WO1989008795A1 - Frictional material - Google Patents

Frictional material Download PDF

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Publication number
WO1989008795A1
WO1989008795A1 PCT/JP1989/000268 JP8900268W WO8908795A1 WO 1989008795 A1 WO1989008795 A1 WO 1989008795A1 JP 8900268 W JP8900268 W JP 8900268W WO 8908795 A1 WO8908795 A1 WO 8908795A1
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WO
WIPO (PCT)
Prior art keywords
friction
friction material
pseudo
alloy
coefficient
Prior art date
Application number
PCT/JP1989/000268
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeho Maeda
Takashi Hata
Heiji Fukutake
Original Assignee
Kabushiki Kaisha Daikin Seisakusho
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 Kabushiki Kaisha Daikin Seisakusho filed Critical Kabushiki Kaisha Daikin Seisakusho
Priority to DE19893990205 priority Critical patent/DE3990205T1/en
Publication of WO1989008795A1 publication Critical patent/WO1989008795A1/en

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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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/127—Discs; Drums for disc brakes characterised by properties of the disc surface; Discs lined with friction material
    • 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
    • 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
    • F16D2069/002—Combination of different friction materials

Definitions

  • the present invention relates to a friction material such as a clutch I-sing, a disc-shaped pre-cleaning and the like.
  • the clutch disk of a clutch disk is mainly used for bonding nonwoven fabrics such as paste.
  • the resin is impregnated with a phenolic resin or the like and heated and molded.
  • the friction surface immediately after production must be entirely flat, and the friction plate will not be completely flat. Since it is not pressed against the freewheel, it is difficult to obtain a predetermined coefficient of friction in the initial state of use.
  • the conventional clutch fining method requires a time-consuming force method, such as applying a resin coating to the friction surface, to obtain a friction coefficient in the initial state. I was trying to keep it.
  • An object of the present invention is to improve the friction coefficient of a friction material in an initial stage immediately after manufacturing by forming a pseudo alloy spray coating on a friction surface.
  • the invention described in claim 1 of the present invention is characterized in that a pseudo alloy spray coating made of two kinds of metals is formed on a friction surface of a friction material. .
  • one of the metals Jz is a metal serving as a sacrificial anode of iron such as zinc.
  • the invention described in claim 3 of the present invention is characterized in that the ratio of the metal serving as the sacrificial anode of iron to the other metal is 3: 7 or 7: 3.
  • the invention according to claim 4 is characterized in that the other metal contains ⁇ ⁇ .
  • the invention according to claim 5 is characterized in that the friction material has a large-diameter hole at the center thereof.
  • the pseudo alloy sprayed coating has a length at least 1 Z from the outer peripheral end of the friction surface of the friction material to the large-diameter hole in the radial direction. It is characterized in that it is formed over the entire circumference on the outer peripheral side with a length of 3.
  • the mass of the sprayed pseudo-alloy film is 25 mgZ or less and 8 mgZ or less. It is characterized by the fact that there are many
  • the quasi-alloy sprayed coating maintains a high initial friction coefficient immediately after the production of the friction material at a predetermined value.
  • FIG. 5 is a front view of the friction material of the present invention.
  • Fig. 2 is a schematic view of a longitudinal section of a clutch, a pre-shearer and a flywheel.
  • FIG. 3 is a longitudinal sectional view of an arc type thermal spraying torch and a friction material showing a method of manufacturing the friction material of the present invention.
  • Fig. 4 is a graph showing the results of comparing the initial state of the friction coefficient between the present invention and the conventional friction material.
  • Fig. 5 is an enlarged graph showing the value of the coefficient of friction at the initial cycle number in Fig. 4.
  • 1 is an annular friction material
  • C is the axis of the friction material 1 (only the center is shown).
  • Reference numeral 2 denotes a friction material 1 and a large-diameter hole at the periphery.
  • Numeral 3 denotes a friction surface of the friction material 1, on which a pseudo alloy spray coating 4 is formed over the entire circumference.
  • the material of the friction material ⁇ may be glass fiber or rubber binder (acrylonitrile ripenedene rubber (NBR) or styrene rubber). SBR) to which fillers such as fillers are added), etc. will be adopted.
  • NBR acrylonitrile ripenedene rubber
  • SBR styrene rubber
  • the mass of the quasi-alloy sprayed coating 4 is more than 8 mg CT! And preferably not more than 25 mg / d.
  • a gold sprayed coating is a sprayed coating that looks as if it were an alloy because the two types of metals or alloys are sprayed in a state where they are not fused together. It is separate from general alloys formed by fusion.
  • As the metal constituting the pseudo-alloy sprayed coating 4 zinc, yellow or the like is used. Since zinc can serve as a sacrificial anode for iron, it is preferable to use zinc for two of the two species.
