JPH0259230B2 - - Google Patents
Info
- Publication number
- JPH0259230B2 JPH0259230B2 JP58052870A JP5287083A JPH0259230B2 JP H0259230 B2 JPH0259230 B2 JP H0259230B2 JP 58052870 A JP58052870 A JP 58052870A JP 5287083 A JP5287083 A JP 5287083A JP H0259230 B2 JPH0259230 B2 JP H0259230B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- contact
- sliding contact
- brushes
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 7
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 9
- 229910052748 manganese Inorganic materials 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/023—Composite material having a noble metal as the basic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Contacts (AREA)
- Conductive Materials (AREA)
Description
本発明は、刷子用摺動接点材料の改良に関す
る。
従来、摺動接点材料としては各種材料が用いら
れ、とりわけ刷子用摺動接点材料としては、
Au61.5〜63.5重量％、Ag28〜30重量％、Cu7.5〜
9.5重量％より成る合金材料が広く用いられてい
た。
この合金材料は、とりわけ機械的強度、耐蝕
性、ばね性等の優れた特性を有し、その点に着目
されて、Au，Ag，Cuなどの元素及び含有量を限
定されて成るものである。
然し乍ら、この合金材料で製作した刷子接点で
は、整流子との摺動時の耐摩耗性が劣り、摩耗粉
が生じ易く、ノイズ発生の原因となつていた。
本発明は、斯かる欠点を解消すべくなされたも
のであり、前記合金材料を基材としてこれに特定
の材料を僅かに添加させて、耐摩耗性を向上させ
た刷子用摺動接点材料を提供せんとするものであ
る。
本発明の刷子用摺動接点材料は、組成比で
Au61.5〜63.5重量％、Ag28〜30重量％、Cu7.5〜
9.5重量％のAu−Ag−Cuが92〜98.9重量％及び
残部がMn1.0〜5.0重量％、Si，Bi及びGeの少な
くとも一種を合計で0.1〜3.0重量％から成るもの
である。
本発明の刷子用摺動接点材料に於いて、組成比
でAu61.5〜63.5重量％、Ag28〜30重量％、Cu7.5
〜9.5重量％のAu−Ag−Cuが92〜98.9重量％及
び残部がMn1.0〜5.0重量％、Si，Bi及びGeの少
なくとも一種を合計で0.1〜3.0重量％としている
理由は、Mnにより鋳造時の湯流れを改善し、ま
た、Si，Bi及びGeの少なくとも一種により結晶
粒の微細化をはかる為である。ここで、Si，Bi
及びGeはお互いその効果を減殺し合うものでは
なく、従つて単独でも、或いは２種以上とするこ
ともできる。更に前記従来の合金材料の耐摩耗性
を向上すべくMnとSi，Bi及びGeのうち少なくと
も１種との複合添加による相乗効果を相俟つて硬
くする為で、Mnが１重量％未満あるいはSi，Bi
及びGeのうち少なくとも一種を合計で0.1重量％
未満ではその効果を発揮できず、Mnが５重量％
を超えるかあるいはSi，Bi及びGeのうち少なく
とも一種を合計で3.0重量％を超えると酸化物に
発生量が多くなり、接触抵抗が高くなり、その上
不安定となるものである。また、Au，Ag，Cuの
含有量は、前記従来の合金材料の組成比に変更を
加えない範囲とすることにより、従来の合金材料
の特性は損なわれることなく発揮されることとな
るものである。
次に従来の合金材料を基材とし、これにMnと
Siを添加し、表の実施例１に示す成分組成の刷子
用摺動接点材料とし、以下同様にして表に示す成
分組成の本発明による刷子用摺動接点材料と従来
の刷子用摺動接点材料を用いて夫々線径0.7mmの
刷子線材を作り、これを各々長さ８mmに切断し、
２本並列させて一端を幅10mm、長さ13mm、厚さ
0.2mmの台材に溶接し、他端に2Rの円弧状の接触
部を曲成して刷子接点を作つた。そして夫々の刷
子接点を円盤状の整流子に接触させ、整流子を正
逆回転させて下記の試験条件にて摺動試験を行
い、摩耗量及び接触抵抗を測定した処、下記の表
の右欄に示すような結果を得た。
試験条件
電 流：直流0.6A
電 圧：12V
負 荷：抵抗負荷
回転速度：1000回転／分
周 速：130〜120ｍ／min
接触力：100ｇ
試験時間：７時間
The present invention relates to improvements in sliding contact materials for brushes. Conventionally, various materials have been used as sliding contact materials, and in particular, as sliding contact materials for brushes,
Au61.5~63.5wt%, Ag28~30wt%, Cu7.5~
Alloy materials consisting of 9.5% by weight were widely used. This alloy material has particularly excellent properties such as mechanical strength, corrosion resistance, and spring properties, and with this in mind, it is made by limiting the amount and content of elements such as Au, Ag, and Cu. . However, brush contacts made of this alloy material have poor abrasion resistance when sliding with the commutator, and are likely to generate abrasion powder, causing noise. The present invention has been made to eliminate such drawbacks, and provides a sliding contact material for brushes that uses the above-mentioned alloy material as a base material and has improved wear resistance by adding a small amount of a specific material to the alloy material. This is what we intend to provide. The sliding contact material for brushes of the present invention has a composition ratio of
Au61.5~63.5wt%, Ag28~30wt%, Cu7.5~
The composition consists of 9.5% by weight of Au-Ag-Cu, 92-98.9% by weight, the balance being 1.0-5.0% by weight of Mn, and a total of 0.1-3.0% by weight of at least one of Si, Bi, and Ge. In the sliding contact material for brushes of the present invention, the composition ratio is 61.5 to 63.5% by weight of Au, 28 to 30% by weight of Ag, and 7.5% by weight of Cu.
