JPH04202637A - Sintered metallic material for oil retaining bearing having excellent fitness - Google Patents
Sintered metallic material for oil retaining bearing having excellent fitnessInfo
- Publication number
- JPH04202637A JPH04202637A JP2329462A JP32946290A JPH04202637A JP H04202637 A JPH04202637 A JP H04202637A JP 2329462 A JP2329462 A JP 2329462A JP 32946290 A JP32946290 A JP 32946290A JP H04202637 A JPH04202637 A JP H04202637A
- Authority
- JP
- Japan
- Prior art keywords
- friction
- sintered
- oil retaining
- oil
- alloy material
- 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
- 239000007769 metal material Substances 0.000 title claims description 7
- 239000012535 impurity Substances 0.000 claims abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000005245 sintering Methods 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract 4
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 5
- 239000011133 lead Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010723 turbine oil Substances 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
- F16C33/12—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
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
- F16C2204/12—Alloys based on copper with tin as the next major constituent
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
「発明の目的」
本発明はなじみ性に卓越した含油軸受用焼結金属材に係
り、摩擦係数が低くてなじみ性に著しく優れた含油軸受
用焼結金属材を提供しようとするものである。[Detailed Description of the Invention] "Object of the Invention" The present invention relates to a sintered metal material for oil-impregnated bearings that has excellent conformability, and provides a sintered metal material for oil-impregnated bearings that has a low coefficient of friction and extremely excellent conformability. This is what I am trying to do.
（産業上の利用分野）
携帯音響機器などのモータ軸その他の軸受用に適した含
油軸受を得るための焼結金属材。(Industrial application field) Sintered metal material for obtaining oil-impregnated bearings suitable for motor shafts and other bearings in portable audio equipment, etc.
（従来の技術）
近時においては持ち歩き可能な音響機器が普及し、その
他各種機器において小型モータおよびその軸受やこれに
連動せしめられるフライホイールやギヤーその他の回転
軸の軸受に銅系焼結含油軸受が採用されている。即ち、
ＪＴＳ規定においても、例えばＪＴＳ ５ＢＫ１２１８
に銅を主成分とし錫８〜１１ｗｔ％と黒鉛２ｗｔ％以下
を含有することが規定され、又ＪＩＳ ５ＢＫ２１１８
においては銅を主成分とし錫６〜１０−ｔ％、鉛５ｗｔ
％以下、黒鉛２ｗｔ％以下、亜鉛１ｗｔ％以下を含有す
ることが規定されている。(Prior art) Portable audio equipment has become popular in recent years, and copper-based sintered oil-impregnated bearings are used for small motors and their bearings, as well as for flywheels, gears, and other rotating shafts that are linked to these motors. has been adopted. That is,
In the JTS regulations, for example, JTS 5BK1218
It is specified that copper is the main component and contains 8 to 11 wt% of tin and 2 wt% or less of graphite, and JIS 5BK2118
The main component is copper, 6 to 10-t% tin, and 5 wt% lead.
% or less, graphite 2 wt % or less, and zinc 1 wt % or less.
又特公昭５２−５００２においては銅に対し錫と共に鉛
を２〜３４−ｔ％添加せしめ３５０〜５００℃で低温焼
結することが発表されている。Further, in Japanese Patent Publication No. 52-5002, it is announced that 2 to 34 tons of lead is added together with tin to copper, and the copper is sintered at a low temperature of 350 to 500°C.
（発明が解決しようとする課Ｂ）
ところが前記したような携帯音響機器の如きにおいては
電源容量に限界があり、より少い電力消費量で、しかも
少い電流により安定した作動の得られることが要求され
る。従って斯かる機器に使用されるモータその他の回転
軸ないし摺動部に用いられる軸受などにおいても高いな
じみ性と低摩擦係数とが要求される。然し上記したよう
な従来のものにおいては最近におけるこのような要請に
即応し得ないので、一部に鉛、黒鉛、二硫化モリブデン
等の固体潤滑剤を添加して補っているが、このような固
体潤滑剤は食添された油類の粘度を高めてトルクロスを
大ならしめ好ましい摩擦係数低減を得難い。(Problem B to be solved by the invention) However, in portable audio equipment as mentioned above, there is a limit to the power supply capacity, and it is difficult to obtain stable operation with less power consumption and less current. required. Therefore, bearings used in motors and other rotating shafts or sliding parts used in such equipment are also required to have high conformability and a low coefficient of friction. However, since the conventional lubricants mentioned above cannot immediately meet these recent demands, they are supplemented by adding solid lubricants such as lead, graphite, and molybdenum disulfide. Solid lubricants increase the viscosity of the added oil and increase the torque loss, making it difficult to obtain a desirable reduction in the coefficient of friction.
