JP2778646B2 - Plain bearing - Google Patents
Plain bearingInfo
- Publication number
- JP2778646B2 JP2778646B2 JP63242020A JP24202088A JP2778646B2 JP 2778646 B2 JP2778646 B2 JP 2778646B2 JP 63242020 A JP63242020 A JP 63242020A JP 24202088 A JP24202088 A JP 24202088A JP 2778646 B2 JP2778646 B2 JP 2778646B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- ptfe
- layer
- plating
- coating
- 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.)
- Expired - Fee Related
Links
- 238000007747 plating Methods 0.000 claims description 37
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 29
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 19
- 239000001996 bearing alloy Substances 0.000 claims description 18
- 239000010949 copper Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 16
- 238000000576 coating method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 229910017709 Ni Co Inorganic materials 0.000 description 10
- 229910003267 Ni-Co Inorganic materials 0.000 description 10
- 229910003262 Ni‐Co Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910018140 Al-Sn Inorganic materials 0.000 description 4
- 229910018564 Al—Sn Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000007772 electroless plating Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- 229910020220 Pb—Sn Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は滑り軸受に関し、より詳しくは内燃機関の主
軸受及びコンロッド軸受に用いて好適なアルミニウム系
及び銅系滑り軸受に関する。Description: TECHNICAL FIELD The present invention relates to a sliding bearing, and more particularly, to an aluminum-based and copper-based sliding bearing suitable for use in a main bearing and a connecting rod bearing of an internal combustion engine.
（従来の技術） 従来、アルミニウム系合金の滑り軸受としては既に種
々のものが知られている。一般にアルミニウム系合金の
滑り軸受は、裏金にAl−Sn系軸受合金層を形成したもの
からなるが、その他、裏金に形成したAl−Sn系軸受合金
層上にオーバレイ層を形成したもの、裏金に純Al層を介
してAl−Sn系軸受合金層を形成したもの等が知られてい
る。また、銅系滑り軸受は、Cu−Sn系、Cu−Pb−Sn系、
Cu−In−Sn系軸受合金を裏金に積層しオーバレイ層を形
成したものも知られている。(Prior Art) Conventionally, various kinds of aluminum-based alloy sliding bearings have been already known. Generally, an aluminum-based alloy plain bearing consists of an Al-Sn-based bearing alloy layer formed on a backing metal.Other than that, an overlaying layer is formed on an Al-Sn-based bearing alloy layer formed on the backing metal, One in which an Al-Sn-based bearing alloy layer is formed via a pure Al layer is known. Copper-based sliding bearings are Cu-Sn-based, Cu-Pb-Sn-based,
It is also known that a Cu-In-Sn-based bearing alloy is laminated on a back metal to form an overlay layer.
最近の自動車用のエンジンにおいては高出力や高回転
化が図られ、また低燃費化に伴って高温度で低粘度オイ
ルが使用されることから、軸受にとってはより厳しい条
件となってきており、一層の性能向上が望まれている。In recent years, high power and high speed have been achieved in automotive engines, and low temperature and low viscosity oils have been used in conjunction with low fuel consumption. Further improvement in performance is desired.
特に、上記した条件の下では、裏金表面（軸受背面）
とこれを支持するハウジング又はコンロッドとの間でフ
レッティング摩耗が生じ、その結果摩耗粉の堆積、ある
いは潤滑油の炭化によるスラッジの堆積等が軸受背面で
起こり易く、上記堆積物が軸受背面で成長すると軸受の
摺動側表面が部分的に盛り上がりを生じて軸受面内の強
い片当り状態となり、その部分で集中荷重が発生して軸
受が早期に疲労破壊することがあった。In particular, under the above conditions, the back metal surface (the back of the bearing)
Fretting wear occurs between the bearing and the housing or connecting rod that supports it, and as a result, the accumulation of wear powder or the accumulation of sludge due to the carbonization of lubricating oil, etc., easily occurs on the back of the bearing, and the deposit grows on the back of the bearing. As a result, the sliding-side surface of the bearing partially rises to form a strong one-sided contact in the bearing surface, and a concentrated load is generated at that portion, and the bearing may be damaged at an early stage by fatigue.
