JPS63195416A - Porous slide bearing and its manufacture - Google Patents
Porous slide bearing and its manufactureInfo
- Publication number
- JPS63195416A JPS63195416A JP2875787A JP2875787A JPS63195416A JP S63195416 A JPS63195416 A JP S63195416A JP 2875787 A JP2875787 A JP 2875787A JP 2875787 A JP2875787 A JP 2875787A JP S63195416 A JPS63195416 A JP S63195416A
- Authority
- JP
- Japan
- Prior art keywords
- grease
- bearing
- thickener
- oil
- solid
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000004519 grease Substances 0.000 claims abstract description 40
- 239000002562 thickening agent Substances 0.000 claims abstract description 33
- 239000011148 porous material Substances 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000010687 lubricating oil Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000002199 base oil Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 14
- 239000000344 soap Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000005069 Extreme pressure additive Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000019239 indanthrene blue RS Nutrition 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- VPJDULFXCAQHRC-UHFFFAOYSA-N prop-2-enylurea Chemical compound NC(=O)NCC=C VPJDULFXCAQHRC-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 0.000 description 1
- -1 terephthalamate Chemical compound 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- F16C33/102—Construction relative to lubrication with grease as lubricant
-
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は多孔質滑り軸受およびその製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a porous sliding bearing and a method for manufacturing the same.
多孔質滑り軸受はその細孔（空孔、気孔などとも呼ばれ
る）に潤滑油を保有し、滑り面に油を少しずつ供給する
ことによって軸受の長期使用を可能にしているが、使用
中の温度上昇などにより必要以上に油が滲出し、その結
果軸受寿命を短縮したり、滲出部による周辺の汚染を起
こしたりする。Porous sliding bearings retain lubricating oil in their pores (also called pores, pores, etc.) and supply oil little by little to the sliding surface, enabling long-term use of the bearing, but the temperature during use Due to rising, etc., oil leaks out more than necessary, resulting in shortened bearing life and contamination of the surrounding area due to the leaking part.
そこで必要以上の油の滲出を防ぐため、油の粘度を高く
したり、多孔質素材の焼結合金の細孔径を小さくしたり
することが考えられる。しかし、前者すなわち油の粘度
を高くすることは起動トルクが増大したり、低温におけ
る使用が困難となったりして好ましくなく、また後者す
なわち細孔径を小さくすることは孔径を精度良く制御す
ることが非常に困難で、しかも油保有量も少なくなって
好ましくない。Therefore, in order to prevent oil from seeping out more than necessary, it is possible to increase the viscosity of the oil or to reduce the pore diameter of the porous sintered alloy. However, the former, i.e., increasing the viscosity of the oil, is undesirable because it increases the starting torque and makes it difficult to use at low temperatures, and the latter, i.e., decreasing the pore diameter, makes it difficult to accurately control the pore diameter. This is extremely difficult and is also undesirable as it reduces the amount of oil retained.
このような潤滑油に代えて、半固体状のグリースの使用
が考えられるが、通常グリースは基油と増稠剤とからな
っていて、増稠剤には高級脂肪酸の金属塩、各種の表面
処理された粘土、シリカなどの無機系微細粉末、アリル
ウレア、ポリウレアなどのウレア化合物類、テレフタラ
メート、インダンスレン、フタロシアニン、アメリン、
フッ素化合物などの有機系物質などを挙げることができ
る。そして、これら増稠剤は基油中に分散してミセル構
造をとり、半固体または固体の状態にする役割を果たす
ものであるから、通常の場合、軸受素材の細孔径よりは
大きく、細孔内には侵入することが出来ず、高圧下で強
制的に圧入させようとしても基油のみが分離して細孔内
に浸透し、増稠剤は細孔の口外に留まるので、増稠剤添
加に止るグリース化は全く無意味であり、改善は期待で
きないことになる。Instead of such lubricating oils, it is possible to use semi-solid grease, but grease usually consists of a base oil and a thickener, and the thickener includes metal salts of higher fatty acids and various surface oils. Treated clay, inorganic fine powder such as silica, urea compounds such as allylurea and polyurea, terephthalamate, indanthrene, phthalocyanine, amerin,
Examples include organic substances such as fluorine compounds. These thickeners are dispersed in the base oil to take on a micellar structure and play the role of making it into a semi-solid or solid state. Even if you try to force it under high pressure, only the base oil will separate and penetrate into the pores, and the thickener will remain outside the pores, so the thickener Greasing, which is just an addition, is completely pointless and no improvement can be expected.
