JP2852521B2 - Plain bearings for internal combustion engines - Google Patents
Plain bearings for internal combustion enginesInfo
- Publication number
- JP2852521B2 JP2852521B2 JP63292449A JP29244988A JP2852521B2 JP 2852521 B2 JP2852521 B2 JP 2852521B2 JP 63292449 A JP63292449 A JP 63292449A JP 29244988 A JP29244988 A JP 29244988A JP 2852521 B2 JP2852521 B2 JP 2852521B2
- Authority
- JP
- Japan
- Prior art keywords
- overlay
- layer
- plating layer
- internal combustion
- bearing
- 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
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
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は内燃機関用すべり軸受に係り、内燃機関の
クランク軸の軸受の性能向上をはかった内燃機関用すべ
り軸受の構造に関するものである。Description: TECHNICAL FIELD The present invention relates to a sliding bearing for an internal combustion engine, and more particularly to a structure of a sliding bearing for an internal combustion engine in which the performance of a crankshaft bearing of the internal combustion engine is improved.
（従来の技術） 内燃機関のクランク軸に用いられるすべり軸受として
は第５図に示すものが広く用いられている。(Prior Art) As a slide bearing used for a crankshaft of an internal combustion engine, the one shown in FIG. 5 is widely used.
図においてａは鉛基オーバレイ層、ｂはNi鍍金層、ｃ
は銅一鉛層、ｄはスチールバック、ｅは軸を示す。In the figure, a is a lead-based overlay layer, b is a Ni plating layer, c
Indicates a copper-lead layer, d indicates a steel back, and e indicates an axis.
鉛基オーバレイ層ａは鉛をベースとして約10％のSnを
含有し、耐摩耗性を高める機能を果たしている。The lead-based overlay layer a contains about 10% of Sn based on lead, and has a function of improving wear resistance.
Ni鍍金層ｂは厚さ１〜３μとなっており、鉛基オーバ
レイ層ａに含有されているSnの銅一鉛層ｃへの拡散を防
止している。The Ni plating layer b has a thickness of 1 to 3 μm, and prevents the diffusion of Sn contained in the lead-based overlay layer a into the copper-lead layer c.
（発明が解決しようとする課題） ディーゼルエンジンの高ディーゼル力化に伴う高過給
化及び高回転化によりエンジン軸受の負荷は増大する傾
向にあり、軸受の信頼性及び耐久性向上は重要な課題と
なっている。(Problems to be Solved by the Invention) The load on engine bearings tends to increase due to high supercharging and high speed accompanying the high diesel power of diesel engines, and it is important to improve the reliability and durability of bearings It has become.
オーバレイ付ケルメット合金軸受の耐久性・信頼性向
上を図るためには、従来オーバレイ層のなじみ性向上の
ためだけで、すぐ取れてもよいとの考え方であったが、
本願発明者はオーバレイ層を長時間にわたり残存させる
ことに効果があることを多年の研究により判明した。In order to improve the durability and reliability of kelmet alloy bearings with overlay, it was conventionally thought that it would be possible to remove the bearing just by improving the conformability of the overlay layer.
The inventor of the present invention has found through many years of research that the overlay layer is effective for remaining for a long time.
その理由はオーバレイの下のケルメット合金に対し、
オーバレイは高い耐焼き付き性を持つばかりでなく、潤
滑油中の摩耗粉、ダストスラッジ等の異物の埋収性を持
つことが上げられる。The reason is that for the kelmet alloy under the overlay,
The overlay not only has high seizure resistance, but also has an embedding property of foreign substances such as abrasion powder and dust sludge in lubricating oil.
またケルメット合金に対し耐腐食性が良い。 Also, it has good corrosion resistance to kelmet alloy.
