JPH108034A - Friction material composition - Google Patents
Friction material compositionInfo
- Publication number
- JPH108034A JPH108034A JP16474496A JP16474496A JPH108034A JP H108034 A JPH108034 A JP H108034A JP 16474496 A JP16474496 A JP 16474496A JP 16474496 A JP16474496 A JP 16474496A JP H108034 A JPH108034 A JP H108034A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- material composition
- inorganic particles
- weight
- coke
- 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
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、鉄道車
両、各種産業機械等の制動に用いられるディスクブレー
キパッド、ブレーキライニング等の摩擦材に適した摩擦
材組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction material composition suitable for a friction material such as a disc brake pad and a brake lining used for braking automobiles, railway vehicles, various industrial machines, and the like.
【０００２】[0002]
【従来の技術】自動車、鉄道車両、各種産業機械等に
は、その制動のためディスクブレーキパッド、ブレーキ
ライニング等の摩擦材が使用されている。この摩擦材と
して、従来は特公昭５９−４４６２号公報などに示され
るようにスチール繊維を主構成繊維としたセミメタリッ
ク系摩擦材が主流であったが、現在はスチール繊維に代
えて特開平６−１８４５２５号公報などに示されるよう
にアラミド繊維、セラミック繊維等を用いて、制動時の
鳴きや、異音の少ないNon・Asbestos・Organic（ノン・ア
スベストス・オーガニック）（以下ＮＡＯとする）系摩
擦材への移行が急速に進んできた。2. Description of the Related Art Friction materials such as disc brake pads and brake linings are used in automobiles, railway vehicles, various industrial machines and the like for braking. Conventionally, as this friction material, a semi-metallic friction material mainly composed of steel fiber as shown in Japanese Patent Publication No. 59-4462 was mainly used. Non-Asbestos-Organic (hereinafter referred to as NAO) based on aramid fiber, ceramic fiber, etc., which produces less squeal and noise when braking as shown in JP-A-184525. The transition to friction materials has progressed rapidly.
【０００３】しかしながら、ＮＡＯ系摩擦材は強度や耐
摩耗性を付与するためにアラミド繊維や結合材の含有割
合が従来のものより多くなっているのが一般的であり、
そのため耐フェード特性、効力等に劣る欠点がある。[0003] However, in order to impart strength and abrasion resistance to NAO-based friction materials, the content ratio of aramid fiber and binder is generally larger than that of conventional ones.
For this reason, there is a defect that the fade resistance and the efficacy are inferior.
【０００４】[0004]
【発明が解決しようとする課題】請求項１記載の発明
は、耐フェード特性、効力に優れ、かつ制動時の鳴き
や、異音がほとんど発生しない摩擦材に適した摩擦材組
成物を提供するものである。請求項２記載の発明は、請
求項１記載の効果に加えて、強度に優れる摩擦材に適し
た摩擦材組成物を提供するものである。請求項３記載の
発明は、請求項１又は２記載の発明のうち、特に耐フェ
ード特性と効力に優れる摩擦材に適した摩擦材組成物を
提供するものである。請求項４記載の発明は、請求項
１、２又は３記載の発明のうち、特に制動時の鳴き、異
音発生防止効果に優れる摩擦材に適した摩擦材組成物を
提供するものである。SUMMARY OF THE INVENTION The present invention provides a friction material composition which is suitable for a friction material which is excellent in fade resistance and effectiveness and hardly produces squeal and abnormal noise during braking. Things. The invention described in claim 2 provides a friction material composition suitable for a friction material having excellent strength, in addition to the effects described in claim 1. A third aspect of the present invention provides a friction material composition suitable for a friction material having particularly excellent fade resistance and effectiveness among the inventions of the first or second aspect. A fourth aspect of the present invention is to provide a friction material composition suitable for a friction material having an excellent effect of preventing squeal and abnormal noise during braking, among the inventions according to the first, second, and third aspects.
