JPH023050B2 - - Google Patents
Info
- Publication number
- JPH023050B2 JPH023050B2 JP56171630A JP17163081A JPH023050B2 JP H023050 B2 JPH023050 B2 JP H023050B2 JP 56171630 A JP56171630 A JP 56171630A JP 17163081 A JP17163081 A JP 17163081A JP H023050 B2 JPH023050 B2 JP H023050B2
- Authority
- JP
- Japan
- Prior art keywords
- iron
- friction
- fibers
- hardness
- fiber
- 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 - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 44
- 239000000835 fiber Substances 0.000 claims description 40
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 239000002783 friction material Substances 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 19
- 238000002156 mixing Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000010425 asbestos Substances 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
【発明の詳細な説明】
この発明は車輛、機械等の摩擦材に関するもの
で、特に車輛のブレーキシステムに使用されるブ
レーキパツド、およびブレーキライニング（以下
単に摩擦材という）に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to friction materials for vehicles, machines, etc., and particularly to brake pads and brake linings (hereinafter simply referred to as friction materials) used in vehicle brake systems.
従来この種の摩擦材は石綿繊維を基材として製
造されて来た、その組成は前記石綿繊維と熱硬化
性フエノール樹脂、カシユーダスト、硫酸バリユ
ウム、粉末グラフアイト、あるいはその他に無機
充填材などを配合してつくられていたものが主で
あつた。しかしこの石綿繊維が性能面で耐久性が
今一歩劣ると云う欠点を有し、又石綿は人体に有
害であるので、製造時の作業環境を悪化させる欠
点をも有するものであつた。 Conventionally, this type of friction material has been manufactured using asbestos fiber as a base material, and its composition is a combination of the asbestos fiber, thermosetting phenolic resin, cashew dust, barium sulfate, powdered graphite, or other inorganic fillers. The things that were created were the main ones. However, this asbestos fiber has the disadvantage that its durability is inferior in terms of performance, and since asbestos is harmful to the human body, it also has the disadvantage of deteriorating the working environment during manufacturing.
そこで近年に至つて金属繊維、特に鉄系繊維を
基材とする摩擦材が提供され前記欠点は解消され
た。しかしこの摩擦材は鉄系繊維を使用している
ので鋼性が強く、単繊維の硬度もMHV200〜270
と高い。これが起因して相手材である回転デイス
クとの当接面において、可動時押圧摺動されて回
転デイスクに攻撃をあたえてキズをつけるという
現象を生じしめた、この現象が摩擦材の震動、振
れ、ひいてはローターの寿命を低下させる原因の
一番大きい要因となる欠点を有していた。 Therefore, in recent years, friction materials based on metal fibers, particularly iron-based fibers have been provided, and the above-mentioned drawbacks have been solved. However, since this friction material uses iron-based fibers, it has strong steel properties, and the hardness of single fibers is MHV200-270.
That's high. This caused a phenomenon in which the contact surface with the rotating disk, which is the mating material, was pressed and slid during movement, attacking the rotating disk and causing scratches.This phenomenon caused the friction material to vibrate and shake. In addition, it had a drawback that was the biggest factor in reducing the lifespan of the rotor.
本発明は前記鉄系繊維がもつ相手材への攻撃性
を解消するために窒素ガス雰囲気中で前記鉄系繊
維基材を熱処理をほどこすことによつて硬度を低
下させた鉄系繊維基材を使用することを特徴とし
た摩擦材パツドアツセンブリーを提供することを
目的としている。 The present invention provides an iron-based fiber base material whose hardness is reduced by subjecting the iron-based fiber base material to heat treatment in a nitrogen gas atmosphere in order to eliminate the aggressiveness of the iron-based fibers toward mating materials. The purpose of this invention is to provide a friction material pad assembly characterized by the use of.
