JP3325033B2 - Multi-layer sintered sliding member and manufacturing method thereof - Google Patents
Multi-layer sintered sliding member and manufacturing method thereofInfo
- Publication number
- JP3325033B2 JP3325033B2 JP34791191A JP34791191A JP3325033B2 JP 3325033 B2 JP3325033 B2 JP 3325033B2 JP 34791191 A JP34791191 A JP 34791191A JP 34791191 A JP34791191 A JP 34791191A JP 3325033 B2 JP3325033 B2 JP 3325033B2
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- mass
- layer
- powder
- mixed powder
- sliding member
- Prior art date
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- Powder Metallurgy (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、鋼板上に潤滑性物質と
して黒鉛を少なくとも3質量%以上分散含有した銅を主
成分とする焼結合金層を一体に接合した複層焼結摺動部
材、具体的には鋼板上に接合層を介して潤滑性物質とし
て黒鉛を少なくとも3質量%以上分散含有したアルミニ
ウム青銅系合金層を一体に接合した複層焼結摺動部材な
らびにその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer sintered sliding member in which a sintered alloy layer containing copper as a main component and containing at least 3% by mass of graphite as a lubricating substance is integrally joined on a steel plate. More specifically, the present invention relates to a multilayer sintered sliding member in which an aluminum-bronze-based alloy layer containing at least 3% by mass or more of graphite as a lubricating substance dispersed on a steel plate via a bonding layer is integrally bonded, and a method for producing the same. It is.
【0002】[0002]
【従来の技術】従来より、潤滑性物質として黒鉛を分散
含有した銅系焼結合金層を薄鋼板上に一体に接合してな
る複層焼結摺動部材は、例えば特公昭54−29661
号公報などにより公知である。この複層焼結摺動部材は
焼結合金層を内側にして巻いて円筒状とした、所謂巻き
ブッシュとして広く使用されている。2. Description of the Related Art Conventionally, a multi-layer sintered sliding member in which a copper-based sintered alloy layer containing graphite dispersedly contained as a lubricating substance is integrally joined to a thin steel plate is disclosed in, for example, Japanese Patent Publication No. 54-29661.
It is publicly known from Japanese Patent Publication No. This multilayer sintered sliding member is widely used as a so-called wound bush, which is wound with the sintered alloy layer inside to form a cylindrical shape.
【0003】上記摺動部材は摺動面をなす焼結合金層が
薄鋼板上に一体に接合されているため、自ずから使用範
囲が限定され、衝撃荷重や高荷重が作用する過酷な用途
においてはそのまま適用することができない。[0003] In the above-mentioned sliding member, since the sintered alloy layer forming the sliding surface is integrally joined to the thin steel plate, the range of use is naturally limited, and in a severe application where an impact load or a high load acts, It cannot be applied as it is.
【0004】上述した衝撃荷重等の過酷な用途への適用
を可能とするべく、本出願人は先に特公昭56−122
88号を提案した。すなわち、特公昭56−12288
号は、潤滑性物質として少なくとも3重量%以上分散含
有した銅を主成分とする焼結合金すべり層が鋼板上に被
着されて複層鋼板が形成されており、該複層鋼板は別途
用意された鋼板に燐青銅薄板を介して一体に接合されて
なる複層焼結摺動部材であり、焼結合金すべり層として
黒鉛を分散含有した燐青銅あるいは鉛青銅を具体例とし
て開示している。[0004] In order to enable application to severe applications such as the above-mentioned impact load, the present applicant has previously published Japanese Patent Publication No. 56-122.
No.88 was proposed. That is, Japanese Patent Publication No. 56-12288
No. 2 is a multi-layer steel sheet formed by applying a slip layer of a sintered alloy mainly composed of copper dispersed and containing at least 3% by weight or more as a lubricating substance on a steel sheet, and the multi-layer steel sheet is prepared separately. Is a multi-layer sintered sliding member integrally joined to a finished steel plate via a phosphor bronze thin plate, and discloses, as a specific example, phosphor bronze or lead bronze containing graphite dispersedly as a sintered alloy sliding layer. .