従来、市販品として焼結軸受含浸用の液状のグリースと
称するものがあるが、このものは室温および使用温度範
囲のいずれにおいても液状であって、焼結軸受の多孔空
間には油の場合と同様に簡単に充填されるので、グリー
スと呼ばれても本質的には前記の潤滑油と変らず、同様
の問題点を有するものである。Conventionally, there is a commercially available liquid grease for impregnating sintered bearings, but this grease is liquid both at room temperature and within the operating temperature range, and does not fill the pore spaces of sintered bearings like oil. Similarly, it is easily filled, so even though it is called grease, it is essentially the same as the above-mentioned lubricating oil and has the same problems.
従来の技術における多孔質滑り軸受は含油軸受であり、
特に温度上昇時に潤滑油の過度の滲出が起こり、軸受の
耐久性（寿命）の低下、軸受周辺の汚染等を引き起こす
という問題点があった。Porous plain bearings in conventional technology are oil-impregnated bearings,
Particularly when the temperature rises, excessive oozing of lubricating oil occurs, which causes problems such as a reduction in the durability (life) of the bearing and contamination of the area around the bearing.
上記の問題点を解決するために、この発明は基材の細孔
内に、増稠剤を０．１重量％以上含有し常温で自由表面
を作らない半固体状もしくは固体状のグリースを充填さ
せた多孔質滑り軸受とする手段を採用したものであり、
そのような多孔質滑り軸受゛を得るための具体的方法と
して常温で自由表面を作らない半固体状もしくは固体状
のグリースまたは基油と増稠剤との混合液（分散液）を
相転移温度以上に加熱溶融して潤滑油粘度の液体にした
のち、これに予め同温度に加熱した軸受を浸漬し、常圧
下もしくは減圧下において軸受基材の細孔内に溶融グリ
ースを浸透させて室温まで冷却するという方法を採用し
たものである。以下、これらの詳細を述べる。In order to solve the above problems, this invention fills the pores of the base material with semi-solid or solid grease that contains 0.1% by weight or more of a thickener and does not form a free surface at room temperature. This method uses a porous sliding bearing with
A specific method for obtaining such a porous sliding bearing is to prepare a semi-solid or solid grease that does not form a free surface at room temperature or a mixture (dispersion) of a base oil and a thickener at the phase transition temperature. After heating and melting the above to make a liquid with the viscosity of a lubricating oil, a bearing previously heated to the same temperature is immersed in this, and the molten grease is allowed to penetrate into the pores of the bearing base material under normal pressure or reduced pressure until it reaches room temperature. This method uses cooling. These details will be described below.