前記した特公昭５２−５００２のものは３５０〜５００
℃のような低温で焼結し得る有利性があるにしても、鉛
などをも併用するこのものでは人体に対する悪影響があ
り、又焼結が困難となることは該公報に記載の如くで、
更に含有せしめられる油類に相当の制限を受けざるを得
ないなどの不利がある。The one of the above-mentioned special public corporation Showa 52-5002 is 350-500
Even though it has the advantage of being able to be sintered at a low temperature such as ℃, it is stated in the publication that this product, which also contains lead, etc., has an adverse effect on the human body and is difficult to sinter.
Furthermore, there are disadvantages such as considerable restrictions on the oils that can be contained.
「発明の構成」
（課題を解決するための手段）
本発明は上記したような従来のものにおける課題を解消
するように検討して創案されたものであって以下の如く
である。"Structure of the Invention" (Means for Solving the Problems) The present invention was developed after consideration to solve the problems in the conventional products as described above, and is as follows.
錫を２〜５．５ｗｔ％含有し、残部が銅および不可避的
不純物より成り、圧粉成形、焼結組織とされたことを特
徴とするなじみ性に卓越した含油軸受用焼結金属材。A sintered metal material for oil-impregnated bearings containing 2 to 5.5 wt% of tin, the remainder consisting of copper and unavoidable impurities, and having excellent conformability, characterized by being formed into a compacted and sintered structure.
作用
銅をベースとした焼結金属材に錫を２ｗｔ％以上添加す
ることによって適度の強度を付与し摩擦係数を安定化す
る。この錫が２ｗｔ％未満では軸受材としての強度が低
くなりすぎ摩擦係数は不安定となる。Function Adding 2 wt% or more of tin to a sintered metal material based on copper imparts appropriate strength and stabilizes the coefficient of friction. If the tin content is less than 2 wt%, the strength as a bearing material becomes too low and the coefficient of friction becomes unstable.
錫の添加量を５．５ｗｔ％以下とすることによりこの錫
添加による強度付与を適度に抑制し、金属組織に伸び性
を与えて軸受体における負荷側（軸と接する側）の気孔
を回転ないし摺動作用の初期において閉塞化する。即ち
この種含油軸受においては軸の回転ないし摺動時に含有
された潤滑油がその粘性や熱膨張によって気孔から摺動
面に滲出し、この潤滑油によって軸と軸受との間に潤滑
膜が形成され潤滑作用することは公知の如くである。し
かしこの潤滑油も負荷側の気孔から軸受組織に戻ってし
まい潤滑膜が乏しくなって良好な潤滑状態は望めない。By controlling the amount of tin added to 5.5 wt% or less, the strength imparted by the addition of tin can be moderately suppressed, giving elongation to the metal structure and allowing the pores on the load side (the side in contact with the shaft) of the bearing body to rotate or It is occluded at the beginning of the sliding movement. In other words, in this type of oil-impregnated bearing, when the shaft rotates or slides, the lubricating oil contained in it oozes out from the pores onto the sliding surface due to its viscosity and thermal expansion, and this lubricating oil forms a lubricating film between the shaft and the bearing. It is well known that it acts as a lubricant. However, this lubricating oil also returns to the bearing structure through the pores on the load side, resulting in a poor lubricating film, making it impossible to expect a good lubrication state.
この場合において軸受体の負荷側（軸の下面と接する側
）における気孔が閉塞化することによって該負荷側での
潤滑膜が軸受体に再び滲入することを制限する。つまり
反負荷側から流出した潤滑油が負荷側において好ましい
潤滑膜を維持することとなり有効な液体潤滑条件を形成
する。In this case, the pores on the load side of the bearing body (the side in contact with the lower surface of the shaft) are blocked, thereby restricting the lubricant film on the load side from seeping into the bearing body again. In other words, the lubricating oil flowing out from the anti-load side maintains a favorable lubricating film on the load side, creating effective liquid lubrication conditions.