【０００５】[0005]
【課題を解決するための手段】本発明は、無機粒子含有
コークスを摩擦材組成物に対して２〜５０重量％含有し
てなる摩擦材組成物に関する。また、本発明は、この摩
擦材組成物において、無機粒子含有コークスの最大粒径
が、３mm以下である摩擦材組成物に関する。また、本発
明は、この摩擦材組成物において、無機粒子が、無機粒
子含有コークスに対して０．１〜２０重量％含有されて
なる摩擦材組成物に関する。さらに、本発明は、この摩
擦材組成物において、無機粒子の最大粒径が、２００μ
ｍ以下である摩擦材組成物に関する。SUMMARY OF THE INVENTION The present invention relates to a friction material composition containing 2 to 50% by weight of a coke containing inorganic particles based on the friction material composition. The present invention also relates to a friction material composition in which the maximum particle size of the inorganic particle-containing coke in the friction material composition is 3 mm or less. The present invention also relates to a friction material composition comprising the friction material composition, wherein the inorganic particles are contained in an amount of 0.1 to 20% by weight based on the inorganic particle-containing coke. Further, the present invention provides the friction material composition, wherein the maximum particle size of the inorganic particles is 200 μm.
m or less.
【０００６】[0006]
【発明の実施の形態】本発明において、無機粒子含有コ
ークスとしては、例えば、粘結炭を主成分とする石炭に
無機粒子を添加し、１１００〜１３００℃の温度で高温
乾留した後、冷却、粉砕したものが用いられる。また、
上記の他にピッチと無機粒子の混合物を乾留後、冷却、
粉砕したものも用いることができる。無機粒子含有コー
クスの含有量は摩擦材組成物に対して２〜５０重量％、
好ましくは１０〜３５重量％、さらに好ましくは１５〜
３０重量％の範囲とされ、２重量％未満であると耐フェ
ード性に劣り、５０重量％を越えると剪断強度などの機
械特性が低下する。なお石炭として粘結炭の他に、無煙
炭、歴青炭等を少量含有しても差し支えない。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as the inorganic particle-containing coke, for example, inorganic particles are added to coal containing caking coal as a main component, and after high temperature carbonization at a temperature of 1100 to 1300 ° C., cooling, A crushed one is used. Also,
After carbonizing the mixture of pitch and inorganic particles in addition to the above, cooling,
Grinded ones can also be used. The content of the inorganic particle-containing coke is 2 to 50% by weight based on the friction material composition,
Preferably it is 10 to 35% by weight, more preferably 15 to 35% by weight.
When the content is less than 2% by weight, fade resistance is poor. When the content is more than 50% by weight, mechanical properties such as shear strength deteriorate. A small amount of coal, such as anthracite and bituminous coal, may be used as the coal.
【０００７】また、無機粒子含有コークスの粒径は成形
性を良好にするために最大粒径が３mm以下であることが
好ましく、２．７mm以下であることがより好ましく、
２．５mm以下であることがさらに好ましい。３mmを越え
ると結合材や他の基材との密着性が低下し、成形時に亀
裂やしわが発生する傾向がある。なお粒径の下限は特に
制限はないが、１０μｍ以上が耐フェード性の面で好ま
しい。The particle size of the inorganic particle-containing coke preferably has a maximum particle size of 3 mm or less, more preferably 2.7 mm or less, in order to improve moldability.
More preferably, it is 2.5 mm or less. If it exceeds 3 mm, the adhesion to the binder and other base materials will be reduced, and cracks and wrinkles will tend to occur during molding. The lower limit of the particle size is not particularly limited, but is preferably 10 μm or more from the viewpoint of fade resistance.
【０００８】本発明で用いられる無機粒子は、アルミナ
（α型）、石英、ジルコニア、ジルコンサンド等のモー
ス硬度が４以上のものを一種類以上用いることが好まし
い。無機粒子の含有量は無機粒子含有コークスに対して
０．１〜２０重量％の範囲が好ましく、５〜１５重量％
の範囲がより好ましく、７〜１２重量％の範囲がさらに
好ましい。０．１重量％未満では、耐フェード性に劣
り、２０重量％を越えると鳴きや、異音の発生頻度が多
くなる傾向がある。また、無機粒子の最大粒径は２００
μｍ以下であることが好ましく、１９０μｍ以下である
ことがより好ましく、１５０μｍ以下であることがさら
に好ましい。２００μｍを越えると鳴きの発生頻度が多
くなる傾向がある。なお粒径の下限は特に制限はない
が、２μｍ以上が効力の面で好ましい。As the inorganic particles used in the present invention, it is preferable to use one or more types of inorganic particles having a Mohs' hardness of 4 or more, such as alumina (α type), quartz, zirconia, and zircon sand. The content of the inorganic particles is preferably in the range of 0.1 to 20% by weight, and more preferably 5 to 15% by weight based on the inorganic particle-containing coke.