  • Length B is set in the range from Z 3 to 2 Z 3 of length A.
  • the outer periphery of the press plate 20 is particularly inclined to the flywheel 21 side in cross section as shown in Fig. 2. Even so, the pseudo-alloy sprayed coating 4 protrudes in the direction of the axis C, which is effective in reducing abrasion by one-sided contact.
  • a pseudo alloy spray coating 4 may be formed over the entire friction surface 3.
  • the area where the pseudo-alloy sprayed film 4 is formed is defined by the length A between the outer circumference of the friction surface 3 and the large-diameter hole 2 in the radial direction at least on the outer circumference side (length B) of the length of ⁇ 3 If set to, so-called squealing will be reduced. This is because the pseudo-alloy sprayed coating 4 protrudes in the direction of the axis G, and the outer peripheral portion first has a press plate 20 or a flywheel. This is because the clutch vibration can be reduced by being sandwiched between the rollers 2.
  • Numeral 5 is a thermal spraying unit, which employs an arc type.
  • the thermal spray material 6 is sprayed from the thermal spray port 7 of the torch 5 onto the friction surface 3 of the friction material 1.
  • the thermal spray material 6 the above-mentioned zinc and brass are employed.
  • the thermal spray material 6 the above-mentioned zinc and brass are employed.
  • the arc type it is permissible to use a different type of thermal spraying unit.
  • FIG. 4 is a graph showing the relationship between the friction coefficient ⁇ and the number C y of the clutch connection breaking cycles when the present invention is employed, and FIG. This is a graph in which the value of the coefficient of friction at the initial cycle number Cy is shown in an enlarged manner.
  • X 2 and X2 represent the measurement results when the friction material having the pseudo-alloy sprayed coating according to the present invention was used.
  • ⁇ 0, Y1 Conventional without thermal spray coating 5 is a graph comparing the measurement results obtained with the fc friction material by forming only the friction material, Y 2, by spraying zinc.
  • the measurement was performed under the following conditions.
  • the value of the coefficient of friction ⁇ between 0.2 and 18 is not less than 0.2.5, and as shown in Fig. 5, the coefficient of friction when the value of the initial cycle number C y is ⁇ The values were approximately 0 and 26, and the value of the coefficient of friction ⁇ at the beginning of operation was relatively high. Therefore, by forming a spray coating of a pseudo-alloy of zinc-brass on the friction surface, it is possible to maintain a high friction coefficient at the beginning of operation.
  • the value of the coefficient of friction ⁇ between 2 and ⁇ 0 2 is not only extremely good at 0.30 or more, but also in the initial cycle as shown by X 2 in Fig. 5.
  • the value of the number Cy was ⁇
  • the value of the friction coefficient ⁇ was approximately 0.28, indicating that the value of the friction coefficient at the beginning of operation became even higher. Therefore, it is possible to maintain a high value of the friction coefficient ⁇ at the beginning of operation by forming a zinc-brass pseudo-alloy spray coating of about 2 mg / mg.
  • the ratio of zinc to brass in the pseudo-alloy sprayed coating in (1) above is 1: 1. However, this ratio should be 3-7: 7. It is possible to set up to a ratio of ⁇ 3.
  • the present invention is characterized in that a pseudo-alloy sprayed coating composed of two metals is formed on the friction surface of the friction material, so that the initial friction torque is maintained at a predetermined value. can do . Therefore, when a friction material adopting the present invention is used in a vehicle, a good transmission torque can be obtained even at the beginning of driving. Therefore, after the product is delivered, the user of the friction material can immediately use the vehicle without adjusting the friction torque.
  • the present invention can be employed as a friction material of a clutch in a vehicle such as an automobile for an industrial construction machine or other power transmission devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

This invention relates to a frictional material for a clutch facing, a disc pad and a brake lining, characterized in that a pseudo-alloy sprayed film (4) consisting of two kinds of metals is formed on a frictional surface (3) of a frictional material (1) so as to improve the coefficient of friction thereof in an initial stage immediately after the manufacturing of the product.

Description

技 Skill
；分 明 細 野 ; Akira Hosono
材  Lumber
本発明 は ク ラ ッ チ フ I 一 シ ン グ 、 デ ィ ス ク ノ\° ッ ド プ レ ー キ ラ イ ニ ン グ等の摩擦材 に 関 す る 。 The present invention relates to a friction material such as a clutch I-sing, a disc-shaped pre-cleaning and the like.
