JP2003184882A - Oil-impregnated sintered bearing material - Google Patents
Oil-impregnated sintered bearing materialInfo
- Publication number
- JP2003184882A JP2003184882A JP2001379533A JP2001379533A JP2003184882A JP 2003184882 A JP2003184882 A JP 2003184882A JP 2001379533 A JP2001379533 A JP 2001379533A JP 2001379533 A JP2001379533 A JP 2001379533A JP 2003184882 A JP2003184882 A JP 2003184882A
- Authority
- JP
- Japan
- Prior art keywords
- bearing material
- bearing
- copper
- weight
- oil
- 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.)
- Pending
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
- F16C2204/00—Metallic materials; Alloys
- F16C2204/10—Alloys based on copper
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、とくにＶＴＲやカセッ
トテープレコーダーのような、比較的低速回転の小型駆
動モーター用軸受として有用な焼結含油軸受材に関し、
モーター軸に対する馴染み性の向上をはかるとともに、
モーター軸に対する摺動抵抗の低減をはかることを目的
とする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sintered oil-impregnated bearing material which is particularly useful as a bearing for a small drive motor which rotates at a relatively low speed such as a VTR or a cassette tape recorder.
While trying to improve the familiarity with the motor shaft,
The purpose is to reduce sliding resistance to the motor shaft.
【０００２】[0002]
【従来の技術】音響機器等の駆動モーター軸受材として
従来一般に知られているものには、例えば銅を主成分と
するとともに、これに錫を２〜５．５（重量）％の低い
添加量の範囲で抑えた焼結金属材としたもの（特開平４
−２０２６３７号公報）、あるいは銅に対し、錫ととも
に鉛を２〜３４（重量）％添加したものを３５０〜５０
０℃にて低温焼結するようにした銅系の材料（特公昭５
２−５００２号公報）などがある。2. Description of the Related Art Conventionally known drive motor bearing materials for audio equipment include, for example, copper as a main component, and tin with a low addition amount of 2 to 5.5% by weight. Sintered metal material suppressed within the range of
-202637), or 350 to 50 in which lead is added to copper with tin in an amount of 2 to 34% by weight.
A copper-based material that was sintered at low temperature at 0 ° C (Japanese Patent Publication No.
2-5002).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前者の
ものはモーター軸に対する馴染み性が不十分であり、こ
の馴染み性を改善するために錫の添加量を抑えて硬度を
下げると軸受としての必要強度が低下してしまい、馴染
み性の問題以外に軸受材として本来的に必要な耐磨耗性
などの特性が得られなくなるなどの問題がある。 また
後者のものにあっては、有害な鉛を使用するために作業
環境や地球環境上の問題のほか、含浸させる油として鉛
と反応しないものを選択する必要があるという制約を伴
うために、コストの上昇その他の不都合を生ずるなどの
問題がある。However, the former one is not sufficiently compatible with the motor shaft, and if the addition amount of tin is suppressed to reduce the hardness in order to improve this familiarity, the required strength as a bearing is required. In addition to the problem of familiarity, there is a problem that characteristics such as abrasion resistance originally required as a bearing material cannot be obtained. In addition, in the latter case, in addition to working environment and global environment problems due to the use of harmful lead, there is a restriction that it is necessary to select an oil that does not react with lead as an oil to be impregnated, There are problems such as increased costs and other inconveniences.
【０００４】[0004]
【課題を解決するための手段】そこで本発明にあって
は、純銅に近い低硬度であるにもかかわらず、軸受材と
して十分な強度と耐磨耗性を有する焼結含油軸受材を開
発したものであって、具体的には、請求項１の発明は、
銅被覆鉄粉を主材とする錫・鉛非含有の素材金属粉を圧
粉成形した軸受素材を焼結してなる焼結含油軸受材に関
する。 また請求項２の発明は、銅被覆鉄粉が、被覆す
るための銅に対する鉄の割合が３０〜８０（重量）％の
範囲内にあるところの請求項１に記載の焼結含油軸受材
に関する。Therefore, in the present invention, a sintered oil-impregnated bearing material having sufficient strength and abrasion resistance as a bearing material despite having a low hardness close to that of pure copper has been developed. Specifically, the invention of claim 1 is
TECHNICAL FIELD The present invention relates to a sintered oil-impregnated bearing material obtained by sintering a bearing material obtained by compacting a raw material metal powder not containing tin / lead containing copper-coated iron powder as a main material. Further, the invention of claim 2 relates to the sintered oil-impregnated bearing material according to claim 1, wherein the copper-coated iron powder has a ratio of iron to copper for coating in the range of 30 to 80 (weight)%. .
