JPS6347783B2 - - Google Patents
Info
- Publication number
- JPS6347783B2 JPS6347783B2 JP54044676A JP4467679A JPS6347783B2 JP S6347783 B2 JPS6347783 B2 JP S6347783B2 JP 54044676 A JP54044676 A JP 54044676A JP 4467679 A JP4467679 A JP 4467679A JP S6347783 B2 JPS6347783 B2 JP S6347783B2
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- friction
- sintered
- vol
- mating material
- 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
Links
- 239000000463 material Substances 0.000 claims description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 229910002804 graphite Inorganic materials 0.000 claims description 24
- 239000010439 graphite Substances 0.000 claims description 24
- 230000013011 mating Effects 0.000 claims description 18
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- 229910002549 Fe–Cu Inorganic materials 0.000 claims description 6
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000002783 friction material Substances 0.000 description 10
- 238000005245 sintering Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Powder Metallurgy (AREA)
Description
〔産業上の利用分野〕
本発明は摩擦材の相手材の改良、具体的には摩
擦材料（摩擦材と相手材）の性能向上のため相手
材に潤滑機能を持たせ摩擦性能の安定化及び摩擦
低減を図ると共に相手材の損傷を軽減し得る摩擦
相手材およびその製法に関する。
〔従来の技術〕
従来、摩擦材（ライニング材）と相手材（摺動
材）とからなる摩擦組合せにおいて、相手材は永
久構造材料的な考え方の上に立脚し摩擦性能の不
具合は全て摩擦材に原因していると解されその対
策が摩擦材の改良に負わされていた。
また現在この種の相手材を構成する素材として
鋳鉄が最も広範に用いられているが、これは鋳鉄
組織中に存在するごく僅か（3wt％Ｃ程度）の遊
離黒鉛による潤滑効果が相手材に優れた摩擦性能
を付与する故である。
従来においても黒鉛、二硫化モリブデン等の層
状固体潤滑材を含有するFe基焼結合金は知られ
ているが、黒鉛等の固体層状潤滑材の合計が20％
以下のものであり、これを摩擦相手板として用い
た場合摩擦相手材として十分な性能が得られな
い。
〔発明が解決すべき問題点〕
そこで本発明者はこの程度の黒鉛でも他の材
料、例えば鋼（SS材、SC材）に比較して格段に
優れた相手材を提供し得る点に注目してこの黒鉛
含有量を更に増加すると共にこの含有量を調整す
ることにより目的に応じた強度及び潤滑効果を有
する相手材を実用化し従来困難とされていた摩擦
条件の範囲を適宜に変化させることを狙つたもの
である。
しかし黒鉛は金属との比重差が大きく濡れ性が
悪いため添加量を増大させる合金化が困難である
という問題があつた。これに対してCu又はAlを
母材として黒鉛粒子をメツキ処理し特殊な潤滑材
を加えて金属との濡れ性を向上させて添加し高圧
鋳造により黒鉛分散鋳造合金を得る方法が開発さ
れている。この方法によると黒鉛を最高20vol％
まで添加可能であるが、高圧鋳造のため金型の強
度上の制約の点からCu系、Al系などの比較的融
点の低い金属を母材とするものに限られている。
〔問題点を解決するための手段〕
本発明は高温、高速など吸収エネルギの大きい
用途でも使用可能なFe又はFe−Cu系を母材と
し、黒鉛添加量を合計量が20vol％を超え80vol％
まで更に大巾に増大すると共に目的に応じてその
量を適宜に調整し得る潤滑機能を有する強化焼結
合金を提供するためになされたものである。
更に潤滑効果を付与する添加剤として前述の黒
鉛だけでなく二硫化モリブデン（MoS2）などの
層状固体潤滑材を配合してなる潤滑機能を有する
合金を提供することを目的とするものである。
本発明の要旨とする所は合計量が20vol％を超
え80vol％までの黒鉛、二硫化モリブデン等の層
状固体潤滑材をFe又はFe−Cu系の金属粉末に添
加してなる配合物の焼結圧延材よりなることを特
徴とする摩擦相手材および合計量が20vol％を超
え80vol％までの黒鉛、二硫化モリブデン等の層
状固体潤滑材をFe又はFe−Cu系の金属粉末に均
一に攪拌混合した後、これをプレス成形し、この
成形体を還元雰囲気中で第１次焼結しこの焼結体
を熱間圧延した後、更に第２次焼結しこの再焼結
体を冷間圧延することを特徴とする摩擦相手材の
製法に存するものである。
本発明において黒鉛等の固体潤滑材の合計添加
量を20vol％を超え80vol％までとしたのは摺動部
分の黒鉛等の固体潤滑材量を増し潤滑性を向上せ
しめるためで、これが20vol％以下では摩擦相手
材としての潤滑性に劣り、又80vol％を超えると
摩擦相手材が機械的に脆くなることによる。本発
明の実施においては第１次焼結および第２次焼結
の各焼結は1000℃の温度で行われる。これはFe
又はFe−Cuのマトリツクスの焼結を行わしめし