【0005】[0005]
【発明が解決しようとする課題】上記特公昭56−12
288号に開示された焼結すべり材は、前述した摺動部
材に比べ耐荷重性能を向上させるものであったが、衝撃
荷重等の過酷な用途への適用には焼結合金層の摺動特
性、機械的性質などの面で満足の行くものではなかっ
た。この種焼結摺動部材においては、その性能は鋼板上
に一体に接合される焼結合金層の潤滑性、耐摩耗性など
の摺動特性、焼結合金層の強度、硬度などの機械的性
質、さらには焼結合金層と鋼板との接合性に左右される
ものである。SUMMARY OF THE INVENTION The above Japanese Patent Publication No. 56-12
Although the sintered sliding material disclosed in Japanese Patent No. 288 has improved load-bearing performance as compared with the above-described sliding member, the sliding of the sintered alloy layer is not suitable for severe applications such as impact load. It was not satisfactory in terms of properties and mechanical properties. The performance of this type of sintered sliding member depends on the sliding properties such as lubrication and abrasion resistance of the sintered alloy layer integrally joined to the steel plate, and the mechanical properties such as the strength and hardness of the sintered alloy layer. It depends on the properties and further on the bonding property between the sintered alloy layer and the steel sheet.
【0006】本発明者らは、摺動部材用途に広く使用さ
れているアルミニウム青銅に着目し、このアルミニウム
青銅から成る焼結合金層を鋼板上に一体に接合すること
により、衝撃荷重等の過酷な用途への適用を可能とする
ものと考え、鋭意研究を行った。The present inventors have focused on aluminum bronze widely used for sliding members, and joined a sintered alloy layer made of this aluminum bronze onto a steel plate integrally, thereby obtaining severe impact load and the like. We thought that it would be possible to apply it to various uses, and conducted intensive research.
【0007】しかしながら、研究過程において、アルミ
ニウム青銅の焼結性および鋼板上への一体接合性に非常
な困難性を見出した。すなわち、アルミニウム粉末ある
いはアルミニウムを含む合金粉末は粉末の表層に熱的に
安定なアルミナ(Al2O3)の皮膜があるため、焼結
時のアルミニウムの液相の流れを妨げ、焼結の進行を遅
くしたり、あるいは中性もしくは還元性雰囲気中ではア
ルミナ皮膜が最後まで残り粒子間の結合を弱くする、と
いう点である。[0007] However, during the course of the research, it was found that the sinterability of aluminum bronze and the integral joining on a steel sheet were extremely difficult. That is, since the aluminum powder or the alloy powder containing aluminum has a thermally stable alumina (Al 2 O 3 ) film on the surface layer of the powder, the flow of the liquid phase of aluminum at the time of sintering is hindered and the sintering proceeds. Or in a neutral or reducing atmosphere, the alumina coating remains to the end and weakens the bonds between the particles.
【0008】本発明者らは、上記研究過程において知見
したアルミニウム青銅の焼結性および鋼板上への一体接
合性の困難さを技術的課題とし、さらに研究を進めた結
果、一定割合の水素化チタンを配合することにより、焼
結過程においてアルミニウム粉末表層のアルミナ皮膜を
破壊して焼結を可能とすると共に接合層を介在させるこ
とにより鋼板上への一体接合性を可能とすることを見出
した。本発明は、上記知見に基づきなされたもので、潤
滑性物質として黒鉛を分散含有したアルミニウム青銅か
ら成る焼結合金層を接合層を介して鋼板上に一体に接合
した複層焼結摺動部材ならびにその製造方法を得ること
を目的とするものである。[0008] The inventors of the present invention set the technical problem of the sinterability of aluminum bronze and the difficulty of integral joining on a steel sheet, which were found in the above-mentioned research process. Incorporating titanium, the alumina film on the surface of the aluminum powder was broken during the sintering process, enabling sintering and interposing a bonding layer to enable integrated bonding on the steel plate. . The present invention has been made based on the above findings, and is a multilayer sintered sliding member in which a sintered alloy layer made of aluminum bronze containing graphite dispersedly contained as a lubricating substance is integrally joined to a steel sheet via a joining layer. And a method for producing the same.