北 North
技 —術  Technique
従来用 い ら れて い る摩擦材 と し て 例 え ぱ ク ラ ッ チデ イ ス ク の ク ラ ッ チ フ エ — シ ン グ は 、 主 に ァ ス べ ス 卜 等 の不織布 に 結合剤 と なる フ エ ノ ー ル レ ジ ン等 を含浸さ せ て 加熱加压成形 し た も の が一般的であ る 。 と こ ろ が そ の よ う な従来の ク ラ ッ チフ 1 一 シ ン グを使用 し た 場 合 、 製造直後の摩擦面 はその全面が必ず し ちプ レ ツ シ ヤ ープ レ ー 卜 ゃ フ ラ ィ ホ ィ ー ル に 圧接 し な い ので 、 使 用 の初期状態 に お い て は所定 の摩擦係数を得る こ と が で ぎ な い 。 そ の た め従来の ク ラ ッ チ フ エ 一 シ ン グは 、 そ の摩擦面 に レ ジ ン の コ 一テ ィ ングを施す等 、 手間 の かかる力 法で初期状態 に おけ る摩擦係数の保持を 図 つ て い た 。 な お先行技術 と し て米国特許第 4 , 585 , 691号 があ り 、 鉄の犠牲陽極 と な り う る金属を摩擦材 の表面 に 0 . 5 m g Z 〜 8 . 0 m g / d溶射 、 付着さ せ て な る 摩擦材 が開示さ れて ヽる 。 し 7)、 しそ の構 に よ つ て お 摩擦係数を あ る程度向上さ せ る こ と は可 能で あ る が 、 製造直後の摩擦係数 は依然低 く 、 所定 の 回数だけ使用 し て か ら 出荷 し た り 或 い は上述 し た 処理方法を施 す 必 要がある 。 As a conventional friction material, for example, the clutch disk of a clutch disk is mainly used for bonding nonwoven fabrics such as paste. In general, the resin is impregnated with a phenolic resin or the like and heated and molded. However, if such a conventional clutch 11-sing is used, the friction surface immediately after production must be entirely flat, and the friction plate will not be completely flat. Since it is not pressed against the freewheel, it is difficult to obtain a predetermined coefficient of friction in the initial state of use. For this reason, the conventional clutch fining method requires a time-consuming force method, such as applying a resin coating to the friction surface, to obtain a friction coefficient in the initial state. I was trying to keep it. As a prior art, there is U.S. Pat. No. 4,585,691 in which a metal serving as a sacrificial anode of iron is sprayed on a surface of a friction material in a range of 0.5 mg Z to 8.0 mg / d. A friction material to be adhered is disclosed. 7) Although it is possible to improve the coefficient of friction to some extent by using the structure, the coefficient of friction immediately after production is still low, and it is necessary to use it a specified number of times. Must be shipped or subjected to the treatment method described above. It is necessary.
本発明 は摩擦面に疑似合金溶射被膜を形成する こ と に よ り 、 製造直後の初期段階における摩擦材の摩擦係 数の向上を図る こ とを目 的と している 。  An object of the present invention is to improve the friction coefficient of a friction material in an initial stage immediately after manufacturing by forming a pseudo alloy spray coating on a friction surface.
発明の開示 - 上記目 的を達成するために本件請求項 Ί 記載の発明 は、 摩擦材の摩擦面に 2 種の金属か らなる疑似合金溶 射皮膜を形成 した こ とを特徴 と している 。 DISCLOSURE OF THE INVENTION-To achieve the above object, the invention described in claim 1 of the present invention is characterized in that a pseudo alloy spray coating made of two kinds of metals is formed on a friction surface of a friction material. .
さ ら に本件請求項 2 記載の発明は、 Jz記金属の う ち の 1 種が、 亜鉛等の鉄の犠牲陽極となる金属であるこ とを特徴 と している。  Further, the invention described in claim 2 is characterized in that one of the metals Jz is a metal serving as a sacrificial anode of iron such as zinc.
さ ら に本件請求項 3記載の発明は 上記鉄の犠牲陽 極となる金属 と他の金属との比率が 3対 7 ない し 7 対 3 であることを特徴と して いる。  Furthermore, the invention described in claim 3 of the present invention is characterized in that the ratio of the metal serving as the sacrificial anode of iron to the other metal is 3: 7 or 7: 3.
さ ら に本件請求項 4記載の発明 は 上記他の金属が 鋦を含むこ とを特徴 と している。  Further, the invention according to claim 4 is characterized in that the other metal contains 上 記.
さ ら に本件請求項 5 記載の発明は 上記摩擦材が、 その中心に大径孔を有する こ とを特徴と している。  The invention according to claim 5 is characterized in that the friction material has a large-diameter hole at the center thereof.
さ ら に本件請求項 6記載の発明は、 上記疑似合金溶 射皮膜が 、 上記摩擦材の摩擦面の外周端部から半径方 向の上記大径孔に至る間の長さの少なく とも 1 Z 3 の 長さの外周側の範囲全周 にわた っ て形成されて いるこ とを特徴 と し て いる 。  Further, in the invention according to claim 6, the pseudo alloy sprayed coating has a length at least 1 Z from the outer peripheral end of the friction surface of the friction material to the large-diameter hole in the radial direction. It is characterized in that it is formed over the entire circumference on the outer peripheral side with a length of 3.