かも黒鉛等の固体潤滑材のマトリツクス中への拡
散を回避して該固体潤滑材による潤滑機能を発揮
せしめるためである。本発明で言う摩擦相手材は
デイスクロータ等の摩擦相手板である。
〔実施例および作用〕
以下に本発明を実施例に基づき説明する。
実施例 １
第１表に示す如き組成配合となるよう金属粉末
及び層状固体潤滑材（黒鉛）を配合し、この配合
粉末を均一に攪拌混合する。
第１表
組 成 Fe Cu 黒鉛
配 合（wt％） 70 20 10
この配合物を一定量を秤量しプレス金型に入れ
3.0ton／cm2の成形圧で加圧し一定の形状とし、こ
の成形体を還元雰囲気中において1000℃の温度で
60分間熱処理して母材金属粉末を金属結合させ必
要強度を持つた焼結体を作る。これが一次焼結工
程であり、この焼結体は密度を理論値（100％）
に近づけ強靭化するため熱間ローラ圧延される。
この圧延により焼結体の密度は95％程度まで高め
られ強靭化される。
次にこの強度を更に向上させるため1000℃の温
度で30分間第２次焼結を行ない前記金属結合状態
を更に強固にする。この第２次焼結で生じた歪を
矯正するため冷間ローラ圧延が行なわれ、最終目
的に応じたサイズに切断加工して製品が得られ
る。
以上の製造工程をブロツク図で表わすと下記の
ごとくになる。
配合→攪拌→成形→第１次焼結→熱間ローラ圧
延→第２次焼結→冷間ローラ圧延→切断加工→最
終製品
このようにして得られた黒鉛分散焼結合金は優
れた潤滑機能を有し、又強度も十分である。
実施例 ２
金属粉末に添加する層状固体潤滑材として黒鉛
ではなくMoS2を用いたものである。その他の組
成配合及び製造方法は実施例１と同様とした。
MoS2は黒鉛と同様MoとＳとの層状格子構造
を形成し優れた潤滑性能を有しこれを添加せしめ
る焼結合金の潤滑機能を向上させる。
実施例 ３
実施例１又は２によつて得られる潤滑機能を有
する焼結合金を用いて相手材（摺動材）を構成す
る。これによりこの相手材と摩擦材（ライニング
材）とからなる摩擦組合せにおいて、摩擦性能の
安定化及び摩擦低減を図ると共に相手材自体の損
傷を軽減することができる。
また層状固体潤滑材はFe又はFe−Cu系の母材
に最高80vol％まで添加することができ、この範
囲内で添加量を調整することにより相手材の強度
及び潤滑性能を変化させ前記摩擦組合せにおける
摩擦条件の範囲を最適に設定することができる。
更に本発明の摩擦相手材は母材をFe又はFe−
Cu系で構成するため高温における強度及び耐摩
耗性にも優れており高温、高速など吸収エネルギ
の大きな用途での使用も可能である。
〔発明の効果〕
以上本発明は優れた効果を奏するものである
が、本発明品の特徴を一層明らかにするために従
来品との相違をまとめると第２表の如くなる。
[Industrial Application Field] The present invention aims to improve the mating material of a friction material, specifically, to improve the performance of the friction material (friction material and mating material), the mating material has a lubricating function to stabilize the friction performance and to improve the performance of the friction material (friction material and mating material). The present invention relates to a friction mating material that can reduce friction and damage to the mating material, and a method for manufacturing the same. [Conventional technology] Conventionally, in friction combinations consisting of a friction material (lining material) and a mating material (sliding material), the mating material was based on the concept of a permanent structural material, and any defects in friction performance were attributed to the friction material. It was understood that this was the cause, and the solution was to improve the friction material. Currently, cast iron is the most widely used material for forming this type of mating material, and the lubrication effect of the very small amount of free graphite (approximately 3 wt% C) present in the cast iron structure is superior to that of the mating material. This is because it provides improved friction performance. Fe-based sintered alloys containing layered solid lubricants such as graphite and molybdenum disulfide have been known, but the total proportion of solid layered lubricants such as graphite is 20%.
