JPS63109131A - Friction material of sintered alloy - Google Patents

Friction material of sintered alloy

Info

Publication number
JPS63109131A
JPS63109131A JP25398586A JP25398586A JPS63109131A JP S63109131 A JPS63109131 A JP S63109131A JP 25398586 A JP25398586 A JP 25398586A JP 25398586 A JP25398586 A JP 25398586A JP S63109131 A JPS63109131 A JP S63109131A
Authority
JP
Japan
Prior art keywords
tin
weight
friction
friction material
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.)
Granted
Application number
JP25398586A
Other languages
Japanese (ja)
Other versions
JPH0765132B2 (en
Inventor
Yoshitaka Tomiyama
冨山 嘉孝
Kojiro Saito
斎藤 浩次郎
Hideo Oyabu
大薮 英雄
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.)
NIPPON FUNMATSU GOKIN KK
Original Assignee
NIPPON FUNMATSU GOKIN 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 NIPPON FUNMATSU GOKIN KK filed Critical NIPPON FUNMATSU GOKIN KK
Priority to JP25398586A priority Critical patent/JPH0765132B2/en
Publication of JPS63109131A publication Critical patent/JPS63109131A/en
Publication of JPH0765132B2 publication Critical patent/JPH0765132B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a friction material of sintered alloy having high friction coefficient in a wide range of speed regions and reduced in wear loss, by specifying a composition consisting of copper, tin or tin and zinc, graphite, sulfide solid lubricants, metal oxides, hard nitrides, and nickel. CONSTITUTION:The friction material of sintered alloy has a composition consisting of, by weight, 10-60% copper, 1-20% of tin or 1-20%, in total, of tin (>=about 20%) and zinc, 5-15% graphite, 0.3-7% of at lest one kind among sulfide solid lubricants such as MoS2, WS2, MnS, etc., 0.5-10% of at least one kind among metal oxides such as Al2O3, SiO2, mullite, etc., 17-50% of at least one kind among hard nitrides such as Si3N4, AlN, BN, TiN, etc., and 5-50% nickel. This friction material has high friction coefficient over a range from low-speed region to high-speed region and causers practically no deterioration in friction coefficient even at the time of rainfall and, moreover, it has superior wear resistance and is reduced in wear loss of opposite materials.

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、ディスクブレーキ
パッド材、クラッチフェーシング材等として有用な摩擦
合金材料に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dry sintered friction material having a high coefficient of friction, and more particularly to brake lining materials for two- and four-wheeled vehicles, industrial vehicles, railway vehicles, etc. This invention relates to friction alloy materials useful as disc brake pad materials, clutch facing materials, etc.

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
するセミメタリックタイプの材料が広く使用される様に
なっている。しかしながら、このセミメタリックタイプ
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。従って、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って来たが、
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、ディ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、ディスクブレ
ーキ機構等の小型化を実現する為には、低速域から高速
域の広い範囲において摩擦係数が高く、摩耗量の少ない
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 Conventionally, resin molds containing asbestos have been used as friction materials for vehicles, especially for two- and four-wheeled vehicles, but in order to meet the current demands for pollution prevention, metal fiber molds have been used. Semi-metallic type materials containing . However, this semi-metallic type friction material also has drawbacks, such as a decrease in the coefficient of friction during rain, and a decrease in the coefficient of friction due to carbonization of the resin under severe conditions such as high loads. Therefore, recently, sintered alloy friction materials have been increasingly used.
Further performance improvements are required in this regard as well. That is,
Automobiles are rapidly becoming smaller and lighter to save energy, and disc brake mechanisms and the like are also required to be smaller. In order to downsize disc brake mechanisms and the like, new sintered alloy friction materials are needed that have a high coefficient of friction and low wear over a wide range from low speeds to high speeds.

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10〜60重量%、(2)錫又は錫と亜
鉛の合計量1〜20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0.5〜1
0重量%、(6)硬質窒化物の少なくとも1種17〜5
0重世%及び(7)ニッケル5〜50重量%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 was made in response to the above-mentioned demands. %, (3) graphite 5-15% by weight
, (4) at least one sulfide solid lubricant 0.3-7
Weight %, (5) at least one metal oxide 0.5-1
0% by weight, (6) at least one hard nitride 17-5
The present invention relates to a sintered alloy friction material characterized by comprising 0% by weight and (7) 5 to 50% by weight of nickel.