The reason why ~9.5% by weight of Au-Ag-Cu is 92-98.9% by weight, the balance is Mn 1.0-5.0% by weight, and at least one of Si, Bi and Ge is 0.1-3.0% by weight in total is due to Mn. This is to improve the flow of the metal during casting, and to refine the crystal grains by using at least one of Si, Bi, and Ge. Here, Si, Bi
and Ge do not reduce the effects of each other, so they can be used alone or in combination of two or more types. Furthermore, in order to improve the wear resistance of the conventional alloy materials, the synergistic effect of the composite addition of Mn and at least one of Si, Bi, and Ge is used to increase the hardness. , Bi
A total of 0.1% by weight of at least one of Ge and Ge.
If the Mn content is less than 5% by weight, the effect cannot be achieved.
If the total amount of at least one of Si, Bi, and Ge exceeds 3.0% by weight, a large amount of oxides will be generated, resulting in high contact resistance and instability. Furthermore, by setting the content of Au, Ag, and Cu within a range that does not change the composition ratio of the conventional alloy material, the characteristics of the conventional alloy material can be exhibited without being impaired. be. Next, a conventional alloy material is used as a base material, and Mn and Mn are added to it.
By adding Si, a sliding contact material for a brush having the composition shown in Example 1 of the table was prepared, and a sliding contact material for a brush according to the present invention having the composition shown in the table and a conventional sliding contact for a brush were prepared in the same manner. Brush wire rods with a wire diameter of 0.7 mm were made using the materials, and each was cut into lengths of 8 mm.
Two pieces are placed in parallel and one end is 10mm wide, 13mm long, and thick.
A brush contact was made by welding to a 0.2 mm base material and curving a 2R arc-shaped contact part at the other end. Then, each brush contact was brought into contact with a disk-shaped commutator, and the commutator was rotated in forward and reverse directions to perform a sliding test under the following test conditions, and the wear amount and contact resistance were measured. The results shown in the column were obtained. Test conditions Current: DC 0.6A Voltage: 12V Load: Resistance load Rotation speed: 1000 rotations/divided speed: 130 to 120m/min Contact force: 100g Test time: 7 hours
【表】
上記の表で明らかなように実施例１〜11の刷子
接点は従来例の刷子接点に比し摩耗量が著しく少
なく、接触抵抗が同時に低く安定していることが
判る。これはひとえに実施例１〜11の刷子接点の
刷子線材を構成している本発明の刷子用摺動接点
材料が、MnとSi，Bi，Geの少なくとも一種によ
つて硬くなり、耐摩耗性が向上されるからに他な
らない。
以上詳記した通り本発明による刷子用摺動接点
材料によれば、従来の刷子用摺動接点材料に比べ
著しく耐摩耗性に優れ、摩耗粉の発生量が極めて
少なく、ノイズの発生が殆んど無く、また従来の
刷子用摺動接点材料による場合と同等の接触抵抗
を有する刷子接点を得ることができるという効果
がある。[Table] As is clear from the above table, it can be seen that the brush contacts of Examples 1 to 11 have significantly less wear than the conventional brush contacts, and the contact resistance is also low and stable. This is because the sliding contact material for brushes of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 11, is hardened by Mn and at least one of Si, Bi, and Ge, and has excellent wear resistance. It's only because it improves. As detailed above, the sliding contact material for brushes according to the present invention has significantly superior wear resistance compared to conventional sliding contact materials for brushes, generates extremely little wear powder, and generates almost no noise. This has the advantage that it is possible to obtain a brush contact having a contact resistance equivalent to that of a conventional brush contact material.
Claims (1)
量％、Cu7.5〜9.5重量％のAu−Ag−Cuが92〜
98.9重量％及び残部がMn1.0〜5.0重量％、Si，Bi
及びGeの少なくとも一種を合計で0.1〜3.0重量％
であることを特徴とする刷子用摺動接点材料。1 Au-Ag-Cu with a composition ratio of 61.5 to 63.5% by weight, 28 to 30% by weight of Ag, and 7.5 to 9.5% by weight of Cu is 92 to 92% by weight.
98.9% by weight and the balance is Mn1.0~5.0% by weight, Si, Bi
and at least one type of Ge in a total of 0.1 to 3.0% by weight
A sliding contact material for a brush, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58052870A JPS59179738A (en) | 1983-03-29 | 1983-03-29 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58052870A JPS59179738A (en) | 1983-03-29 | 1983-03-29 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59179738A JPS59179738A (en) | 1984-10-12 |
| JPH0259230B2 true JPH0259230B2 (en) | 1990-12-11 |
Family
ID=12926907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58052870A Granted JPS59179738A (en) | 1983-03-29 | 1983-03-29 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179738A (en) |
-
1983
- 1983-03-29 JP JP58052870A patent/JPS59179738A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59179738A (en) | 1984-10-12 |