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JPH0645837B2 - Sintered alloy friction material - Google Patents
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JPH0645837B2 - Sintered alloy friction material - Google Patents

Sintered alloy friction material

Info

Publication number
JPH0645837B2
JPH0645837B2 JP61102390A JP10239086A JPH0645837B2 JP H0645837 B2 JPH0645837 B2 JP H0645837B2 JP 61102390 A JP61102390 A JP 61102390A JP 10239086 A JP10239086 A JP 10239086A JP H0645837 B2 JPH0645837 B2 JP H0645837B2
Authority
JP
Japan
Prior art keywords
weight
friction
friction material
tin
sintered alloy
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 - Fee Related
Application number
JP61102390A
Other languages
Japanese (ja)
Other versions
JPS62260030A (en
Inventor
嘉孝 冨山
浩次郎 斎藤
英雄 大藪
Original Assignee
日本粉末合金株式会社
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 日本粉末合金株式会社 filed Critical 日本粉末合金株式会社
Priority to JP61102390A priority Critical patent/JPH0645837B2/en
Publication of JPS62260030A publication Critical patent/JPS62260030A/en
Publication of JPH0645837B2 publication Critical patent/JPH0645837B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、高摩擦係数を有する乾式焼結摩擦材料に関
し、更に詳しくは、二輪及び四輪自動車、産業用車両、
鉄道用車両等のブレーキライニング材、デイスクブレー
キパツド材、クラツチフエーシング材等として有用な摩
擦合金材料に関する。
Description: TECHNICAL FIELD The present invention relates to a dry sintered friction material having a high coefficient of friction, and more specifically, a two-wheel and four-wheel automobile, an industrial vehicle,
The present invention relates to a friction alloy material useful as a brake lining material for railway vehicles, a disc brake pad material, a clutch facing material, and the like.

従来の技術及びその問題点 従来車両用特に二輪乃至四輪自動車用の摩擦材料として
は、石綿を含有するレジンモールドが使用されて来た
が、現今の公害防止の要望に対処すべく、金属繊維を含
有するセミメタリツクタイプの材料が広く使用される様
になつている。しかしながら、このセミメタリツクタイ
プの摩擦材料にも、降雨時に摩擦係数が低下する、高負
荷等の苛酷な条件下ではレジンの炭化によりやはり摩擦
係数が低下する等の欠点がある。従つて、最近では焼結
合金系の摩擦材料が次第に使用される様になつて来た
が、これについても更に性能向上が求められている。即
ち、自動車においては、省エネルギーの為の小型化及び
軽量化が急速に進行しており、デイスクブレーキ機構等
に対しても小型化が要求されている。そして、デイスク
ブレーキ機構等を小型化すると、パツドは高面圧、高負
荷条件下にさらされる事になる。この高面圧、高負荷条
件(高温域500℃〜800℃)下においては、従来の
焼結摩擦材料では摩擦係数の低下傾向が認められる。従
って、デイスクブレーキ機構等の小型化を実現する為に
は、高面圧、高負荷条件下においても、摩擦係数が高
く、磨耗量の少ない新しい焼結合金摩擦材料が必要とな
っている。
Conventional technology and its problems Resin molds containing asbestos have been used as friction materials for conventional vehicles, especially for two-wheeled and four-wheeled vehicles, but metal fibers have been used to meet the current demands for pollution prevention. A semi-metalic type material containing is widely used. However, this semi-metalic type friction material also has drawbacks such as a reduction in friction coefficient during rainfall, and a reduction in friction coefficient due to carbonization of the resin under severe conditions such as high load. Therefore, recently, sintered alloy-based friction materials have come to be used gradually, and further improvement in performance is also required for these. That is, in automobiles, miniaturization and weight reduction for energy saving are rapidly progressing, and miniaturization is also required for a disc brake mechanism and the like. If the disc brake mechanism is downsized, the pad will be exposed to high surface pressure and high load. Under these high surface pressure and high load conditions (high temperature range 500 ° C. to 800 ° C.), the conventional sintered friction material has a tendency of decreasing the friction coefficient. Therefore, in order to realize the downsizing of the disc brake mechanism and the like, a new sintered alloy friction material having a high friction coefficient and a small amount of wear is required even under high surface pressure and high load conditions.