さ ら に本件請求項 7 記載の発明 は、 上記疑似合金溶 射皮膜の質量が、 2 5 mg Z 以 Fであ っ て 8 m g Z よ り も多い こ と を特徴 と し て い る 。 Further, according to the invention described in claim 7 of the present invention, the mass of the sprayed pseudo-alloy film is 25 mgZ or less and 8 mgZ or less. It is characterized by the fact that there are many
疑似合金溶射皮膜 は 、 摩擦材製造直後 に お け る初期 の摩擦係数 を高い所定値 に 維持す る 。  The quasi-alloy sprayed coating maintains a high initial friction coefficient immediately after the production of the friction material at a predetermined value.
図面 の簡単な説明 Brief description of the drawings
第 Ί 図 は本発明 の摩擦材の正面 図 、  FIG. 5 is a front view of the friction material of the present invention,
第 2 図 は ク ラ ッ チ と プ レ ツ シ ヤ ー プ レ ー 及び フ ラ ィ ホ イ 一ルの縦断面部分略図 、  Fig. 2 is a schematic view of a longitudinal section of a clutch, a pre-shearer and a flywheel.
第 3 図 は本発明 の摩擦材の製造方法を示す ア ー ク 式 溶射用 卜一チ と 摩擦材の縱断面図 、  FIG. 3 is a longitudinal sectional view of an arc type thermal spraying torch and a friction material showing a method of manufacturing the friction material of the present invention.
第 4 図 は本発明 と 従来の摩擦材 に お け る初期状態の 摩擦係数を比較 し た結果を示す グラ フ 、  Fig. 4 is a graph showing the results of comparing the initial state of the friction coefficient between the present invention and the conventional friction material.
第 5 図 は第 4 図の初期サ イ ク ル数 に お け る摩擦係数 の値 を拡大 し て 示 し た グラ フ で あ る 。  Fig. 5 is an enlarged graph showing the value of the coefficient of friction at the initial cycle number in Fig. 4.
発明 を実施 す る た め の最良 の形 BEST MODE FOR CARRYING OUT THE INVENTION
本発明 の実施例 を示 す第 1 図 に お い て 、 1 は環状 の 摩擦材で 、 C は摩擦材 1 の軸線 ( 中心の み図示 ） で あ る 。 2 は摩擦材 1 と 周心の大径孔で あ る 。 3 は摩擦材 1 の摩擦面で 、 そ の外周部分 に は疑似合金溶射皮膜 4 が全周 に わ た っ て形成さ れる 。  In FIG. 1 showing an embodiment of the present invention, 1 is an annular friction material, and C is the axis of the friction material 1 (only the center is shown). Reference numeral 2 denotes a friction material 1 and a large-diameter hole at the periphery. Numeral 3 denotes a friction surface of the friction material 1, on which a pseudo alloy spray coating 4 is formed over the entire circumference.
摩擦材 Ί の材質 と し て は 、 ガ ラ ス繊維や ゴムバ イ ン ダ （ ァ ク リ ロ ニ 卜 リ ル プ タ ジ ェ ン ゴム （ N B R ) ま た は ス チ レ ンブ タ ジ エ ン ゴム （ S B R ) に フ イ ラ 一 等の 充塡剤 を加 え た お の ） 等が採用 さ れる 。  The material of the friction material Ί may be glass fiber or rubber binder (acrylonitrile ripenedene rubber (NBR) or styrene rubber). SBR) to which fillers such as fillers are added), etc. will be adopted.
疑似合金溶射皮膜 4 の質量 は 8 m g CT!よ り も多 く 、 2 5 m g / d以下で あ る こ と が好 ま し い 。 こ こ で疑似合 金溶射皮膜と は、 2 種の金属ま た は合金が融合 し てい ない状態で溶射さ れて いるため 、 あたかも合金である かのよ う に見える溶射皮膜をいい 、 いわゆる融点以上 に加熟さ れて融合形-成される一般の合金と は 別され る。 疑似合金溶射皮膜 4 を構成する金属と して は亜鉛 及び黄鋦等が採用さ れる 。 こ とに亜鉛は鉄の犠牲陽極 とな り得るので 2 種の う ち Ί 種につ いて亜鉛を採用 するこ とが好ま し い。 The mass of the quasi-alloy sprayed coating 4 is more than 8 mg CT! And preferably not more than 25 mg / d. Here A gold sprayed coating is a sprayed coating that looks as if it were an alloy because the two types of metals or alloys are sprayed in a state where they are not fused together. It is separate from general alloys formed by fusion. As the metal constituting the pseudo-alloy sprayed coating 4, zinc, yellow or the like is used. Since zinc can serve as a sacrificial anode for iron, it is preferable to use zinc for two of the two species.