【0009】[0009]
【課題を解決するための手段】上述した目的を達成する
べく、本発明はつぎの手段を採る。すなわち、本発明の
第1の目的は、アルミニウム5〜13質量%、鉄3〜6
質量%、黒鉛3〜8質量%、水素化チタンのチタン成分
として0.1〜1.5質量%、残部銅から成る焼結合金
層が鋼板上に、錫5〜10質量%、燐0.1〜1.0質
量%、残部銅から成る燐青銅の接合層を介して一体に接
合されてなる複層焼結摺動部材を提供することにある。In order to achieve the above object, the present invention employs the following means. That is, a first object of the present invention is to provide aluminum of 5 to 13% by mass and iron of 3 to 6%.
5 to 10% by mass of tin, 5 to 10% by mass of tin, and 0.1 to 1.5% by mass of a titanium component of titanium hydride. An object of the present invention is to provide a multi-layer sintered sliding member integrally joined via a phosphor bronze joining layer of 1 to 1.0% by mass, the balance being copper.
【0010】また、本発明の第2の目的は、上記複層焼
結摺動部材の製造方法を提供することにある。A second object of the present invention is to provide a method for manufacturing the above-mentioned multilayer sintered sliding member.
【0011】さらに、本発明の複層焼結摺動部材は、そ
の使用目的、用途に応じて含油処理を施すことにより含
油複層焼結摺動部材としての適用を可能とするものであ
る。Further, the multi-layer sintered sliding member of the present invention can be applied as an oil-containing multi-layer sintered sliding member by subjecting it to an oil-impregnating treatment in accordance with the intended purpose and application.
【0012】上述した成分組成から成る複層焼結摺動部
材において、黒鉛(C)成分は焼結組織中に分散含有さ
れて固体潤滑作用をなすもので、固体潤滑作用を発揮さ
せるためには少なくとも3質量%の配合量が必要とされ
る。しかし、8質量%を超えて配合すると、焼結合金層
の機械的強度が損われるのと焼結性を低下させるため、
その配合量の上限は8質量%が限度である。したがっ
て、黒鉛成分の配合量は3〜8質量%、就中4〜6質量
%が適当である。In the multilayer sintered sliding member having the above-mentioned composition, the graphite (C) component is dispersed and contained in the sintered structure to perform a solid lubrication function. A loading of at least 3% by weight is required. However, if the content exceeds 8% by mass, the mechanical strength of the sintered alloy layer is impaired and the sinterability is reduced.
The upper limit of the amount is 8% by mass. Therefore, the compounding amount of the graphite component is suitably 3 to 8% by mass, especially 4 to 6% by mass.
【0013】アルミニウム(Al)成分は焼結過程にお
いて液相を生じ、主成分をなす銅(Cu)成分に拡散し
て固溶体を形成し、焼結マトリックスの硬度および強度
の向上に寄与する。そして、その配合量が5質量%以下
では上述した効果が認められず、また13質量%を超え
て配合した場合には焼結マトリックスの硬度を高めるが
同時に脆性を増し、焼結合金層の強度を弱めることにな
る。したがって、アルミニウム粉末の配合量は5〜13
質量%、就中8〜10質量%が適当である。The aluminum (Al) component generates a liquid phase during the sintering process, and diffuses into the copper (Cu) component, which is the main component, to form a solid solution, which contributes to the improvement of the hardness and strength of the sintered matrix. When the content is less than 5% by mass, the above-mentioned effects are not observed. When the content exceeds 13% by mass, the hardness of the sintered matrix is increased, but at the same time, the brittleness is increased, and the strength of the sintered alloy layer is increased. Will be weakened. Therefore, the amount of the aluminum powder is 5-13.
% Is suitable, especially 8 to 10% by weight.
【0014】鉄(Fe)成分は焼結マトリックスを微細
化し、焼結マトリックスの強度向上に寄与する。そし
て、その配合量が3質量%以下では効果が認められず、
また6質量%を超えて配合すると反って焼結マトリック
スの強度低下を来すことになる。したがって、鉄成分の
配合量は3〜6質量%、就中4〜6質量%が適当であ
る。The iron (Fe) component makes the sintered matrix finer and contributes to improving the strength of the sintered matrix. And when the compounding amount is 3% by mass or less, the effect is not recognized,
Also, if the content exceeds 6% by mass, the strength of the sintered matrix is reduced. Therefore, the compounding amount of the iron component is suitably 3 to 6% by mass, especially 4 to 6% by mass.
