JPH0251345A - Manufacture of carbon brush - Google Patents
Manufacture of carbon brushInfo
- Publication number
- JPH0251345A JPH0251345A JP19965388A JP19965388A JPH0251345A JP H0251345 A JPH0251345 A JP H0251345A JP 19965388 A JP19965388 A JP 19965388A JP 19965388 A JP19965388 A JP 19965388A JP H0251345 A JPH0251345 A JP H0251345A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- powder
- binder
- abrasives
- molybdenum disulfide
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910052799 carbon Inorganic materials 0.000 title claims description 5
- 239000002245 particle Substances 0.000 claims abstract description 45
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 13
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 12
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 2
- 239000003082 abrasive agent Substances 0.000 abstract description 10
- 239000000314 lubricant Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000001143 conditioned effect Effects 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011361 granulated particle Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000006253 pitch coke Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 235000011835 quiches Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011134 resol-type phenolic resin Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011271 tar pitch Substances 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は回転電機用、特に小型回転電機用のカーボンブ
ラシの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing carbon brushes for rotating electric machines, particularly for small-sized rotating electric machines.
（従来の技術）
カーボンブラシ（以下ブラシと呼ぶ）の摺動接触を保持
するため、整流子面に過剰に生成された表皮膜を除去す
るものとして、特公昭３９−１６３６３号公報に示され
るように、ブラシ中に無定形シリカとアルカリ金属、ア
ルカリ土類金属。(Prior art) In order to maintain the sliding contact of carbon brushes (hereinafter referred to as brushes), a method for removing an excessively formed skin film on the commutator surface is disclosed in Japanese Patent Publication No. 39-16363. Amorphous silica and alkali metals and alkaline earth metals in the brush.
マンガン、アルミニウム、ビスマス斤ツケル等のような
シリカ結晶化促進作用を有する金属とを含有させ、７０
０〜ｉ、ｏｏｏ℃程度で熱処理してブラシを製造する方
法がある。また、有害な整流子・表皮膜の生成を未然に
防止し、適正な皮膜調製作用を与え、高速回転下におい
ても安定したすり特性を得るものとして特公昭５８−５
８７８７号公報に示されているように黒鉛粉に結合剤と
０．５〜５重量％のアルミニウム粉とを添加し、３５０
℃以下の温度で処理し、少量のアルミニウム粉による皮
膜調整作用により整流子面の表皮膜の生成が過剰になる
ことを抑え、ブラシの座乗性を良好にしたブラシがある
。また同様の目的で特公昭６０−１３３８２号公報に示
されているように黒鉛粉に結合剤とアルミニウム粉と炭
化珪素粉とを添加し１５０℃以上３５０℃以下の温度で
熱処理するブラシの製造法が提案されている。containing metals that promote silica crystallization, such as manganese, aluminum, bismuth, etc., and
There is a method of manufacturing a brush by heat treatment at a temperature of about 0 to i,00°C. In addition, it was developed under the Japanese Patent Publication No. 58-5 as a product that prevents the formation of harmful commutator/surface films, provides an appropriate film preparation effect, and provides stable rubbing characteristics even under high-speed rotation.
As shown in Japanese Patent No. 8787, a binder and 0.5 to 5% by weight of aluminum powder are added to graphite powder, and 350%
There is a brush that is treated at a temperature of 0.degree. Furthermore, for the same purpose, as shown in Japanese Patent Publication No. 60-13382, a method for manufacturing brushes involves adding a binder, aluminum powder, and silicon carbide powder to graphite powder and heat-treating the mixture at a temperature of 150°C or higher and 350°C or lower. is proposed.
（発明が解決しようとする課題）
特公昭３９−１６３６３号公報に示されるプラシは整流
子の表皮膜を除去する効果はあるものの。(Problems to be Solved by the Invention) Although the brush disclosed in Japanese Patent Publication No. 39-16363 is effective in removing the surface film of the commutator.
高速回転で容量の大きい回転電機においては結晶化シリ
カによる引掻きが発生し摺動接触状態が不安定となり、
また特公昭５８−５８７８７号公報及び特公昭６０−１
３３８２号公報に示されるブラシは摺動接触の安定性の
点では効果がみられるものの容量の大きい回転電機に対
しては整流子の表皮膜を除去する効果の点では充分とは
言い難い。In rotating electric machines that rotate at high speed and have a large capacity, scratches from crystallized silica occur, making the sliding contact state unstable.