本発明によれば、耐摩耗性に優れ、摩擦係数が高く、操
作性に優れ、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, it is possible to obtain a sintered alloy friction material that has excellent wear resistance, a high coefficient of friction, excellent operability, and whose coefficient of friction does not substantially decrease 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す
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 explained below. Since each of these components is mutually related and affects the physical properties of the friction material, it is not necessarily appropriate to discuss the reasons for each limitation individually, but the reasons for the limitations will be shown together.

(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
によって合金化して、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10〜60重量
%に対し錫又は錫及び亜鉛1〜20重量%とする。錫又
は錫及び亜鉛が1重世%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。錫と亜鉛とを組み合わせて用いる場合には錫
と亜鉛の合計量の20重量%程度以上が錫であることが
好ましい。
(1) Copper and (2) Tin or tin and zinc These form the base of alloyed friction materials, and are alloyed by sintering to form a so-called bronze base and increase the strength of the base. Particularly from the viewpoint of strength, the content of tin or tin and zinc is 1 to 20% by weight relative to 10 to 60% by weight of copper. If the content of tin or tin and zinc is less than 1% by weight, sufficient strength will not be obtained to hold graphite and other non-metals, while if it exceeds 20% by weight, the friction material will become brittle, Reduce strength. When tin and zinc are used in combination, it is preferable that tin accounts for about 20% by weight or more of the total amount of tin and zinc.

(3)黒鉛 黒鉛の添加は、主として摩擦係数を安定させる。(3) Graphite The addition of graphite mainly stabilizes the coefficient of friction.

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掘
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。従って適当世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。
That is, in general, the frictional force generated between two surfaces of friction materials that slide against each other is (a) the force required to shear the adhesion that occurs in a part between the two surfaces, and (b) the force that is generated by the hard particles of the opposing material. It is said that this is due to the power of digging. By existing between these two surfaces, graphite controls adhesion that occurs between the two surfaces. Therefore, the presence of appropriate graphite improves and stabilizes the friction coefficient of the friction material, and also improves the wear resistance.

黒鉛の量が5重世%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 effects will not be sufficiently exhibited, whereas if it exceeds 15% by weight, the material strength will decrease and the coefficient of friction will 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、−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 type of sulfide solid lubricant such as molybdenum disulfide, tungsten disulfide, manganese sulfide, etc. Molybdenum disulfide not only has the same effect as graphite, but also prevents so-called "squeal" and under high loads. It also has the remarkable effect of imparting lubricity when used. 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 addition will not be sufficiently exhibited, and if it exceeds 7% by weight, the material strength and friction coefficient will 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
、前記の掘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。
(5) At least one kind of metal oxide such as alumina, silica, mullite, etc. Alumina, etc., has the above-mentioned excavation effect when used in the range of 0.5 to 10% by weight, and also causes damage to the mating sliding surface due to frictional heat. By removing the generated oxide film, adhesion between friction materials is stably generated, and stable frictional force is exerted.

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。
If the amount used is less than 0.5% by weight, the above-mentioned effects will not be fully exhibited, while if it exceeds 10% by weight, there is a tendency for the mating sliding surface to become rough.

(6) S i 3 N 4 、A Q N SB N
 ST t N等の硬質窒化物の少なくとも1種 これ等は特に低速域での摩擦係数の改善に寄与する。こ
れ等の量が17重量%未満では、摩擦係数の向上が充分
に行なわれ得ず、一方50重量%を上回る場合には、素
地強度が低下するとともに、摩耗量がかえって増大する
(6) S i 3 N 4 , A Q N SB N
At least one hard nitride such as ST t N contributes to improving the coefficient of friction, especially in the low speed range. If the amount is less than 17% by weight, the coefficient of friction cannot be sufficiently improved, while if it exceeds 50% by weight, the strength of the base material decreases and the amount of wear increases.