【0015】水素化チタン(TiH2)成分は、水素に
よるアルミニウム粉末表層のアルミナ皮膜を還元して焼
結性を高める作用をなす。また、チタンは焼結マトリッ
クスの結晶を微細化し、焼結マトリックスの強度および
硬度を高める作用をなす。そして、その配合量がチタン
成分として0.1質量%以下では上述した焼結性および
強度の向上に効果が現れず、またチタン成分として1.
5質量%を超えて配合すると焼結マトリックス中への分
散割合が過剰となり、反って強度の低下を来すことにな
る。したがって、水素化チタンの配合量はチタン成分と
して0.1〜1.5質量%、就中0.2〜1.0質量%
が適当である。The titanium hydride (TiH 2 ) component has the effect of reducing the alumina film on the surface of the aluminum powder with hydrogen to enhance the sinterability. Titanium also has the effect of making the crystals of the sintered matrix finer and increasing the strength and hardness of the sintered matrix. If the compounding amount is 0.1% by mass or less as a titanium component, no effect is exhibited in improving the above-described sinterability and strength.
If the amount is more than 5% by mass, the dispersion ratio in the sintered matrix becomes excessive, and the strength is lowered. Therefore, the compounding amount of titanium hydride is 0.1 to 1.5% by mass as a titanium component, preferably 0.2 to 1.0% by mass.
Is appropriate.
【0016】上述した成分組成に対し、さらに3質量%
以下のニッケル(Ni)成分および1質量%以下のマン
ガン(Mn)成分を配合することができる。これらニッ
ケル成分およびマンガン成分を配合することにより、焼
結マトリックスの強度の向上を図ることができる。3% by mass based on the above-mentioned composition.
The following nickel (Ni) component and 1% by mass or less of manganese (Mn) component can be blended. By mixing the nickel component and the manganese component, the strength of the sintered matrix can be improved.
【0017】上述した成分組成から成る混合粉末は、予
め鋼板から成る裏金上に形成された燐青銅から成る接合
層を介して焼結され、焼結摺動層として該裏金上に接合
一体化される。接合層を形成する燐青銅は、錫5〜10
質量%、燐0.1〜1.0質量%、残部銅から成る。The mixed powder having the above-described component composition is sintered via a bonding layer made of phosphor bronze formed on a back metal made of a steel plate in advance, and is joined and integrated on the back metal as a sintered sliding layer. You. Phosphor bronze forming the bonding layer is tin 5-10.
% By mass, phosphorus by 0.1 to 1.0% by mass, the balance being copper.
【0018】以下、複層焼結摺動部材の製造方法につい
て具体的に説明する。Hereinafter, a method for manufacturing a multilayer sintered sliding member will be specifically described.
【0019】複層焼結摺動部材を形成する裏金としての
鋼板は、一般構造用圧延鋼板(JIS−G−3101)
が使用される。The steel plate as the back metal forming the multilayer sintered sliding member is a rolled steel plate for general structure (JIS-G-3101).
Is used.
【0020】この鋼板上に形成される接合層としては、
本発明では錫5〜10質量%、燐0.1〜1.0質量
%、残部銅から成る混合粉末を使用し、(1)該混合粉
末を鋼板表面に一様な厚さに散布する方法、(2)該混
合粉末を鋼板表面に火焔溶射またはプラズマ溶射により
皮膜として形成する方法、(3)前記摺動層を形成する
混合粉末と接合層を形成する混合粉末とを圧延により二
層の圧延シートを形成する方法、などが使用される。The bonding layer formed on the steel sheet includes:
In the present invention, a mixed powder composed of 5 to 10% by mass of tin, 0.1 to 1.0% by mass of phosphorus and the balance of copper is used, and (1) a method of spraying the mixed powder to a uniform thickness on a steel plate surface. (2) a method in which the mixed powder is formed as a coating on the surface of the steel sheet by flame spraying or plasma spraying; (3) a mixed powder forming the sliding layer and a mixed powder forming the bonding layer are rolled into two layers. A method of forming a rolled sheet is used.