（実施例）
上記したような本発明によるものの具体的な実施例につ
いてその比較例と共に説明すると、銅を主成分とし、こ
れに錫を１．５〜９ｉｍｔ％の範囲で含有させた各種焼
結合金を製造し、検討した。気孔率については１５〜２
８容量％程度で適宜に実施でき、焼結温度も７００〜８
５０℃程度で実施できるが、代表的に気孔率１９容量％
、焼結温度７８０℃で実施した場合は以下の如くである
。(Example) Specific examples of the invention according to the present invention as described above will be explained together with comparative examples. Gold was manufactured and examined. 15-2 for porosity
It can be carried out appropriately at about 8% by volume, and the sintering temperature is also 700 to 8%.
It can be carried out at about 50℃, but typically the porosity is 19% by volume.
, when carried out at a sintering temperature of 780°C, the results are as follows.
錫を３ｉｎｔ％、５ｗｔ％、７ｗｔ％および９賀Ｌ％と
夫々含有した内径６ｆｌ、外径１２ｍ、長さ６ｆｉの各
銅−錫軸受材を焼結、サイジング後にタービン油３２ｃ
ｓｔ相当を夫々含浸させた各試料とした。After sintering and sizing copper-tin bearing materials with an inner diameter of 6 fl, an outer diameter of 12 m, and a length of 6 fi containing tin at 3 int%, 5 wt%, 7 wt%, and 9 kL%, turbine oil 32 c was applied.
Each sample was impregnated with a substance equivalent to st.
このようにして得られた前記４種の含油軸受について、
周速３８ｍ／ｓｉｎ 、 ＰＶ値を１９０．３６０．５
３０．６９０および１０３０に変化させ、夫々回転試験
した結果は添附図面に示す如くであった。Regarding the four types of oil-impregnated bearings obtained in this way,
Circumferential speed 38m/sin, PV value 190.360.5
30.690 and 1030, respectively, and the results of rotation tests were as shown in the attached drawings.
即ち、第１図はＰＶ値に対する摩擦係数の変化を示した
ものでＳｎ含有量３ｗｔ％および５ｗｔ％のものは他の
７ｗｔ％および９ｗｔ％のものに比し、低Ｐｖ値から高
ｐｖ値の全域において摩擦係数が低い。That is, Figure 1 shows the change in friction coefficient with respect to PV value, and those with Sn content of 3wt% and 5wt% are compared to those with Sn content of 7wt% and 9wt%, and the change in friction coefficient from low Pv value to high pv value. Low coefficient of friction throughout the entire area.
又第２図にはＰＶ値が５３０の場合における摩擦係数の
経時変化を前記各試料について示したが、Ｓｎ量が７ｗ
ｔ％および９ｗｔ％のものは６０ｍ１ｎ経過後において
も不安定状態であるのに対し、Ｓｎ量３ｗｔ％および５
ｗｔ％のものは５〜１０ｍ１ｎ程度で安定化し、又０．
０２〜０．０３μの低い値を示している。Figure 2 shows the change in friction coefficient over time for each sample when the PV value is 530.
Sn contents of 3 wt% and 5 wt% are unstable even after 60 m1n have elapsed.
wt% is stabilized at about 5 to 10 m1n, and 0.
It shows a low value of 02 to 0.03μ.
なおＳｎ量が２ｗｔ％のものは前記したＳｎ：５ｗｔ％
のものと同様な摩擦係数を示したが、このＳｎ量が１．
５ｗｔ％としたものにおいては摩擦係数が急激に上昇し
、前記した第１．２図におけるＳｎニアｉｖｔ％に準じ
た結果を示した。又Ｓｎが３，８〜５．３ｗｔ％のもの
はｐｖ値９００前後で摩擦係数が０．０１μ程度と最低
状態を示すと共に７〜８分で安定状態となるが、このＳ
ｎが５．８ｗｔ％となるとＰＶ値５００で摩擦係数が０
．０４〜０．０５μと高くなり、４０〜５０ｍ１ｎ経過
しても若干の不安定状態を示した。Note that the Sn content of 2wt% is the above-mentioned Sn: 5wt%.