まず、この発明における多孔質滑り軸受の基材は、通常
、鉄、銅、亜鉛、ニッケル等またはこれらを組み合わせ
た合金の微粉粒に混合、圧縮成形、焼成、表面硬化等の
処理を施して得られる均一な多孔質組織を有する焼結体
であって、およそ５０μｍ以下（多くは１０μｍ以下）
の細孔が分布しているのが一般的である。また滑り軸受
の形状は、特に限定されるものではなく、平面軸受、ス
ラスト軸受、ジャーナル軸受など軸と軸受とが機構学的
には面接触をしていて、軸の回転に伴って滑りが生ずる
軸受であればいずれであってもよい。なお、ここで滑り
軸受に限定する理由は、ころがり軸受においては、ボー
ル、レース（軌道輪）などの部材には強度の点で多孔質
材を使用することは出来ない。ただし、保持器に多孔質
焼結材を用いる場合には上記の滑り軸受と同様の処理を
施しても良い。First, the base material of the porous sliding bearing in this invention is usually obtained by mixing fine particles of iron, copper, zinc, nickel, etc. or an alloy of these, and subjecting them to treatments such as compression molding, baking, and surface hardening. A sintered body with a uniform porous structure of approximately 50 μm or less (often 10 μm or less)
Generally, the pores are distributed. Furthermore, the shape of a sliding bearing is not particularly limited, and mechanically the shaft and bearing are in surface contact, such as plane bearings, thrust bearings, journal bearings, and slipping occurs as the shaft rotates. Any bearing may be used as long as it is a bearing. Note that the reason for limiting the present invention to sliding bearings is that in rolling bearings, porous materials cannot be used for members such as balls and races (rings) due to their strength. However, when a porous sintered material is used for the cage, the same treatment as for the above sliding bearing may be applied.
つぎに、この発明における増稠剤は石けん系および非石
けん系のいずれでもよいが、中でも高級脂肪酸の金属塩
、特にリチウム塩またはマグネシウム塩が好ましい。な
ぜならば、石けん増稠剤は相転移温度以上に加熱するこ
とにより液状化し、冷却することによって増稠剤が結晶
化し、保油性を発揮すること、リチウム石けんはグリー
スとしての安定性（酸化などの化学的、稠度などの物理
的性質）があること、さらにマグネシウム石けんはリチ
ウム、ナトリウム石けんなどにより液状化する相転移温
度が低く、配合されている極圧添加剤などの潤滑性向上
剤の焼結軸受への含浸処理時の熱劣化が抑えられるから
である。そして、これら増稠剤は基油すなわち石油系潤
滑油、合成潤滑油（たとえばシリコーン油、ジエステル
、ポリ−α−オレフィンなど）に、通常の潤滑グリース
に使用される各種添加剤（たとえば酸化防止剤、清浄分
散剤、極圧剤、摩耗防止剤、油性剤、摩擦調整剤、粘度
指数向上剤、流動点降下剤、さび止め剤、泡止め剤など
）を必要に応じて共存させなから増稠剤が加えられて、
増稠剤とは潤滑油を常温で自由表面を作らない半固体状
もしくは固体状のグリースに変化させる物質であるが、
このような特性を発現させるに必要な増稠剤の添加量は
少なくとも０．１重量％であり、１００℃においても流
動しないグリースとするためには増量たとえば０．２重
量％以上とすることが望ましい。そしてこれらを配合し
て得られるグリース組成物は加熱（好ましくは転移温度
以上に）されて溶融し、たとえば増稠剤として加えられ
た常温で棒状または多角形の粉末も溶融して均一相の液
状になる。降温すれば増稠剤が再び析出するという過程
を経ることが望ましい。このようなグリースであれば、
室温は勿論のこと、軸受が作動中に昇温する程度の温度
では増稠剤の寸法が軸受基材の細孔径よりも大きくて増
稠剤を細孔内に容易に侵入させることは出来なくても、
相転移温度以上に加熱されて完全に液体化されたグリー
スを同程度の温度にまで予め加熱されている軸受基材の
細孔内に侵透させることはきわめて容易である。Next, the thickener in this invention may be either soap-based or non-soap-based, but metal salts of higher fatty acids, particularly lithium salts or magnesium salts are preferred. This is because soap thickeners liquefy when heated above the phase transition temperature, crystallize when cooled and exhibit oil retention properties, and lithium soaps are stable as greases (resistant to oxidation, etc.). In addition, magnesium soap has a low phase transition temperature at which it liquefies with lithium and sodium soaps, and it is difficult to sinter lubricity improvers such as extreme pressure additives. This is because thermal deterioration during the impregnation treatment of the bearing can be suppressed. These thickeners are added to the base oil, i.e. petroleum-based lubricating oil, synthetic lubricating oil (e.g. silicone oil, diester, poly-α-olefin, etc.) and various additives (e.g. antioxidants) used in normal lubricating grease. , detergent dispersants, extreme pressure agents, anti-wear agents, oil-based agents, friction modifiers, viscosity index improvers, pour point depressants, rust inhibitors, anti-foaming agents, etc.) as necessary. agent is added,
A thickener is a substance that changes lubricating oil into a semi-solid or solid grease that does not create a free surface at room temperature.