【0021】〔第1の製造方法〕 アルミニウム5〜13質量%、鉄3〜6質量%、黒鉛3
〜8質量%、水素化チタンのチタン成分として0.1〜
1.5質量%、残部銅から成る混合粉末、あるいはこの
混合粉末にさらにニッケル3質量%以下およびマンガン
1質量%以下を混合した混合粉末に粉末結合剤の1〜1
5質量%水溶液を該混合粉末に対し0.1〜5.0質量
%添加し、均一に混合して該混合粉末に湿潤性を与えた
摺動層用混合粉末を形成する。[First Production Method] Aluminum 5 to 13% by mass, iron 3 to 6% by mass, graphite 3
~ 8 mass%, 0.1 ~ as titanium component of titanium hydride
1.5 mass%, mixed powder consisting of the balance copper, or mixed powder further mixed with 3 mass% or less of nickel and 1 mass% or less of manganese,
A 5% by mass aqueous solution is added in an amount of 0.1 to 5.0% by mass with respect to the mixed powder, and the mixture is uniformly mixed to form a mixed powder for a sliding layer having wettability to the mixed powder.
【0022】粉末結合剤として使用できるものとして
は、ヒドロキシプロピルセルロース(HPC)、ポリビ
ニルアルコール(PVA)、カルボキシメチルセルロー
ス(CMC)、ヒドロキシエチルセルロース(HE
C)、メチルセルロース(MC)、ゼラチン、アラビア
ゴムおよびスターチなどが挙げられ、中でもHPCの使
用が好ましい。粉末結合剤の溶媒として水あるいは水以
外にエチルアルコール等の親水性化合物の5〜20質量
%の水溶液を使用することもできる。Examples of powder binders that can be used include hydroxypropyl cellulose (HPC), polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), and hydroxyethyl cellulose (HE).
C), methylcellulose (MC), gelatin, gum arabic, starch and the like. Among them, HPC is preferred. As a solvent for the powder binder, water or an aqueous solution of a hydrophilic compound such as ethyl alcohol of 5 to 20% by mass in addition to water can be used.
【0023】粉末結合剤は上記溶媒に対して1〜15質
量%加えて水溶液にするのが好ましい。該粉末結合剤水
溶液の添加割合は、混合粉末に対して0.1〜5.0質
量%が好ましく、これ以上の量を添加すると焼結マトリ
ックス中に制御できないポア(孔)が増加し、得られる
焼結層の強度および耐摩耗性を低下させる。It is preferable to add 1 to 15% by mass of the powder binder to the above solvent to make an aqueous solution. The addition ratio of the aqueous powder binder solution is preferably from 0.1 to 5.0% by mass with respect to the mixed powder. If the amount is more than that, uncontrollable pores (pores) increase in the sintered matrix, and The strength and wear resistance of the resulting sintered layer.
【0024】上記湿潤性が与えられた混合粉末は、つい
でコンベアおよびホッパーによって圧延ロールに供給さ
れ、該圧延ロールによって該混合粉末は圧延シート(圧
粉体シート)に形成される。該混合粉末の圧延は双ロー
ルを有する横型圧延機が使用される。該横型圧延機のロ
ールへの混合粉末の供給量を一定にすれば、ロール隙間
を変えることで圧延荷重が変化し、圧延シートの密度お
よび厚さを調整することが可能である。例えば、ロール
速度を0.1〜1.0m/minとし、ロール隙間を
0.4〜1.0mmとすると、密度5.5〜6.7g/
cm3、厚さ1.38〜1.83mmの圧延シートが得
られる。The wetted mixed powder is then supplied to a rolling roll by a conveyor and a hopper, and the roll is used to form the mixed powder into a rolled sheet (compacted sheet). For the rolling of the mixed powder, a horizontal rolling mill having twin rolls is used. If the supply amount of the mixed powder to the rolls of the horizontal rolling mill is kept constant, the rolling load changes by changing the roll gap, and the density and thickness of the rolled sheet can be adjusted. For example, if the roll speed is 0.1 to 1.0 m / min and the roll gap is 0.4 to 1.0 mm, the density is 5.5 to 6.7 g / min.
A rolled sheet having a cm 3 and a thickness of 1.38 to 1.83 mm is obtained.
