JPS631385B2 - - Google Patents

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Publication number
JPS631385B2
JPS631385B2 JP57107576A JP10757682A JPS631385B2 JP S631385 B2 JPS631385 B2 JP S631385B2 JP 57107576 A JP57107576 A JP 57107576A JP 10757682 A JP10757682 A JP 10757682A JP S631385 B2 JPS631385 B2 JP S631385B2
Authority
JP
Japan
Prior art keywords
copper
graphite
iron
sintered
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
Application number
JP57107576A
Other languages
Japanese (ja)
Other versions
JPS58224138A (en
Inventor
Iwao Azetsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TEIKOKU KAABON KOGYO KK
Original Assignee
TEIKOKU KAABON KOGYO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TEIKOKU KAABON KOGYO KK filed Critical TEIKOKU KAABON KOGYO KK
Priority to JP10757682A priority Critical patent/JPS58224138A/en
Publication of JPS58224138A publication Critical patent/JPS58224138A/en
Publication of JPS631385B2 publication Critical patent/JPS631385B2/ja
Granted legal-status Critical Current

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  • Powder Metallurgy (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、主として起重機等の低速域走行運搬
機械の集電装置に用いられるトロリーホイール並
びにトロリーシユー(以下集電子という)に適し
た耐摩耗性、耐アーク性焼結集電材の製造法に関
するものである。 前記の如き集電子は、電気的性質良好で、架線
との接触摩擦係数が小さく、かつ耐摩耗性、耐ア
ーク性に優れた材料でなくてはならないが、これ
らの条件をすべて具備する集電子を得ることはき
わめて困難である。ななわち、起重機等の走行運
搬機械は通常20Km/H以下の速度であるため、そ
の集電子は新幹線その他の高速車用と比較すると
架線との摩擦が大きく、架線への攻撃性を小さく
するためソフトな材質のものを用いる必要があ
り、このため、錫を含有する青銅鋳物や銅系焼結
合金が一般に使用されている。しかし乍ら、青銅
鋳物は潤滑材不足による高摩擦のため相手架線を
傷めると同時に自分自身の摩耗を早め、また低融
点金属である錫を含有しているところからアーク
に弱く、溶損などの欠点が生じやすい。銅系焼結
合金は前者に比較すると耐摩耗性および相手方架
線を傷めない点ではるかに優れているが、青銅鋳
物と同様に錫を含有しているため耐アーク性の点
において問題がある。 本発明は、前記従来の集電子の欠点を改善する
のみならず、さらにその性能の向上を目指したも
のである。すなわち、従来の青銅鋳物や銅系焼結
合金の基本的素地である銅−錫にかえて融点の高
い鉄−銅で素地を形成し、これによつて耐摩耗
性、耐アーク性を大幅に改善し、さらに潤滑材と
してグラフアイトと二硫化モリブデン等の金属硫
化物を配合して、その潤滑性能を飛躍的に向上せ
しめんとするものである。 本発明は、前記の目的を達成するため、重量比
にて、金属硫化物0.5〜7%、グラフアイト0.5〜
5%、燐0.2〜2%、銅20〜50%、残部鉄よりな
り、これらの粉末を混合後圧縮成形し、これを加
熱して焼結することを特徴とする。 上記の組成よりなる本発明の合金は、低融点金
属である錫や亜鉛を含有していないため、還元雰
囲気中で高い焼結温度を用いることができ、これ
によつて極めて強固な鉄−銅素地を形成すること
ができる。この場合、銅はその良好な焼結性によ
り焼結素地の強化に役立ち、さらにその導電性、
耐蝕性により集電材としての機能向上に不可欠の
ものであるが、その配合量が50%を越えると鉄に
くらべて低融点のため耐アーク性が低下し、ま
た、20%未満では機械的強度が低下するので、銅
の配合量は20〜50%にすることが必要である。 金属硫化物およびグラフアイトは微粒の粉末状
であつて、これが鉄−銅素地中に均斉に混在され
て潤滑性能を発揮するのであるが、潤滑成分はそ
の総量が12%を超えると鉄−銅素地の機械的強度
が大幅に低下するので、潤滑成分の総量は12%以
下におさえる必要がある。そして、金属硫化物は
発熱を伴なうような大荷重下においても抜群の能
力をもつた固体潤滑剤(昭和53年4月25日(株)幸書
房発行の「固体潤滑ハンドブツク」90−91頁参
照)であるので、金属硫化物を潤滑成分として使
用すると耐アーク性を向上させることができる
が、その比重は例えばM0S2は4.8であるので、前
記潤滑成分の総量12%を考慮すると金属硫化物の
配合のみでは十分な潤滑性能を期待することがで
きない。一方、グラフアイトは高温下における潤
滑性能は金属硫化物のそれより劣る(前記「固体
潤滑バンドブツク」の60頁参照)けれども、その
比重は2.2であるので、グラフアイトを併用する
と同じ重量%でも金属硫化物にくらべると2倍の
容量の潤滑成分を母体合金中に分散させることが
でき、かくして、金属硫化物とグラフアイトとを
併用すると、潤滑性能および耐アーク性を持ち乍
ら潤滑成分の総量を12%以内におさえて必要とす
る機械的強度を保有せしめることができる。そし
て、その配合割合は、耐アーク性と潤滑性とを考
慮すると、金属硫化物配合の上限は7%、グラフ
アイト配合の上限は5%であり、かつ、金属硫化
物とグラフアイト配合の下限はそれぞれ0.5%で
あつて、それ以下になると摩擦係数が大きくなつ
て潤滑性が欠如するため、相手方架線を傷める結
果となる。 燐は、前記鉄−銅−金属硫化物−グラフアイト
の焼結合金をつくる際、その強い脱酸作用によつ
て含有金属を清浄化して母体合金の機械的強度を