Also, Special Publication No. 58-58787 and Special Publication No. 60-1
Although the brush disclosed in Japanese Patent No. 3382 is effective in terms of stability of sliding contact, it cannot be said to be effective in removing the surface film of the commutator for large-capacity rotating electric machines.
本発明は近年の回転電機のパワーアップにともない整流
子面の表皮膜が過剰に生成することを未然に防止し、高
速回転で容量の大きい回転電機においてもブラシ摩耗の
少ない長寿命の回転電機用ブラシを提供するものである
。The present invention prevents the excessive formation of a skin film on the commutator surface due to the power up of rotating electric machines in recent years, and provides a long-life rotating electric machine with less brush wear even in high-speed rotation and large capacity rotating electric machines. It provides a brush.
（ｌ！？！題を解決するだめの手段）
本発明は２粒径５０μｍ以下の研磨材と二硫化モリブデ
ン又は二硫化タングステンの粉末と結合材の溶液とを混
練して７５〜３００μｍの造粒子を得、黒鉛粉と結合材
とを混練して粉砕した混練物に前記黒鉛粉に対して１〜
１０重量％の前記造粒子を混合し、成形及び焼成するこ
とを特徴とするブラシの製造法に関する。(l!?!An unsuccessful means to solve the problem) The present invention produces particles of 75 to 300 μm by kneading two abrasives with a particle size of 50 μm or less, powder of molybdenum disulfide or tungsten disulfide, and a solution of a binder. 1 to 1 to the graphite powder to a kneaded product obtained by kneading and pulverizing graphite powder and a binder.
The present invention relates to a method for manufacturing a brush, which comprises mixing 10% by weight of the particles, molding and firing.
本発明に用いられる黒鉛粉は石油系または石炭系コーク
スなどを黒鉛化して得られる通常の人造黒鉛、天然黒鉛
、キッシュ黒鉛、熱分解黒鉛等の粉末が用いられ、結合
材と混線後任量の粒度に粉砕される。黒鉛粉の粒度及び
結合材との混線後粉砕したものの粒度は特に制限はない
。The graphite powder used in the present invention is usually artificial graphite obtained by graphitizing petroleum-based or coal-based coke, natural graphite, quiche graphite, pyrolytic graphite, etc., and the particle size of the binder and the crosstalk successor amount are used. crushed into There are no particular restrictions on the particle size of the graphite powder or the particle size of the graphite powder mixed with the binder and then crushed.
黒鉛粉の結合材としてはノボラック壓フェノール樹脂、
レゾール型フェノール樹脂、エポキシ樹脂等の熱硬化性
樹脂またはタールピッチ、コールタール等が用いられる
。Novolac phenolic resin is used as a binder for graphite powder,
Thermosetting resins such as resol type phenolic resins and epoxy resins, tar pitch, coal tar, etc. are used.
本発明によるブラシには前述の原料と共に研暦材粉と二
硫化モリブデン又は二硫化タングステンの潤滑材粉末を
結合材の溶液で造粒した造粒子が用いられる。造粒用の
結合材は熱硬化性樹脂が好ましく、該樹脂に可溶性の溶
剤と共に用いる。The brush according to the present invention uses, in addition to the above-mentioned raw materials, granulated particles obtained by granulating a lubricant powder of molybdenum disulfide or tungsten disulfide with a binder solution. The binder for granulation is preferably a thermosetting resin, and is used together with a solvent soluble in the resin.
本発明に用いられる研磨材はｒアルミナ、αアルミナ、
シリカ、炭化珪素、酸化クロム等の粉末で５０μｍ以下
の粉末が用いられる。また、二硫化そりブデン又は二硫
化タングステンの粉末の粒径には制限がないが平均粒径
５μｍ以下のものが一般に用いられる。The abrasives used in the present invention include r-alumina, α-alumina,
Powders of silica, silicon carbide, chromium oxide, etc. with a diameter of 50 μm or less are used. Further, although there is no limit to the particle size of the powder of trisulfide disulfide or tungsten disulfide, those having an average particle size of 5 μm or less are generally used.
本発明に用いられる研磨材は５０μｍを越えると研磨作
用が強くなり過ぎ整流子面に条痕ある込は段摩耗が発生
する。When the abrasive material used in the present invention exceeds 50 .mu.m, the abrasive action becomes too strong, and if there are scratches on the commutator surface, step wear occurs.