【0025】裏金として、厚さ10〜20mmの一般構
造用圧延鋼板を用意し、該鋼板の表面に錫5〜10質量
%、燐0.1〜1.0質量%、残部銅から成る混合粉末
を散布し、ローラ掛けにより0.3〜0.7mmの一様
な厚さの接合層を形成する。As a backing metal, a rolled steel sheet for general structural use having a thickness of 10 to 20 mm is prepared, and a mixed powder comprising 5 to 10% by mass of tin, 0.1 to 1.0% by mass of phosphorus, and the balance copper is provided on the surface of the steel plate. And a bonding layer having a uniform thickness of 0.3 to 0.7 mm is formed by rolling.
【0026】該鋼板表面に形成した一様な厚さの接合層
の上に、前記圧延シートを重ね合わせ、これを中性もし
くは還元性雰囲気に調整した加熱炉内に置き、圧力下で
該圧延シートの焼結と同時に該接合層を介して該圧延シ
ートの鋼板上への接合を行わせ、鋼板上に接合層を介し
て一体に接合した複層焼結摺動部材を得る。The rolled sheet is superimposed on the joining layer having a uniform thickness formed on the surface of the steel sheet, and the rolled sheet is placed in a heating furnace adjusted to a neutral or reducing atmosphere. At the same time as the sintering of the sheet, the rolled sheet is joined to the steel sheet via the joining layer, and a multilayer sintered sliding member integrally joined to the steel sheet via the joining layer is obtained.
【0027】〔第2の製造方法〕 前記第1の方法と同様の方法で、圧延シートを得る。裏
金として、上記第1の方法と同様の鋼板を用意し、該鋼
板表面に錫5〜10質量%、燐0.1〜1.0質量%、
残部銅から成る混合粉末を火焔溶射またはプラズマ溶射
して0.3〜0.7mmの接合層を形成する。鋼板表面
に形成した溶射による接合層の上に、前記圧延シートを
重ね合わせ、これを中性もしくは還元性雰囲気に調整し
た加熱炉内に置き、圧力下で該圧延シートの焼結と同時
に該接合層を介して該圧延シートの鋼板上への接合を行
わせ、鋼板上に接合層を介して一体に接合した複層焼結
摺動部材を得る。[Second Manufacturing Method] A rolled sheet is obtained in the same manner as in the first method. As the back metal, a steel sheet similar to that of the first method is prepared, and tin 5 to 10% by mass, phosphorus 0.1 to 1.0% by mass,
The mixed powder consisting of the remaining copper is flame-sprayed or plasma-sprayed to form a bonding layer of 0.3 to 0.7 mm. The rolled sheet is superimposed on the thermal sprayed bonding layer formed on the surface of the steel sheet, and placed in a heating furnace adjusted to a neutral or reducing atmosphere. The rolled sheet is joined to the steel sheet via the layer, and a multilayer sintered sliding member integrally joined to the steel sheet via the joining layer is obtained.
【0028】〔第3の製造方法〕 前記摺動層用混合粉末と接合層用混合粉末を用意し、該
横型圧延機の一方のロール側から摺動層用混合粉末を、
他方のロール側から接合層用混合粉末をそれぞれ供給
し、摺動層用混合粉末と接合層用混合粉末とが一体とな
った二層の圧延シートを形成する。接合層用混合粉末
は、錫5〜10質量%、燐0.1〜1.0質量%、残部
銅から成る混合粉末に粉末結合剤の1〜15質量%水溶
液を該混合粉末に対し0.1〜5.0質量%添加し、均
一に混合して該混合粉末に湿潤性を与えたものである。[Third Production Method] The mixed powder for the sliding layer and the mixed powder for the bonding layer are prepared, and the mixed powder for the sliding layer is prepared from one roll side of the horizontal rolling mill.
The mixed powder for the joining layer is supplied from the other roll side to form a two-layer rolled sheet in which the mixed powder for the sliding layer and the mixed powder for the joining layer are integrated. The mixed powder for the bonding layer is composed of a mixed powder composed of 5 to 10% by mass of tin, 0.1 to 1.0% by mass of phosphorus, and the balance of copper, and an aqueous solution of 1 to 15% by mass of a powder binder added to the mixed powder. 1 to 5.0% by mass is added and uniformly mixed to give wettability to the mixed powder.