If this is used as a friction partner plate, sufficient performance as a friction partner material cannot be obtained. [Problems to be solved by the invention] Therefore, the present inventor focused on the fact that even with this level of graphite, it is possible to provide a counterpart material that is significantly superior to other materials, such as steel (SS material, SC material). By further increasing the graphite content of the lever and adjusting this content, we will be able to commercialize a mating material that has strength and lubrication effect according to the purpose and change the range of friction conditions as appropriate, which was previously considered difficult. That's what I was aiming for. However, since graphite has a large specific gravity difference with metal and has poor wettability, there has been a problem in that it is difficult to form an alloy by increasing the amount of graphite added. In contrast, a method has been developed in which graphite particles are plated using Cu or Al as a base material, a special lubricant is added to improve wettability with the metal, and a graphite dispersion cast alloy is obtained by high-pressure casting. . According to this method, graphite up to 20vol%
However, due to the strength constraints of the mold due to high-pressure casting, it is limited to base materials made of metals with relatively low melting points, such as Cu-based and Al-based metals. [Means for Solving the Problems] The present invention uses Fe or Fe-Cu base material, which can be used in applications with large absorbed energy such as high temperatures and high speeds, and the amount of graphite added is greater than 20 vol% and 80 vol%.
This was done in order to provide a strengthened sintered alloy which has a lubricating function that can be further increased in width and whose amount can be adjusted appropriately depending on the purpose. Furthermore, it is an object of the present invention to provide an alloy having a lubricating function, which contains not only the above-mentioned graphite but also a layered solid lubricant such as molybdenum disulfide (MoS 2 ) as an additive for imparting a lubricating effect. The gist of the present invention is the sintering of a compound in which a layered solid lubricant such as graphite or molybdenum disulfide is added to Fe or Fe-Cu metal powder in a total amount exceeding 20 vol% and up to 80 vol%. A friction partner material characterized by being made of rolled material and a layered solid lubricant such as graphite or molybdenum disulfide in a total amount exceeding 20 vol% and up to 80 vol% are uniformly stirred and mixed into Fe or Fe-Cu metal powder. After that, this is press-formed, this compact is first sintered in a reducing atmosphere, this sintered body is hot-rolled, and then the second sintering is performed, and this re-sintered body is cold-rolled. The present invention resides in a method for manufacturing a friction mating material characterized by the following. In the present invention, the total amount of solid lubricants such as graphite added exceeds 20 vol% and is up to 80 vol% in order to increase the amount of solid lubricants such as graphite in the sliding parts and improve lubricity, and this is 20 vol% or less. However, if the content exceeds 80 vol%, the friction material becomes mechanically brittle. In the practice of the present invention, each of the primary sintering and the secondary sintering is performed at a temperature of 1000°C. This is Fe
Alternatively, the Fe--Cu matrix is sintered, and the solid lubricant such as graphite is prevented from diffusing into the matrix so that the solid lubricant can exert its lubricating function. The friction partner material referred to in the present invention is a friction partner plate such as a disc rotor. [Examples and Effects] The present invention will be explained below based on Examples. Example 1 Metal powder and layered solid lubricant (graphite) are blended to have the composition shown in Table 1, and the blended powder is uniformly stirred and mixed. Table 1 Composition Fe Cu Graphite blend (wt%) 70 20 10 Weigh a certain amount of this blend and put it into a press mold.
The molded body was pressurized with a molding pressure of 3.0 ton/cm 2 to a certain shape, and the molded body was molded at a temperature of 1000°C in a reducing atmosphere.
Heat treatment is performed for 60 minutes to bond the base metal powder and create a sintered body with the necessary strength. This is the primary sintering process, and this sintered body has a density of the theoretical value (100%).
It is hot rolled to make it tougher.
