JPH06279909A - Slider material made of w-based sintered alloy for current collector of high-speed electric vehicle - Google Patents

Abstract

PURPOSE:To provide a slider material made of a W-based sintered alloy, hardly damaging a trolley wire as an opposite material when used in the current collector of a high-speed electric vehicle and having excellent wear resistance. CONSTITUTION:This slider material for the current collector of a high-speed electric vehicle is made of a W-based sintered alloy having a compsn. consisting of 0.5-20wt.% one or more kinds of iron family metals, 0.5-10wt.% Cu and the balance W with inevitable impurities. This slider material has much more excellent wear resistance.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、特に高速で走行する
電気車の例えばパンタグラフなどの集電装置に用いた場
合にすぐれた耐摩耗性を示すＷ基焼結合金製すり板材に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a W-based sintered alloy siding plate material having excellent wear resistance when used in a current collector such as a pantograph of an electric vehicle running at a high speed. .

【０００２】[0002]

【従来の技術】従来より今日に至るまで長期に亘って、
電気車の集電装置用すり板材として、各種のＦｅ基焼結
合金製のものが主流を占めていることは良く知られると
ころである。2. Description of the Related Art For a long time until now,
It is well known that various types of Fe-based sintered alloys are predominantly used as the scraping plate material for the current collector of the electric car.

【０００３】[0003]

【発明が解決しようとする課題】一方、近年、電気車は
増々高速化の傾向にあり、今や時速：２７０kmでの営業
運転は現実のものとなり、時速：３００km以上の超高速
での営業運転も計画されているが、上記の従来Ｆｅ基焼
結合金製すり板材においては、これらの超高速走行に用
いた場合、いずれも摩耗進行が著しく速いのが現状であ
る。On the other hand, in recent years, electric vehicles have tended to become faster and faster, and now commercial operation at an hourly speed of 270 km has become a reality, and even commercial operation at an ultra-high speed of 300 kmh or more has become possible. Although it is planned, in the above conventional Fe-based sintered alloy siding plate material, when used for ultra-high speed running, the present situation is that wear progresses extremely rapidly.

【０００４】[0004]

【課題を解決するための手段】そこで、本発明者等は、
上述のような観点から、電気車の超高速走行にもすぐれ
た耐摩耗性を発揮する集電装置用すり板材を開発すべく
研究を行なった結果、集電装置用すり板材を、重量％で
（以下、％は重量％を示す）、Ｃｏ，Ｎｉ、およびＦｅ
（以下、これらを総称して鉄族金属という）のうちの１
種または２種以上：０．５〜２０％、Ｃｕ：０．５〜１
０％、を含有し、残りがＷと不可避不純物からなる組成
を有するＷ基焼結合金で構成すると、この結果のＷ基焼
結合金製すり板材は、これを構成するＷ基焼結合金の主
成分であるＷによってすぐれた耐熱性、耐酸化性、およ
び耐アーク性、さらに自己潤滑性が確保され、かつ結合
相を形成するＣｏ，Ｎｉ、およびＦｅのうちの１種以上
とＣｕによって強度が確保されることから、通常の高速
走行は勿論のこと、時速：２５０km以上の超高速走行に
おいても、すぐれた耐摩耗性を発揮するという研究結果
を得たのである。Therefore, the present inventors have
From the above viewpoints, as a result of research to develop a current collector siding plate material that exhibits excellent wear resistance even at ultra-high speed running of an electric vehicle, as a result, (Hereinafter,% means% by weight), Co, Ni, and Fe
1 out of (hereinafter collectively referred to as iron group metals)
Type or two or more types: 0.5 to 20%, Cu: 0.5 to 1
When a W-based sintered alloy having the composition of 0% and the balance of W and unavoidable impurities is used, the resulting W-based sintered alloy strip plate material has the same composition as the W-based sintered alloy. Excellent heat resistance, oxidation resistance, arc resistance, and self-lubricating property are secured by the main component W, and strength is obtained by Cu and at least one of Co, Ni, and Fe forming a binder phase. Therefore, the research results show that excellent wear resistance is exhibited not only in normal high speed running but also in ultra high speed running of 250 km / h or more.

【０００５】この発明は、上記の研究結果にもとづいて
なされたものであって、鉄族金属のうちの１種または２
種以上：０．５〜２０％、Ｃｕ：０．５〜１０％、を含
有し、残りがＷと不可避不純物からなる組成を有するＷ
基焼結合金で構成してなる高速電気車の集電装置用すり
板材に特徴を有するものである。The present invention has been made based on the above research results, and is one of the iron group metals or two of them.
W containing at least one kind: 0.5 to 20%, Cu: 0.5 to 10%, and the balance being W and inevitable impurities.
It is characterized by a contact plate material for a current collector of a high-speed electric vehicle, which is made of a base sintered alloy.