本実施例 において は外周部分から大径孔 2 ま での摩 擦面 3 の半径方向の長さを A 、 外周側の疑似合金溶射 皮膜 4 が形成される範囲の長さを B とする と 、 長さ B は長さ Aの Ί Z 3 か ら 2 Z 3 迄の範囲に設定されて い る 。 この構造を採用する と、 第 2 図に示すよ う に特に プ レ ッ シ ャ ープ レー 卜 2 0 の外周部が、 断面で見て フ ライ ホイ ール 2 1 側 に傾斜 している場合であ っ ても、 疑似合金溶射皮膜 4 の部分が軸線 C方向に張出 して い るため、 片当 り に よ っ て摩耗を低減するの に有効であ る 。 無論、 摩擦面 3 の全面にわた っ て疑似合金溶射皮 膜 4 を形成 しても よ い 。 但 しその場合に は総質量が若 干増加する 。 なお疑似合金溶射 '膜 4 を形成する範囲 を摩擦面 3 の外周か ら半径方向の大径孔 2 に至る間の 長さ Aの少なく とも Ί Ζ 3 の長さ の外周側 （ 長さ B ) に設定すれば、 いわゆる鳴きも少な く なる 。 これは疑 似合金溶射皮膜 4 が軸線 G方向に張出 しているためま ず外周部分がプ レ ッ シ ャ ープ レー 卜 2 0や フ ライ ホイ ー ル 2 に 挟持さ れる こ と に よ り ク ラ ッ チの振動 を低 減で き る か ら で あ る 。 こ の 鳴ぎ を低減す る た め に は 、 9 . 0 cm以 下 の疑似合金溶射皮膜 4 を用 い れば よ い が 、 付着量 が 0 . 4 m g / of 以下 の場合 に は 、 耐鑌性 が低下す る の で好 ま し く な い 。 In the present embodiment, when the length in the radial direction of the friction surface 3 from the outer peripheral portion to the large-diameter hole 2 is A, and the length of the range in which the pseudo-alloy sprayed coating 4 on the outer peripheral side is formed is B, Length B is set in the range from Z 3 to 2 Z 3 of length A. When this structure is adopted, the outer periphery of the press plate 20 is particularly inclined to the flywheel 21 side in cross section as shown in Fig. 2. Even so, the pseudo-alloy sprayed coating 4 protrudes in the direction of the axis C, which is effective in reducing abrasion by one-sided contact. Of course, a pseudo alloy spray coating 4 may be formed over the entire friction surface 3. However, in that case, the total mass slightly increases. The area where the pseudo-alloy sprayed film 4 is formed is defined by the length A between the outer circumference of the friction surface 3 and the large-diameter hole 2 in the radial direction at least on the outer circumference side (length B) of the length of Ί 3 If set to, so-called squealing will be reduced. This is because the pseudo-alloy sprayed coating 4 protrudes in the direction of the axis G, and the outer peripheral portion first has a press plate 20 or a flywheel. This is because the clutch vibration can be reduced by being sandwiched between the rollers 2. To reduce this squeal, it is sufficient to use a pseudo-alloy sprayed coating 4 of 9.0 cm or less, but if the adhesion amount is 0.4 mg / of or less, the resistance to squealing can be reduced. It is not preferable because the strength is lowered.
ま た 外周側 か ら 1 / 3 の範囲 に 限定 し た 場 合 に は 、 ま ず外周部分が 7 レ ツ シ ャ ー プ レ ー 卜 2 0 ゃ フ ラ ィ ホ ィ ー ル 2 に 挟持さ れる た め摩擦面 3 全面 に わ た っ て 溶射 し た 場合 に 比ベ て 比較的少な い溶射材で本発明 の 効果を奏す る こ と がでぎ 、 し か ¾摩擦材 1 全体の質量 を低減で ぎ る ので 、 イ ナ ー シ ャ が増加 す る恐 れも な い 第 3 図 は摩擦材 1 の加 工 方法を示 し て い る 。  In addition, if the area is limited to 1/3 from the outer circumference, the outer circumference is first sandwiched between 7 rectilinear plates 20 ゃ freewheel 2 Therefore, the effect of the present invention can be achieved with a relatively small amount of the sprayed material as compared with the case where the entire surface of the friction material 3 is sprayed, and thus the weight of the entire friction material 1 is reduced. There is no danger that the inertia will increase because of the friction. Figure 3 shows the method of processing the friction material 1.