鉄系繊維について、相手材に対して攻撃性をあ
たえない望ましい硬度とはMHV50〜130の範囲
である。これ以上の硬度を有する鉄系繊維を使用
した摩擦材は摩耗が少なく攻撃性が大きい、又前
記範囲以下の硬度であると摩耗が大きくなりすぎ
て耐久性が劣ると云う試験結果であつた。これ等
の因果を追求し、最も良い硬度を備えた鉄系繊維
を得るためグレード、被覆処理、表面処理、熱処
理を繰り返した結果、鉄系繊維の基材を窒素ガス
雰囲気中で熱処理することが最も良い硬度を得る
方法であることを見出した。 For iron-based fibers, the desirable hardness that does not cause aggression to the mating material is in the range of MHV50 to 130. Test results showed that friction materials using iron-based fibers with a hardness higher than this range had little wear and were highly aggressive, while those with hardness below this range caused too much wear and poor durability. In pursuit of these causes and effects, and in order to obtain iron-based fibers with the best hardness, we repeatedly graded, coated, surface-treated, and heat-treated the iron-based fibers. As a result, we were able to heat-treat the iron-based fiber base material in a nitrogen gas atmosphere. It was found that this is the method to obtain the best hardness.
かかる前記熱処理された鉄系繊維の基材は、今
まで公知であつたセミメタ系パツドの製造方法中
の摩擦材の配合、及び製造方法も一般的に全て使
用出来るものである。その代表的例は各配合剤の
秤量及び配合、各配合剤の混合、予備成形、加圧
加熱成形、及び摩擦材の熱処理の各工程を追つて
製造されるものである。配合の順序は先づ鉄系繊
維基材、次に結合剤、以下摩擦調整剤の順で配合
されるのが一般的である。 The above-mentioned heat-treated iron-based fiber base material can generally be used in all conventional methods for producing semi-meta-based pads, including the formulation of friction materials and methods for producing them. A typical example is one that is manufactured by following the steps of weighing and blending each compounding agent, mixing each compounding agent, preforming, pressurizing and heating molding, and heat treatment of the friction material. Generally, the order of blending is first the iron-based fiber base material, then the binder, and then the friction modifier.
以下本発明における実施態様を詳述する。 Embodiments of the present invention will be described in detail below.
まづこの発明でいう鉄系繊維とは一般にスチー
ルフアイバーと呼ばれ、繊維径20〜80ミクロンの
範囲が好ましい最も良いのは50〜70ミクロンであ
る。又、繊維長については２〜６mmのものが使用
出来るが、３〜４mmの長さのものが最も良い。こ
の基材を焼成炉で窒素ガス雰囲気中で熱処理する
ものである。 First, the iron-based fiber referred to in this invention is generally called steel fiber, and the fiber diameter is preferably in the range of 20 to 80 microns, and the best is 50 to 70 microns. Regarding the fiber length, fibers with a length of 2 to 6 mm can be used, but fibers with a length of 3 to 4 mm are best. This base material is heat-treated in a nitrogen gas atmosphere in a firing furnace.
次いで結合剤について説明するこの結合剤は熱
硬化性樹脂であり、最も好ましいのはフエノール
樹脂であり用途に応じてフエノール樹脂を変性し
て使用すればなお良い。この結合剤の配合割合は
重量で全摩擦材料100重量部中６〜12重量部で好
ましくは８〜９重量部である。 Next, the binder will be explained. The binder is a thermosetting resin, most preferably a phenolic resin, and it is even better if the phenolic resin is modified depending on the purpose. The blending ratio of this binder is 6 to 12 parts by weight, preferably 8 to 9 parts by weight, based on 100 parts by weight of the total friction material.
次に摩擦調整剤についてのべる摩擦調整剤の代
表的な例は無機粉末、たとえば硫酸バリウム、ケ
イソウ土、アルミナ、ドロマイト、炭酸カルシユ
ウム及び水酸化カルシユウム粉末等と有機粉末、
たとえばカシユーダスト、ラバーダスト、及びグ
ラフアイト等と金属粉の銅及び亜鉛粉などであ
る。その配合割合は重量で全摩擦材100重量部中
に30〜40重量部を含ませるものであり好ましくは
35〜37重量部である。なおここで云う摩擦調整剤
のことを摩擦充填材とも云われている場合があ
る。 Typical examples of friction modifiers include inorganic powders such as barium sulfate, diatomaceous earth, alumina, dolomite, calcium carbonate, and calcium hydroxide powders, and organic powders.