【０００６】なお、この発明の集電装置用すり板材にお
いて、これを構成するＷ基焼結合金の鉄族金属およびＣ
ｕの含有量を、それぞれ鉄族金属：０．５〜２０％およ
びＣｕ：０．５〜１０％と限定したのは、これらの成分
には、相互に固溶して結合相を形成し、すり板材の強度
を向上させる作用があるが、その含有量が鉄族金属：
０．５％未満およびＣｕ：０．５％未満ではすり板材に
所望の高強度を確保することができず、一方その含有量
が鉄族金属：２０％およびＣｕ：１０％を越えると、相
対的にＷ含有量が低くなって、Ｗによってもたらされる
上記の特性が損なわれるようになるという理由にもとづ
くものである。In the contact strip material for a current collector of the present invention, the iron group metal and C of the W-based sintered alloy constituting the same.
The contents of u are limited to iron group metal: 0.5 to 20% and Cu: 0.5 to 10%, respectively, because these components form a solid phase with each other to form a binder phase, It has the effect of improving the strength of the ground sheet, but its content is an iron group metal:
If the content is less than 0.5% and Cu: less than 0.5%, the desired high strength cannot be ensured in the ground sheet material. On the other hand, if the content exceeds 20% of iron group metal and 10% of Cu, the relative strength is increased. The reason for this is that the W content is lowered so that the above properties brought about by W are impaired.

【０００７】[0007]

【実施例】つぎに、この発明の集電装置用すり板材を実
施例により具体的に説明する。原料粉末として、いずれ
も−１００メッシュ以下の粒度を有するＷ粉末、Ｃｏ粉
末、Ｎｉ粉末、鉄粉、およびＣｕ粉末を用意し、これら
原料粉末を表１に示される配合組成に配合し、Ｖ型ミキ
サにて２時間混合した後、２ton ／cm² の圧力で圧粉体
にプレス成形し、この圧粉体を水素雰囲気中、１３００
〜１４６０℃の温度に２時間保持の条件で焼結すること
により実質的に配合組成と同じ成分組成を有するＷ基焼
結合金で構成され、かついずれも幅：２５mm×長さ：８
０mm×厚さ：１０mmの寸法をもった本発明Ｗ基焼結合金
製すり板材１〜１１をそれぞれ製造した。EXAMPLES Next, the contact plate material for a current collector of the present invention will be specifically described by way of examples. W powders, Co powders, Ni powders, iron powders, and Cu powders each having a particle size of -100 mesh or less were prepared as raw material powders, and these raw material powders were blended to the blending composition shown in Table 1 to form a V-shaped powder. After mixing in a mixer for 2 hours, the green compact is press-molded at a pressure of ² ton / cm ² , and the green compact is subjected to 1300 in a hydrogen atmosphere.
It is composed of a W-based sintered alloy having substantially the same composition as the compounding composition by sintering at a temperature of ˜1460 ° C. for 2 hours, and each has a width of 25 mm and a length of 8
Each of the W-based sintered alloy friction plates 1 to 11 of the present invention having dimensions of 0 mm × thickness: 10 mm was manufactured.

【０００８】また、比較の目的で、原料粉末として、い
ずれも−１００メッシュ以下の粒度を有するＦｅ−Ｍｏ
合金（Ｍｏ：６０％含有）粉末、Ｎｉ粉末、Ｃｕ粉末、
および鉄粉、さらにカーボンブラックを用い、これら原
料粉末を、Ｆｅ−Ｍｏ合金：６％、Ｎｉ：１％、Ｃｕ：
１％、Ｃ：０．１％、Ｆｅ：残りからなる配合組成に配
合し、Ｖ型ミキサで２時間混合した後、６ton ／cm² の
圧力で圧粉体にプレス成形し、この圧粉体をアンモニア
分解ガス雰囲気中、１１３０℃に１時間保持の条件で焼
結することにより実質的に配合組成と同じ成分組成、並
びにＦｅ基合金素地に硬質Ｆｅ−Ｍｏ合金粒子が均一に
分散分布した組織を有するＦｅ基焼結合金で構成され、
かつ幅：２５mm×長さ：８０mm×厚さ：１０mmの同じ寸
法をもった従来Ｆｅ基焼結合金製すり板材を製造した。
なお、上記従来Ｆｅ基焼結合金製すり板材は、電気車の
パンタグラフすり板材として現在広く実用に供されてい
るすり板材のうちの代表的なものである。For the purpose of comparison, Fe-Mo having a particle size of -100 mesh or less is used as a raw material powder.
Alloy (Mo: 60% content) powder, Ni powder, Cu powder,
Fe powder, iron powder, and carbon black were used.
1%, C: 0.1%, Fe: The balance is mixed, and the mixture is mixed for 2 hours in a V-type mixer, and then pressed into a green compact at a pressure of 6 ton / cm ^2. Is sintered in an ammonia decomposition gas atmosphere at 1130 ° C. for 1 hour, and the composition is substantially the same as the compounding composition, and a structure in which hard Fe—Mo alloy particles are uniformly dispersed and distributed in the Fe-based alloy substrate. Composed of a Fe-based sintered alloy having
Moreover, a conventional Fe-based sintered alloy strip material having the same dimensions of width: 25 mm x length: 80 mm x thickness: 10 mm was produced.
Note that the conventional Fe-based sintered alloy siding plate material is a typical one of the shaving plate materials that are currently widely used as a pantograph sliding plate material for electric vehicles.