これに対し、本発明は、銅系の焼結合金摩擦材料に、特
定の硬質窒化物を大量に配合することにより、これらの
課題を解決し、高面圧、高負荷条件下においても高い摩
擦係数及び良好な耐磨耗性を有する摩擦材料を提供する
ものである。
On the other hand, the present invention solves these problems by blending a large amount of a specific hard nitride in a copper-based sintered alloy friction material, and high friction even under high surface pressure and high load conditions. A friction material having a coefficient and good wear resistance is provided.

問題点を解決するための手段 本発明は、上記の如き要求に応えるべくなされたもので
あり、(1)銅30〜70重量%、(2)錫又は錫と亜
鉛の合計量4〜20重量%、(3)黒鉛5〜15重量
%、(4)硫化物固体潤滑剤の少なくとも1種0.3〜
7重量%、(5)金属酸化物の少なくとも1種0.5〜
10重量%、及び(6)Si、AlN及びTiN
からなる群から選ばれる硬質窒化物の少なくとも1種1
7重量%以上21重量%未満からなることを特徴とする
焼結合金摩擦材料に係る。
Means for Solving the Problems The present invention has been made to meet the above demands, and (1) 30 to 70% by weight of copper, (2) tin or a total amount of tin and zinc of 4 to 20% by weight. %, (3) graphite 5 to 15% by weight, (4) at least one kind of sulfide solid lubricant 0.3 to
7 wt%, (5) at least one kind of metal oxide 0.5 to
10% by weight, and (6) Si 3 N 4 , AlN and TiN
At least one hard nitride selected from the group consisting of 1
The present invention relates to a sintered alloy friction material comprising 7% by weight or more and less than 21% by weight.

本発明によれば、高面圧、高負荷条件下において、摩擦
係数が高く、耐磨耗性及び操作性に優れており、また、
降雨時にも摩擦係数の低下を実質的に生じない焼結合金
摩擦材料が得られる。
According to the present invention, under high surface pressure and high load conditions, the friction coefficient is high, and the wear resistance and the operability are excellent, and
It is possible to obtain a sintered alloy friction material that does not substantially decrease the coefficient of friction even when it rains.

以下本発明の焼結合金摩擦材料の各成分について説明す
る。これ等の各成分は、相互に関連しつつ摩擦材料とし
ての物性に影響するので、夫々の限定理由を個別に論ず
ることは必ずしも妥当ではないが、一応の限定理由を併
せて示す。
Each component of the sintered alloy friction material of the present invention will be described below. Since each of these components affects the physical properties of the friction material while being related to each other, it is not always appropriate to discuss the respective limiting reasons individually, but the tentative limiting reasons are also shown.

(1)銅及び(2)錫又は錫と亜鉛 これ等は、合金摩擦材料の素地をなすものであり、焼結
によつて合金化して、いわゆる青銅地を形成し、素地の
強度を高める。特に強度の観点から、銅30〜70重量
%に対し錫又は錫及び亜鉛4〜20重量%とする。錫又
は錫及び亜鉛が4重量%未満の場合には、黒鉛その他の
非金属を保持するに充分な強度が得られず、一方20重
量%を上回る場合には、摩擦材料を脆化させ、強度を低
下させる。
(1) Copper and (2) Tin or tin and zinc These form the basis of the alloy friction material and are alloyed by sintering to form a so-called bronze basis, which enhances the strength of the basis. Particularly, from the viewpoint of strength, tin or tin and zinc are 4 to 20% by weight with respect to 30 to 70% by weight of copper. When tin or tin and zinc is less than 4% by weight, sufficient strength to retain graphite and other non-metals cannot be obtained, while when it is more than 20% by weight, the friction material is embrittled and strength is increased. Lower.