Examples include cashew dust, rubber dust, graphite, etc., and metal powders such as copper and zinc powders. The blending ratio is preferably 30 to 40 parts by weight in 100 parts by weight of the total friction material.
It is 35-37 parts by weight. Note that the friction modifier referred to herein may also be referred to as a friction filler.
以下なお詳細に実施例で本発明を説明する。 The present invention will be explained in more detail below with reference to Examples.
実施例 １
焼成炉に開繊された径50ミクロン繊維長3.0mm
の単繊維群を入れ窒素ガス雰囲気中で徐々に加温
し、摂氏600℃まで上昇させた。この上昇までに
30分を要した。この状態で約１時間焼成し硬度
120MHVの硬度の繊維を得た。この熱処理条件
で焼成した鉄系繊維基材を秤量し全摩擦材100重
量部中に60重量部、同じくレジン８重量部、有機
ダスト７重量部、グラフアイト18重量部、無機充
填剤17重量部をＶ型混合機にて混合した後、有備
成形として常温で面圧力600Kg／cmに調整した成
形機にて１分間行つてブレーキパツドの原形を得
た。その後、面圧500Kg／cm2、金型温度160℃に予
めセツトした成形機を用いて、９分間、加圧加熱
成形し、270℃に保持した加熱炉内で、25時間加
熱処理をし、放冷後所定寸法に研摩して摩擦材を
得た。Example 1 Fibers with a diameter of 50 microns and a length of 3.0 mm opened in a firing furnace
A group of single fibers was placed in the tube and gradually heated to 600 degrees Celsius in a nitrogen gas atmosphere. By this rise
It took 30 minutes. Baked in this state for about 1 hour to achieve hardness.
A fiber with a hardness of 120MHV was obtained. The iron-based fiber base material fired under these heat treatment conditions was weighed, and out of 100 parts by weight of the total friction material, 60 parts by weight, 8 parts by weight of resin, 7 parts by weight of organic dust, 18 parts by weight of graphite, and 17 parts by weight of inorganic filler. After mixing in a V-type mixer, molding was carried out for 1 minute in a molding machine adjusted to a surface pressure of 600 kg/cm at room temperature to obtain a prototype brake pad. Thereafter, using a molding machine preset at a surface pressure of 500 kg/cm 2 and a mold temperature of 160°C, it was pressurized and heated for 9 minutes, and then heat-treated in a heating furnace maintained at 270°C for 25 hours. After cooling, it was polished to a predetermined size to obtain a friction material.
実施例 ２
焼成炉に開繊された繊維径50ミクロン繊維長
3.0mmの単繊維群を入れ窒素ガス雰囲気中で徐々
に加温し摂氏900℃まで上昇させた。この上昇ま
でに30分を要した。この状態で約１時間焼成し硬
度70MHVの硬度を有する繊維を得た。この熱処
理条件で焼成した鉄系繊基材を使用して、実施例
１に記載の鉄系繊維基材を除いた配合材料と配合
割合と工程及び工程条件を採用して製造し摩擦力
を得た。Example 2 Fiber diameter 50 microns fiber length opened in a firing furnace
A group of 3.0 mm single fibers was introduced and gradually heated to 900 degrees Celsius in a nitrogen gas atmosphere. This ascent took 30 minutes. The fiber was fired in this state for about 1 hour to obtain a fiber having a hardness of 70MHV. Using the iron-based fiber base material fired under these heat treatment conditions, the friction force was obtained by manufacturing by adopting the blended materials, blending ratio, process, and process conditions described in Example 1 except for the iron-based fiber base material. Ta.