Is more preferable, and the range of 7 to 12% by weight is still more preferable. If it is less than 0.1% by weight, the fade resistance is poor, and if it exceeds 20% by weight, the frequency of squealing and abnormal noise tends to increase. The maximum particle size of the inorganic particles is 200
μm or less, more preferably 190 μm or less, and even more preferably 150 μm or less. If it exceeds 200 μm, the frequency of occurrence of squeal tends to increase. The lower limit of the particle size is not particularly limited, but is preferably 2 μm or more from the viewpoint of efficacy.
【０００９】本発明における摩擦材組成物は、無機粒子
含有コークスの他に結合剤、繊維状物質、摩擦調整剤、
充填剤等が用いられ、さらに必要に応じてチタン酸カリ
ウム繊維や銅、黄銅等の金属粉が用いられる。これらの
成分は、全組成物が１００重量％となるように配合され
る。なお結合剤としては、ＮＢＲ、ＳＢＲ等の合成ゴム
やフェノール樹脂、メラミン樹脂等の熱硬化性樹脂が用
いられる。結合剤は全組成物中に１２〜２５重量％含有
することが好ましく、１５〜２２重量％含有することが
さらに好ましい。The friction material composition of the present invention comprises, in addition to the coke containing inorganic particles, a binder, a fibrous substance, a friction modifier,
A filler or the like is used, and a metal powder such as potassium titanate fiber or copper or brass is used as necessary. These components are blended so that the total composition becomes 100% by weight. As the binder, a synthetic rubber such as NBR or SBR or a thermosetting resin such as a phenol resin or a melamine resin is used. The binder is preferably contained in the entire composition in an amount of 12 to 25% by weight, more preferably 15 to 22% by weight.
【００１０】繊維状物質としては、ガラス繊維、セラミ
ック繊維、炭素繊維、鉱物繊維等の無機繊維、アラミド
繊維、ポリアミド繊維、ポリイミド繊維等の有機繊維、
銅繊維、黄銅繊維等の金属繊維が用いられる。繊維状物
質は全組成物中に３〜２０重量％含有することが好まし
く、５〜１８重量％含有することがさらに好ましい。Examples of the fibrous substance include inorganic fibers such as glass fiber, ceramic fiber, carbon fiber, and mineral fiber; organic fibers such as aramid fiber, polyamide fiber, and polyimide fiber;
Metal fibers such as copper fibers and brass fibers are used. The fibrous substance is preferably contained in the entire composition in an amount of 3 to 20% by weight, more preferably 5 to 18% by weight.
【００１１】充填剤としては、硫酸バリウム、炭酸カル
シウム、炭酸マグネシウム、カシューダスト等が用いら
れ、全組成物中に１０〜５５重量％含有することが好ま
しく、２０〜５０重量％含有することがさらに好まし
い。また摩擦調整剤としては、黒鉛、カーボン粉、Ｍｏ
Ｓ2、Ｓｂ2Ｏ3、ＺｎＳ等が用いられ、全組成物中に１
〜１５重量％含有することが好ましく、５〜１０重量％
含有することがさらに好ましい。As the filler, barium sulfate, calcium carbonate, magnesium carbonate, cashew dust and the like are used, and the content is preferably 10 to 55% by weight, more preferably 20 to 50% by weight in the total composition. preferable. In addition, graphite, carbon powder, Mo
S 2 , Sb 2 O 3 , ZnS and the like are used, and 1
-15% by weight, preferably 5-10% by weight
More preferably, it is contained.
【００１２】本発明になる摩擦材組成物は、上記成分を
所定量配合した後、混合機で均一に分散、混合して得ら
れる。このときの混合は、液状ゴム、液状樹脂を用いた
湿式混合、粉体のみでの乾式混合のいずれでもよく特に
制限はない。なお本発明において、無機粒子は予めコー
クス中に含有させておくことが必要とされ、他の成分と
同様に上記の混合時に添加、混合すると摩擦材組成物混
合中に無機粒子が脱落し易くなり、無機粒子が脱落する
と効力が劣るという欠点が生じる。The friction material composition according to the present invention is obtained by blending the above components in a predetermined amount, and then uniformly dispersing and mixing with a mixer. The mixing at this time may be any of wet mixing using liquid rubber or liquid resin, and dry mixing using only powder, and is not particularly limited. In the present invention, the inorganic particles are required to be contained in the coke in advance, and the inorganic particles are easily dropped off during the mixing of the friction material composition when added and mixed at the time of the above-mentioned mixing like other components. If the inorganic particles fall off, the efficiency is poor.