(7)ニッケル ニッケルを5〜50重全%含有させることにより、高速
時の摩擦係数の低下を防止する効果が奏され、高速域に
おいて高い安定した摩擦係数が維持される。ニッケル5
重世%未満では上記の効果は充分に発揮されず、50重
量%を上回る場合は、焼結し難くなり材料劣化をまねく
傾向がある。
(7) Nickel By containing nickel in an amount of 5 to 50% by weight, the effect of preventing a decrease in the coefficient of friction at high speeds is achieved, and a high and stable coefficient of friction is maintained in the high speed range. nickel 5
If it is less than 50% by weight, the above effect will not be fully exhibited, and if it exceeds 50% by weight, it will be difficult to sinter and tend to cause material deterioration.

本発明材料を使用して所望の製品、例えばディスクブレ
ーキ用部品を製造するには、常法に従って各原料粉末を
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
800〜950℃程度で焼成すれば良い。
In order to manufacture a desired product, such as disc brake parts, using the material of the present invention, each raw material powder is blended according to a conventional method, press-molded into a predetermined shape, and then placed in a neutral or reducing atmosphere. It may be fired at a temperature of about 800 to 950°C under a pressure of about 3 to 7 kg/cm2.

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、低速域から高速域
の広い速度域において0.5〜0.8程度にも達する。
Effects of the Invention The friction coefficient of the sintered alloy friction material according to the present invention is higher than that of conventional products (
0.3 to 0.5), and reaches as high as 0.5 to 0.8 in a wide speed range from low speed to high speed.

従って、本発明材料を例えば二輪及び四輪自動車用のデ
ィスクブレーキのパッドとして使用する場合には、(イ
)ブレーキ性能の向上、(ロ)パッド及びディスクの耐
摩耗性の向上、(ハ)ブレーキ機構の小型化、(ニ)パ
ッドのインシュレーターの簡素化等の効果が奏される。
Therefore, when the material of the present invention is used, for example, as a pad for disc brakes for two-wheeled and four-wheeled vehicles, it is necessary to (a) improve brake performance, (b) improve wear resistance of pads and discs, and (c) brake Effects such as miniaturization of the mechanism and (d) simplification of the 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 The features of the present invention will be further clarified through Examples and Comparative Examples.

実施例1〜4及び比較例1〜2 第1表に示す割合の各原料と残余鋼とからなる配合物1
00重量部を4 ton/cm2の圧力で成形した後、
成形物をCuメッキした鋼板上に載せ、N2雰囲気中5
 kg/ ff1102の荷重をかけて850°Cで6
0分間焼成した。
Examples 1 to 4 and Comparative Examples 1 to 2 Compound 1 consisting of each raw material and residual steel in the proportions shown in Table 1
After molding 00 parts by weight at a pressure of 4 ton/cm2,
The molded product was placed on a Cu-plated steel plate and heated in an N2 atmosphere for 5 minutes.
6 at 850°C with a load of kg/ff1102
Baked for 0 minutes.

第   1   表 かくして得た焼成品をパッド材として慣性力1、・25
kg−m−8ec2、接触面積20Cm2、面圧20k
g/cI112として、ブレーキ初速度50.100又
は150 km/ hrの各条件下に相手ディスク材(
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。
Table 1 Using the thus obtained fired product as a pad material, the inertia force is 1.25
kg-m-8ec2, contact area 20cm2, surface pressure 20k
g/cI112, the mating disc material (
13 chrome steel) repeatedly 300 times at 60 second intervals.

平均摩擦係数並びにパッド材及びディスク材の摩耗量を
第2表に示す。
Table 2 shows the average coefficient of friction and the amount of wear of the pad material and disk material.

第2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、いずれの速度域においても高い摩擦係
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 Table 2, the sintered alloy friction material according to the present invention has a high coefficient of friction in all speed ranges, has excellent wear resistance, and has a small amount of wear on the mating material. .

(以 上)(that's all)

Claims (1)

【特許請求の範囲】 [1](1)銅 10〜60重量%、 (2)錫又は錫と亜鉛の合計量 1〜20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
%、 (6)硬質窒化物の少なくとも1種 17〜50重量%
、及び (7)ニッケル 5〜50重量% からなることを特徴とする焼結合金摩擦材料。
[Claims] [1] (1) Copper 10-60% by weight, (2) Tin or the total amount of tin and zinc 1-20% by weight, (3) Graphite 5-15% by weight, (4) Sulfide At least one solid lubricant 0.3-7
(5) At least one metal oxide 0.5-10% by weight, (6) At least one hard nitride 17-50% by weight
, and (7) a sintered alloy friction material comprising 5 to 50% by weight of nickel.
JP25398586A 1986-10-24 1986-10-24 Sintered alloy friction material Expired - Fee Related JPH0765132B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25398586A JPH0765132B2 (en) 1986-10-24 1986-10-24 Sintered alloy friction material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25398586A JPH0765132B2 (en) 1986-10-24 1986-10-24 Sintered alloy friction material