上記従来技術に上げた例ではオーバレイとケルメット
合金（Cu−Pb合金）の間にNi鍍金層を設けているが、こ
れはオーバレイ中のSnの拡散を遅らせる効果はなく、オ
ーバレイが取れた時Cu−Pb合金が表面に出て、耐腐食性
が悪化するので、耐腐食性向上のために設けたものであ
る。In the above-mentioned prior art example, the Ni plating layer is provided between the overlay and the kelmet alloy (Cu-Pb alloy). However, this has no effect of delaying the diffusion of Sn in the overlay. Since the -Pb alloy comes out on the surface and the corrosion resistance deteriorates, it is provided for improving the corrosion resistance.
すなわち前記従来のものは、Ni鍍金層が機関の使用中
にオーバレイ中のSnと反応し、金属化合物であるNi3Sn4
を生成し、オーバレイ中のSn含有量を減少させるという
ような不具合な点がある。That is, in the conventional one, the Ni plating layer reacts with Sn in the overlay during use of the engine, and the metal compound Ni 3 Sn 4
To reduce the Sn content in the overlay.
オーバレイ中のSn含有量が減少すると、耐摩耗性を低
下させる。Decreasing the Sn content in the overlay reduces wear resistance.
従って機関の稼働時間とともにオーバレイの摩耗が進
行してくると、Ni−Snの化合物層及びNi鍍金層が前面に
露出することになるが、この状態では焼付限界荷重が常
時の1/3程度となり、耐焼付性の点から非常に危険な状
態となる。Therefore, as the wear of the overlay progresses with the operating time of the engine, the Ni-Sn compound layer and the Ni plating layer will be exposed on the front surface, but in this state the seizure limit load will be about 1/3 of the normal It is very dangerous from the viewpoint of seizure resistance.
第６図にSn含有量とオーバレイの摩耗量の関係を示
す。FIG. 6 shows the relationship between the Sn content and the amount of overlay wear.
この発明は以上の不具合を解消することを目的とする
ものである。An object of the present invention is to solve the above problems.
（課題を解決するための手段及び作用） この発明は上記の点に鑑みなされたものであって、軸
受合金とオーバレイと、軸受合金とオーバレイの境界層
に設けられたNi鍍金層スチールバックによって形成され
る内燃機関用すべり軸受において、Ni鍍金層を波形状と
し、オーバレイの中間に１層または複数層のSn鍍金層を
挿設したもので、オーバレイの摩耗時にNi鍍金層が前面
に露出しないように作用させると共に、オーバレイのSn
の拡散を補完するように作用させて、軸受の耐焼付性及
び耐摩耗性を向上することをはかるものである。(Means and Actions for Solving the Problems) The present invention has been made in view of the above points, and is formed by a bearing alloy, an overlay, and a Ni plated steel back provided on a boundary layer between the bearing alloy and the overlay. In a sliding bearing for an internal combustion engine, the Ni plating layer is corrugated and one or more Sn plating layers are inserted in the middle of the overlay so that the Ni plating layer is not exposed on the front surface when the overlay is worn. And overlay Sn
To improve the seizure resistance and wear resistance of the bearing.
（実施例） 次にこの発明の実施例を図面に基づいて説明する。(Example) Next, an example of the present invention will be described with reference to the drawings.
第１図はこの発明の一実施例の断面図である 第１図において１は鉛基オーバレイ層、２はNi鍍金
層、３は銅−鉛層、４はスチールバック、５は軸を示
す。FIG. 1 is a cross-sectional view of one embodiment of the present invention. In FIG. 1, 1 is a lead-based overlay layer, 2 is a Ni plating layer, 3 is a copper-lead layer, 4 is a steel back, and 5 is a shaft.
Ni鍍金層２は図示のように波形となっており、波形の
底部の軸受表面よりの距離をA1として、波形のピッチを
Ｄとすると、オーバレイ層１の耐疲労性及びなじみ性の
点から次の範囲に規定する。The Ni plating layer 2 is corrugated as shown in the figure. If the distance between the bottom of the corrugation from the bearing surface is A 1 and the pitch of the corrugation is D, the overlay layer 1 has a fatigue resistance and conformability. Provided in the following range.