(3)黒鉛 黒鉛の添加は、主として摩擦係数を安定させる。即ち、
一般に相互に摺動する摩擦材料の二面間に発生する摩擦
力は、(イ)二面間の一部に生ずる凝着を剪断するに要
する力、及び(ロ)硬質粒子による相手材への堀りおこ
し力によるといわれている。黒鉛は、この様な二面間に
存在することにより、二面間に生ずる凝着を制御する。
従つて適当量の黒鉛の存在により、摩擦材料の摩擦係数
が向上するとともに安定化され、併せて耐摩耗性も向上
する。
(3) Graphite The addition of graphite mainly stabilizes the friction coefficient. That is,
Generally, the frictional force generated between two surfaces of friction materials that slide with each other is (a) the force required to shear the adhesion generated in a part between the two surfaces, and (b) the hard particles exert a force on the mating material. It is said that it is due to the power of digging. The graphite, which exists between the two surfaces, controls the adhesion that occurs between the two surfaces.
Therefore, the presence of an appropriate amount of graphite improves and stabilizes the friction coefficient of the friction material, and also improves the wear resistance.

黒鉛の量が5重量%未満では、上記の効果が十分に奏さ
れないのに対し、15重量%を上回る場合には、材料強
度が低下するとともに摩擦係数が低下する。
If the amount of graphite is less than 5% by weight, the above effect is not sufficiently exhibited, whereas if it exceeds 15% by weight, the material strength and friction coefficient decrease.

(4)二硫化モリブデン、二硫化タングステン、硫化マ
ンガン等の硫化物固体潤滑剤の少なくとも1種 二硫化モリブデン等は、黒鉛と同様の効果を奏するのみ
ならず、いわゆる“鳴き”の防止及び高荷重時の潤滑性
付与という顕著な効果をも発揮する。二硫化モリブデン
等の使用量は、0.3〜7重量%とする。これ等の使用
量が、0.3%未満の場合には、添加の効果が十分に発
揮されず、一方7重量%を上回る場合には、材料強度及
び摩擦係数が低下する。
(4) At least one kind of sulfide solid lubricant such as molybdenum disulfide, tungsten disulfide and manganese sulfide Molybdenum disulfide and the like not only have the same effect as graphite, but also prevent so-called "squeaking" and high load. It also exerts a remarkable effect of imparting lubricity at the time. The amount of molybdenum disulfide used is 0.3 to 7% by weight. If the amount used is less than 0.3%, the effect of the addition is not sufficiently exerted, while if it exceeds 7% by weight, the material strength and the friction coefficient decrease.

(5)アルミナ、シリカ、ムライト等の金属酸化物の少
なくとも1種 アルミナ等は、0.5〜10重量%の使用範囲におい
て、前記の堀りおこし効果を奏するとともに、摩擦熱に
より相手側摺動面に生成する酸化皮膜を除去することに
より摩擦材料間の凝着を安定的に発生させて、安定的な
摩擦力を発揮させる。使用量が0.5重量%未満の場合
には、上記の効果が十分に発揮されず、一方10重量%
を上回る場合には、相手側摺動面を荒損させる傾向があ
る。
(5) At least one kind of metal oxide such as alumina, silica and mullite Alumina and the like have the above-mentioned digging effect in the usage range of 0.5 to 10% by weight and slide on the other side by friction heat. By removing the oxide film formed on the surface, the adhesion between the friction materials is stably generated and a stable friction force is exerted. If the amount used is less than 0.5% by weight, the above effects are not sufficiently exerted, while 10% by weight
If it exceeds, the mating sliding surface tends to be damaged.