The amount of thickener required to exhibit such properties is at least 0.1% by weight, and in order to obtain a grease that does not flow even at 100°C, the amount may be increased, for example, by 0.2% by weight or more. desirable. Then, the grease composition obtained by blending these is heated (preferably above the transition temperature) and melted, and for example, the rod-shaped or polygonal powder added as a thickener at room temperature is also melted to form a homogeneous liquid. become. It is desirable to go through a process in which the thickener precipitates again when the temperature is lowered. With this kind of grease,
Not only at room temperature, but also at temperatures where the bearing heats up during operation, the size of the thickener is larger than the pore diameter of the bearing base material, and the thickener cannot easily penetrate into the pores. Even though
It is extremely easy for grease that has been completely liquefied by being heated above its phase transition temperature to penetrate into the pores of a bearing base material that has been previously heated to a similar temperature.
軸受を構成する多孔質基材の細孔中に従来の技術では充
填し得なかった潤滑グリースが、常温および軸受作動時
の細孔内において流動することなく半固体の状態で保持
されているから、軸受の寿命を著しく延長させる作用ば
かりでなく、油の漏洩による周辺汚染を防止する作用を
も遺憾無く発揮することになる。This is because lubricating grease, which could not be filled with conventional technology into the pores of the porous base material that makes up the bearing, remains in a semi-solid state without flowing at room temperature and during bearing operation. Not only does this have the effect of significantly extending the life of the bearing, but it also fully exhibits the effect of preventing surrounding contamination due to oil leakage.
実施例１：
基油として２号タービン油（”１４０ ）を用い、これ
に増稠剤としてステアリン酸リチウムを表に示すような
割合で添加し調製したグリースの流動性表
を調べなところ、室温下で流動しない（すなわち自由表
面を作らない）状態にするためには増稠剤濃度が０．１
０％以上でなければならないことが明らかとなった。し
たがって、潤滑グリースが軸受から、油のように自然流
動によって漏洩しないためには、増稠剤濃度が０．１重
量％以上必要なことがわかる。Example 1: When examining the fluidity table of a grease prepared by using No. 2 turbine oil ("140) as a base oil and adding lithium stearate as a thickener in the proportion shown in the table, it was found that at room temperature The thickener concentration is 0.1 to ensure no flow (i.e. no free surface).
It became clear that it must be 0% or more. Therefore, it can be seen that the thickener concentration is required to be 0.1% by weight or more in order to prevent the lubricating grease from leaking from the bearing due to natural flow like oil.
実施例２：
基油として無添加多目的油（日本石油社製： ＦＢＫ１
５０）を、また増稠剤として１〜２５重量％の濃度にな
るようにステアリン酸リチウムを、さらに酸化防止剤と
してフェニル−α−ナフチルアミンを１．０重量％配合
して数種類の混合液（グリース原液）を調製し、外径１
５．６ｍｍ、内径８．０ｍｍ。Example 2: Additive-free multipurpose oil (manufactured by Nippon Oil Co., Ltd.: FBK1) as base oil
50), lithium stearate as a thickener at a concentration of 1 to 25% by weight, and 1.0% by weight of phenyl-α-naphthylamine as an antioxidant to prepare several types of mixed liquids (grease). Prepare the stock solution) and make the outer diameter 1
5.6mm, inner diameter 8.0mm.
長さ１２．０ｍｍの多孔質（細孔径５０μｍ以下）の焼
結銅合金製ブツシュに以下の手順で含浸し、含グリース
の滑り軸受を試作した。A porous (pore diameter of 50 μm or less) sintered copper alloy bushing with a length of 12.0 mm was impregnated with the following procedure to fabricate a prototype grease-containing sliding bearing.