本発明に用いられる研磨材と二硫化モリブデン又は二硫
化タングステンとの造粒子は適量の結合材の溶液と混練
後分級して７５μｍ〜３００μｍの粒度範囲に調整した
ものが使用される。７５μｍ未満では整流子面の表皮膜
を除去する効果と共に二硫化モリブデンまたは二硫化タ
ングステンによる潤滑効果が得られ難い。造粒子の径が
３００μｍを越えるとブラシ中に絶縁物が偏在すること
になり、また過剰の表皮膜を除去する作用にもムラがあ
シ、整流子面に帯状の条痕が発生し易くなる。The particles of the abrasive and molybdenum disulfide or tungsten disulfide used in the present invention are mixed with an appropriate amount of a binder solution and then classified to have a particle size in the range of 75 μm to 300 μm. If the thickness is less than 75 μm, it is difficult to obtain the effect of removing the skin film on the commutator surface and the lubricating effect of molybdenum disulfide or tungsten disulfide. If the diameter of the particles exceeds 300 μm, the insulator will be unevenly distributed in the brush, and the effect of removing excess skin film will be uneven, making band-like streaks more likely to occur on the commutator surface. .
本発明に用いられる研磨材と二硫化モリブデン文は二硫
化タングステンとの配合比率には制限はなく、整流子面
に生成される表皮膜の程度によシ適宜調整することがで
きる。The blending ratio of the abrasive and molybdenum disulfide used in the present invention with tungsten disulfide is not limited and can be adjusted as appropriate depending on the degree of the surface film formed on the commutator surface.
研磨材と潤滑材との造粒子の添加量は黒鉛粉に対して１
〜１０重ｉ−ｓであり、１重量％未満では上述の造粒子
径が７５μｍ未満の場合と同様に効果がなく、１０１［
ｉ％を越えると研磨作用が過剰となり摺動接触状態が悪
化し火花の発生が増大する。The amount of abrasive and lubricant particles added is 1 to graphite powder.
~10 weight i-s, and if it is less than 1% by weight, there is no effect as in the case where the particle size is less than 75 μm, and 101 [
If it exceeds i%, the polishing action becomes excessive, the sliding contact condition worsens, and the generation of sparks increases.
（実施例） 以下１本発明の詳細な説明する。(Example) Hereinafter, one aspect of the present invention will be explained in detail.
実施例１
粒径が最大５０μｍ、平均１５μｍのα−アルミナ１０
重量部と平均粒径５μｍの二硫化モリブデン９０重量部
とを混合した後、該混合物に結合材としてＨＰ−２０８
ＮＫ（ノボラック壓フェノール樹脂９日立化成工業株式
会社製、商品名）を２０重量部、及びメタノール２０！
量部を加え５５℃で混線後分級し、１００μｍ〜２５０
μｍの粒度の造粒子を得た。平均粒径２０μｍのピッチ
コークス系人造黒鉛粉７０重量部に結合材として前記Ｈ
Ｐ−２０８ＮＫ３０重量部及びメタノール３０重量部を
加えて５５℃で混練した後、粉砕して１００μｍ以下の
混練物を得１次いで該黒鉛粉に対し前記造粒子を０．５
〜１５重ｆＬ−の割合で該混練粉に添加混合し、混合物
を”−２ｔ／Ｃｍ”で成形し７００℃で焼成して造粒子
の添加量が８種類のプラン素材を得た。Example 1 α-Alumina 10 with a maximum particle size of 50 μm and an average of 15 μm
After mixing parts by weight with 90 parts by weight of molybdenum disulfide having an average particle size of 5 μm, HP-208 was added to the mixture as a binder.
20 parts by weight of NK (novolac phenol resin 9, manufactured by Hitachi Chemical Co., Ltd., trade name) and 20 parts of methanol!
100 μm to 250 μm.
Particles with a particle size of μm were obtained. 70 parts by weight of pitch coke-based artificial graphite powder with an average particle size of 20 μm was added with the above H
After adding 30 parts by weight of P-208NK and 30 parts by weight of methanol and kneading at 55°C, the mixture was pulverized to obtain a kneaded product with a particle size of 100 μm or less. 1. Next, the above-mentioned particles were added to the graphite powder by 0.5%.
The mixture was added to the kneaded powder at a rate of ~15 weight fL-, and the mixture was molded at "-2t/Cm" and fired at 700°C to obtain plan materials with eight types of added amounts of particles.