比較例 １
熱処理しない鉄系繊維基材を使用したもので、
実施例１に記載した鉄系繊維を熱処理した工程を
除いて全て実施例１と同じ方法を用いて摩擦材を
得た。Comparative Example 1 Using an iron-based fiber base material that is not heat treated,
A friction material was obtained using the same method as in Example 1 except for the step of heat treating the iron-based fibers described in Example 1.
以上、実施例１、実施例２、及び比較例１の性
能を見る為に、機械試験所型低速摩擦試験機を用
いて試験した。その結果、表１に評価結果をまと
めた。 As described above, in order to examine the performance of Example 1, Example 2, and Comparative Example 1, tests were conducted using a mechanical testing laboratory type low-speed friction tester. As a result, the evaluation results are summarized in Table 1.
表１ 評価結果
供試品 相手材摩耗
比較例１（従来品） 10μ
実施例１（本発明品） 1μ
実施例２（本発明品） 0.5μ
試験方法の試験条件は、スベリ速度７ｍ／sec、
常温、荷重10ｇ／cm2、20時間である。 Table 1 Evaluation results sample Abrasion of mating material Comparative example 1 (conventional product) 10μ Example 1 (product of the present invention) 1μ Example 2 (product of the present invention) 0.5μ The test conditions for the test method were: sliding speed of 7 m/sec,
The test was carried out at room temperature, under a load of 10 g/cm 2 , for 20 hours.
以上、表１で明らかな如く、本発明は鉄系繊維
を基材として用いた摩擦材であつても、相手材に
攻撃を与える事のない特性を具有するもので極め
て実用性の高い画期的な品質の摩擦材を提供して
いる。 As mentioned above, as is clear from Table 1, the present invention is a revolutionary material with extremely high practicality, even though it is a friction material using iron-based fibers as a base material, it has the property of not attacking the mating material. We provide high quality friction materials.
Claims (1)
て、該鉄系繊維を窒素ガス雰囲気中で熱処理し硬
度MHV50〜130に変換低下させて使用すること
を特徴とする車輛用摩擦材の製造方法。 ２ 鉄系繊維の窒素ガス雰囲気中で熱処理する条
件を摂氏600℃〜1000℃で１時間以上熱処理する
ことを特徴とする特許請求の範囲第１項記載の車
輛用摩擦材の製造方法。[Scope of Claims] 1. A vehicle friction material based on iron-based fibers, characterized in that the iron-based fibers are heat-treated in a nitrogen gas atmosphere to reduce the hardness to MHV50-130. Method of manufacturing friction material for use. 2. The method for manufacturing a friction material for a vehicle according to claim 1, wherein the iron-based fibers are heat-treated in a nitrogen gas atmosphere at 600°C to 1000°C for 1 hour or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17163081A JPS5872737A (en) | 1981-10-27 | 1981-10-27 | Car friction material manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17163081A JPS5872737A (en) | 1981-10-27 | 1981-10-27 | Car friction material manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5872737A JPS5872737A (en) | 1983-04-30 |
| JPH023050B2 true JPH023050B2 (en) | 1990-01-22 |
Family
ID=15926742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17163081A Granted JPS5872737A (en) | 1981-10-27 | 1981-10-27 | Car friction material manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5872737A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2696215B2 (en) * | 1987-10-23 | 1998-01-14 | アイシン化工 株式会社 | Asbestos-free friction material |
| JPH0774657B2 (en) * | 1987-10-30 | 1995-08-09 | アイシン化工株式会社 | Friction material for brake |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131847A (en) * | 1980-03-17 | 1981-10-15 | Sumitomo Electric Ind Ltd | Anticorrosive abrasive material |
-
1981
- 1981-10-27 JP JP17163081A patent/JPS5872737A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131847A (en) * | 1980-03-17 | 1981-10-15 | Sumitomo Electric Ind Ltd | Anticorrosive abrasive material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5872737A (en) | 1983-04-30 |
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