(6)Si、AlN及びTiNからなる群から選
ばれる硬質窒化物の少なくとも1種 これ等は、17重量%以上21重量%未満の範囲におい
て、摩擦係数の改善に寄与し、本発明材料は、高面圧、
高負荷条件下でも高い摩擦係数を維持する事ができる。
また、高負荷条件下では、パツドは高温にさらされ、ブ
レーキ熱(摩擦面での発熱)はキャリパーのシリンダー
へ移動し、ベーパーロツクの原因になる。これらの硬質
窒化物は、熱伝導性が低いので、これらの硬質窒化物を
大量に含有する本発明材料によれば、ブレーキ熱のキャ
リパーへの移動を効率よく防ぐことができ、結果とし
て、パツドのインシユレレーターを簡素化することがで
きる。
(6) At least one hard nitride selected from the group consisting of Si 3 N 4 , AlN and TiN. These contribute to the improvement of the friction coefficient in the range of 17% by weight or more and less than 21% by weight, and the present invention The material is high surface pressure,
A high friction coefficient can be maintained even under high load conditions.
Further, under a high load condition, the pad is exposed to a high temperature, and the brake heat (heat generation on the friction surface) moves to the caliper cylinder, causing vapor lock. Since these hard nitrides have low thermal conductivity, the material of the present invention containing a large amount of these hard nitrides can efficiently prevent the transfer of brake heat to the caliper, and as a result, the pad. The insulator of can be simplified.

本発明材料を使用して所望の製品、例えばデイスクブレ
ーキ用部品を製造するには、常法に従つて各原料粉末を
配合し、これを所定の形状にプレス成形した後、中性又
は還元性雰囲気中3〜7kg/cm2程度の加圧下に730
〜880℃程度で焼成すれば良い。
In order to produce a desired product, for example, a component for a disc brake, using the material of the present invention, each raw material powder is blended according to a conventional method, and this is pressed into a predetermined shape, and then neutralized or reduced. 730 under pressure of 3 to 7 kg / cm 2 in the atmosphere
It suffices to fire at about 880 ° C.

発明の効果 本発明による焼結合金摩擦材料の摩擦係数は、従来品
(0.3〜0.5程度)に比して高く、0.5〜0.8
程度にも達する。従つて、本発明材料を例えば二輪及び
四輪自動車用のデイスクブレーキのパツドとして使用す
る場合には、(イ)ブレーキ性能の向上、(ロ)パツド
及びデイスクの耐摩耗性の向上(ハ)ブレーキ機構の小
型化、(ニ)パツドのインシユレーターの簡素化等の効
果が奏される。
Effect of the Invention The friction coefficient of the sintered alloy friction material according to the present invention is higher than that of the conventional product (about 0.3 to 0.5) and is 0.5 to 0.8.
It reaches the level. Therefore, when the material of the present invention is used as a disc brake pad for two-wheeled and four-wheeled vehicles, for example, (a) improved brake performance, (b) improved pad and disc abrasion resistance (c) brake Effects such as downsizing of the mechanism and simplification of the (d) pad insulator are achieved.

実施例 以下、実施例及び比較例により本発明の特徴とするとこ
ろをより一層明らかにする。
EXAMPLES Hereinafter, the features of the present invention will be further clarified by Examples and Comparative Examples.

実施例1〜3及び比較例1〜3 第1表に示す割合の各原料と残余銅とからなる配合物1
00重量部を4ton/cm2の圧力で成形した後、成形物を
Cuメツキした鋼板上に載せ、N雰囲気中5kg/mm2
の荷重をかけて780℃で60分間焼成した。
Examples 1 to 3 and Comparative Examples 1 to 3 Blend 1 composed of the respective raw materials in the proportions shown in Table 1 and residual copper
After molding 100 parts by weight at a pressure of 4 ton / cm 2 , the molded product is placed on a Cu-plated steel plate and 5 kg / mm 2 in an N 2 atmosphere.
Was applied and the mixture was baked at 780 ° C. for 60 minutes.

かくして得た焼成品をパツド材として慣性力1.25kg
・m・sec2、ブレーキ初速度50km/hr、130km/hr
又は200km/hr、接触面積20cm2、面圧20kgf/cm
2、50kgf/cm2又は80kgf/cm2の条件下に相手デイ
スク材(13クローム鋼)に対し60秒間隔で300回
繰返し制動接触させた。
The fired product thus obtained is used as a pad material and has an inertia force of 1.25 kg.
・ M ・ sec 2 , brake initial speed 50km / hr, 130km / hr
Or 200km / hr, contact area 20cm 2 , surface pressure 20kgf / cm
Under a condition of 2 , 50 kgf / cm 2 or 80 kgf / cm 2 , the mating disc material (13 chrome steel) was repeatedly brake contacted 300 times at intervals of 60 seconds.

