JP2014025527A - 焼結軸受 - Google Patents
焼結軸受 Download PDFInfo
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- JP2014025527A JP2014025527A JP2012165844A JP2012165844A JP2014025527A JP 2014025527 A JP2014025527 A JP 2014025527A JP 2012165844 A JP2012165844 A JP 2012165844A JP 2012165844 A JP2012165844 A JP 2012165844A JP 2014025527 A JP2014025527 A JP 2014025527A
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- 239000000843 powder Substances 0.000 claims abstract description 81
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 238000005470 impregnation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 20
- 239000012071 phase Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 229910001562 pearlite Inorganic materials 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000005204 segregation Methods 0.000 description 5
- 238000004513 sizing Methods 0.000 description 5
- 239000011135 tin Substances 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000010191 image analysis Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910001035 Soft ferrite Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- -1 that is Chemical compound 0.000 description 2
- 230000005068 transpiration Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- HJUFTIJOISQSKQ-UHFFFAOYSA-N fenoxycarb Chemical compound C1=CC(OCCNC(=O)OCC)=CC=C1OC1=CC=CC=C1 HJUFTIJOISQSKQ-UHFFFAOYSA-N 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/128—Porous bearings, e.g. bushes of sintered alloy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
- F16C33/145—Special methods of manufacture; Running-in of sintered porous bearings
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/16—Sliding surface consisting mainly of graphite
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- 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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- 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
- F16C2240/48—Particle sizes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Powder Metallurgy (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
【解決手段】黒鉛粉と金属粉とを含む原料粉を型で成形し、その後焼結して得られる焼結軸受1において、黒鉛粉として造粒粉を用い、かつ軸受面1aにおける遊離黒鉛の割合を面積比で25%〜80%とした。前記造粒粉の平均粒径を、60μm〜500μmとした。また、原料粉における前記造粒粉の配合割合を、3重量%〜15重量%とした。
【選択図】図1
Description
銅粉としては、焼結軸受用として汎用されている球状や樹枝状の銅粉が広く使用可能であるが、本実施形態では、電解粉又は水アトマイズ粉が用いられる。なお、これらの混合粉も使用可能である。銅粉の平均粒径は、例えば40μm〜160μmとし、見かけ密度は、例えば1.5〜3.0g/cm3とする。見かけ密度の定義は、JIS Z 8901の規定に準じる(以下、同じ)。銅粉として扁平銅粉を使用することもできる。
鉄粉としては、還元鉄粉、水アトマイズ鉄粉等の公知の粉末が広く使用可能であるが、本実施形態では、還元鉄粉を使用する。還元鉄粉は、略球形でありながら不規則形状でかつ多孔質状をなし、表面に微小な凹凸を有する海綿状となることから、海綿鉄粉とも呼ばれる。鉄粉としては、例えば、平均粒径60μm〜200μm、見かけ密度2.0〜3.0g/cm3のものを使用する。なお、鉄粉に含まれる酸素量は0.2重量%以下とする。
低融点金属粉は、焼結温度よりも低融点の金属粉であり、本発明では、融点が700℃以下の金属粉、例えば錫、亜鉛、リン等の粉末が使用される。この中でも焼結時の蒸散が少ない錫が好ましい。また、錫粉としてはアトマイズ粉を使用する。これら低融点金属粉は、融点が700℃以下で焼結温度よりも低融点であり、また、焼結時の蒸散が少ない。錫粉は、銅に対して高いぬれ性を持つため、原料粉に配合することで、焼結時に、液相焼結と固相焼結が進行し、鉄組織と銅組織や銅組織同士の結合強度が強化される。
黒鉛粉としては、黒鉛の微粉を造粒し、大径化させた黒鉛造粒粉が使用される。微粉としては、鱗状又は球状の天然黒鉛粉で、平均粒径が40μm以下のものを用いる。造粒後の黒鉛粉は、平均粒径60μm〜500μmの範囲とし、見かけ密度は1.0g/cm3以下とする。造粒のためのバインダとしては、例えばフェノール樹脂を使用する。バインダの量は、黒鉛微粉に対して5重量%〜15重量%とするのが望ましい。
上記各粉末を公知の混合機で均一に混合することで原料粉が得られる。原料粉に対する黒鉛粉の配合割合は3重量%〜15重量%とする(望ましくは5重量%〜12重量%)。原料粉における低融点金属粉の配合割合は任意に定めることができ、例えば1重量%〜4重量%とする。鉄粉と銅粉の配合割合は、軸受の使用条件やコストを勘案して任意に定めることができる。
混合後の原料粉は成形機の金型3に供給される。図2に示すように、金型3は、コア3a、ダイ3b、上パンチ3c、および下パンチ3dからなり、これらによって区画されたキャビティに原料粉末が充填される。上下パンチ3c,3dを接近させて原料粉体を圧縮すると、原料粉末が、コア3aの外周面、ダイ3bの内周面、上パンチ3cの端面、および下パンチ3dの端面からなる成形面によって成形され、焼結軸受1に対応した形状(本実施形態では円筒状)の圧粉体4が得られる。