実施例２
粒径が最大５０μｍ平均３０μｍのγ−アルミナ２０重
量部と平均粒径５μｍの二硫化タングステン８０ｉ−ｉ
部を用いて実施例１と同様の方法により１００μｍ〜２
５０μｍの造粒子を得、該造粒子を実施例１と同様に黒
鉛粉に対して１〜１５重ｆｉｔ％の割合で混練粉に添加
混合し、実施例１と同様にして成形、焼成して造粒子の
添加量が８種類のブラシ素材を得た。Example 2 20 parts by weight of γ-alumina with a maximum particle size of 50 μm and an average particle size of 30 μm and tungsten disulfide 80i-i with an average particle size of 5 μm
100 μm to 2 by the same method as in Example 1 using
Particles of 50 μm were obtained, and the particles were added to and mixed with kneaded powder at a ratio of 1 to 15 weight percent based on graphite powder in the same manner as in Example 1, and molded and fired in the same manner as in Example 1. Brush materials with eight types of particle addition amounts were obtained.
実施例３
粒径が最大５０μｍ、平均ｌＯμｍの炭化珪素粉５重量
部と平均粒径５μｍの二硫化モリブデン９５重量部を用
いて実施例１と同様の方法により１００μｍ〜２５０μ
ｍの造粒子を得、これを黒鉛粉に対して１〜１５重ｆｎ
％の割合で混練粉に添加混合し、実施例１と同様にして
成形、焼成して８種類のブラシ素材を得た。Example 3 Using 5 parts by weight of silicon carbide powder with a maximum particle size of 50 μm and an average of 10 μm, and 95 parts by weight of molybdenum disulfide with an average particle size of 5 μm, particles of 100 μm to 250 μm were prepared in the same manner as in Example 1.
m particles were obtained, and this was mixed with graphite powder by 1 to 15 times fn.
% to the kneaded powder, molded and baked in the same manner as in Example 1 to obtain eight types of brush materials.
比較例１
研磨材に平均粒径８５μｍのα−アルミナを用いた以外
は実施例１と同様にしてブラシ材を得た。Comparative Example 1 A brush material was obtained in the same manner as in Example 1 except that α-alumina having an average particle size of 85 μm was used as the abrasive material.
比較例２
研磨材に平均粒径６０μｍの炭化珪素粉を用いた以外は
実施例３と同様にしてブラシ材を得た。Comparative Example 2 A brush material was obtained in the same manner as in Example 3, except that silicon carbide powder with an average particle size of 60 μm was used as the abrasive material.
比較例３
実施例１と同様にして研磨材と潤滑材とを樹脂溶液で混
線後分級して７５μｍ未満の造粒粉と２５０μｍを越え
る造粒粉を得、該黒鉛粉に対し１、 ５． １０重ｉチ
となるように混練粉に添加混合し、以下実施例１と同様
にしてブラシ材を得た。Comparative Example 3 In the same manner as in Example 1, an abrasive material and a lubricant were mixed with a resin solution and then classified to obtain granulated powder of less than 75 μm and granulated powder of more than 250 μm. The mixture was added to the kneaded powder so as to have a weight of 10 parts, and the same procedure as in Example 1 was carried out to obtain a brush material.
以上の実施例及び比較例で得たブラシ材からブラシを加
工し、ＡＣＩ ＯＯＶ、１ｋＷ、回転数２６．００ Ｏ
ｒｐｍの交流整流子電動機を使用してブラシ摩耗の比較
試験を行った。第１図に実施例で得たブラシについての
研磨材と潤滑材との造粒子添加量とブラシ摩耗を示し、
第２図に比較例で得たカーボンブラシについて、同様に
研■材と潤滑材との造粒子添加量とブラシ摩耗量の関係
を示した。A brush was processed from the brush materials obtained in the above Examples and Comparative Examples, and the ACI OOV was 1kW and the rotation speed was 26.00 O.
A comparative test of brush wear was conducted using an alternating current commutator motor at rpm. Figure 1 shows the amount of particles added to the abrasive and lubricant and the brush wear for the brushes obtained in the examples.
FIG. 2 similarly shows the relationship between the amount of abrasive and lubricant particles added and the amount of brush wear for the carbon brush obtained in the comparative example.