【０００９】[0009]

【表１】 [Table 1]

【００１０】ついで、これらの各種すり板材について加
速摩耗試験を行なった。加速摩耗試験は、モータの水平
回転軸に中心を固定することにより直立支持された外
径：２．２ｍの円板の片側面に、模擬トロリ線として外
径：２ｍ×高さ：１５mm×幅：５mmの硬銅リング（ＪＩ
Ｓ・Ｃ１１００・ＢＢ−Ｈ）を５０mm偏心して取り付け
た装置を用い、上記硬銅リングに、直径線上の両側です
り板材を５kgの押付力で、長さ：８０mm×幅：２５mmの
寸法面を面接触させ、上記模擬トロリ線とすり板材間に
２００Ａの電流を流しながら、上記円板の回転を５分で
２７０km／hrの回転速度に上げ、この速度に５分間保持
した後、５分かけて停止を１サイクルとし、これを４回
繰り返すことにより行ない、すり板材の比摩耗量および
相手材である模擬トロリ線の摩耗深さを測定した。これ
らの測定結果を、模擬トロリ線：５０００回転当りの値
に換算し、かつ２本のすり板材の平均値として表１に合
せて示した。Then, an accelerated wear test was carried out on each of these various contact plate materials. In the accelerated wear test, the center is fixed to the horizontal rotation shaft of the motor, and it is supported upright on one side of a disc with an outer diameter of 2.2 m. As a simulated trolley wire, the outer diameter is 2 m, the height is 15 mm, and the width is 15 mm. : 5mm hard copper ring (JI
S ・ C1100 ・ BB-H) with 50 mm eccentricity attached, using the above-mentioned hard copper ring on both sides of the diameter line with a pressing force of 5 kg, the length: 80 mm × width: 25 mm While making a surface contact and applying a current of 200 A between the simulated trolley wire and the ground plate material, the rotation speed of the disk was increased to a rotation speed of 270 km / hr in 5 minutes, and this speed was maintained for 5 minutes, followed by 5 minutes. Stopping was set as one cycle, and this was repeated four times to measure the specific wear amount of the contact plate material and the wear depth of the simulated trolley wire as the mating material. These measurement results were converted into values for simulated trolley wire: 5000 revolutions, and are also shown in Table 1 as the average value of the two ground plate materials.

【００１１】[0011]

【発明の効果】表１に示される結果から、本発明Ｗ基焼
結合金製すり板材１〜１１は、いずれも超高速走行で従
来Ｆｅ基焼結合金製すり板材と同等あるいはこれより低
い相手攻撃性で、これより一段とすぐれた耐摩耗性を示
すことが明らかである。上述のように、この発明の集電
装置用Ｗ基焼結合金製すり板材は、通常走行は勿論のこ
と、特に時速：２５０km以上の超高速走行の電気車に用
いた場合にもすぐれた耐摩耗性を発揮し、十分満足に対
応できるものである。From the results shown in Table 1, all of the W-based sintered alloy strips 1 to 11 of the present invention are equivalent to or lower than the conventional Fe-based sintered alloy strips at ultrahigh speed running. It is clear that it is more aggressive and exhibits better wear resistance than this. As described above, the W-based sintered alloy siding plate material for a current collector of the present invention has excellent durability when used not only in normal running but also in an electric vehicle running at an ultrahigh speed of 250 km / h or more. It exhibits abrasion resistance and can be sufficiently satisfied.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 重量％で、 Ｃｏ，Ｎｉ、およびＦｅのうちの１種または２種以上：
０．５〜２０％、 Ｃｕ：０．５〜１０％、を含有し、残りがＷと不可避不
純物からなる組成を有するＷ基焼結合金で構成したこと
を特徴とする高速電気車の集電装置用Ｗ基焼結合金製す
り板材。1. One or more of Co, Ni, and Fe in wt%:
0.5 to 20%, Cu: 0.5 to 10%, the rest being composed of a W-based sintered alloy having a composition of W and unavoidable impurities, and a current collector for a high-speed electric vehicle. W-based sintered alloy sliding plate material for equipment.