JPS6029436A

JPS6029436A - Sliding contact material

Info

Publication number: JPS6029436A
Application number: JP58138536A
Authority: JP
Inventors: Susumu Fujishima; 藤島　進
Original assignee: Tanaka Kikinzoku Kogyo KK
Current assignee: Tanaka Kikinzoku Kogyo KK
Priority date: 1983-07-28
Filing date: 1983-07-28
Publication date: 1985-02-14
Also published as: JPH0328496B2

Abstract

PURPOSE:To obtain a sliding contact material with improved wear resistance by adding specified amounts of Zn and Si, Zr, Bi, Ge and Ga to an alloy material prepd. by blending specified percentages of Pd and Ag. CONSTITUTION:A sliding contact material for a brush contact is obtd. by adding 1-10wt% Zn and 0.1-3wt% at least one among Si, Zr, Bi, Ge and Ga to an alloy material consisting of 30-70wt% Pd and 30-70wt% Ag without changing the ratio in the composition. The wear resistance can be improved furthermore by substituting 0.01-0.5wt% Fe group metal for part of the Zn. The sliding contact material produces little dust owing to wear, hardly generates noise, and has contact resistance comparable to that of a conventional sliding contact material.

Description

【発明の詳細な説明】本発明は、摺動接点材料の改良に関する。[Detailed description of the invention] The present invention relates to improvements in sliding contact materials.

従来、摺動接点材料としては各種材料が用いられ、とり
わけ刷子接点用の材料としては、Ｐｄ３０〜７０重量％
、Ａｇ３０〜７０重量％より成る合金材料が広く用いら
れていた。Conventionally, various materials have been used as sliding contact materials, and in particular, Pd 30 to 70% by weight is used as a material for brush contacts.
, alloy materials consisting of 30 to 70% by weight of Ag were widely used.

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
ズ発生の原因となっていた。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.

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摺動接点材料を提供
せんとするものである。The present invention has been made to eliminate such drawbacks, and provides a sliding contact material with improved wear resistance by using the above-mentioned alloy material as a base material and adding a small amount of a specific material thereto. That is.

本発明の摺動接点材料は、Ｐ　ｄ　３０〜７０重量％。The sliding contact material of the present invention has a Pd of 30 to 70% by weight.

Ａ　ｇ　３０〜７０重量％より成る合金材料にその組成
比に変更を加えずに、Ｚｎを１〜１０重量％とＳｉ。An alloy material consisting of 30 to 70% by weight of Ag is mixed with 1 to 10% by weight of Zn and Si without changing the composition ratio.

Ｚｒ、Ｂｉ、Ｇｅ、Ｇａの少なくとも一種を０．１〜３
重量％添加して成るものである。0.1 to 3 of at least one of Zr, Bi, Ge, and Ga
It is made by adding % by weight.

本発明の摺動接点材料に於いて、Ｐ　ｄ　３０〜７０重
量％、Ａｇ３０〜７０重量％より成る合金材料に、その
組成比に変更を加えずに、Ｚｎを１〜１０重量％とＳｉ
、Ｚｒ、Ｂｉ、Ｇｅ、Ｇａの少なくとも一種を０．１〜
３重量％添加している理由は、前記合金材料の耐摩耗性
を向上すべく硬くする為で、Ｚｎが１重量％あるいはＳ
ｉ、Ｚｒ、Ｂｉ、Ｇｅ、Ｇａの少なくとも一種が０．１
重量％未満ではその効果を発揮できず、Ｚｎが１０重量
％あるいはＳｉ、Ｚｒ。In the sliding contact material of the present invention, 1 to 10% by weight of Zn and 1 to 10% by weight of Si are added to an alloy material consisting of 30 to 70% by weight of Pd and 30 to 70% by weight of Ag without changing the composition ratio.
, at least one of Zr, Bi, Ge, and Ga from 0.1 to
The reason why 3% by weight of Zn is added is to make the alloy material harder and improve its wear resistance.
At least one of i, Zr, Bi, Ge, and Ga is 0.1
If the amount is less than 10% by weight, the effect cannot be exhibited, and if Zn is less than 10% by weight, Si or Zr.

Ｂｉ、Ｇｅ、Ｇａの少なくとも一種が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。If at least one of Bi, Ge, and Ga exceeds 3% by weight, the amount of oxides generated will increase, contact resistance will increase, and furthermore, it will become unstable.