【００１３】本発明になる摩擦材組成物を用いて摩擦材
を得るには、金型内に裏金及び摩擦材組成物を挿入及び
充填した後、１４０〜１８０℃、３０〜７０MPaの条件
で加熱加圧成形法で形成し、２００〜３００℃の温度で
加熱処理を行い、冷却後表面を研磨して得られる。なお
必要に応じ、加熱加圧成形前に摩擦材組成物を３０℃以
下の温度で予備成形を行ったり、加熱処理後にさらに４
５０〜８００℃の高温で成形体の表面を焼き付けてもよ
い。In order to obtain a friction material using the friction material composition according to the present invention, a back metal and a friction material composition are inserted and filled in a mold, and then heated at 140 to 180 ° C. and 30 to 70 MPa. It is formed by a pressure molding method, heat-treated at a temperature of 200 to 300 ° C., cooled, and then polished to obtain a surface. If necessary, the friction material composition may be preformed at a temperature of 30 ° C. or less before the heat and pressure molding, or may be further molded after the heat treatment.
The surface of the molded body may be baked at a high temperature of 50 to 800 ° C.
【００１４】[0014]
【実施例】以下本発明の実施例を説明する。 実施例１ 純度８５％の粘結炭９９．９重量％に対し、最大粒径が
２００μｍ及び最小粒径が３０μｍのアルミナ粉末（ロ
ンザジャパン(株)製、商品名ＰＮ−２０２）を０．１重
量％添加し、１２００℃の温度で高温乾留した後、冷却
し、その後最大粒径が３μｍ以下になるまで粉砕してア
ルミナ含有コークスＡを得た。次いでこのアルミナ含有
コークスＡと表１に示す成分を配合し、混合機で均一に
混合して摩擦材組成物を得た。Embodiments of the present invention will be described below. Example 1 0.1% of alumina powder (trade name: PN-202, manufactured by Lonza Japan Co., Ltd.) having a maximum particle size of 200 μm and a minimum particle size of 30 μm was mixed with 99.9% by weight of caking coal having a purity of 85%. % By weight, carbonized at a high temperature of 1200 ° C., cooled, and then pulverized until the maximum particle size became 3 μm or less to obtain coke A containing alumina. Next, the alumina-containing coke A and the components shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition.
【００１５】実施例２ 純度８５％の粘結炭８０重量％に対し、実施例１で用い
た最大粒径が２００μｍ及び最小粒径が３０μｍのアル
ミナ粉末を２０重量％添加し、以下実施例１と同様の工
程を経てアルミナ含有コークスＢを得た。次いでこのア
ルミナ含有コークスＢと表１に示す成分を配合し、混合
機で均一に混合して摩擦材組成物を得た。Example 2 20% by weight of alumina powder having a maximum particle size of 200 μm and a minimum particle size of 30 μm used in Example 1 was added to 80% by weight of caking coal having a purity of 85%. Through the same steps as above, alumina-containing coke B was obtained. Next, the alumina-containing coke B and the components shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition.
【００１６】実施例３〜４ 純度８５％の粘結炭９９．９重量％に対し、最大粒径が
２００μｍ及び最小粒径が３０μｍのジルコニア粉末
（第一稀元素化学工業(株)製、商品名ＢＲ−９０Ｇ）を
０．１重量％添加し、以下実施例１と同様の工程を経て
ジルコニア含有コークスＣを得た。次いでこのジルコニ
ア含有コークスＣと表１に示す成分を配合し、混合機で
均一に混合して摩擦材組成物を得た。Examples 3-4 Zirconia powder having a maximum particle size of 200 μm and a minimum particle size of 30 μm with respect to 99.9% by weight of caking coal having a purity of 85% (commercially available from Daiichi Rare Element Chemicals Co., Ltd. BR-90G) was added in an amount of 0.1% by weight, and zirconia-containing coke C was obtained through the same steps as in Example 1. Next, the zirconia-containing coke C and the components shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition.