上記混合液を２００℃に加熱し、充分に溶解させ均一相
の液状にした後、これに別途２００℃の恒温槽中で加熱
しておいた前記銅合金製ブツシュ（脱脂処理済）を浸漬
し、減圧含浸により細孔内に溶融グリースを含浸させた
後、浸漬したまま冷却して上記ブツシュを取り出した。The above-mentioned mixed liquid was heated to 200°C and sufficiently dissolved to form a homogeneous liquid, and then the copper alloy bushing (degreased), which had been heated separately in a constant temperature bath at 200°C, was immersed. After impregnating the molten grease into the pores by vacuum impregnation, the bush was cooled while being immersed and taken out.
表面に付着した過剰のグリースを布で拭き取ったブツシ
ュを○印）に示した。なお、対照品としてつぎの二つを
選び、その結果も同図（・印およびム印）に示した。The bushes where excess grease adhering to the surface has been wiped off with a cloth are shown in circles). In addition, the following two were selected as control products, and the results are also shown in the same figure (marked with * and *).
対照品−１
同じ寸法の銅合金製ブツシュに鉱油系潤滑油を含浸させ
た通常の含油軸受。Comparative product-1 A normal oil-impregnated bearing with a copper alloy bushing of the same size impregnated with mineral oil-based lubricating oil.
対照品−２
同じ寸法の銅合金製ブツシュに市販液状グリース（ＮＯ
Ｋ Ｋｌｌｉｂｅｒ社製： Ｃ０Ｎ５ＴＡＮＴ−ＧＬＹ
２１００）量（地との関係を示すものであり、このグ
リース洩れ量（比）とは増稠剤量１重量％のグリースの
洩れ量を１としたときの比である。この図から明らかな
ように、増稠剤の含有量の増大するにつれてグリースの
洩れ量は急激に減少し、増稠剤の含有量を数取量％とす
ることによってグリースの洩れ量を１／１０以下にする
ことが出、来る。増稠剤の含有量が皆無または０．１重
量％未満の対照量−１および２は本発明品と比べていず
れもグリース洩れ量は大であった。Control product-2 Commercially available liquid grease (NO
Manufactured by K Klliber: C0N5TANT-GLY
2100) amount (relationship with the ground), and this grease leakage amount (ratio) is the ratio when the leakage amount of grease with a thickener amount of 1% by weight is set to 1.It is clear from this figure. As shown, the amount of grease leaking decreases rapidly as the content of the thickener increases, and by setting the content of the thickener to % by quantity, the amount of grease leaking can be reduced to 1/10 or less. Control amounts -1 and 2 containing no thickener or less than 0.1% by weight both had a large amount of grease leakage compared to the products of the present invention.
実施例３：
基油として無添加多目的油（日本石油製： ＦＢＫ１５
０）を、また増稠剤としてステアリン酸マグネシウムを
１重量％、また酸化防止剤としてフェニル−α−ナフチ
ルアミンを１．０重量％、さらに反応性極圧添加剤とし
てモリブデンジチオフォスフェート（旭電化工業製：サ
クラルーブ３００）を３．０重量％およびジンクジアリ
ールジチオフォスフェート（日本ループリゾ；ル製ニル
−ブリゾール１３７０）５．０重量呪配合して、混合液
（グリース原液）を調製した。この液を１５０℃に加熱
して均一相の液状にした後、これに別途１５０℃の恒温
槽中で加熱しておいた実施例１の銅合金製ブツシュ（脱
脂処理済）を浸漬し、減圧含浸により細孔内に溶融グリ
ースを含浸させ、そのままの状態で冷却した。表面に付
着した過剰のグリースを布で拭き取ったブツシュを第２
図に示すように軸を水平にして、画鋲１と支持リング２
とによって支持した状態で１３０℃に調整された恒温槽
中に１時間静置し、この加熱前後の重量変化を調べた。Example 3: Additive-free multi-purpose oil (Nippon Oil Co., Ltd.: FBK15) was used as the base oil.