0.005mm＜A1≦0.05mm ……（１） 0.005mm＜A2≦0.05mm ……（２） または耐焼付性より A1−A2≧0.005mm ……（３） 0.001mm≦Ｄ≦1.0mm ……（４） このように規定することにより、オーバレイ層１が摩
耗した場合Ni鍍金層２の露出は部分的となり、耐焼付性
は大幅に向上する。0.005mm <A 1 ≦ 0.05mm… (1) 0.005mm <A 2 ≦ 0.05mm …… (2) or from the seizure resistance A 1 −A 2 ≧ 0.005mm …… (3) 0.001mm ≦ D ≦ 1.0 mm (4) By defining as above, when the overlay layer 1 is worn, the exposure of the Ni plating layer 2 becomes partial, and the seizure resistance is greatly improved.
第２図は別の実施例である。 FIG. 2 shows another embodiment.
符号は第１図と同一としてある。 The reference numerals are the same as in FIG.
この場合Ni鍍金層２は矩形波形となっていて、軸受表
面よりの距離A1,A2及び波形のピッチＤについては前記
した（１）〜（４）式を満足させるようになっている。In this case, the Ni plating layer 2 has a rectangular waveform, and the distances A 1 and A 2 from the bearing surface and the pitch D of the waveform satisfy the above-described equations (1) to (4).
第３図はこの発明のさらに別の実施例の断面図を示
す。FIG. 3 shows a sectional view of still another embodiment of the present invention.
図において１は鉛基オーバレイ層、２はNi鍍金層、３
は銅−鉛層、４はスチールバック、５は軸、６はSn鍍金
層を示す。In the figure, 1 is a lead-based overlay layer, 2 is a Ni plating layer, 3
Indicates a copper-lead layer, 4 indicates a steel back, 5 indicates a shaft, and 6 indicates a Sn plating layer.
図に示すように鉛基オーバレイ層１の中間に0.5μ−
５μの厚さのSn鍍金層６を設けるようにして、運転中に
鉛基オーバレイ層１のSnが拡散しても鍍金層６からSnが
供給されるので、鉛基オーバレイ層１のSnの含有量は減
少しない。As shown in the figure, 0.5 μ-
By providing the Sn plating layer 6 having a thickness of 5 μm, Sn is supplied from the plating layer 6 even if Sn of the lead-based overlay layer 1 is diffused during operation. The amount does not decrease.
またSn鍍金層６は軟質層であるため、オーバレイ層に
要求される埋収性を疎外することはない。Further, since the Sn plating layer 6 is a soft layer, the embeddability required for the overlay layer is not excluded.
なお第４図に示すようにSn鍍金層を複数の層としても
良い。As shown in FIG. 4, the Sn plating layer may be a plurality of layers.
この実施例は銅−鉛層、鉛基オーバレイ層で構成され
る軸受について示したが、オーバレイ付アルミニュウム
合金軸受にも適用可能である。Although this embodiment has been described with respect to a bearing composed of a copper-lead layer and a lead-based overlay layer, the present invention is also applicable to an aluminum alloy bearing with an overlay.
以上のようにこの発明の実施例のものはNi鍍金層の波
形または矩形波形とすることによって耐焼付性向上を計
り、Sn鍍金層をオーバレイ層の中間に設けることによっ
てオーバレイ層の耐摩耗性の向上を計ることができた。As described above, in the case of the embodiment of the present invention, the seizure resistance is improved by making the waveform or the rectangular waveform of the Ni plating layer, and the wear resistance of the overlay layer is provided by providing the Sn plating layer in the middle of the overlay layer. The improvement was able to be measured.
（発明の効果） この発明は以上述べたようにしてなり、Ni鍍金層の形
状変更並びにオーバレイ層の中間に１層または複数層の
Sn鍍金層を設けることにより、オーバレイ層摩耗時のNi
鍍金層の露出を部分的にして耐焼付性の向上を計り、ま
たオーバレイ層のSn成分の拡散による減少を補完するこ
とができる。(Effects of the Invention) The present invention is as described above. One or more layers are formed between the Ni plating layer and the overlay layer.