5 は溶射用 卜一チで 、 ア ー ク 式 の お の を採用 し て い る 。 溶射材 6 は 卜 ー チ 5 の溶射口 7 か ら 摩擦材 1 の摩 擦面 3 に 溶射さ れる 。 溶射材 6 と し て は上述 し た 亜鉛 及び黄銅 が採用 さ れる 。 な お溶射用 卜一チ と し て は ァ ー ク式以外の あ の を採用 し て も よ い 。  Numeral 5 is a thermal spraying unit, which employs an arc type. The thermal spray material 6 is sprayed from the thermal spray port 7 of the torch 5 onto the friction surface 3 of the friction material 1. As the thermal spray material 6, the above-mentioned zinc and brass are employed. Other than the arc type, it is permissible to use a different type of thermal spraying unit.
( 測定結果 )  ( Measurement result )
第 4 図 は 、 本発明 を採用 し た場合の摩擦係数 ^ と ク ラ ッ チ接続遮断サ イ ク ル数 C y と の 関係を示 す グラ フ であ り 、 第 5 図 は第 4 図 の初期サ イ ク ル数 C y に お け る摩擦係数 の値を 拡大 し て 示 し た グ ラ フ で あ る 。 第 4 図 、 第 5 図 中 、 X Ί 及び X 2 は本発明 に よ る疑似合 金溶射皮膜を有す る摩擦材を 採用 し た 場合の測定結果 ¾■ し て お <0 、 Y 1 は溶射被膜を形成 し て い な い従来 の摩擦材、 Y 2 は亜鉛のみを溶射して形成 し fc摩擦材 に よ る測定結果を比較したグラフである 。 FIG. 4 is a graph showing the relationship between the friction coefficient ^ and the number C y of the clutch connection breaking cycles when the present invention is employed, and FIG. This is a graph in which the value of the coefficient of friction at the initial cycle number Cy is shown in an enlarged manner. In FIGS. 4 and 5, X 2 and X2 represent the measurement results when the friction material having the pseudo-alloy sprayed coating according to the present invention was used. <0, Y1 Conventional without thermal spray coating 5 is a graph comparing the measurement results obtained with the fc friction material by forming only the friction material, Y 2, by spraying zinc.
なお この測定結果は以下の条件下で行なわれた 。  The measurement was performed under the following conditions.
ク ラ ッ チサイズ （ MM) ： 2 2 5 ( 外径 ）  Clutch size (MM): 2 25 (outer diameter)
1 5 0 ( 内径）  1 5 0 (inner diameter)
摩 擦 材 の 材 質 F 2 0 2  Material of friction material F 2 0 2
イナ — シ ャ ( KG. H. S2) 0. 1 8  Ina — Sha (KG. H. S2) 0. 1 8
回 転 数 （ R P M ) 7 5 0  Number of rotations (RPM) 7 5 0
取付荷重 （ K G ) 初期 4 9 5  Mounting load (KG) Initial 4 9 5
試験後 4 7 4  After test 4 7 4
( 1 ) 従来例の測定結果  (1) Measurement result of conventional example
① 溶射被膜を形成していない摩擦材の場合 ： 第 4図の Y 1 で示すよう に 、 イ クル数 C yの値が 2〜 1 8の間は摩擦係数 ^が 0. 3を越え！： お り 良好 -な状態を示し ているが、 第 5図 に示すよ う に )_ィ クル 数 C yの値が 1 の時の摩擦係数 ^の値は概ね 0. 2 0 であ り 、 初期の摩擦係数 の値は低く なつ ている 。 従 つ てこの摩擦材をそのまま使用する と 、 車両運転初期 時の ト ルク伝達が不十分 となる恐れがある 。  (1) In the case of a friction material without a thermal spray coating: As shown by Y1 in Fig. 4, the friction coefficient ^ exceeds 0.3 when the number of cycles Cy is 2 to 18! : Good-shows good condition, but as shown in Fig. 5, when the value of) _cycle number Cy is 1, the value of friction coefficient ^ is approximately 0.20, The value of the initial coefficient of friction is low. Therefore, if this friction material is used as it is, there is a possibility that the torque transmission at the beginning of vehicle operation will be insufficient.
② 亜鉛のみを溶射 して形成 した摩擦材の場合 ： 第 5図の Y 2で示すよ う に 、 i イ クル数 C yの値が Ί の時の摩擦係数 ^の値はほぼ 0. 2 2であ り 、 上記 Υ Ί の値に比べて若干向上するものの、 依然、 初期摩 擦係数が低い。 従っ て溶射被膜を形成 していない摩擦 材をその ま ま使用 する と 、 上記 と同様に車両運転初期 時の 卜 ル ク 伝達が不十分 と な る 。 (2) In the case of a friction material formed by spraying only zinc: As shown by Y2 in Fig. 5, the value of the friction coefficient ^ when the number of i cycles Cy is y is almost 0.22. Although it is slightly improved as compared with the value of 上 記 上 記, the initial friction coefficient is still low. Therefore, if the friction material without the thermal spray coating is used as it is, the initial operation of the vehicle will be similar to the above. The torque transmission at the time becomes insufficient.