0), 1% by weight of magnesium stearate as a thickener, 1.0% by weight of phenyl-α-naphthylamine as an antioxidant, and molybdenum dithiophosphate (manufactured by Asahi Denka Kogyo Co., Ltd.) as a reactive extreme pressure additive. A mixed solution (grease stock solution) was prepared by blending 3.0 wt. After heating this liquid to 150°C to make it into a homogeneous phase liquid, the copper alloy bushing of Example 1 (degreased), which had been heated separately in a constant temperature bath at 150°C, was immersed, and the pressure was reduced. Molten grease was impregnated into the pores by impregnation, and then cooled in that state. Wipe off the excess grease on the surface with a cloth, and then
With the shaft horizontal as shown in the figure, pushpin 1 and support ring 2
The sample was left standing in a constant temperature bath adjusted to 130° C. for 1 hour while being supported by the above, and weight changes before and after heating were examined.
なお対照量として実施例２における対照量−１を選んだ
。重量変化は実施例３が１個当り３．１ｍｇであったの
に対して対照量−１は１個当り５．５ｒｎｇとかなり多
く、この発明のグリースを充填した滑り軸受の優秀さが
明らかとなった。Note that the control amount -1 in Example 2 was selected as the control amount. The weight change was 3.1 mg per piece in Example 3, while the control amount -1 was 5.5 rng per piece, which was quite large, demonstrating the superiority of the sliding bearing filled with the grease of this invention. became.
この発明の増稠剤を高濃度に含有するグリースが細孔内
に充填された軸受は通常の作動時の温度上昇範囲におけ
る潤滑油流出を極力抑制することが可能であるから、軸
受の寿命は大きく延び、また軸受周辺を汚染することも
ない。したがって、この発明の意義はきわめて大きいと
いうことが出来る。Bearings whose pores are filled with grease containing a high concentration of thickener according to the present invention can suppress lubricating oil leakage as much as possible in the temperature rise range during normal operation, so the life of the bearing can be extended. It extends widely and does not contaminate the area around the bearing. Therefore, it can be said that the significance of this invention is extremely large.
第１図は増稠剤の含有量とグリース洩れ量との関係を示
す図、第２図は実施例３における試料の支持方法を示す
断面図である。
Ｏ印・・・実施例、・印およびム印・・・対照量１・・
・画鋲、２・・・支持リング
特許出願人 エヌ・チー・エヌ 東洋ベアリング株式
会社同代理人 鎌 １） 文 −第１［２ｑ
ＫＳ ２ 「ｊFIG. 1 is a diagram showing the relationship between the content of thickener and the amount of grease leakage, and FIG. 2 is a sectional view showing the method of supporting a sample in Example 3. O mark: Example, * mark and M mark: Control amount 1...