従来、このフレッティングの対策として、（イ）軸受
背面（ハウジングと接する面）にポリテトラフルオロエ
チレン（PTFE）をコーティングする、（ロ）軸受背面を
バフ研摩処理する、あるいは（ハ）軸受背面に銅めっき
をするなどの対策が考案されて来た。また、上記した最
近の自動車エンジン用軸受の使用条件下では、軸受の焼
付や初期摩耗が起こり易くなり、またオイルパンにおけ
るオイルの温度が140℃以上と高くなるに伴って軸受は
高温での疲労にさらされることが多くなった。この対策
としては主として、（ニ）滑り軸受合金及びオーバレイ
の組成及び／又は組織の改良が図られて来た。Conventionally, as a countermeasure against this fretting, (a) coating the back surface of the bearing (surface in contact with the housing) with polytetrafluoroethylene (PTFE), (b) buffing the back surface of the bearing, or Countermeasures such as copper plating have been devised. In addition, under the above-mentioned conditions for use of recent automotive engine bearings, seizure and initial wear of the bearings are liable to occur, and as the oil temperature in the oil pan rises to 140 ° C. or higher, the bearings become fatigued at high temperatures. Exposure increased. As a countermeasure for this, (d) improvement of the composition and / or structure of the slide bearing alloy and the overlay has mainly been attempted.
従来、鉛系合金が通常の潤滑条件で使用される軸受の
オーバレイとして使用されて来た。一方、ドライ潤滑条
件で使用される軸受にはPTFEが潤滑性にすぐれているた
め鉛系合金のオーバレイに代わって使用されることがあ
った。Conventionally, lead-based alloys have been used as overlays for bearings used under normal lubrication conditions. On the other hand, PTFE is sometimes used in place of lead-based alloy overlays in bearings used under dry lubrication conditions due to its excellent lubricity.
（発明が解決しようとする課題） しかしながら、フレッティング摩耗の対策の中で
（イ）の対策では、軸受を組込んだ初期にはフレッティ
ング防止の効果はあるもののPTFEコーティングの密着性
がよくないために、フレッティング防止効果の信頼性に
欠けるという課題があった。また（ロ）、（ハ）の対策
では十分な低摩擦特性が得られないため十分なるフレッ
ティング防止効果を達成することができなかった。ま
た、（ニ）の対策により滑り軸受の耐疲労性は著しく向
上したが、滑り軸受の構造面からの耐疲労性向上が望ま
れていた。(Problems to be solved by the invention) However, among the measures against fretting wear, the measure (a) has the effect of preventing fretting in the early stage of incorporating the bearing, but the PTFE coating has poor adhesion. Therefore, there is a problem that the reliability of the fretting prevention effect is lacking. Further, in the measures (b) and (c), a sufficiently low friction characteristic cannot be obtained, so that a sufficient fretting prevention effect cannot be achieved. Although the fatigue resistance of the sliding bearing has been remarkably improved by the measure (d), it has been desired to improve the fatigue resistance of the sliding bearing from the structural aspect.
一方、PTFEを使用した場合は、PTFEコーティングの密
着性がよくないために、十分な機能を発揮する前に剥離
することがあった。On the other hand, when PTFE is used, the PTFE coating may be peeled off before exerting a sufficient function due to poor adhesion.
本発明者等は上述のような事情に鑑み、滑り軸受の構
造について種々の検討を行なった結果、優れた性能が得
られる滑り軸受を提供するには、低摩耗性特性にすぐれ
たPTFEコーティングの改良が最も有望であることを見出
し、さらに研究を進めた。すなわち本発明の第一の目的
は低摩擦特性をできるだけ損なわない方法でPTFEコーテ
ィングの密着性を改良して、軸受背面の耐フレッティン
グ性、軸受摺動側表面の耐疲労性にすぐれた滑り軸受を
提供することである。In view of the circumstances described above, the present inventors have conducted various studies on the structure of a sliding bearing.As a result, in order to provide a sliding bearing with excellent performance, a PTFE coating having excellent low-wear properties was provided. We found that the improvement was the most promising and went on to further research. That is, the first object of the present invention is to improve the adhesion of the PTFE coating by a method that does not impair the low friction characteristics as much as possible, and to provide a sliding bearing having excellent fretting resistance on the back of the bearing and fatigue resistance on the sliding surface of the bearing. It is to provide.