( 2 ) 本発明 の測定結果  (2) Measurement results of the present invention
① 8 mg/ の 亜鉛 一 黄銅疑似合金溶射皮膜を形成 し た 摩擦材の場合 ：  ① In the case of a friction material with a spray coating of 8 mg / zinc-brass pseudo-alloy:
第 4 図 の X 1 で示 す よ う に 、 サ イ ク ル数 C yの値 が As shown by X 1 in FIG. 4, the value of the number of cycles Cy is
2 〜 1 8 の 間 は摩擦係数 ^ の値が 0 . 2.5 以上で あ る の みな ら ず 、 第 5 図 に 示す よ う に 初期サ イ ク ル数 C y の値が Ί の 時の摩擦係数 の値 は概ね 0 ， 2 6で あ り 運転初期 の摩擦係数 ^ の値も比較的高い こ と がわ か つ た 。 従 っ て亜鉛 一 黄銅疑似合金溶射皮膜を摩擦面 に 形 成す る こ と に よ り 、 運転初期 時の摩擦係数 を 高い値 に 保持す る こ と がで き る 。 The value of the coefficient of friction ^ between 0.2 and 18 is not less than 0.2.5, and as shown in Fig. 5, the coefficient of friction when the value of the initial cycle number C y is ずThe values were approximately 0 and 26, and the value of the coefficient of friction ^ at the beginning of operation was relatively high. Therefore, by forming a spray coating of a pseudo-alloy of zinc-brass on the friction surface, it is possible to maintain a high friction coefficient at the beginning of operation.
② Ί 2 mgノ ^の亜鉛 一 黄銅疑似合金溶射皮膜を形 成 し た 摩擦材 の場合 ：  ② In the case of a friction material formed with a sprayed coating of 2 mg of zinc-brass pseudo-alloy of zinc:
第 4 図 の X 2 で示 す よ う に 、 サ イ ク ル数 C yの値 が As shown by X 2 in FIG. 4, the value of the number of cycles Cy is
2 〜 Ί 02 の 間 は摩擦係数 ^ の値が概ね 0 . 3 0以上 と きわ め て 良好で あ る の みな ら ず 、 第 5 図 の X 2 で示 す よ う に 、 初期サイ ク ル数 C yの値が Ί の 時の摩擦係 数 ^ の値は概ね 0 . 2 8 で あ り 、 運転初期 の摩擦係数 の値がさ ら に高 く な る こ と がわ か っ た 。 従 っ て Ί 2 の mg/ の 亜鉛 - 黄銅疑似合金溶射皮膜を形成す る こ と よ り ー屬運転初期 時の摩擦係数 ^ を高 い値 に 保持す る こ と が で ぎ る 。 - なお上記①②の疑似合金溶射皮膜 の亜鉛 と 黄銅 の比 率 は 1 ： 1 で あ る が 、 こ の 比率 に つ い て は 3〜 7 ： 7 〜 3 の比率に まで設定する こ とが 可能である。 The value of the coefficient of friction ^ between 2 and Ί 0 2 is not only extremely good at 0.30 or more, but also in the initial cycle as shown by X 2 in Fig. 5. When the value of the number Cy was Ί, the value of the friction coefficient ^ was approximately 0.28, indicating that the value of the friction coefficient at the beginning of operation became even higher. Therefore, it is possible to maintain a high value of the friction coefficient ^ at the beginning of operation by forming a zinc-brass pseudo-alloy spray coating of about 2 mg / mg. -The ratio of zinc to brass in the pseudo-alloy sprayed coating in (1) above is 1: 1. However, this ratio should be 3-7: 7. It is possible to set up to a ratio of ~ 3.
( 発明の効果 ）  ( The invention's effect )
以上説明 したよ う に本発明は、 摩擦材の摩擦面 に 2 種の金属から なる疑似合金溶射皮膜を形成 し た こ とを 特徵と しているので 、 初期の摩擦 卜ルク を所定値に 維持する こ とができる 。 従っ て本発明を採用 した摩擦 材を車両に使用 する と、 運転初期時において も良好な 伝達 卜ルク を得る こ とができる。 従っ て製品納入後摩 擦材のユ ーザは摩擦 トルク を調整するこ とな く 直ち に 車両に使用 する こ とができる。  As described above, the present invention is characterized in that a pseudo-alloy sprayed coating composed of two metals is formed on the friction surface of the friction material, so that the initial friction torque is maintained at a predetermined value. can do . Therefore, when a friction material adopting the present invention is used in a vehicle, a good transmission torque can be obtained even at the beginning of driving. Therefore, after the product is delivered, the user of the friction material can immediately use the vehicle without adjusting the friction torque.