その後、圧粉体4は焼結炉にて焼結される。焼結条件は、黒鉛に含まれる炭素が鉄と反応しない(炭素の拡散が生じない)条件とする。焼結では900℃を超えてから炭素(黒鉛)と鉄の反応が始まり、パーライト相γFeが生じる。パーライト相γFeが生じると、軸受面1aに遊離する黒鉛組織の量が減少し、本発明の目的を達成できない。また、パーライト相γFeは硬い組織(HV300以上)で相手材に対する攻撃性が強いため、過剰にパーライト相が析出すると軸2の摩耗を進行させるおそれがある。
(1)金属顕微鏡((株)ニコン製ECLIPSE ME600)で撮影(100倍)。
(2)画像取得は(株)ニコン製Digital Sigaht DS−U3で行う。
(3)画像処理は(株)ニコンインストルメンツカンパニー製NIS−Elements Dで行う。
(4)デジタル画像解析ソフト(イノテック(株)製Quick Grain)で黒鉛の面積比率を算出する。
周速:V=7m/min
面圧:P=2MPa
温度:100℃
試験軸:SUS420J2(HRC=50、Ra=0.4μm)
隙間:15μm
1a 軸受面
2 軸
3 金型
4 圧粉体
Claims (6)
- 黒鉛粉と金属粉とを含む原料粉を型で成形し、その後焼結して得られる焼結軸受において、
黒鉛粉として造粒粉を用い、かつ軸受面における遊離黒鉛の割合を面積比で25%〜80%としたことを特徴とする焼結軸受。 - 前記造粒粉の平均粒径を、60μm〜500μmとした請求項1に記載の焼結軸受。
- 原料粉における前記造粒粉の配合割合を、3重量%〜15重量%とした請求項1または2に記載の焼結軸受。
- 前記造粒粉の見かけ密度を、1.0g/cm3以下とした請求項1〜3の何れか1項に記載の焼結軸受。
- 潤滑油を含浸させずに使用される請求項1〜4の何れか1項に記載の焼結軸受。
- 潤滑油を含浸させて使用される請求項1〜4の何れか1項に記載の焼結軸受。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012165844A JP6114512B2 (ja) | 2012-07-26 | 2012-07-26 | 焼結軸受およびその製造方法 |
CN201380038414.7A CN104487721B (zh) | 2012-07-26 | 2013-07-23 | 烧结轴承 |
PCT/JP2013/069847 WO2014017456A1 (ja) | 2012-07-26 | 2013-07-23 | 焼結軸受 |
US14/414,555 US10125819B2 (en) | 2012-07-26 | 2013-07-23 | Sintered bearing |
IN381DEN2015 IN2015DN00381A (ja) | 2012-07-26 | 2013-07-23 | |
EP13822555.2A EP2878839B1 (en) | 2012-07-26 | 2013-07-23 | Sintered bearing and manufacturing method thereof |
CN201710333356.0A CN107252888B (zh) | 2012-07-26 | 2013-07-23 | 烧结轴承 |
US16/145,465 US20190032714A1 (en) | 2012-07-26 | 2018-09-28 | Sintered bearing |
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EP (1) | EP2878839B1 (ja) |
JP (1) | JP6114512B2 (ja) |
CN (2) | CN107252888B (ja) |
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Cited By (3)
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WO2018021501A1 (ja) * | 2016-07-29 | 2018-02-01 | 株式会社ダイヤメット | 鉄銅基焼結含油軸受及びその製造方法 |
US10428873B2 (en) | 2016-07-29 | 2019-10-01 | Diamet Corporation | Iron-copper-based oil-impregnated sintered bearing and method for manufacturing same |
US10697495B2 (en) | 2016-07-29 | 2020-06-30 | Diamet Corporation | Iron-copper-based oil-impregnated sintered bearing and method for manufacturing same |
Families Citing this family (4)
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JP6864459B2 (ja) * | 2016-10-18 | 2021-04-28 | 株式会社ダイヤメット | 焼結含油軸受およびその製造方法 |
JP6776485B1 (ja) * | 2019-06-25 | 2020-10-28 | ミネベアミツミ株式会社 | 玉軸受 |
WO2020262029A1 (ja) | 2019-06-25 | 2020-12-30 | ミネベアミツミ株式会社 | 玉軸受 |
CN112536436B (zh) * | 2020-11-20 | 2023-04-07 | 昌河飞机工业(集团)有限责任公司 | 一种直升机用自润滑铜基粉末冶金结构件的制备方法 |
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US10428873B2 (en) | 2016-07-29 | 2019-10-01 | Diamet Corporation | Iron-copper-based oil-impregnated sintered bearing and method for manufacturing same |
US10697495B2 (en) | 2016-07-29 | 2020-06-30 | Diamet Corporation | Iron-copper-based oil-impregnated sintered bearing and method for manufacturing same |
Also Published As
Publication number | Publication date |
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EP2878839B1 (en) | 2020-06-24 |
IN2015DN00381A (ja) | 2015-06-12 |
CN104487721A (zh) | 2015-04-01 |
EP2878839A4 (en) | 2016-07-13 |
EP2878839A1 (en) | 2015-06-03 |
US10125819B2 (en) | 2018-11-13 |
US20150139847A1 (en) | 2015-05-21 |
WO2014017456A1 (ja) | 2014-01-30 |
CN107252888B (zh) | 2019-05-14 |
US20190032714A1 (en) | 2019-01-31 |
JP6114512B2 (ja) | 2017-04-12 |
CN104487721B (zh) | 2017-06-06 |
CN107252888A (zh) | 2017-10-17 |
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