（課題を解決するための手段） 本発明の滑り軸受は、裏金に、アルミニウムもしくは
銅系軸受合金層、および必要によりオーバレイ層を順次
形成したものにおいて、PTFEとNi及び／又はCoの複合め
っき層を（ｂ）軸受摺動側表面、（ａ）軸受背面、ある
いは（ｃ）軸受摺動側表面と軸受背面の両者に形成した
ことを特徴とする。(Means for Solving the Problems) The sliding bearing according to the present invention is a sliding bearing in which an aluminum or copper-based bearing alloy layer and an overlay layer are formed on a backing metal in order, and a composite plating layer of PTFE and Ni and / or Co is provided. Is formed on (b) the bearing sliding side surface, (a) the bearing back surface, or (c) both the bearing sliding side surface and the bearing back surface.
（作用） 上述のような構造を有する滑り軸受は、複合めっき層
を設けた面の密着性が高く、摩擦係数が低く、かつ耐熱
性が高くなる。このため、（ａ）の場合は軸受使用中の
長期にわたってフレッティング損傷が起こり難くなる。
（ｂ）の場合は、軸受表面に密着性良好なPTFEが存在す
るため、なじみ性が良好である。この作用により初期摩
耗が少なくなる。またNi等の存在により耐摩耗性が向上
する。加えて、これら（a,b）の作用により、耐疲労性
が高められる。(Operation) In the sliding bearing having the above-described structure, the surface on which the composite plating layer is provided has high adhesion, a low coefficient of friction, and high heat resistance. For this reason, in the case of (a), fretting damage hardly occurs for a long time during use of the bearing.
In the case of (b), the conformability is good because PTFE having good adhesion exists on the bearing surface. This action reduces initial wear. The wear resistance is improved by the presence of Ni and the like. In addition, the action of (a, b) enhances the fatigue resistance.
（実施例） 以下複合めっき層を軸受摺動側表面と軸受背面の両側
に設けまたオーバレイを設けた実施例について本発明を
詳細に説明するが、これらの説明により、複合めっきを
片側に設けた実施例の構成も明らかになるであろう。第
１図において、１は裏金、２はCuまたはAl系軸受合金
層、３はオーバレイ層で、４は裏金１の最表面のコーテ
ィング層、５はCu系またはAl系軸受合金層の最表面に設
けたコーティング層である。(Examples) Hereinafter, the present invention will be described in detail with respect to examples in which a composite plating layer is provided on both sides of a bearing sliding side surface and a bearing rear surface and an overlay is provided. According to these descriptions, composite plating is provided on one side. The configuration of the embodiment will be clear. In FIG. 1, 1 is a backing metal, 2 is a Cu or Al-based bearing alloy layer, 3 is an overlay layer, 4 is a coating layer on the outermost surface of the backing metal 1, and 5 is an outermost surface of the Cu or Al-based bearing alloy layer. It is a coating layer provided.
裏金１としては通常の裏金鋼板、例えばSPCCを用い
る。Al系またはCu系軸受合金層２は、とくに限定されな
いが、Al系合金層の場合軸受使用雰囲気温度（150〜200
℃）で強度の高いものが必要な場合は、Alに３〜20wt％
のSnと総量で0.1〜1wt％のCr,Mn,Zr,V,Mo,Co,Nbのうち
の１種以上を添加した材料を用いることが好ましい。As the back metal 1, a normal back metal sheet, for example, SPCC is used. The Al-based or Cu-based bearing alloy layer 2 is not particularly limited, but in the case of an Al-based alloy layer, the bearing operating atmosphere temperature (150 to 200
℃), if high strength is required, 3 ~ 20wt% in Al
It is preferable to use a material to which is added Sn and at least one of Cr, Mn, Zr, V, Mo, Co, and Nb in a total amount of 0.1 to 1 wt%.
上記Al系軸受合金層３の材料としては、上記した成分
に、さらに5wt％以下のPb、10wt％以下のSi、2.5wt％以
下のCu及び／又はMgのうちの１種以上を含有させてもよ
い。上記Pbはなじみ性を向上させるとともにSnの潤滑性
を改善し、Siはそれ自体の硬さ及びSiと他の元素との金
属間化合物の硬さが高いので、耐摩耗性を向上させる。
さらにCu及び／又はMgは材料の伸びをあまり低下させず
に強度を向上する効果がある。As a material of the Al-based bearing alloy layer 3, one or more of Pb of 5 wt% or less, Si of 10 wt% or less, Cu and / or Mg of 2.5 wt% or less are further added to the above-mentioned components. Is also good. Pb improves the conformability and improves the lubricity of Sn, and Si improves the wear resistance because of its own hardness and the hardness of the intermetallic compound of Si and other elements.