【００１７】実施例５ 純度８５％の粘結炭８０重量％に対し、実施例３で用い
た最大粒径が２００μｍ及び最小粒径が３０μｍのジル
コニア粉末を２０重量％添加し、以下実施例１と同様の
工程を経てジルコニア含有コークスＤを得た。次いでこ
のジルコニア含有コークスＤと表１に示す成分を配合
し、混合機で均一に混合して摩擦材組成物を得た。Example 5 20% by weight of zirconia powder having a maximum particle size of 200 μm and a minimum particle size of 30 μm used in Example 3 was added to 80% by weight of caking coal having a purity of 85%. Through the same steps as above, zirconia-containing coke D was obtained. Next, the zirconia-containing coke D and the components shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition.
【００１８】比較例１〜４ 表１に示す成分を配合し、混合機で均一に混合して摩擦
材組成物を得た。Comparative Examples 1 to 4 The components shown in Table 1 were blended and uniformly mixed by a mixer to obtain a friction material composition.
【００１９】次に実施例１〜５及び比較例１〜４で得た
摩擦材組成物を３０℃以下の温度で予備成形し、その後
予備成形体の片側の面に裏金を配置して１６０±１０
℃、５０ＭＰａの条件で加熱加圧成形し、さらに３００
℃で２時間加熱処理を行い、冷却後表面を研磨してディ
スクブレーキパッドを得た。Next, the friction material compositions obtained in Examples 1 to 5 and Comparative Examples 1 to 4 were preformed at a temperature of 30 ° C. or less. 10
℃, 50MPa heat and pressure molding, further 300
Heat treatment was performed at 2 ° C. for 2 hours, and after cooling, the surface was polished to obtain a disc brake pad.
【００２０】[0020]
【表１】 [Table 1]
【００２１】次に本発明になるディスクブレーキパッド
と比較例のディスクブレーキパッドについて、比較試験
を行った。その試験結果を表２に示す。なお試験は、２
０００ccのオートマチック車でＪＡＳＯ、Ｃ４０２−７
９の実車試験を行い、試験中の異音を測定し、音圧が７
５dB以上の発生率及び最大音圧を求め、また効力につい
ては、第２効力試験で１００Km/hで走行時ディスクブレ
ーキに０．６Ｇの荷重をかけ、そのときのμ値で評価
し、フェードはμ値の低下率で評価した。Next, a comparative test was performed on the disc brake pad according to the present invention and the disc brake pad of the comparative example. Table 2 shows the test results. The test was
JASO, C402-7 with 000cc automatic car
9 conducted an actual vehicle test, measured abnormal noise during the test, and
The occurrence rate of 5 dB or more and the maximum sound pressure were obtained. The effect was evaluated by applying a load of 0.6 G to the disc brake during running at 100 km / h in the second effect test and the μ value at that time. Evaluation was made based on the rate of decrease in μ value.
【００２２】[0022]
【表２】 [Table 2]
【００２３】試験の結果、本発明の実施例になる摩擦材
組成物を用いたディスクブレーキパッドは、フェード、
効力、異音発生率及び異音最大音圧に優れることが示さ
れる。これに対し、比較例の摩擦材組成物を用いたディ
スクブレーキパッドは、フェード、効力、異音発生率及
び異音最大音圧のいずれかに欠点があることが示され
る。As a result of the test, the disc brake pad using the friction material composition according to the embodiment of the present invention showed fade,
It is shown to be excellent in efficacy, abnormal sound generation rate and abnormal sound maximum sound pressure. On the other hand, it is shown that the disc brake pad using the friction material composition of the comparative example has a defect in any of fade, effectiveness, abnormal noise generation rate and abnormal noise maximum sound pressure.
【００２４】[0024]
【発明の効果】請求項１記載の摩擦材組成物は、耐フェ
ード特性、効力に優れ、かつ制動時の鳴きや、異音がほ
とんど発生しない摩擦材に適した摩擦材組成物である。
請求項２記載の摩擦材組成物は、請求項１記載の効果を
奏し、さらに強度に優れる摩擦材に適した摩擦材組成物
である。請求項３記載の摩擦材組成物は、請求項１又は
２記載の効果を奏し、特に耐フェード特性と効力に優れ
る摩擦材に適した摩擦材組成物である。請求項４記載の
摩擦材組成物は、請求項１、２又は３記載の効果を奏
し、特に制動時の鳴き、異音発生防止効果に優れる摩擦
材に適した摩擦材組成物である。The friction material composition according to the first aspect is a friction material composition which is excellent in fade resistance and effectiveness, and which is suitable for a friction material which hardly generates squeal or abnormal noise during braking.