【０００５】さらに請求項３の発明は、素材金属粉の成
分に占める鉄の割合が、１５〜３８（重量）％の範囲内
であるところの請求項１〜２に記載の焼結含油軸受材に
関する。 さらに請求項４の発明は、素材金属粉の成分
中に亜鉛を０．８〜４（重量）％含有させたことを特徴
とする請求項１〜３に記載の焼結含油軸受材に関する。
さらに請求項５の発明は、素材金属粉に対し、亜鉛を
黄銅粉として添加してなるところの請求項１〜４に記載
の焼結含油軸受材に関する。Further, the invention of claim 3 is the sintered oil-impregnated bearing material according to claim 1 or 2, wherein the ratio of iron in the components of the raw material metal powder is in the range of 15 to 38 (weight)%. Regarding Furthermore, the invention of claim 4 relates to the sintered oil-impregnated bearing material according to any one of claims 1 to 3, wherein zinc is contained in the raw material metal powder in an amount of 0.8 to 4% by weight.
Furthermore, the invention of claim 5 relates to the sintered oil-impregnated bearing material according to claims 1 to 4, wherein zinc is added as brass powder to the raw metal powder.
【０００６】さらに請求項６の発明は、軸受素材が、固
体潤滑剤非含有であるところの請求項１〜５に記載の焼
結含油軸受材に関する。 さらに請求項７の発明は、軸
受材が１５０ｒｐｍ／ｍｉｎ以下の低速回転駆動モータ
ー用であるところの請求項１〜６に記載の焼結含油軸受
材に関する。Further, the invention of claim 6 relates to the sintered oil-impregnated bearing material according to any one of claims 1 to 5, wherein the bearing material contains no solid lubricant. Furthermore, the invention of claim 7 relates to the sintered oil-impregnated bearing material according to any one of claims 1 to 6, wherein the bearing material is for a low speed rotation drive motor of 150 rpm / min or less.
【０００７】上記した構成において、本願の発明は、軸
受素材を圧粉成型するための素材金属粉の主材として銅
被覆鉄粉が用いられるところから、原料粉末の状態で鉄
と銅とが強固に結合しており、その結果純銅に近い低硬
度と、軸受材として要求される十分な強度とを両立させ
ることができるばかりでなく、軸受素材中に錫や鉛を含
有しないために、軸受の硬度上昇による馴染み性の悪化
を防止でき、また作業環境や地球環境を乱す有害性を除
去することが可能となる。In the above-mentioned structure, according to the invention of the present application, since the copper-coated iron powder is used as the main material of the raw material metal powder for compacting the bearing material, the iron and copper are strong in the raw material powder state. As a result, not only can the low hardness close to that of pure copper and the sufficient strength required as a bearing material be achieved at the same time, but the bearing material does not contain tin or lead. It is possible to prevent the deterioration of the familiarity due to the increase in hardness, and it is possible to remove the harmfulness that disturbs the work environment and the global environment.
【０００８】また、上記の素材金属粉成分中に亜鉛を
０．８〜４（重量）％含有させたために、粉末冶金での
硬度上昇をさせることなく軸受強度を向上させることが
可能となる。 さらに素材金属粉が、固体潤滑剤非含有
であるために焼結体の強度を低下させたり、あるいは馴
染みの過程において過剰な潤滑効果を発揮し、結果的に
馴染みを遅延させるようなことを防止し、また潤滑油中
に懸濁してトルクロスを増大させるのを防ぐことができ
る。Further, since 0.8 to 4 (weight)% of zinc is contained in the above-mentioned raw material metal powder component, it becomes possible to improve the bearing strength without increasing hardness in powder metallurgy. In addition, the material metal powder does not contain a solid lubricant, which prevents the strength of the sintered body from decreasing, or prevents excessive lubrication during the familiarization process, resulting in delaying the familiarization. In addition, it can be prevented from being suspended in the lubricating oil to increase the torcross.