【0029】この二層圧延シートの製造方法をより具体
的に説明する。図1はその製造装置(横型圧延機)を示
すもので、図中符号1は双ロール、2は一方のロール側
に配されたロードセル、3は他方のロール側に配された
流体シリンダ、4はホッパー、5は該ホッパー4内を二
分して双ロール1間に延設された仕切り板、6は摺動層
用混合粉末供給コンベア、7は接合層用混合粉末供給コ
ンベア、8は二層圧延シートである。The method for producing the two-layer rolled sheet will be described more specifically. FIG. 1 shows a manufacturing apparatus (horizontal rolling mill), wherein reference numeral 1 denotes a twin roll, 2 denotes a load cell disposed on one roll side, 3 denotes a fluid cylinder disposed on the other roll side, Is a hopper, 5 is a partition plate which bisects the inside of the hopper 4, and is extended between twin rolls 1, 6 is a mixed powder supply conveyor for a sliding layer, 7 is a mixed powder supply conveyor for a bonding layer, and 8 is a two layer It is a rolled sheet.
【0030】仕切り板5によって二分されたホッパー4
にそれぞれコンベア6、7から摺動層用混合粉末と接合
層用混合粉末が供給される。ホッパー4に供給された混
合粉末は双ロール1間に供給され、ロール間で圧延され
て摺動層用混合粉末と接合層用混合粉末とが一体となっ
た二層圧延シートが成形される。この二層圧延シートの
摺動層側に1.4〜1.8mm、接合層側に0.3〜
0.7mmの厚さに成形される。The hopper 4 bisected by the partition plate 5
The mixed powder for the sliding layer and the mixed powder for the bonding layer are supplied from the conveyors 6 and 7, respectively. The mixed powder supplied to the hopper 4 is supplied between the twin rolls 1 and rolled between the rolls to form a two-layer rolled sheet in which the mixed powder for the sliding layer and the mixed powder for the joining layer are integrated. 1.4 to 1.8 mm on the sliding layer side and 0.3 to 0.3 mm on the joining layer side of the two-layer rolled sheet.
It is molded to a thickness of 0.7 mm.
【0031】この二層の圧延シートを前記第1の方法と
同様の鋼板上に、接合層用混合粉末から成る層を該鋼板
表面側にして重ね合わせ、これを中性もしくは還元性雰
囲気に調整した加熱炉内に置き、圧力下で該摺動層側圧
延シートの焼結と同時に該接合層を介して該圧延シート
の鋼板上への接合を行わせ、鋼板上に接合層を介して一
体に接合した複層焼結摺動部材を得る。This two-layer rolled sheet is overlaid on the same steel plate as in the first method, with a layer made of the mixed powder for a bonding layer facing the steel sheet, and adjusted to a neutral or reducing atmosphere. In the heating furnace, and sintering the rolled sheet on the sliding layer side under pressure and simultaneously bonding the rolled sheet to the steel sheet through the bonding layer, and integrally forming the bonding sheet on the steel sheet through the bonding layer. To obtain a multilayer sintered sliding member.
【0032】上述した第1、第2および第3の製造方法
における焼結工程において、焼結時の圧力は焼結マトリ
ックスの密度を増加させ、接合層を介しての焼結層と鋼
板との接合強度を向上させるもので、本発明では0.1
〜5.0kgf/cm2、好ましくは0.3〜3.0k
gf/cm2である。In the sintering step in the first, second, and third manufacturing methods described above, the pressure during sintering increases the density of the sintered matrix, and causes the sintering layer and the steel sheet to pass through the bonding layer. The purpose of the present invention is to improve the bonding strength.
55.0 kgf / cm 2 , preferably 0.3-3.0 k
gf / cm 2 .
【0033】焼結温度は焼結マトリックスに敏感に影響
を及ぼすもので、とくに温度管理には注意を必要とす
る。本発明では800〜950℃、就中850〜900
℃の範囲で行われる。焼結時間は焼結温度ほど敏感に焼
結マトリックスに影響を及ぼさないが、焼結層の機械的
強度に影響を及ぼす。本発明では30〜60分間の範囲
で良い結果が得られる。The sintering temperature has a sensitive effect on the sintering matrix, and special attention must be paid to temperature control. In the present invention, the temperature is 800 to 950 ° C, preferably 850 to 900
Performed in the range of ° C. The sintering time does not affect the sintering matrix as sensitively as the sintering temperature, but does affect the mechanical strength of the sintered layer. In the present invention, good results are obtained in the range of 30 to 60 minutes.