高めるもので、2%以上配合するとかえつて機械
的強度を低下させ、0.2%以下では前記の如き作
用を期待することができない。 なお、本発明により得た集電子は、焼結後約1
%含油せしめる。これは、鉄粉含有のため発錆防
止と架線との摩擦力低減のためである。 次に、本発明の具体的実施例を述べる。
The present invention relates to a method for manufacturing a wear-resistant, arc-resistant sintered current collector material suitable for trolley wheels and trolley shoes (hereinafter referred to as "collector") used mainly as current collectors for low-speed transport machines such as hoists. . The current collector described above must be made of a material that has good electrical properties, a low coefficient of friction when contacting the overhead wire, and has excellent wear resistance and arc resistance. is extremely difficult to obtain. In other words, since the speed of traveling transport machines such as hoists is usually less than 20 km/h, their collectors have more friction with the overhead wires than those for Shinkansen and other high-speed vehicles, making them less aggressive to the overhead wires. Therefore, it is necessary to use a soft material, and for this reason bronze castings containing tin or copper-based sintered alloys are generally used. However, due to the high friction caused by the lack of lubricant, bronze castings damage the other overhead wires and accelerate their own wear, and because they contain tin, a metal with a low melting point, they are susceptible to arcing and are susceptible to melting and damage. Defects are likely to occur. Copper-based sintered alloys are far superior to the former in terms of wear resistance and not damaging the other party's overhead wires, but like bronze castings, they contain tin, so they have problems in terms of arc resistance. The present invention aims not only to improve the drawbacks of the conventional current collectors but also to further improve their performance. In other words, instead of copper-tin, which is the basic base material of conventional bronze castings and copper-based sintered alloys, the base material is made of iron-copper, which has a high melting point, and this greatly improves wear resistance and arc resistance. The aim is to dramatically improve the lubricating performance by adding graphite and a metal sulfide such as molybdenum disulfide as a lubricant. In order to achieve the above object, the present invention has a weight ratio of 0.5 to 7% metal sulfide and 0.5 to 7% graphite.
5% phosphorus, 0.2 to 2% phosphorus, 20 to 50% copper, and the balance iron, and is characterized in that these powders are mixed, compression molded, and then heated and sintered. Since the alloy of the present invention having the above composition does not contain tin or zinc, which are low melting point metals, a high sintering temperature can be used in a reducing atmosphere, thereby producing an extremely strong iron-copper A base material can be formed. In this case, copper helps to strengthen the sintered matrix due to its good sintering properties, as well as its conductivity and