【０００９】[0009]
【発明の実施の形態】以下において本発明の具体的な内
容を実施例をもとに説明すると、図１には本発明による
軸受材の一例が示されている。 この軸受材１は銅被覆
鉄粉を主材とし、錫および鉛を含有しない素材金属粉を
軸受形状に圧粉成形して軸受素材とするとともに、さら
に該軸受素材を焼結・サイジングした後、潤滑油を含浸
させて完成されるものである。 すなわちここで使用さ
れる銅被覆鉄粉は鉄粉粒子の表面を銅被覆したものであ
って、これは既知の鉄粉粒子表面に対する銅メッキ加工
などにより得ることができる。BEST MODE FOR CARRYING OUT THE INVENTION The specific contents of the present invention will be described below with reference to Examples. FIG. 1 shows an example of a bearing material according to the present invention. The bearing material 1 is mainly composed of copper-coated iron powder, and a raw material metal powder containing no tin or lead is compacted into a bearing shape to obtain a bearing material. Further, after the bearing material is sintered and sized, It is completed by impregnating it with lubricating oil. That is, the copper-coated iron powder used here is obtained by coating the surface of iron powder particles with copper, and this can be obtained by a known copper plating process on the surface of iron powder particles.
【００１０】なおこの場合における銅に対する鉄の割合
が３０（重量）％を下回った場合、すなわち銅が７０
（重量）％を超えた場合には、モーター軸に対する馴染
み性が良好である半面、馴染み後の磨耗の進行が止まら
ないために軸受材として実用に供し得ないことに加え、
著しくコスト高となるばかりでなく軸受として必要な強
度が得られなくなる。 また反対に鉄の割合が８０（重
量）％を超えた場合、すなわち銅が２０（重量）％を下
回った場合にはモーター軸に対する十分な馴染み性が得
られなくなることが実験の結果明らかとなった。In this case, when the ratio of iron to copper is less than 30 (weight)%, that is, copper is 70%.
If it exceeds (weight)%, the conformability to the motor shaft is good, but on the other hand, it cannot be put to practical use as a bearing material because the wear does not continue to progress after the conformation.
Not only will the cost be extremely high, but the strength required for the bearing will not be obtained. On the other hand, when the ratio of iron exceeds 80 (weight)%, that is, when the content of copper is less than 20 (weight)%, it is clear from the results of experiments that sufficient compatibility with the motor shaft cannot be obtained. It was
【００１１】したがってここでは馴染み性が良好である
ために必要かつ十分な銅を使用するとともに、馴染み後
における摩耗の進行を停止するために必要かつ十分な鉄
を用いる必要があることになる。 このような観点より
種々実験を試みた結果、銅被覆鉄粉を主材とする場合
の、被覆するための銅に対する鉄の割合については３０
〜８０（重量）％の範囲内である必要があることが判明
した。Therefore, here, it is necessary to use copper which is necessary and sufficient in order to have a good conformability and to use iron which is necessary and sufficient to stop the progress of wear after conforming. As a result of conducting various experiments from such a viewpoint, the ratio of iron to copper for coating when the copper-coated iron powder was the main material was 30.
It has been found that it needs to be in the range of -80 (wt)%.
【００１２】上記した銅被覆鉄粉を主材とした素材金属
粉を軸受の形状に圧粉成形して軸受素材を形成する。
なおここで使用される銅被覆鉄粉等の素材金属粉中には
錫や鉛を含有させない。 何故ならば錫を添加すると軸
受材の硬度が上昇し、ここで必要な馴染み性の実現が困
難となり、また鉛は作業環境や地球環境に対して有害で
あるからである。 さらに固体潤滑剤についても焼結体
の強度を低下させ、また馴染みの過程において過剰な潤
滑効果を発揮する結果、かえって馴染みを遅延させるこ
とになりがちであること、さらに含浸させた潤滑油中に
懸濁してトルクロスを増大させるおそれがあることなど
の理由から、黒鉛や二硫化モリブデン、あるいはＢＮを
はじめとした各種の固体潤滑剤の添加はおこなわない。[0012] A raw material metal powder containing the above-mentioned copper-coated iron powder as a main material is compacted into a bearing shape to form a bearing material.