Publications (2)

Publication Number Publication Date
JPS63109131A true JPS63109131A (en) 1988-05-13
JPH0765132B2 JPH0765132B2 (en) 1995-07-12

Family

ID=17258666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25398586A Expired - Fee Related JPH0765132B2 (en) 1986-10-24 1986-10-24 Sintered alloy friction material

Country Status (1)

Country Link
JP (1) JPH0765132B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02159334A (en) * 1988-12-14 1990-06-19 Toshiba Tungaloy Co Ltd Friction material for brake
JPH05179232A (en) * 1991-12-26 1993-07-20 Toshiba Tungaloy Co Ltd Sintered metallic friction material for brake
EP0709476A1 (en) 1994-10-19 1996-05-01 Sumitomo Electric Industries, Ltd. Sintered friction material, composite copper alloy powder used therefor and manufacturing method thereof
US6494469B1 (en) 1999-10-12 2002-12-17 Takano Co., Ltd. Rolling walker
AT411765B (en) * 1991-03-20 2004-05-25 Hoerbiger & Co FRICTION MATERIAL PRODUCED BY SINTER
WO2011071033A1 (en) * 2009-12-07 2011-06-16 株式会社ダイヤメット Sintered sliding member
CN102676871A (en) * 2011-03-09 2012-09-19 北京古特莱航空科技发展有限公司 Sintered friction material for brake of wind power generation equipment and its preparation method
WO2012133513A1 (en) 2011-03-30 2012-10-04 住友金属工業株式会社 Sintered friction material for high-speed rail
WO2018185944A1 (en) 2017-04-07 2018-10-11 新日鐵住金株式会社 Sintered friction material

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02159334A (en) * 1988-12-14 1990-06-19 Toshiba Tungaloy Co Ltd Friction material for brake
AT411765B (en) * 1991-03-20 2004-05-25 Hoerbiger & Co FRICTION MATERIAL PRODUCED BY SINTER
JPH05179232A (en) * 1991-12-26 1993-07-20 Toshiba Tungaloy Co Ltd Sintered metallic friction material for brake
EP0709476A1 (en) 1994-10-19 1996-05-01 Sumitomo Electric Industries, Ltd. Sintered friction material, composite copper alloy powder used therefor and manufacturing method thereof
US5824923A (en) * 1994-10-19 1998-10-20 Sumitomo Electric Industries, Ltd. Sintered friction material, composite copper alloy powder used therefor and manufacturing method thereof
US5972070A (en) * 1994-10-19 1999-10-26 Sumitomo Electric Industries, Ltd. Sintered friction material, composite copper alloy powder used therefor and manufacturing method thereof
US6494469B1 (en) 1999-10-12 2002-12-17 Takano Co., Ltd. Rolling walker
US8709124B2 (en) 2009-12-07 2014-04-29 Diamet Corporation Sintered sliding member
JP5337884B2 (en) * 2009-12-07 2013-11-06 株式会社ダイヤメット Sintered sliding member
WO2011071033A1 (en) * 2009-12-07 2011-06-16 株式会社ダイヤメット Sintered sliding member
CN102676871A (en) * 2011-03-09 2012-09-19 北京古特莱航空科技发展有限公司 Sintered friction material for brake of wind power generation equipment and its preparation method
WO2012133513A1 (en) 2011-03-30 2012-10-04 住友金属工業株式会社 Sintered friction material for high-speed rail
KR20130143715A (en) 2011-03-30 2013-12-31 신닛테츠스미킨 카부시키카이샤 Sintered friction material for high-speed rail
WO2018185944A1 (en) 2017-04-07 2018-10-11 新日鐵住金株式会社 Sintered friction material
KR20190132501A (en) 2017-04-07 2019-11-27 닛폰세이테츠 가부시키가이샤 Sintered Friction Material
US11534829B2 (en) 2017-04-07 2022-12-27 Nippon Steel Corporation Sintered friction material

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