Further, Cu and / or Mg have the effect of improving the strength without significantly reducing the elongation of the material.
又、上記裏金１とAl系軸受合金２との間に硬さの低い
Al層を介在させてクッションの機能をもたせてもよい。Further, the hardness between the back metal 1 and the Al-based bearing alloy 2 is low.
The function of a cushion may be provided with an Al layer interposed.
さらに上記オーバレイ層３は、軸受合金層２がCu系の
場合に用いられることが多いが、はPb系合金からなる。
このPb系合金としては、Pbに、15wt％以下のSn、15wt％
以下のIn、5wt％以下のCu、5wt％以下のSbのうちの１種
以上を添加した材料を用いることが望ましい。このオー
バレイ層三は、化学メッキ、電気メッキ或いは乾式メッ
キ（スパッタリング等）によって形成することができ、
必要によればAl系軸受合金層３上に下地処理とし、４〜
５μｍ厚以下のNiメッキ又はCuメッキを形成し、そのメ
ッキ上に形成してもよい。Further, the overlay layer 3 is often used when the bearing alloy layer 2 is a Cu-based alloy, but is composed of a Pb-based alloy.
As this Pb-based alloy, Pb contains 15 wt% or less of Sn, 15 wt%
It is desirable to use a material to which one or more of the following In, 5 wt% or less Cu, and 5 wt% or less Sb are added. This overlay layer 3 can be formed by chemical plating, electroplating or dry plating (sputtering, etc.),
If necessary, a base treatment may be performed on the Al-based bearing alloy
Ni plating or Cu plating having a thickness of 5 μm or less may be formed and formed on the plating.
上記オーバレイ層は、軸粗さ、うねり等に対し、初期
なじみ性にすぐれ、片当りに対しても容易に変形、流
動、摩耗してなじむようになる。また耐焼付性に富むと
ともに、異物の埋収性を持つ。The overlay layer has excellent initial conformability to shaft roughness, undulation, and the like, and easily deforms, flows, wears, and conforms even to a single contact. In addition, it has excellent seizure resistance and has the ability to bury foreign matter.
本発明に係る滑り軸受の最も大きな特徴は、Niおよび
／またはCo（以下、Ni−Coと記す）から実質的になる複
合めっき層によるコーティング４、５を設けることにあ
り、エンジンの過酷な運転条件下においてもフレッティ
ング及び焼付を防止しようとするものである。The most significant feature of the slide bearing according to the present invention resides in that coatings 4 and 5 are provided by a composite plating layer substantially consisting of Ni and / or Co (hereinafter, referred to as Ni-Co). It is intended to prevent fretting and seizure even under conditions.
コーティング層４、５内のNi−Coによって耐熱性およ
び密着性が高められる。またNi−Coそれ自身は異物の堆
積を妨げないが、コーティング層４、５に分散された場
合、PTFEとともに異物の堆積を妨げることが分かった。
コーティング層内にNi−CoとPTFEを相互に分散させるた
めにはNi−Coの電解めっきまたは無電解めっき中にPTFE
を同時析出する複合めっき法によらなければならない。
PTFEをNi−Coと同時析出させるためには、PTFEが一般に
はめっき液中で凝集しあるいは沈降し易いので、PTFEと
Ni−Coのイオンを含有するめっき液を強力に撹拌しなが
らめっきするなどの対策を講ずる必要がある。好ましく
は、特公昭56−452号に開示されたような陽イオン性界
面活性化合物を含有する陽荷電ポリフルオロカーボンを
めっき液に添加する。この場合には、PTFEがめっき液中
に安定して分散するので、強力に撹拌する対策を講ぜず
に所望の複合めっきを得ることができる。めっき液の種
類は、限定されるものではないが、次亜リン酸とニッケ
ルを適宜の比率で混合した無電解めっき液、ワットNi電
解めっき液、次亜リン酸とコバルトを適宜の比率で混合
したCo無電解めっき液が好ましい。The heat resistance and the adhesion are enhanced by the Ni—Co in the coating layers 4 and 5. In addition, it was found that Ni-Co itself did not prevent foreign matter from being deposited, but when dispersed in the coating layers 4 and 5, together with PTFE, prevented foreign matter from being deposited.