It should be noted that the raw material metal powder such as the copper-coated iron powder used here does not contain tin or lead. This is because the addition of tin increases the hardness of the bearing material, making it difficult to achieve the familiarity required here, and lead is harmful to the working environment and the global environment. Furthermore, solid lubricants also reduce the strength of the sintered body, and as a result of exerting an excessive lubricating effect in the process of acclimatization, they tend to delay the acclimatization, and further Various solid lubricants such as graphite, molybdenum disulfide, and BN are not added for the reason that they may be suspended to increase torcross.
【００１３】上記した銅被覆鉄粉を主材とした圧粉成形
前の素材金属粉に対して、さらに鉄粉を添加する。 こ
の場合の鉄粉の添加量については、金属粉における成分
に占める鉄の割合が１５（重量）％を下回ると軸受とし
ての必要強度および耐磨耗性が不十分となり、また反対
に３８（重量）％を超えると軸受表面に露出しやすくな
って銅の馴染み性を損ない、しかも耐蝕性を低下させる
ことになる。 したがってこの場合の素材金属粉におけ
る成分に占める鉄の割合については１５〜３８（重量）
％の範囲内である必要がある。Iron powder is further added to the above-mentioned raw material metal powder which is mainly composed of the copper-coated iron powder and has not been compacted. Regarding the amount of iron powder added in this case, if the ratio of iron to the components in the metal powder is less than 15 (weight)%, the required strength and wear resistance as a bearing become insufficient, and conversely 38 (weight) )% Is more likely to be exposed on the surface of the bearing, impairing the familiarity of copper and lowering the corrosion resistance. Therefore, the ratio of iron to the components in the raw metal powder in this case is 15 to 38 (weight).
It must be within the range of%.
【００１４】さらに上記素材金属粉に対して少量の亜鉛
を添加する。 亜鉛は粉末冶金において、焼結の過程で
逐次亜鉛が気散し、成形により弱く結合している粉末同
士のネック部に再付着するために、これを少量添加する
ことにより硬度を上昇させることなく軸受の強度を向上
させ、また耐食性をも向上させることができる。 しか
しその添加量については０．８（重量）％を下回るとあ
まり効果が無く、また反対に４（重量）％を超えても軸
受の硬度が上昇して馴染み性が得られなくなることが実
験の結果明らかとなった。 したがってこの場合におけ
る素材金属粉に対する亜鉛の添加量については０．８〜
４（重量）％の範囲内である必要がある。Further, a small amount of zinc is added to the raw metal powder. In powder metallurgy, zinc gradually diffuses during the process of sintering and redeposits on the necks of powders that are weakly bonded by molding, so adding a small amount of zinc does not increase the hardness. It is possible to improve the strength of the bearing and also improve the corrosion resistance. However, if the amount of addition is less than 0.8 (wt)%, there is little effect, and if it exceeds 4 (wt)%, the hardness of the bearing increases and it becomes impossible to obtain familiarity. The result is clear. Therefore, the amount of zinc added to the raw metal powder in this case is 0.8-
It must be within the range of 4 (weight)%.
【００１５】さらに上記素材金属粉に対する亜鉛の添加
は、黄銅粉として添加することができる。 具体的には
銅被覆鉄粉を主材とした素材金属粉に対し、適量の黄銅
粉を添加することもあるが、この場合においては亜鉛を
黄銅合金粉として添加することが合理的である。Further, zinc can be added to the raw material metal powder as brass powder. Specifically, an appropriate amount of brass powder may be added to the raw metal powder mainly composed of copper-coated iron powder, but in this case, it is rational to add zinc as a brass alloy powder.
【００１６】また焼結後における軸受材に対しては、潤
滑油を含浸させる都合上、通気度がある程度高めである
必要があるが、あまり高すぎてもモーター軸に対する潤
滑油の過剰な消費が進行することと、また軸受としての
必要強度を維持することが困難となることなどの状況か
ら、実験の結果、焼結後の軸受材の通気度が、５〜５０
×１０ー３程度であるのが理想的であることが判明し
た。For the bearing material after sintering, it is necessary to have a certain degree of air permeability for the purpose of impregnating the lubricating oil, but if it is too high, excessive consumption of lubricating oil to the motor shaft will occur. As a result of the experiments, the air permeability of the bearing material after sintering was 5 to 50 due to the fact that it was difficult to maintain the required strength as a bearing.
It has been found that it is ideal that it is approximately 10 −3 .
