 | Nsk Ltd. | ラジアル玉軸受用軌道輪およびその製造方法、高精度リングの製造方法及び製造装置 |
CN101184562B (zh) * | 2005-05-26 | 2011-06-22 | 昭和电工株式会社 | 开孔加工方法以及开孔加工装置 |
KR101340165B1 (ko) * | 2006-06-29 | 2013-12-10 | 테나리스 커넥션즈 아.게. | 저온에서 개선된 등방성 인성을 갖는 유압 실린더용 무계목정밀 강철 튜브 및 그것의 제조방법 |
JP4984910B2 (ja) * | 2007-01-22 | 2012-07-25 | 日本精工株式会社 | 軌道輪部材の製造方法 |
-
2010
- 2010-08-23 JP JP2010185927A patent/JP5669128B2/ja active Active
- 2010-08-24 KR KR1020127003897A patent/KR20120090942A/ko active Search and Examination
- 2010-08-24 US US13/390,793 patent/US20120210765A1/en not_active Abandoned
- 2010-08-24 WO PCT/JP2010/064255 patent/WO2011024792A1/ja active Application Filing
- 2010-08-24 CN CN201080037139.3A patent/CN102574196B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0386346A (ja) * | 1989-08-28 | 1991-04-11 | Ntn Corp | 複列玉軸受外輪素形材の鍛造方法 |
JP2005219122A (ja) * | 2004-01-07 | 2005-08-18 | Sanyo Special Steel Co Ltd | 中空金属管を素材とする内周突起付きリングの製造方法 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014025008A1 (ja) * | 2012-08-10 | 2014-02-13 | 山陽特殊製鋼株式会社 | 転がり疲労寿命に優れた鋼部材 |
WO2019103039A1 (ja) * | 2017-11-24 | 2019-05-31 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
JP2019095044A (ja) * | 2017-11-24 | 2019-06-20 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
JP7073193B2 (ja) | 2017-11-24 | 2022-05-23 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
US11421732B2 (en) | 2017-11-24 | 2022-08-23 | Ntn Corporation | Rolling component, bearing, and method of manufacturing the same |
JP2019167995A (ja) * | 2018-03-22 | 2019-10-03 | Ntn株式会社 | 転動部品、軸受およびそれらの製造方法 |
US11371559B2 (en) | 2018-03-22 | 2022-06-28 | Ntn Corporation | Rolling component, bearing, and method of manufacturing the same |
JP7240815B2 (ja) | 2018-03-22 | 2023-03-16 | Ntn株式会社 | 転動部品の製造方法および軸受の製造方法 |
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KR20120090942A (ko) | 2012-08-17 |
CN102574196B (zh) | 2016-02-10 |
CN102574196A (zh) | 2012-07-11 |
WO2011024792A1 (ja) | 2011-03-03 |
JP5669128B2 (ja) | 2015-02-12 |
US20120210765A1 (en) | 2012-08-23 |
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