In order to disperse Ni-Co and PTFE mutually in the coating layer, PTFE is used during Ni-Co electroplating or electroless plating.
Must be based on a composite plating method for co-precipitation.
In order to co-precipitate PTFE with Ni-Co, PTFE generally tends to agglomerate or settle in the plating solution.
It is necessary to take measures such as plating while strongly stirring the plating solution containing Ni-Co ions. Preferably, a positively charged polyfluorocarbon containing a cationic surfactant compound as disclosed in JP-B-56-452 is added to the plating solution. In this case, since the PTFE is stably dispersed in the plating solution, a desired composite plating can be obtained without taking measures for strong stirring. The type of plating solution is not limited, but electroless plating solution in which hypophosphorous acid and nickel are mixed in an appropriate ratio, watt Ni electrolytic plating solution, and hypophosphorous acid and cobalt in an appropriate ratio are mixed. Co electroless plating solution is preferred.
上記しためっき法により得られるコーティング中のNi
−CoとPTFEの比率は好ましくは１対0.05〜0.1重量比、
より好ましくは１対0.08〜0.09重量比である。またコー
ティング層の厚みは好ましくは2.5〜15μｍ、より好ま
しくは５〜15μｍである。Ni in the coating obtained by the above plating method
-The ratio of Co and PTFE is preferably 1 to 0.05 to 0.1 weight ratio,
More preferably, the weight ratio is 1 to 0.08 to 0.09. The thickness of the coating layer is preferably 2.5 to 15 μm, more preferably 5 to 15 μm.
また、Ni−Coめっきを行なった後の母材をPTFEを分散
する液体中に浸漬すると、表面にはPTFEが多く、中心に
はNi−Coが多く存在する濃度分布を有するコーティング
が得られる。このようなコーティングは下地との密着力
が高くかつ表面（軸と接する面）での摩擦係数が低くな
るため、PTFEとNi−Coの所望特性を有効に活用して滑り
軸受特性を一層向上させることができる。なお、浸漬に
代えてPTFEをはけ塗りあるいはスプレーコーティングし
ても同様の効果が得られる。When the base material after Ni-Co plating is immersed in a liquid in which PTFE is dispersed, a coating having a concentration distribution in which PTFE is large on the surface and Ni-Co is large in the center is obtained. Such a coating has a high adhesion to the substrate and a low coefficient of friction on the surface (the surface in contact with the shaft), so the desired characteristics of PTFE and Ni-Co are effectively used to further improve the sliding bearing characteristics. be able to. The same effect can be obtained by brushing or spray coating PTFE instead of immersion.
任意成分として:PTFEの非粘着性を改良するとともに
なじみ性を与えるフルオロカーボン（FC）、テトラフル
オロエチレン−パーフルオロアルキルビニル共重合体
（PFA）などをコーティングに添加してもよい。As an optional component: a fluorocarbon (FC), a tetrafluoroethylene-perfluoroalkylvinyl copolymer (PFA) or the like, which improves the non-adhesiveness of PTFE and imparts compatibility, may be added to the coating.
以下、実験例によりさらに詳しく本発明を説明する。 Hereinafter, the present invention will be described in more detail with reference to experimental examples.
（試料 １−第２図） オーバレイ層3:Pb−10％Sn−２％ Cu/5μｍ厚 Al−Sn系 軸受合金層2:Al−12％Sn−1.5％ Pb−2.5％Si−１％ Cu−0.2％Cr 裏金１ :SPCC （試料 ２−第３図） 試料１のものにコーティング層４として、Ni−PTFEの
複合めっき４を15μｍ設けた。複合めっきの方法は次の
とおりであった。(Sample 1-Fig. 2) Overlay layer 3: Pb-10% Sn-2% Cu / 5μm thick Al-Sn bearing alloy layer 2: Al-12% Sn-1.5% Pb-2.5% Si-1% Cu -0.2% Cr Backing metal 1: SPCC (Sample 2-FIG. 3) The coating of Sample 1 was provided with a composite plating 4 of Ni-PTFE 15 μm as coating layer 4. The method of composite plating was as follows.
