JPH0259853B2 - - Google Patents
Info
- Publication number
- JPH0259853B2 JPH0259853B2 JP58056128A JP5612883A JPH0259853B2 JP H0259853 B2 JPH0259853 B2 JP H0259853B2 JP 58056128 A JP58056128 A JP 58056128A JP 5612883 A JP5612883 A JP 5612883A JP H0259853 B2 JPH0259853 B2 JP H0259853B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- brush
- contact
- sliding contact
- resistance
- 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 6
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000005266 casting Methods 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
- 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、
Pd30〜50重量％、Ag20〜40重量％、Cu20〜40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、Pd、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
Pd30〜50重量％、Ag20〜40重量％、Cu20〜40重
量％のPd−Ag−Cuが92〜98.9重量％及び残部が
Sb1.0〜5.0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Pd30〜50重量％、Ag20〜40重量％、Cu20〜40
重量％のPd−Ag−Cuが92〜98.9重量％及び残部
がSb1.0〜5.0重量％、Si、Bi及びGeの少なくとも
一種を合計で0.1〜３重量％としている理由は、
Sb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
SbとSi、Bi及びGeのうちの少なくとも一種との
複合添加による相乗効果と相俟つて硬くする為
で、Sb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
はその効果を十分発揮できず、Sb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重量％を超えると酸化物の発生
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、Pd、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Sb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,
An alloy material consisting of 30-50% by weight of Pd, 20-40% by weight of Ag, and 20-40% by weight of Cu was 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 with limited elements and contents such as Pd, 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
Pd-Ag-Cu is 92-98.9% by weight and the balance is 30-50% by weight of Pd, 20-40% by weight of Ag, 20-40% by weight of Cu.
It consists of 1.0 to 5.0% by weight of Sb and a total of 0.1 to 3% 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 30 to 50% by weight of Pd, 20 to 40% by weight of Ag, and 20 to 40% by weight of Cu.
The reason why Pd-Ag-Cu is 92 to 98.9% by weight, the balance is Sb 1.0 to 5.0% by weight, and at least one of Si, Bi, and Ge is 0.1 to 3% by weight in total.
Sb improves molten metal flow during casting, and Si and Bi
This is because at least one of Ge and Ge is used to refine crystal grains. Here, Si, Bi, and Ge do not reduce the effects of each other, and therefore, 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,
This is to increase the hardness by combining Sb with at least one of Si, Bi, and Ge in combination to make it hard.
If the total amount of at least one of these is less than 0.1% by weight, the effect cannot be fully exhibited, and if the amount of Sb exceeds 5% by weight or the total amount of at least one of Si, Bi, and Ge exceeds 3% by weight, the oxide The amount of contact increases, the contact resistance increases, and it becomes unstable. In addition, by setting the contents of Pd, 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 will be exhibited without being impaired. be. Next, a conventional alloy material is used as a base material, and Sb and Sb are added to this.
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 disc-shaped commutator, the commutator was rotated forward and backward, and a sliding test was conducted 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: 130-120m/min Contact force: 100g Test time: 7 hours
【表】
上記の表で明らかなように実施例１〜12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、接触抵抗が低く安定していることが判る。
これはひとえに実施例１〜12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、SbとSi、Bi及び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よりも低く安定し
た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, the brush contacts of Examples 1 to 12 have significantly less wear than the conventional brush contacts, and it can be seen that the contact resistance is low and stable.
This is simply because the brush sliding contact material of the present invention, which constitutes the brush wire of the brush contacts of Examples 1 to 12, is hardened by Sb 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 lower and more stable contact resistance than when using conventional brush contact materials.
Claims (1)
％、Cu20〜40重量％のPd−Ag−Cuが92〜98.9重
量％及び残部がSb1.0〜5.0重量％、Si、Bi及びGe
の少なくとも一種を合計で0.1〜３重量％である
ことを特徴とする刷子用摺動接点材料。1. Pd-Ag-Cu is 92-98.9% by weight with a composition ratio of 30-50% by weight of Pd, 20-40% by weight of Ag, and 20-40% by weight of Cu, and the balance is 1.0-5.0% by weight of Sb, Si, Bi, and Ge.
A sliding contact material for a brush, characterized in that the total amount of at least one of the following is 0.1 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056128A JPS59182930A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056128A JPS59182930A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59182930A JPS59182930A (en) | 1984-10-17 |
| JPH0259853B2 true JPH0259853B2 (en) | 1990-12-13 |
Family
ID=13018433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58056128A Granted JPS59182930A (en) | 1983-03-31 | 1983-03-31 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59182930A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2479655C1 (en) * | 2011-11-10 | 2013-04-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Alloy based on palladium assay 500 |
-
1983
- 1983-03-31 JP JP58056128A patent/JPS59182930A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59182930A (en) | 1984-10-17 |