また、前記Ｚｎの１部が０．０１〜０．５重量％の範囲
でｐｅ族金属に置き換わっている理由は、結晶粒を微細
化し、更に一段と耐摩耗性を向上させ゛る為で０．０１
重量％未満では結晶粒微細化の効果が現われず、０．５
重量％を超えてもそれ以上の効果が得られないからであ
る。Moreover, the reason why a part of the Zn is replaced with PE group metal in the range of 0.01 to 0.5% by weight is to refine the crystal grains and further improve wear resistance. 01
If it is less than 0.5% by weight, the effect of grain refinement will not appear.
This is because even if it exceeds the weight percentage, no further effect can be obtained.

次に下記の左欄に示す成分組成の本発明による摺動接点
材料と従来の摺動接点材料を用いて夫々線径０．１ｘ＊
の刷子線材を作り、これを各々長さ８顛に切断し、２本
並列させて一端を幅１抛量、長さ１３龍、厚さ０．２ｆ
ｉの合材に溶接し、他端に２Ｒの円弧状の接触部を曲成
して刷子接点を作った。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。Next, using the sliding contact material according to the present invention and the conventional sliding contact material having the compositions shown in the left column below, each wire diameter was 0.1x*.
Make a brush wire rod, cut each into 8 lengths, put two of them in parallel, and one end has a width of 1 mm, a length of 13 mm, and a thickness of 0.2 f.
A brush contact was made by welding to the composite material of i and bending 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.

試験条件電　流　：　０．６Ａ電　圧　：　１２Ｖ負　荷　：　抵抗負荷回転速度　：　１０００ｒ　ｐ　ｍ周　速　：　１３（１−１２０ｍ　／　ｍｉｎ接触カニ
　１００ｇ試験時間　：　７時間（以下余白）上記の表で明らかなように実施例１〜６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
が同等に低く安定していることが判る。これはひとえに
実施例１〜６の刷子接点の刷子線材を構成している本発
明の摺動接点材料が、Ｚｎと３ｉ、Ｚｒ、Ｂｉ、Ｇｅ、
Ｇａの少なくとも一種を添加することによって硬くなり
、耐摩耗性が向上するからに他ならない。特に実施例６
の刷子接点が実施例１〜５の刷子接点に比べ摩耗量がさ
らに一段と少ないのは、刷子線材を構成している本発明
の摺動接点材料にＦｅ族金属が添加されて、結晶粒が微
細化されていて、耐摩耗性が一段と向上しているからに
他ならない。Test conditions Current: 0.6A Voltage: 12V Load: Resistance load Rotation speed: 1000rpm Circumferential speed: 13 (1-120m/min contact crab 100g Test time: 7 hours (blank below) As shown in the table above As can be seen, the brush contacts of Examples 1 to 6 have significantly less wear than the conventional brush contacts, and the contact resistance is equally low and stable.This is because the brush contacts of Examples 1 to 6 The sliding contact material of the present invention constituting the brush wire of the contact includes Zn, 3i, Zr, Bi, Ge,
This is because the addition of at least one type of Ga increases hardness and improves wear resistance. Especially Example 6
The reason why the amount of wear of the brush contacts of Embodiments 1 to 5 is even smaller than that of the brush contacts of Examples 1 to 5 is that the Fe group metal is added to the sliding contact material of the present invention, which constitutes the brush wire, and the crystal grains are fine. This is due to the fact that it has been further improved in wear resistance.

以上詳記した通り本発明による摺動接点材料によれば、
従来の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て、ノイズの発生が殆んど無
く、また従来の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。As detailed above, according to the sliding contact material according to the present invention,
It has significantly superior wear resistance compared to conventional sliding contact materials, generates extremely little abrasion powder, generates almost no noise, and has contact resistance equivalent to that of conventional sliding contact materials. This has the effect of providing a brush contact point.

出願人　田中貴金属工業株式会社Applicant Tanaka Kikinzoku Kogyo Co., Ltd.

Claims

【特許請求の範囲】１）Ｐｄ３０〜７０重量％、Ａｇ３０〜７０重量％より
成る合金材料に、その組成比に変更を加えずにＺｎを１
〜１０重量％とＳｔ、Ｚ’ｒ、Ｂｉ、Ｇｅ、Ｇａの少な
くとも一種を０．１〜３重量％添加して成る摺動接点材
料。２）前記Ｚｎの１部が０．０１〜０．５重量％の範囲で
Ｆｅ族金属に置き換わっている特許請求の範囲第１項記
載の摺動接点材料。[Claims] 1) Zn is added to an alloy material consisting of 30 to 70% by weight of Pd and 30 to 70% by weight of Ag without changing the composition ratio.
-10% by weight and 0.1-3% by weight of at least one of St, Z'r, Bi, Ge, and Ga is added. 2) The sliding contact material according to claim 1, wherein a part of the Zn is replaced by Fe group metal in a range of 0.01 to 0.5% by weight.