Niイオンと次亜リン酸を1:1の重量比率で混合した無
電解Niめっき浴１を調製し、これに陽イオン性界面活
性フルオロカーボン液（前掲特公昭56−452号の出願人
であるアクゾ・ナームローゼ・ベンノートシャープ社の
製品・商品名・ナイフローディスパージョン）を40g加
えたNi・PTFE複合めっき浴を調製した。このめっき浴
（液温90℃）に試料１を、オーバレイ３にマスクを設け
て、浸漬し、厚さ３〜５μｍのNi・PTFE複合めっきのコ
ーティングを施した。An electroless Ni plating bath 1 in which Ni ions and hypophosphorous acid were mixed at a weight ratio of 1: 1 was prepared, and a cationic surfactant fluorocarbon solution (Akzo, the applicant of Japanese Patent Publication No. 56-452, supra) was prepared. A Ni / PTFE composite plating bath was prepared by adding 40 g of a product (trade name, Nyflow Dispersion, manufactured by Nam Rose, Ben Note Sharp). The sample 1 was immersed in the plating bath (solution temperature 90 ° C.) with a mask provided on the overlay 3, and a coating of 3 to 5 μm thick Ni / PTFE composite plating was applied.
（試料３） 試料３の複合めっき液のNiをCoに変え、めっき浴を温
度90℃とし、撹拌しながら試料２と同様のコーティング
（厚み３〜５μｍ）を施した。(Sample 3) The same coating (thickness: 3 to 5 μm) as that of Sample 2 was applied while changing the Ni of the composite plating solution of Sample 3 to Co, setting the temperature of the plating bath to 90 ° C., and stirring.
（試料４−第４図） 試料１のものにコーティング層５として、Ni−PTFEの
複合めっき４を各々8,15,20μｍ設けた。複合めっきの
方法は試料２と同じであった。(Sample 4-FIG. 4) The Ni-PTFE composite plating 4 was provided on the sample 1 as the coating layer 5 at 8, 15, and 20 μm, respectively. The method of composite plating was the same as that of Sample 2.
（試料５） 試料４の複合めっき液のNiをCoに変え、めっき浴を温
度90℃とし、撹拌しながら試料４と同様のコーティング
（厚み３〜５μｍ）を施した。(Sample 5) The same coating (thickness: 3 to 5 μm) as that of Sample 4 was applied while changing the Ni of the composite plating solution of Sample 4 to Co, setting the temperature of the plating bath to 90 ° C., and stirring.
（発明の効果） 以上説明したように、本発明により、裏金の最表面
に、PTFEと、Ni及びCoの少なくとも１種とから実質的に
なる複合めっき層を設けることによりフレッティングを
効果的にかつ安定して防止することができる。 (Effect of the Invention) As described above, according to the present invention, fretting is effectively performed by providing a composite plating layer substantially composed of PTFE and at least one of Ni and Co on the outermost surface of the backing metal. And it can be prevented stably.
また、軸受合金層の最表面側に、PTFEと、Ni及びCoの
少なくとも１種とから実質的になる複合めっき層を設け
ることにより、初期摩耗が少なくなり、なじみ性、耐疲
労性、耐焼付性などが改良される。In addition, by providing a composite plating layer substantially composed of PTFE and at least one of Ni and Co on the outermost surface side of the bearing alloy layer, initial wear is reduced, conformability, fatigue resistance, and seizure resistance. The properties are improved.