・Thumbtack, 2...Support ring patent applicant NCHN Toyo Bearing Co., Ltd. Agent Sickle 1) Sentence - 1st [2q KS 2 "j
Claims (1)
常温で自由表面を作らない半固体状もしくは固体状のグ
リースが充填されていることを特徴とする多孔質滑り軸
受。 ２、常温で自由表面を作らない半固体状もしくは固体状
のグリースまたは基油と増稠剤との混合液（分散液）を
相転移温度以上に加熱溶融して潤滑油粘度の液体にした
のち、これに予め同温度に加熱した軸受を浸漬し、常圧
下もしくは減圧下において軸受基材の細孔内に溶融グリ
ースを浸透させて室温まで冷却することを特徴とする多
孔質滑り軸受の製造方法。[Claims] 1. The pores of the base material are filled with semi-solid or solid grease that contains 0.1% by weight or more of a thickener and does not form a free surface at room temperature. Features a porous sliding bearing. 2. After heating and melting a semi-solid or solid grease that does not create a free surface at room temperature or a mixture (dispersion) of base oil and thickener to a temperature above the phase transition temperature to make a liquid with the viscosity of a lubricating oil. A method for manufacturing a porous sliding bearing, which comprises immersing a bearing previously heated to the same temperature in this, allowing molten grease to penetrate into the pores of the bearing base material under normal pressure or reduced pressure, and cooling it to room temperature. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62028757A JPH0665891B2 (en) | 1987-02-09 | 1987-02-09 | Porous plain bearing and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62028757A JPH0665891B2 (en) | 1987-02-09 | 1987-02-09 | Porous plain bearing and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63195416A true JPS63195416A (en) | 1988-08-12 |
| JPH0665891B2 JPH0665891B2 (en) | 1994-08-24 |
Family
ID=12257280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62028757A Expired - Lifetime JPH0665891B2 (en) | 1987-02-09 | 1987-02-09 | Porous plain bearing and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665891B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02113019U (en) * | 1989-02-27 | 1990-09-10 | ||
| EP0416120A1 (en) * | 1989-02-27 | 1991-03-13 | Ntn Corporation | Porous plain bearing and method of manufacturing same |
| JPH0384217A (en) * | 1989-08-28 | 1991-04-09 | Ntn Corp | Manufacture of porous slide bearing |
| JPH0464713A (en) * | 1990-06-29 | 1992-02-28 | Ntn Corp | Manufacture of porous sliding bearing |
| JPH0480926U (en) * | 1990-11-22 | 1992-07-14 | ||
| JPH0526240A (en) * | 1991-07-16 | 1993-02-02 | Isamu Kikuchi | Oil retaining bearing |
| JPH05149341A (en) * | 1991-11-29 | 1993-06-15 | Ntn Corp | Porous slide bearing |
| WO2006046573A1 (en) * | 2004-10-29 | 2006-05-04 | Hitachi Construction Machinery Co., Ltd. | Grease for sliding bearing |
| US7939477B2 (en) | 2006-04-20 | 2011-05-10 | Nok Kluber Co., Ltd. | Lubricant composition for oil-impregnated sintered bearings |
| JP2012153762A (en) * | 2011-01-24 | 2012-08-16 | Nippeco Ltd | Lubricant composition for oil-containing bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160322U (en) * | 1985-03-27 | 1986-10-04 |
-
1987
- 1987-02-09 JP JP62028757A patent/JPH0665891B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160322U (en) * | 1985-03-27 | 1986-10-04 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02113019U (en) * | 1989-02-27 | 1990-09-10 | ||
| EP0416120A1 (en) * | 1989-02-27 | 1991-03-13 | Ntn Corporation | Porous plain bearing and method of manufacturing same |
| JPH0384217A (en) * | 1989-08-28 | 1991-04-09 | Ntn Corp | Manufacture of porous slide bearing |
| JPH0464713A (en) * | 1990-06-29 | 1992-02-28 | Ntn Corp | Manufacture of porous sliding bearing |
| JPH0480926U (en) * | 1990-11-22 | 1992-07-14 | ||
| JPH0526240A (en) * | 1991-07-16 | 1993-02-02 | Isamu Kikuchi | Oil retaining bearing |
| JPH05149341A (en) * | 1991-11-29 | 1993-06-15 | Ntn Corp | Porous slide bearing |
| WO2006046573A1 (en) * | 2004-10-29 | 2006-05-04 | Hitachi Construction Machinery Co., Ltd. | Grease for sliding bearing |
| US8376619B2 (en) | 2004-10-29 | 2013-02-19 | Hitachi Construction Machinery Co., Ltd. | Grease for slide bearing |
| US7939477B2 (en) | 2006-04-20 | 2011-05-10 | Nok Kluber Co., Ltd. | Lubricant composition for oil-impregnated sintered bearings |
| JP2012153762A (en) * | 2011-01-24 | 2012-08-16 | Nippeco Ltd | Lubricant composition for oil-containing bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0665891B2 (en) | 1994-08-24 |
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