This rolling increases the density of the sintered body to about 95% and makes it tougher. Next, in order to further improve this strength, secondary sintering is performed at a temperature of 1000° C. for 30 minutes to further strengthen the metal bonding state. Cold roller rolling is performed to correct the distortion caused by this secondary sintering, and the product is obtained by cutting into a size according to the final purpose. A block diagram of the above manufacturing process is shown below. Compounding → Stirring → Forming → First sintering → Hot roller rolling → Second sintering → Cold roller rolling → Cutting → Final product The graphite dispersed sintered alloy obtained in this way has excellent lubrication function. It also has sufficient strength. Example 2 MoS 2 was used instead of graphite as a layered solid lubricant added to metal powder. Other compositions and manufacturing methods were the same as in Example 1. MoS 2 forms a layered lattice structure of Mo and S, similar to graphite, and has excellent lubrication performance, and improves the lubrication function of the sintered alloy to which it is added. Example 3 A mating material (sliding material) is constructed using the sintered alloy having a lubricating function obtained in Example 1 or 2. As a result, in the friction combination consisting of the mating material and the friction material (lining material), it is possible to stabilize the friction performance and reduce friction, and to reduce damage to the mating material itself. Furthermore, layered solid lubricants can be added to Fe or Fe-Cu base materials up to a maximum of 80 vol%, and by adjusting the amount added within this range, the strength and lubrication performance of the mating material can be changed and the friction combination can be adjusted. The range of friction conditions can be set optimally. Furthermore, the friction partner material of the present invention has a base material of Fe or Fe-
Since it is made of Cu, it has excellent strength and wear resistance at high temperatures, and can be used in applications that require a large amount of absorbed energy, such as at high temperatures and high speeds. [Effects of the Invention] The present invention has excellent effects as described above, but in order to further clarify the characteristics of the product of the present invention, the differences from conventional products are summarized as shown in Table 2.
【表】【table】
Claims (1)
二硫化モリブデン等の層状固体潤滑材をFe又は
Fe−Cu系の金属粉末に添加してなる配合物の焼
結圧延材よりなることを特徴とする摩擦相手材。 ２ 合計量が20vol％を超え80vol％までの黒鉛、
二硫化モリブデン等の層状固体潤滑材をFe又は
Fe−Cu系の金属粉末に均一に攪拌混合した後、
これをプレス成形し、この成形体を還元雰囲気中
で第１次焼結しこの焼結体を熱間圧延した後、更
に第２次焼結しこの再焼結体を冷間圧延すること
を特徴とする摩擦相手材の製法。[Scope of Claims] 1. Graphite with a total amount exceeding 20 vol% and up to 80 vol%,
Fe or layered solid lubricant such as molybdenum disulfide
A friction mating material characterized by being made of a sintered and rolled material of a compound added to Fe-Cu metal powder. 2 Graphite with a total amount exceeding 20vol% and up to 80vol%,
Fe or layered solid lubricant such as molybdenum disulfide
After uniformly stirring and mixing the Fe-Cu metal powder,
This is press-formed, this molded body is first sintered in a reducing atmosphere, this sintered body is hot rolled, and then the second sintered body is further sintered and this re-sintered body is cold rolled. Characteristic manufacturing method for friction mating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4467679A JPS55138055A (en) | 1979-04-12 | 1979-04-12 | Sintered alloy having lubrication function, preparation of the same, and friction mate-material using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4467679A JPS55138055A (en) | 1979-04-12 | 1979-04-12 | Sintered alloy having lubrication function, preparation of the same, and friction mate-material using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55138055A JPS55138055A (en) | 1980-10-28 |
| JPS6347783B2 true JPS6347783B2 (en) | 1988-09-26 |
Family
ID=12698038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4467679A Granted JPS55138055A (en) | 1979-04-12 | 1979-04-12 | Sintered alloy having lubrication function, preparation of the same, and friction mate-material using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55138055A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9310031D0 (en) * | 1993-05-15 | 1993-06-30 | G B Tools Components Export | Manufacture of bonded articles |
| US5501728A (en) * | 1994-07-22 | 1996-03-26 | Brake Pro, Inc. | Friction material |
| CN106141891A (en) * | 2016-06-17 | 2016-11-23 | 上海鸿宁珩磨机械有限公司 | Abrasive machining device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5271310A (en) * | 1975-12-12 | 1977-06-14 | Nat Res Inst Metals | Method of producing fibreereinforced type ironnbased composite material |
-
1979
- 1979-04-12 JP JP4467679A patent/JPS55138055A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5271310A (en) * | 1975-12-12 | 1977-06-14 | Nat Res Inst Metals | Method of producing fibreereinforced type ironnbased composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55138055A (en) | 1980-10-28 |
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