By providing the Sn plating layer, it is possible to reduce the Ni
The plating layer is partially exposed to improve the seizure resistance, and to complement the decrease due to the diffusion of the Sn component in the overlay layer.
これによって軸受の耐焼付性、耐摩耗性を向上するこ
とができ、内燃機関の信頼性を高める点において資する
ところが大きい。Thereby, seizure resistance and wear resistance of the bearing can be improved, which greatly contributes to enhancing the reliability of the internal combustion engine.
第１図ないし第４図はそれぞれこの発明に係る４つの実
施例を示し、第５図は従来例を示し、第６図はSnの含有
量とオーバレイの摩耗量との関係を示すグラフである。 １……オーバレイ層、２……Ni鍍金層 ３……銅−鉛層、６……Sn鍍金層1 to 4 show four embodiments according to the present invention, FIG. 5 shows a conventional example, and FIG. 6 is a graph showing the relationship between the Sn content and the amount of overlay wear. . 1 ... overlay layer, 2 ... Ni plating layer 3 ... copper-lead layer, 6 ... Sn plating layer
Claims (1)
ーバレイの境界層に設けられたNi鍍金層とスチールバッ
クとによって形成される内燃機関用すべり軸受におい
て、Ni鍍金層を波形状とし、オーバレイの中間に１層ま
たは複数層のSn鍍金層を挿設した、内燃機関用すべり軸
受。In a sliding bearing for an internal combustion engine formed by a bearing alloy, an overlay, a Ni plating layer provided on a boundary layer between the bearing alloy and the overlay, and a steel bag, the Ni plating layer is formed into a corrugated shape. A sliding bearing for an internal combustion engine, in which one or more Sn plating layers are inserted in between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292449A JP2852521B2 (en) | 1988-11-21 | 1988-11-21 | Plain bearings for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292449A JP2852521B2 (en) | 1988-11-21 | 1988-11-21 | Plain bearings for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02142921A JPH02142921A (en) | 1990-06-01 |
| JP2852521B2 true JP2852521B2 (en) | 1999-02-03 |
Family
ID=17781944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63292449A Expired - Fee Related JP2852521B2 (en) | 1988-11-21 | 1988-11-21 | Plain bearings for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2852521B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2795305B2 (en) * | 1994-03-18 | 1998-09-10 | 大豊工業株式会社 | Plain bearing |
| JP2974042B2 (en) * | 1994-03-18 | 1999-11-08 | 大豊工業株式会社 | Plain bearing |
| JP2974044B2 (en) * | 1994-03-18 | 1999-11-08 | 大豊工業株式会社 | Plain bearing |
| JP2795306B2 (en) * | 1994-03-18 | 1998-09-10 | 大豊工業株式会社 | Bearing device |
| EP0758721B1 (en) * | 1995-03-01 | 2000-08-30 | Taiho Kogyo Co., Ltd. | Slide bearing |
| JP2001082481A (en) * | 1999-09-14 | 2001-03-27 | Daido Metal Co Ltd | Sliding bearing and its manufacture |
| JP3958719B2 (en) * | 2003-06-30 | 2007-08-15 | 大同メタル工業株式会社 | Sliding member |
| JP2009228776A (en) * | 2008-03-21 | 2009-10-08 | Mitsubishi Heavy Ind Ltd | Bearing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553856A (en) * | 1983-02-28 | 1985-11-19 | General Motors Corporation | Bearing having nickel-tin-copper barrier layer |
| AT385822B (en) * | 1984-02-27 | 1988-05-25 | Miba Gleitlager Ag | COMPOSITE SLIDING BEARING |
-
1988
- 1988-11-21 JP JP63292449A patent/JP2852521B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02142921A (en) | 1990-06-01 |
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