すなわち本発明に よる と単に高い摩擦係数が得られ るだけでな く 、 疑似合金溶射皮膜去採用する こ と に よ つ てサイ クル数の初期状態において従来構造に はない 良好な摩擦係数を得る こ とができるのである 。 無論本 発明を採用す る こ と によ て長期にわた っ て 摩擦係数 が安定する こ と はい う までもない。  That is, according to the present invention, not only a high friction coefficient can be obtained, but also a favorable friction coefficient which is not present in the conventional structure can be obtained in the initial state of the number of cycles by adopting the pseudo-alloy sprayed coating. You can do that. Needless to say, the adoption of the present invention stabilizes the friction coefficient over a long period of time.
さ ら に疑似合金溶射皮膜 4 を形成す るこ と に よ り摩 擦面の摩耗を低減できるので摩擦面の鑌を防止するこ とがでぎる 。  Further, since the wear of the friction surface can be reduced by forming the pseudo-alloy thermal sprayed coating 4, it is possible to prevent the friction surface from being damaged.
産業上の利用可能性 Industrial applicability
本発明は乗用車及び産業建設機用自動車等の車両ま た はその他の動力伝達装置に おけるク ラ ッ チの摩擦材 と して採用 す る こ とができる。  INDUSTRIAL APPLICABILITY The present invention can be employed as a friction material of a clutch in a vehicle such as an automobile for an industrial construction machine or other power transmission devices.

Claims

請求の範囲 The scope of the claims
1 . 摩擦材 の摩擦面 に 2 種の金属か ら な る 疑似合金 溶射皮膜を形成 し た こ と を特徴 と す る摩擦材 。 1. Friction material characterized by forming a pseudo-alloy thermal spray coating made of two kinds of metals on the friction surface of the friction material.
2 . 上記金属の う ち の 1 種 は 、 鉄 の犠牲 陽極 と な る 亜鉛な ど の金属で あ る 請求項 1 記載の摩擦材 。  2. The friction material according to claim 1, wherein one of the metals is a metal such as zinc serving as a sacrificial anode of iron.
3 . 上記鉄の犠牲陽極 と な る金属 と 他 の金属 と の比 率 は 、 3 対 7 な い し 7 対 3 で あ る 請求項 2 記載の摩擦 材 。  3. The friction material according to claim 2, wherein the ratio of the metal serving as the sacrificial anode of iron to another metal is 3 to 7 or 7 to 3.
4 . 上記他の金属 は 、 鋦を含む請求項 2 ま た は 3 記 載の摩擦材 。  4. The friction material according to claim 2, wherein the other metal contains 鋦.
5 . 上記摩擦材 は 、 そ の中心に 大径孔を有す る請求 項 1 - 4 記載の摩擦材 。  5. The friction material according to claim 1, wherein the friction material has a large-diameter hole at its center.
6 . 上記疑似合金溶射皮膜は 、 上記摩擦材 の摩擦面 の外周端部か ら 半径方向 の上記大径孔 に 至る 間 の良 さ の少な く と も Ί / 3 の長さ の外周側 の範囲全周 に わ た つ て 形成 さ れ て い る請求項 5 記載の摩擦材 。  6. The pseudo-alloy sprayed coating has a good quality from the outer peripheral edge of the friction surface of the friction material to the large-diameter hole in the radial direction at least on the outer peripheral side with a length of 外 周 / 3. 6. The friction material according to claim 5, which is formed over the entire circumference.
7 . 上記疑似合金溶射皮膜の質量 は 、 2 5 m g / ci以 下で あ っ て 8 m g / よ り も多い請求項 1 - 6 記載の摩 擦材 。  7. The friction material according to claim 1, wherein the mass of the pseudo-alloy sprayed coating is 25 mg / ci or less and more than 8 mg / ci.
PCT/JP1989/000268 1988-03-15 1989-03-10 Frictional material WO1989008795A1 (en)

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DE19893990205 DE3990205T1 (en) 1988-03-15 1989-03-10 FRICTION MATERIAL

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JP63/61317 1988-03-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015058756A1 (en) * 2013-10-22 2015-04-30 Schaeffler Technologies AG & Co. KG Multi-layer friction lining

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141326A (en) * 1985-12-13 1987-06-24 Hitachi Chem Co Ltd Friction material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141326A (en) * 1985-12-13 1987-06-24 Hitachi Chem Co Ltd Friction material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015058756A1 (en) * 2013-10-22 2015-04-30 Schaeffler Technologies AG & Co. KG Multi-layer friction lining
JP2016538494A (en) * 2013-10-22 2016-12-08 シェフラー テクノロジーズ アー・ゲー ウント コー． カー・ゲーＳｃｈａｅｆｆｌｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ ＆ Ｃｏ． ＫＧ Multi-layer friction lining

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