It showed a friction coefficient similar to that of the Sn content of 1.
When the content was 5wt%, the friction coefficient increased rapidly, and the results were similar to the Sn near ivt% in Fig. 1.2 described above. In addition, those with Sn content of 3.8 to 5.3 wt% show the lowest state of friction coefficient of about 0.01 μ at a pv value of around 900, and reach a stable state in 7 to 8 minutes.
When n is 5.8wt%, the PV value is 500 and the friction coefficient is 0.
．． It became as high as 04 to 0.05μ, and showed a slightly unstable state even after 40 to 50 m1.
「発明の効果」
以上説明したような本発明によるときは軸材に対するな
じみ性が頗る良好で、回転の初期において摩擦係数を急
速に低下しその後は安定した低摩擦係数を維持し得るも
のであって、近時において広く普及している携帯音響機
器などの電源・電力などに限定のある機器類の如きに採
用することにより好ましい安定した特性を発揮し得るも
のであるから工業的にその効果の大きい発明である。"Effects of the Invention" According to the present invention as explained above, the conformability to the shaft material is extremely good, and the coefficient of friction can be rapidly reduced at the beginning of rotation, and a stable low coefficient of friction can be maintained thereafter. Therefore, it can exhibit favorable and stable characteristics when used in devices with limited power supplies such as portable audio equipment, which have become widespread in recent years. This is a great invention.
図面は本発明の技術的内容を示すものであって、第１図
は本発明によるものおよびその比較材についてのｐｖ値
と摩擦係数の関係を示した図表、第２図はｐｖ値５３０
の場合における時間経過に伴う摩擦係数の変化を第１図
と同しものについて示した図表である。
脅故陳ヰすThe drawings show the technical contents of the present invention, and Figure 1 is a chart showing the relationship between pv value and friction coefficient for materials according to the present invention and comparative materials, and Figure 2 is a graph showing the relationship between pv value and friction coefficient of materials according to the present invention and comparative materials.
2 is a chart showing changes in the coefficient of friction over time in the same case as in FIG. 1; Make a threat statement
Claims (1)
不純物より成り、圧粉成形、焼結組織とされたことを特
徴とするなじみ性に卓越した含油軸受用焼結金属材。A sintered metal material for an oil-impregnated bearing with excellent conformability, characterized by containing 2 to 5.5% of tin, the remainder consisting of copper and unavoidable impurities, and having a compacted and sintered structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2329462A JPH0832936B2 (en) | 1990-11-30 | 1990-11-30 | Sintered metal material for oil-impregnated bearings with excellent compatibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2329462A JPH0832936B2 (en) | 1990-11-30 | 1990-11-30 | Sintered metal material for oil-impregnated bearings with excellent compatibility |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04202637A true JPH04202637A (en) | 1992-07-23 |
| JPH0832936B2 JPH0832936B2 (en) | 1996-03-29 |
Family
ID=18221648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2329462A Expired - Lifetime JPH0832936B2 (en) | 1990-11-30 | 1990-11-30 | Sintered metal material for oil-impregnated bearings with excellent compatibility |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832936B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000230556A (en) * | 1999-02-09 | 2000-08-22 | Nippon Kagaku Yakin Co Ltd | Bearing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435565A (en) * | 1977-08-23 | 1979-03-15 | Sumitomo Electric Ind Ltd | Pressing device for brake pad |
| JPS5934223A (en) * | 1982-08-19 | 1984-02-24 | 松下電器産業株式会社 | Automatic rice cooking apparatus |
-
1990
- 1990-11-30 JP JP2329462A patent/JPH0832936B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435565A (en) * | 1977-08-23 | 1979-03-15 | Sumitomo Electric Ind Ltd | Pressing device for brake pad |
| JPS5934223A (en) * | 1982-08-19 | 1984-02-24 | 松下電器産業株式会社 | Automatic rice cooking apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000230556A (en) * | 1999-02-09 | 2000-08-22 | Nippon Kagaku Yakin Co Ltd | Bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0832936B2 (en) | 1996-03-29 |
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