【００１７】さらに本願の上記した発明に係る焼結含油
軸受材は、とくにＶＴＲやカセットテープレコーダーの
ような、１５０ｒｐｍ／ｍｉｎ以下の比較的低速回転の
小型駆動モーター用軸受として有用である。Further, the sintered oil-impregnated bearing material according to the above-mentioned invention of the present application is particularly useful as a bearing for a small drive motor such as a VTR or a cassette tape recorder which rotates at a relatively low speed of 150 rpm / min or less.
【００１８】[0018]
【実施例１】鉄４０（重量）％、銅６０（重量）％の銅
被覆鉄粉１００重量部に対し、亜鉛３０（重量）％の黄
銅粉を１５重量部添加して素材金属粉とし、さらにこれ
を密度７．０ｇ／ｃｍ３で軸受形状に圧粉成形して軸受
素材を成形するとともに、さらにこれを８００℃で焼結
後サイジングした。 これによって圧環強度２２ｋｇｆ
／ｍｍ２ の軸受材が得られた。Example 1 15 parts by weight of brass powder containing 30% by weight of zinc was added to 100 parts by weight of copper-coated iron powder containing 40% by weight of iron and 60% by weight of copper to obtain a raw metal powder. Further, this was pressed into a bearing shape with a density of 7.0 g / cm 3 to form a bearing material, and this was further sintered at 800 ° C. and then sized. With this, radial crushing strength of 22 kgf
A bearing material of / mm 2 was obtained.
【００１９】[0019]
【実施例２】鉄７０（重量）％、銅３０（重量）％の銅
被覆鉄粉１００重量部に対し、亜鉛２０（重量）％の黄
銅粉を１０重量部と銅粉３０重量部を添加し、実施例１
と同様の手法により軸受材を作成した。 これによって
含油率１５％、圧環強度３０ｋｇｆ／ｍｍ２ の軸受材
が得られた。Example 2 10 parts by weight of brass powder containing 20% by weight of zinc and 30 parts by weight of copper powder were added to 100 parts by weight of copper-coated iron powder containing 70% by weight of iron and 30% by weight of copper. Example 1
A bearing material was prepared by the same method as in. As a result, a bearing material having an oil content of 15% and a radial crushing strength of 30 kgf / mm 2 was obtained.
【００２０】〔比較例１〕鉄粉と銅粉を重量比４０：６
０で混合したもの１００重量部に亜鉛３０％の黄銅粉１
５重量部添加し、実施例１と同様の手法により軸受材を
作成した。 得られた軸受材は、含油率２０ｖｏｌ％、
圧環強度１４ｋｇｆ／ｍｍ２であった。[Comparative Example 1] Iron powder and copper powder in a weight ratio of 40: 6
Brass powder with 30% zinc in 100 parts by weight mixed with 0
5 parts by weight were added, and a bearing material was prepared in the same manner as in Example 1. The obtained bearing material has an oil content of 20 vol%,
The radial crushing strength was 14 kgf / mm 2 .
【００２１】〔比較例２〕上記した比較例１と同様の組
成のものを、焼結温度１，０００℃のもとで焼結して軸
受材を作成した。 得られた軸受材は、含油率：２０ｖ
ｏｌ％、圧環強度３２ｋｇｆ／ｍｍ２であった。[Comparative Example 2] A bearing material was prepared by sintering a material having the same composition as in Comparative Example 1 described above at a sintering temperature of 1,000 ° C. The obtained bearing material has an oil content of 20v.
It was ol% and radial crushing strength was 32 kgf / mm 2 .
【００２２】〔比較例３〕錫を５（重量）％含有させた
銅粉を用いて実施例１と同様の手法により軸受材を作成
した。 得られた軸受材は、含油率：２０ｖｏｌ％、圧
環強度２６ｋｇｆ／ｍｍ２であった。Comparative Example 3 A bearing material was prepared in the same manner as in Example 1 by using copper powder containing 5% by weight of tin. The obtained bearing material had an oil content of 20 vol% and a radial crushing strength of 26 kgf / mm 2 .