各条件下における平均摩擦係数並びに各パツド材につい
ての一連の各ブレーキ初速度条件下における試験(第2
表)又は各面圧条件下における試験(第3表)を終了し
た後に測定したデイスク材の磨耗量を第2表(面圧20
kgf/cm2の場合)及び第3表(ブレーキ初速度130km
/hrの場合)に示す。
The average coefficient of friction under each condition and a series of tests for each pad material under each brake initial velocity condition (second
Table) or the wear amount of the disk material measured after the test under each surface pressure condition (Table 3) is shown in Table 2 (surface pressure 20).
kgf / cm 2 ) and Table 3 (brake initial speed 130km)
/ Hr)).

第2表及び第3表に示す結果から明らかな如く、本発明
による焼結合金摩擦材料は、高い摩擦係数を有してお
り、耐摩耗性に優れ、且つ相手材の摩耗量も少ない。
As is clear from the results shown in Tables 2 and 3, the sintered alloy friction material according to the present invention has a high friction coefficient, excellent wear resistance, and a small amount of wear of the mating material.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】(1)銅30〜70重量%、 (2)錫又は錫と亜鉛の合計量4〜20重量%、 (3)黒鉛5〜15重量%、 (4)硫化物固体潤滑剤の少なくとも1種0.3〜7重
量%、 (5)金属酸化物の少なくとも1種0.5〜10重量
%、及び (6)Si、AN及びTiNからなる群から選
ばれる硬質窒化物の少なくとも1種17重量%以上21
重量%未満 からなることを特徴とする焼結合金摩擦材料。
(1) 30 to 70% by weight of copper, (2) 4 to 20% by weight of tin or a total amount of tin and zinc, (3) 5 to 15% by weight of graphite, (4) solid sulfide lubricant 0.3 to 7% by weight of at least one kind, (5) at least 0.5 to 10% by weight of at least one kind of metal oxide, and (6) hard nitriding selected from the group consisting of Si 3 N 4 , AN and TiN. At least one kind of product 17% by weight or more 21
A sintered alloy friction material characterized by comprising less than wt%.
JP61102390A 1986-05-01 1986-05-01 Sintered alloy friction material Expired - Fee Related JPH0645837B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61102390A JPH0645837B2 (en) 1986-05-01 1986-05-01 Sintered alloy friction material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61102390A JPH0645837B2 (en) 1986-05-01 1986-05-01 Sintered alloy friction material

Publications (2)

Publication Number Publication Date
JPS62260030A JPS62260030A (en) 1987-11-12
JPH0645837B2 true JPH0645837B2 (en) 1994-06-15

Family

ID=14326121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61102390A Expired - Fee Related JPH0645837B2 (en) 1986-05-01 1986-05-01 Sintered alloy friction material

Country Status (1)

Country Link
JP (1) JPH0645837B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09112609A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for crane motor
JPH09112610A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for tilting motor
JPH09112611A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for conveyor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0636357B2 (en) * 1987-10-15 1994-05-11 松下電工株式会社 Light emitting electron tube lighting device
JPH01136944A (en) * 1987-11-20 1989-05-30 Isamu Kikuchi Sintered metallic material
AT411765B (en) * 1991-03-20 2004-05-25 Hoerbiger & Co FRICTION MATERIAL PRODUCED BY SINTER
CN115074574B (en) * 2022-04-18 2023-06-02 杭州前进齿轮箱集团股份有限公司 High heat-resistant wet copper-based friction plate and manufacturing method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5291716A (en) * 1976-01-29 1977-08-02 Mitsubishi Metal Corp Wear resisting sintered alloy of cu system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09112609A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for crane motor
JPH09112610A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for tilting motor
JPH09112611A (en) * 1995-10-20 1997-05-02 Tokyo Yogyo Co Ltd Brake lining material for conveyor

Also Published As

Publication number Publication date
JPS62260030A (en) 1987-11-12

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