The friction material composition described in claim 2 is a friction material composition that exhibits the effects described in claim 1 and that is suitable for a friction material that is excellent in strength. The friction material composition according to the third aspect has the effects described in the first or second aspect and is a friction material composition particularly suitable for a friction material excellent in fade resistance and effectiveness. The friction material composition according to the fourth aspect has the effects described in the first, second, or third aspect, and is a friction material composition suitable for a friction material that is particularly excellent in the effect of preventing noise and abnormal noise during braking.
Claims (4)
対して２〜５０重量％含有してなる摩擦材組成物。1. A friction material composition comprising 2 to 50% by weight of a coke containing inorganic particles based on the friction material composition.
mm以下である請求項１記載の摩擦材組成物。2. The maximum particle size of the inorganic particle-containing coke is 3
The friction material composition according to claim 1, which is not more than mm.
して０．１〜２０重量％含有してなる請求項１又は２記
載の摩擦材組成物。3. The friction material composition according to claim 1, wherein the inorganic particles are contained in an amount of 0.1 to 20% by weight based on the coke containing the inorganic particles.
である請求項１、２又は３記載の摩擦材組成物。4. The friction material composition according to claim 1, wherein the maximum particle size of the inorganic particles is 200 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16474496A JPH108034A (en) | 1996-06-25 | 1996-06-25 | Friction material composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16474496A JPH108034A (en) | 1996-06-25 | 1996-06-25 | Friction material composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH108034A true JPH108034A (en) | 1998-01-13 |
Family
ID=15799093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16474496A Pending JPH108034A (en) | 1996-06-25 | 1996-06-25 | Friction material composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH108034A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004346179A (en) * | 2003-05-22 | 2004-12-09 | Hitachi Chem Co Ltd | Friction material composition and friction material using the same |
| WO2004109138A1 (en) * | 2003-06-04 | 2004-12-16 | Tanaka Seimitsu Kogyo Co., Ltd. | Friction material for transmission |
| CN103343793A (en) * | 2013-06-27 | 2013-10-09 | 武汉市祥龙摩擦材料有限责任公司 | Non-asbestos wet-rolled automobile drum type brake block and manufacturing method thereof |
| KR20170039228A (en) * | 2014-08-01 | 2017-04-10 | 닛신보 브레이크 가부시키가이샤 | Friction material |
| JP2019070422A (en) * | 2017-10-10 | 2019-05-09 | 豊生ブレーキ工業株式会社 | Structure of fastening screw |
-
1996
- 1996-06-25 JP JP16474496A patent/JPH108034A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004346179A (en) * | 2003-05-22 | 2004-12-09 | Hitachi Chem Co Ltd | Friction material composition and friction material using the same |
| WO2004109138A1 (en) * | 2003-06-04 | 2004-12-16 | Tanaka Seimitsu Kogyo Co., Ltd. | Friction material for transmission |
| JPWO2004109138A1 (en) * | 2003-06-04 | 2006-07-20 | 田中精密工業株式会社 | Friction material for transmission |
| CN100371617C (en) * | 2003-06-04 | 2008-02-27 | 田中精密工业株式会社 | Friction material for transmission |
| US7473727B2 (en) | 2003-06-04 | 2009-01-06 | Tanaka Seimitsu Kogyo Co., Ltd. | Friction material for transmission |
| JP4593466B2 (en) * | 2003-06-04 | 2010-12-08 | 田中精密工業株式会社 | Friction material for transmission |
| CN103343793A (en) * | 2013-06-27 | 2013-10-09 | 武汉市祥龙摩擦材料有限责任公司 | Non-asbestos wet-rolled automobile drum type brake block and manufacturing method thereof |
| CN103343793B (en) * | 2013-06-27 | 2015-08-05 | 武汉市祥龙摩擦材料有限责任公司 | Without wet asbestos roll-in automotive drum type braking sheet and production method thereof |
| KR20170039228A (en) * | 2014-08-01 | 2017-04-10 | 닛신보 브레이크 가부시키가이샤 | Friction material |
| JP2019070422A (en) * | 2017-10-10 | 2019-05-09 | 豊生ブレーキ工業株式会社 | Structure of fastening screw |
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