【００２３】上記実施例１〜２と、比較例１〜３により
得られた各焼結体にタービン油３２ｃSt相当を含浸させ
て、それぞれの摩擦係数を測定したところ、結果は図２
に示した通りである。 すなわち実施例１と実施例２の
軸受材については、共に馴染みが早く、しかも馴染み後
の摩擦係数も低いのに対し、比較例２の軸受は馴染みが
遅く、しかも馴染み後の摩擦係数も高い。 また比較例
１の軸受材は、馴染み性の面においては実施例１・２に
近い値を示したものの、試験後の軸受内面の摩耗量が５
μｍであり、実施例１、実施例２および比較例２の軸受
材の試験後における各摩耗量１．５μｍ、１．１μｍ、
０．７μｍよりも摩耗量が大きいことが解った。Each of the sintered bodies obtained in Examples 1 and 2 and Comparative Examples 1 to 3 was impregnated with turbine oil of 32 cSt and the friction coefficient of each was measured.
As shown in. In other words, the bearing materials of Example 1 and Example 2 both have a fast acclimation and a low coefficient of friction after acclimation, whereas the bearing of Comparative Example 2 has a slow acclimation and a high coefficient of friction after acclimation. The bearing material of Comparative Example 1 showed a value close to those of Examples 1 and 2 in terms of familiarity, but the amount of wear on the inner surface of the bearing after the test was 5
μm, and the wear amounts of the bearing materials of Examples 1, 2 and Comparative Example 2 after the tests were 1.5 μm and 1.1 μm, respectively.
It was found that the wear amount was larger than 0.7 μm.
【００２４】[0024]
【発明の効果】本発明の焼結含油軸受材は、上記した通
り銅被覆鉄粉を主材とする錫・鉛非含有の素材金属粉を
圧粉成形した軸受素材を焼結してなるものであるため
に、純銅に近い低硬度を実現でき、その結果モーター軸
に対する馴染み性が良く、またモーター軸に対する摺動
抵抗の低減をはかることができ、かつ軸受として必要な
強度を維持することができる。 従って本発明の軸受材
はとくにＶＴＲやカセットテープレコーダーのような、
比較的低速回転の小型駆動モーター用軸受として有用で
ある。EFFECTS OF THE INVENTION The sintered oil-impregnated bearing material of the present invention is obtained by sintering a bearing material obtained by compacting a tin / lead-free material metal powder containing copper-coated iron powder as a main material as described above. Therefore, it is possible to achieve low hardness close to that of pure copper, resulting in good conformability to the motor shaft, reduction in sliding resistance to the motor shaft, and maintenance of the strength required for the bearing. it can. Therefore, the bearing material of the present invention is particularly suitable for VTRs and cassette tape recorders.
It is useful as a bearing for a small drive motor that rotates at a relatively low speed.
【００２５】さらに素材金属粉中には錫を含有しないた
めに、軸受の硬度を上昇させることがなく、しかも有害
な鉛を含まないところから作業環境や地球環境上におい
ても問題が無く、さらに軸受材に含有させる潤滑油につ
いても鉛との反応性の有無による選択上の制約もないた
めにコストの低減をはかることができる。Further, since the raw material metal powder does not contain tin, the hardness of the bearing is not increased, and since it does not contain harmful lead, there is no problem in working environment and global environment. Since there is no restriction on the selection of the lubricating oil contained in the material depending on the presence or absence of reactivity with lead, the cost can be reduced.
【図１】本発明の第１実施例である焼結含油軸受材の拡
大断面図。FIG. 1 is an enlarged sectional view of a sintered oil-impregnated bearing material that is a first embodiment of the present invention.
【図２】本発明の実施例１・２と比較例１〜３との馴染
み性と摩擦係数のそれぞれの測定結果を比較したグラ
フ。FIG. 2 is a graph comparing the measurement results of familiarity and friction coefficient between Examples 1 and 2 of the present invention and Comparative Examples 1 to 3.
１ 軸受材 1 Bearing material
Claims (7)
材金属粉を圧粉成形した軸受素材を焼結してなる焼結含
油軸受材。1. A sintered oil-impregnated bearing material obtained by sintering a bearing material obtained by compacting and compacting a tin / lead-free material metal powder containing copper-coated iron powder as a main material.
鉄の割合が３０〜８０（重量）％の範囲内にあるところ
の請求項１に記載の焼結含油軸受材。2. The sintered oil-impregnated bearing material according to claim 1, wherein the copper-coated iron powder has a ratio of iron to copper for coating in the range of 30 to 80% by weight.