It is essential for improving its functionality as a current collector due to its corrosion resistance, but if its content exceeds 50%, its arc resistance will decrease due to its lower melting point compared to iron, and if it is less than 20%, its mechanical strength will decrease. Since the amount of copper decreases, it is necessary to adjust the amount of copper to 20 to 50%. Metal sulfides and graphite are in the form of fine powder particles, and when they are uniformly mixed in the iron-copper matrix, they exhibit lubricating performance. However, if the total amount of the lubricating components exceeds 12%, the iron-copper The total amount of lubricating components must be kept below 12% since the mechanical strength of the base material will be significantly reduced. Metal sulfides are solid lubricants that have outstanding performance even under heavy loads that generate heat ("Solid Lubrication Handbook" published by Saisho Shobo Co., Ltd., April 25, 1971, 90-91). (see page), arc resistance can be improved by using metal sulfide as a lubricant component, but its specific gravity is, for example, M 0 S 2 is 4.8, so considering the total amount of the lubricant component is 12%. Therefore, sufficient lubrication performance cannot be expected from the combination of metal sulfides alone. On the other hand, although graphite's lubricating performance at high temperatures is inferior to that of metal sulfides (see page 60 of the aforementioned "Solid Lubrication Band Book"), its specific gravity is 2.2, so if graphite is used in combination, even if the same weight percentage is used, Twice the capacity of lubricating components can be dispersed in the base alloy compared to sulfides, and thus, when metal sulfides and graphite are used in combination, the total amount of lubricating components can be reduced while maintaining lubricating performance and arc resistance. It is possible to maintain the required mechanical strength by keeping it within 12%. Considering arc resistance and lubricity, the upper limit for the metal sulfide mixture is 7%, the upper limit for the graphite mixture is 5%, and the lower limit for the metal sulfide and graphite mixture. is 0.5% each, and if it is less than that, the coefficient of friction increases and lubricity is lost, resulting in damage to the other party's overhead wire. When making the iron-copper-metal sulfide-graphite sintered alloy, phosphorus cleans the contained metals through its strong deoxidizing action and increases the mechanical strength of the base alloy, and is used in an amount of 2% or more. If it is added, the mechanical strength will be reduced, and if it is less than 0.2%, the above-mentioned effect cannot be expected. Note that the current collector obtained according to the present invention has a temperature of about 1 after sintering.
% oil impregnation. This is because it contains iron powder to prevent rust and reduce frictional force with overhead wires. Next, specific examples of the present invention will be described.