【図面の簡単な説明】 第１図は本発明一実施例に係る滑り軸受を説明するため
の断面図、 第２図は従来の滑り軸受試料の断面図、 第３図及び第４図は本発明の滑り軸受試料の断面図であ
る。 １……裏金、２……軸受合金層、３……オーバレイ、4,
5……複合めっき層BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view for explaining a slide bearing according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a conventional slide bearing sample, and FIG. 3 and FIG. It is sectional drawing of the sliding bearing sample of this invention. 1 ... back metal, 2 ... bearing alloy layer, 3 ... overlay, 4,
5 …… Composite plating layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 北内 正喜 愛知県豊田市緑ケ丘３丁目65番地 大豊 工業株式会社内 (72)発明者 山田 哲 愛知県豊田市トヨタ町１番地 トヨタ自 動車株式会社内 (72)発明者 高木 利誌 愛知県豊田市広田町稲荷山20 高木特殊 工業株式会社内 (56)参考文献 特開 昭61−189932（ＪＰ，Ａ) 特開 昭61−112818（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F16C 33/12 C25D 15/02──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayoshi Kitauchi 3-65 Midorigaoka, Toyota City, Aichi Prefecture Inside Daitoyo Kogyo Co., Ltd. (72) Inventor Satoshi Yamada 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (72) Inventor Toshi Takagi 20 Inariyama, Hirota-cho, Toyota-shi, Aichi Prefecture Inside Takagi Special Industries Co., Ltd. (56) References JP-A-61-189932 (JP, A) JP-A-61-112818 (JP, A) ( 58) Field surveyed (Int.Cl. 6 , DB name) F16C 33/12 C25D 15/02
Claims (1)
金を含んでなり、必要によりさらにオーバレイを有する
エンジン用滑り軸受において、前記軸受合金層の摺動面
及び前記裏金の背面のいずれか一方または両方に、PTFE
と、Ni及びCoの少なくとも１種とからなるフレッティン
グ防止用複合めっき層を設けたことを特徴とする滑り軸
受。1. An engine sliding bearing comprising an aluminum or copper-based bearing alloy layer and a back metal, and optionally having an overlay, wherein one of a sliding surface of the bearing alloy layer and a back surface of the back metal is provided. Both, PTFE
And a composite plating layer for preventing fretting comprising at least one of Ni and Co.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63242020A JP2778646B2 (en) | 1988-09-27 | 1988-09-27 | Plain bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63242020A JP2778646B2 (en) | 1988-09-27 | 1988-09-27 | Plain bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0289813A JPH0289813A (en) | 1990-03-29 |
| JP2778646B2 true JP2778646B2 (en) | 1998-07-23 |
Family
ID=17083075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63242020A Expired - Fee Related JP2778646B2 (en) | 1988-09-27 | 1988-09-27 | Plain bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778646B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104874B2 (en) * | 1990-04-10 | 1994-12-21 | 大同メタル工業株式会社 | Aluminum alloy bearing for low rigidity housing and manufacturing method thereof |
| JPH0694036A (en) * | 1992-09-11 | 1994-04-05 | Daido Metal Co Ltd | Multilayer slide bearing excellent in fretting resistant characteristic |
| US5803614A (en) * | 1996-07-15 | 1998-09-08 | Daido Metal Company, Ltd. | Bearing structure of sliding bearing |
| US6012850A (en) * | 1997-10-23 | 2000-01-11 | Daido Metal Company Ltd. | Sliding bearing assembly |
| DE19814756A1 (en) * | 1998-04-02 | 1999-03-11 | Man B & W Diesel Gmbh | Bearing for large engine |
| JP2000314424A (en) | 1999-04-30 | 2000-11-14 | Daido Metal Co Ltd | Slide bearing and slide bearing structure |
| JP2001200838A (en) * | 1999-11-09 | 2001-07-27 | Seiko Instruments Inc | Fluid dynamic pressure bearing, fluid dynamic pressure bearing device, manufacturing method of fluid dynamic pressure bearing, and bearing surface machining method |
| JP2003278757A (en) * | 2002-03-26 | 2003-10-02 | Daido Metal Co Ltd | Sliding bearing and its manufacturing method |
| EP2352792A4 (en) * | 2008-11-17 | 2012-04-18 | Univ Florida | Inert wear resistant fluoropolymer-based solid lubricants, methods of making, and methods of use |
| FR2983867B1 (en) * | 2011-12-09 | 2014-08-22 | Total Raffinage Marketing | ENGINE LUBRICANT FOR HYBRID OR MICRO-HYBRID MOTOR VEHICLES |
| CN105350032B (en) * | 2015-07-20 | 2017-09-12 | 无锡市宝玛精密部件有限公司 | The plating technology of resist-nailed seat part coating |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112818A (en) * | 1984-11-07 | 1986-05-30 | Canon Inc | Fluid bearing |
| DE3505374A1 (en) * | 1985-02-16 | 1986-08-28 | Kolbenschmidt AG, 7107 Neckarsulm | SLIDING BEARING MATERIAL |
-
1988
- 1988-09-27 JP JP63242020A patent/JP2778646B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0289813A (en) | 1990-03-29 |
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