Ｍ１図及び第２図より明らかなように研摩材と潤滑材と
の造粒子を１〜１０重量％添加したブラシはブラシ摩耗
量が少なく、研磨材と潤滑材との造粒子の添加量が１重
量％未満の場合は整流子面の過剰に生成された表皮膜を
除去する効果がなく。As is clear from Fig. M1 and Fig. 2, brushes to which 1 to 10% by weight of abrasive and lubricant particles were added had less brush wear; If the amount is less than % by weight, there is no effect in removing the excessively produced skin film on the commutator surface.
運４−時間の経過と共に皮膜が過剰となシ火花が大きく
なるためブラシ摩耗が増大する。また、添加量が１０ｆ
ｆｉ址チを越えて多過ぎる場合は研磨作用過１ｊによる
不安定摺動となって火花が大きくなり。4- As time passes, the coating becomes excessive and sparks become larger, resulting in increased brush wear. Also, the amount added is 10f
If the amount exceeds the fi limit, unstable sliding will occur due to excessive abrasive action and sparks will become large.
添加造粒子の脱落が発生してブラシ摩耗が増大する。Added particles may fall off, increasing brush wear.
（発明の効果）
本発明で得られるブラシは研磨材のもつ皮膜調整作用と
潤滑材のもつ潤滑作用を兼ね備え１回転電機の整流子面
への皮膜が過剰になることを未然に防止し、高温下にお
ける潤滑効果があり、大容量の回転電機でも長慢命であ
る。(Effects of the Invention) The brush obtained by the present invention has both the film-adjusting action of the abrasive and the lubricating action of the lubricant, prevents excessive film from forming on the commutator surface of single-rotation electric machines, and prevents high temperatures. It has a lubricating effect underneath, and has a long life even in large-capacity rotating electric machines.
第１図及び第２図はブラシへの研磨材と潤滑材との造粒
子添加量とブラシ摩耗量との関係を示すグラフである。FIGS. 1 and 2 are graphs showing the relationship between the amount of abrasive and lubricant particles added to the brush and the amount of wear of the brush.
Claims (1)
二硫化タングステンの粉末と結合材の溶液とを混練して
７５〜３００μｍの造粒子を得、黒鉛粉と結合材とを混
練して粉砕した混練粉に前記黒鉛粉に対して１〜１０重
量％の前記造粒子を混合し、成形及び焼成することを特
徴とするカーボンブラシの製造法。1. An abrasive with a particle size of 50 μm or less, molybdenum disulfide or tungsten disulfide powder, and a binder solution were kneaded to obtain particles of 75 to 300 μm, and graphite powder and a binder were kneaded and crushed. A method for manufacturing a carbon brush, which comprises mixing kneaded powder with 1 to 10% by weight of the particles based on the graphite powder, molding and firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19965388A JPH0251345A (en) | 1988-08-10 | 1988-08-10 | Manufacture of carbon brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19965388A JPH0251345A (en) | 1988-08-10 | 1988-08-10 | Manufacture of carbon brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251345A true JPH0251345A (en) | 1990-02-21 |
Family
ID=16411412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19965388A Pending JPH0251345A (en) | 1988-08-10 | 1988-08-10 | Manufacture of carbon brush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251345A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000015411A (en) * | 1998-08-28 | 2000-03-15 | 밍 루 | Manufacturing method of carbon brush for vehicle motor |
| US6909219B2 (en) * | 2000-06-28 | 2005-06-21 | Totankako Co., Ltd. | Carbon brush for electric machine |
| US7498712B2 (en) | 2006-09-01 | 2009-03-03 | Energy Conversion Systems Holdings, Llc | Grain orientation control through hot pressing techniques |
| JP2011009212A (en) * | 2009-06-25 | 2011-01-13 | Schunk Kohlenstofftechnik Gmbh | Carbon brush |
-
1988
- 1988-08-10 JP JP19965388A patent/JPH0251345A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000015411A (en) * | 1998-08-28 | 2000-03-15 | 밍 루 | Manufacturing method of carbon brush for vehicle motor |
| US6909219B2 (en) * | 2000-06-28 | 2005-06-21 | Totankako Co., Ltd. | Carbon brush for electric machine |
| US7498712B2 (en) | 2006-09-01 | 2009-03-03 | Energy Conversion Systems Holdings, Llc | Grain orientation control through hot pressing techniques |
| JP2011009212A (en) * | 2009-06-25 | 2011-01-13 | Schunk Kohlenstofftechnik Gmbh | Carbon brush |
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