【表】 前記各実施例の割合で配合した材料を混合機で
均斉に混合後、これを5T/cm2で圧縮成形し、還
元雰囲気中にて1050℃で焼結し、その後約1%含
油して製品を得た。 上記各実施例により得た焼結合金の物理的特性
を示すと第1表のとおりである。
[Table] After uniformly mixing the materials in the proportions shown in the above examples using a mixer, this was compression molded at 5T/ cm2 , sintered at 1050℃ in a reducing atmosphere, and then approximately 1% oil-impregnated. and got the product. Table 1 shows the physical properties of the sintered alloys obtained in each of the above examples.

【表】 上記本発明品と性能比較試験をするための試料
として、青銅鋳物と銅系焼結合金を入手した。そ
の物理的特性、および鉄−銅系焼結集電材として
公知の特公昭44−19015号による焼結合金の物理
的特性を示すと第2表のとおりである。
[Table] Bronze castings and copper-based sintered alloys were obtained as samples for performance comparison tests with the above-mentioned products of the present invention. Table 2 shows its physical properties and the physical properties of the sintered alloy according to Japanese Patent Publication No. 19015/1983, which is known as an iron-copper based sintered current collector.

【表】 第1表、第2表の各材料から試験片10×25×90
mmを切出し、これを回転式摺動試験機にとりつ
け、押付力5Kg、通電電流AC100A、摺動速度54
Km/H、450r.p.mで100分間無潤滑で硬銅トロリ
ー線に摺動させ、その時の各試験片の比摩耗量
(試験片の摩耗した体積mm3を試験片押圧力Kgと摩
擦距離mmの積で除したもの)と、トロリー線の摩
耗寸法mmの測定、並びに試験片の摺面の状態を観
察した。その結果を第3表に示す。
[Table] 10 x 25 x 90 test pieces from each material in Tables 1 and 2
mm, and attached it to a rotary sliding testing machine, with a pressing force of 5 kg, a current of AC 100 A, and a sliding speed of 54 mm.
Km/H, 450rpm for 100 minutes without lubrication on a hard copper trolley wire, and the specific wear amount of each test piece at that time (the worn volume of the test piece mm 3 is the test piece pressing force Kg and the friction distance mm (divided by the product of ), the wear dimension of the trolley wire (mm), and the condition of the sliding surface of the test piece were observed. The results are shown in Table 3.

【表】 前記第1表により明らかなように、本発明によ
り得た焼結合金は、集電子に必要とする電気的、
機械的特性を具備し、かつ、第3表により明らか
なように、現在使用されている錫含有の青銅鋳物
や銅系焼結合金製集電子ならびに従来の鉄−銅系
焼結集電材に比較して、その耐摩耗性、耐アーク
性を顕著に向上せしめると共に、相手方架線を痛
めないことが立証される。 特に、本発明においては、前記の如く、耐摩耗
性、耐アーク性が向上しているだけではなく、そ
の摺面は平滑で黒褐色の潤滑光沢があり、従つて
相手方架線の摺動表面の損傷と摩耗を顕著に減少
せしめることができる効果があり、低速域走行用
集電子としてきわめて有益である。
[Table] As is clear from Table 1 above, the sintered alloy obtained by the present invention has the electrical and
It has excellent mechanical properties and, as shown in Table 3, is superior to current collectors made of tin-containing bronze castings, copper-based sintered alloys, and conventional iron-copper-based sintered current collectors. It has been proven that the wear resistance and arc resistance are significantly improved, and that the other party's overhead wires are not damaged. In particular, in the present invention, not only the abrasion resistance and arc resistance are improved as described above, but also the sliding surface is smooth and has a blackish-brown lubricating luster, which prevents damage to the sliding surface of the other overhead wire. This has the effect of significantly reducing wear and tear, making it extremely useful as a current collector for low-speed driving.

Claims (1)

【特許請求の範囲】[Claims] 1 重量比にて、金属硫化物0.5〜7%、グラフ
アイト0.5〜5%、燐0.2〜2%、銅20〜50%、残
部鉄よりなる粉末材料を混合後圧縮成形し、これ
を加熱して焼結することを特徴とする低速域走行
用焼結集電材の製造法。
1. A powder material consisting of 0.5 to 7% metal sulfide, 0.5 to 5% graphite, 0.2 to 2% phosphorus, 20 to 50% copper, and the balance iron is mixed and compression molded, and this is heated. A method for producing a sintered current collector for low-speed driving, characterized by sintering the material.
JP10757682A 1982-06-24 1982-06-24 Manufacture of sintered material for collector for traveling in low-speed region Granted JPS58224138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10757682A JPS58224138A (en) 1982-06-24 1982-06-24 Manufacture of sintered material for collector for traveling in low-speed region

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10757682A JPS58224138A (en) 1982-06-24 1982-06-24 Manufacture of sintered material for collector for traveling in low-speed region

Publications (2)

Publication Number Publication Date
JPS58224138A JPS58224138A (en) 1983-12-26
JPS631385B2 true JPS631385B2 (en) 1988-01-12

Family

ID=14462668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10757682A Granted JPS58224138A (en) 1982-06-24 1982-06-24 Manufacture of sintered material for collector for traveling in low-speed region

Country Status (1)

Country Link
JP (1) JPS58224138A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2805923B2 (en) * 1989-12-11 1998-09-30 株式会社 小松製作所 Iron-based sintered sliding material
RU2471881C1 (en) * 2011-11-07 2013-01-10 Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" Mechanically activated sintered iron-graphite composite for female dies of combined casting and rolling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4920844A (en) * 1972-06-20 1974-02-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4920844A (en) * 1972-06-20 1974-02-23

Also Published As

Publication number Publication date
JPS58224138A (en) 1983-12-26

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