５〜３８（重量）％の範囲内であるところの請求項１〜
２に記載の焼結含油軸受材。3. The ratio of iron in the raw material metal powder is 1
Claim 1 which is within the range of 5 to 38 (weight)%.
The sintered oil-impregnated bearing material according to 2.
（重量）％含有させたことを特徴とする請求項１〜３に
記載の焼結含油軸受材。4. Zinc is 0.8 to 4 in the raw material metal powder.
The sintered oil-impregnated bearing material according to claim 1, wherein the sintered oil-impregnated bearing material is contained in (weight)%.
加してなるところの請求項１〜４に記載の焼結含油軸受
材。5. The sintered oil-impregnated bearing material according to claim 1, wherein zinc is added as brass powder to the raw material metal powder.
ろの請求項１〜５に記載の焼結含油軸受材。6. The sintered oil-impregnated bearing material according to claim 1, wherein the bearing material does not contain a solid lubricant.
回転駆動モーター用であるところの請求項１〜６に記載
の焼結含油軸受材。7. The sintered oil-impregnated bearing material according to claim 1, wherein the bearing material is for a low speed rotation drive motor of 150 rpm / min or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001379533A JP2003184882A (en) | 2001-12-13 | 2001-12-13 | Oil-impregnated sintered bearing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001379533A JP2003184882A (en) | 2001-12-13 | 2001-12-13 | Oil-impregnated sintered bearing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003184882A true JP2003184882A (en) | 2003-07-03 |
Family
ID=27591062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001379533A Pending JP2003184882A (en) | 2001-12-13 | 2001-12-13 | Oil-impregnated sintered bearing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003184882A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5059022B2 (en) * | 2006-11-17 | 2012-10-24 | Ｊｘ日鉱日石金属株式会社 | Iron-copper composite powder for powder metallurgy and method for producing the same |
| EP2980964A1 (en) * | 2013-03-25 | 2016-02-03 | NTN Corporation | Method for manufacturing sintered bearing, sintered bearing, and vibration motor equipped with same |
| CN105964911A (en) * | 2016-06-30 | 2016-09-28 | 广东中欧卫浴用品有限公司 | Method for preparing unleaded brass tap |
| US20190055986A1 (en) * | 2016-02-25 | 2019-02-21 | Ntn Corporation | Oil-impregnated sintered bearing and method for manufacturing same |
| WO2019223077A1 (en) * | 2018-05-21 | 2019-11-28 | 海安县鹰球粉末冶金有限公司 | Method for manufacturing oil-retaining bearing applied to automobile lamp motor |
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2001
- 2001-12-13 JP JP2001379533A patent/JP2003184882A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5059022B2 (en) * | 2006-11-17 | 2012-10-24 | Ｊｘ日鉱日石金属株式会社 | Iron-copper composite powder for powder metallurgy and method for producing the same |
| EP2980964A1 (en) * | 2013-03-25 | 2016-02-03 | NTN Corporation | Method for manufacturing sintered bearing, sintered bearing, and vibration motor equipped with same |
| EP2980964A4 (en) * | 2013-03-25 | 2017-05-03 | NTN Corporation | Method for manufacturing sintered bearing, sintered bearing, and vibration motor equipped with same |
| CN110043564A (en) * | 2013-03-25 | 2019-07-23 | Ntn株式会社 | The manufacturing method and vibrating motor of sintered bearing |
| US10536048B2 (en) | 2013-03-25 | 2020-01-14 | Ntn Corporation | Method for manufacturing sintered bearing, sintered bearing, and vibration motor equipped with same |
| US20190055986A1 (en) * | 2016-02-25 | 2019-02-21 | Ntn Corporation | Oil-impregnated sintered bearing and method for manufacturing same |
| US10753395B2 (en) * | 2016-02-25 | 2020-08-25 | Ntn Corporation | Oil-impregnated sintered bearing and method for manufacturing same |
| CN105964911A (en) * | 2016-06-30 | 2016-09-28 | 广东中欧卫浴用品有限公司 | Method for preparing unleaded brass tap |
| WO2019223077A1 (en) * | 2018-05-21 | 2019-11-28 | 海安县鹰球粉末冶金有限公司 | Method for manufacturing oil-retaining bearing applied to automobile lamp motor |
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