JPH0252702B2 - - Google Patents
Info
- Publication number
- JPH0252702B2 JPH0252702B2 JP58023925A JP2392583A JPH0252702B2 JP H0252702 B2 JPH0252702 B2 JP H0252702B2 JP 58023925 A JP58023925 A JP 58023925A JP 2392583 A JP2392583 A JP 2392583A JP H0252702 B2 JPH0252702 B2 JP H0252702B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- contact
- brush
- 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
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910002482 Cu–Ni Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 19
- 239000000956 alloy Substances 0.000 description 9
- 229910052697 platinum Inorganic materials 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 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、
Au69〜71重量％、Pt4〜６重量％、Ag9〜11重量
％、Cu13〜15重量％、Ni0.5〜1.5重量％より成る
合金材料が広く用いられていた（昭和40年７月８
日に工業日日新聞社から発行された日本電子材料
技術協会編の新しい接点材料第30頁参照）。
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、各元素の複合
添加による相乗効果と相俟つて、特にAu、Ptに
よる耐蝕性、Ag、Pt、Cuによるばね性、Cu、
Ni、Pt、Auなどによる機械的強度、その他、鋳
造性、加工性の点に着目されて、Au、Pt、Ag、
Cu、Ni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、接触抵抗が不安定でノイズ発生の原
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
Au69〜71重量％、Pt4〜６重量％、Ag9〜11重量
％、Cu13〜15重量％、Ni0.5〜1.5重量％のAu―
Pt―Ag―Cu―Niが92〜98.5重量％及び残部が
Sn1.0〜5.0重量％、Te、Sr及びZrの少なくとも
一種を合計で0.5〜3.0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Au69〜71重量％、Pt4〜６重量％、Ag9〜11重
量％、Cu13〜15重量％、Ni0.5〜1.5重量％のAu
―Pt―Ag―Cu―Niが92〜98.5重量％及び残部が
Sn1.0〜5.0重量％、Te、Sr及びZrの少なくとも
一種を合計で0.5〜3.0重量％としている理由は、
前記従来の合金材料の耐摩耗性を向上すべくSn
とTe、Sr、Zrとの金属間化合物を分散して硬く
する為で、Snが１重量％未満あるいは、Te、Sr
及びZrのうち少なくとも一種を合計で0.5重量％
未満ではその効果を発揮できず、Snが５重量％
を超えるかあるいはTe、Sr及びZr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、Au、Pt、Ag、
Cu、Ni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Snと
Te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,
Alloy materials consisting of 69-71% by weight of Au, 4-6% by weight of Pt, 9-11% by weight of Ag, 13-15% by weight of Cu, and 0.5-1.5% by weight of Ni were widely used (July 8, 1966).
(See page 30 of New Contact Materials, edited by Japan Electronic Materials Technology Association, published by Kogyo Nichi Nichi Shimbun, Inc.). This alloy material has particularly excellent properties such as mechanical strength, corrosion resistance, and spring properties, and together with the synergistic effect of compound addition of each element, it has particularly good corrosion resistance due to Au and Pt, Ag, Pt, and Cu. Spring properties due to Cu,
Focusing on the mechanical strength, castability, and processability of Ni, Pt, and Au, Au, Pt, Ag,
It is made by limiting elements such as Cu and Ni and their content. However, brush contacts made of this alloy material have poor abrasion resistance when sliding with the commutator, tend to generate abrasion powder, and have unstable contact resistance, causing noise generation. 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
Au69~71wt%, Pt4~6wt%, Ag9~11wt%, Cu13~15wt%, Ni0.5~1.5wt% Au—
Pt-Ag-Cu-Ni is 92-98.5% by weight and the balance is
It consists of 1.0 to 5.0% by weight of Sn and a total of 0.5 to 3.0% by weight of at least one of Te, Sr, and Zr. In the sliding contact material for brushes of the present invention, the composition ratio of Au is 69 to 71% by weight, Pt is 4 to 6% by weight, Ag is 9 to 11% by weight, Cu is 13 to 15% by weight, and Ni is 0.5 to 1.5% by weight.
-Pt-Ag-Cu-Ni is 92 to 98.5% by weight and the balance is
The reason why the total content of Sn is 1.0 to 5.0% by weight and at least one of Te, Sr, and Zr is 0.5 to 3.0% by weight.
In order to improve the wear resistance of the conventional alloy materials, Sn
This is to disperse and harden intermetallic compounds of Te, Sr, and Zr, and Sn is less than 1% by weight or Te, Sr
A total of 0.5% by weight of at least one of Zr and
If the Sn content is less than 5% by weight, the effect cannot be achieved.
If the total amount of at least one of Te, Sr, and Zr exceeds 3% by weight, the amount of oxides generated increases, contact resistance becomes high, and furthermore, it becomes unstable. Also, Au, Pt, Ag,
By setting the content of Cu and Ni 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. Next, we used a conventional alloy material as a base material, and added Sn and
A sliding contact material for a brush having the composition shown in Example 1 in the table was prepared by adding Te, 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. Each wire diameter is 0.7mm using the material
Brush wire rods were made, each cut into 8 mm lengths, two wires were placed in parallel, one end was welded to a base material with a width of 10 mm, a length of 13 mm, and a thickness of 0.2 mm, and a 2R arc-shaped contact was made at the other end. I made a brush contact by bending the part. 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: 130-120m/min Contact force: 100g Test time: 7 hours
【表】
上記の表で明らかなように実施例１〜10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１〜10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、SnとTe、Ti、Sr、Zrとの金属間化合物の分
散によつて硬くなり、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, it can be seen that the brush contacts of Examples 1 to 10 had significantly less wear than the conventional brush contacts, and the contact resistance was 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 10, is hard due to the dispersion of intermetallic compounds of Sn, Te, Ti, Sr, and Zr. This is because the wear resistance is improved. 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 sliding contact materials.
Claims (1)
Ag9〜11重量％、Cu13〜15重量％、Ni0.5〜1.5重
量％のAu―Pt―Ag―Cu―Niが92〜98.5重量％
及び残部がSn1.0〜5.0重量％、Te、Sr及びZrの
少なくとも一種を合計で0.5〜3.0重量％であるこ
とを特徴とする刷子用摺動接点材料。1 Composition ratio: Au69-71% by weight, Pt4-6% by weight,
92-98.5 wt% Au-Pt-Ag-Cu-Ni with 9-11 wt% Ag, 13-15 wt% Cu, 0.5-1.5 wt% Ni
and the balance being 1.0 to 5.0% by weight of Sn and a total of 0.5 to 3.0% by weight of at least one of Te, Sr, and Zr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023925A JPS59150037A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58023925A JPS59150037A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59150037A JPS59150037A (en) | 1984-08-28 |
| JPH0252702B2 true JPH0252702B2 (en) | 1990-11-14 |
Family
ID=12124098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58023925A Granted JPS59150037A (en) | 1983-02-16 | 1983-02-16 | Sliding contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150037A (en) |
-
1983
- 1983-02-16 JP JP58023925A patent/JPS59150037A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59150037A (en) | 1984-08-28 |