【0034】中性もしくは還元性雰囲気としては、アン
モニア分解ガス、窒素ガス、吸熱ガスなどが使用され
る。As the neutral or reducing atmosphere, ammonia decomposition gas, nitrogen gas, endothermic gas and the like are used.
【0035】上述した製造方法によって得られる複層焼
結摺動部材は、加圧焼結時に圧延シートの焼結と同時に
接合層の成分に液相を生じ、この液相が鋼板表面および
圧延シートに一部拡散することにより圧延シートから成
る焼結層の接合層を介しての鋼板上への接合が行われ
る。The multi-layer sintered sliding member obtained by the above-described manufacturing method produces a liquid phase in the component of the bonding layer simultaneously with the sintering of the rolled sheet during pressure sintering, and this liquid phase is formed on the surface of the steel sheet and the rolled sheet. Is joined to the steel sheet via the joining layer of the sintered layer made of the rolled sheet.
【0036】このようにして得られる複層焼結摺動部材
は、その使用目的、用途に応じて焼結層に含油処理を施
すことにより含油複層焼結摺動部材としての適用が可能
である。この含油複層焼結摺動部材においては、焼結マ
トリックス中の黒鉛による固体潤滑作用と潤滑油による
相乗効果が発揮される。The multi-layer sintered sliding member thus obtained can be applied as an oil-containing multi-layer sintered sliding member by subjecting the sintered layer to an oil-impregnating treatment according to the intended purpose and application. is there. In the oil-containing multi-layer sintered sliding member, the solid lubricating action of graphite in the sintered matrix and the synergistic effect of lubricating oil are exhibited.
【0037】[0037]
【作用】焼結合金層を形成する成分中の水素化チタンが
焼結時、アルミニウム粉末の表層のアルミナ皮膜を破壊
するので、従来困難とされていたアルミニウム青銅の焼
結を可能とする。また、水素化チタンのチタンが焼結マ
トリックスの結晶を微細化して焼結マトリックスの強度
および硬度を高め、衝撃荷重あるいは高荷重用途への適
用を可能とする。The titanium hydride in the component forming the sintered alloy layer breaks the alumina film on the surface of the aluminum powder during sintering, thereby enabling sintering of aluminum bronze which has been considered difficult. Further, the titanium of the titanium hydride makes the crystal of the sintered matrix finer to increase the strength and hardness of the sintered matrix, and can be applied to an impact load or a high load application.
【0038】[0038]
【実施例】以下、本発明を実施例に基づき詳細に説明す
る。 <実施例1> 200メッシュを通過する電解銅粉末に325メッシュ
を通過するアトマイズ・アルミニウム粉末10質量%と
240メッシュを通過する還元鉄粉末3質量%と水素化
チタン粉末のチタン成分として0.25質量%とを配合
し、V型ミキサーにて20分間混合したのち、48〜2
50メッシュの天然黒鉛粉末を5質量%配合し、再度V
型ミキサーにて5分間混合し、混合粉末を得た〔Al:
10、Fe:3、TiH2(Ti:0.25)、C:
5、Cu:81.75〕。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. <Example 1> 10% by mass of atomized aluminum powder passing through 325 mesh, 3% by mass of reduced iron powder passing through 240 mesh, and 0.25 as a titanium component of titanium hydride powder in electrolytic copper powder passing through 200 mesh. % By mass and mixed with a V-type mixer for 20 minutes.
5 mass% of natural graphite powder of 50 mesh was blended, and V
The mixture was mixed for 5 minutes using a mold mixer to obtain a mixed powder [Al:
10, Fe: 3, TiH 2 (Ti: 0.25), C:
5, Cu: 81.75].
【0039】該混合粉末に、5.26質量%のHPC水
溶液(HPC100g、エチルアルコール120mlお
よび水1780ml)を混合粉末に対し0.5質量%配
合し、5分間V型ミキサーで均一に混合して湿潤性をも
った摺動層用混合粉末を得た。An aqueous solution of 5.26% by mass of HPC (100 g of HPC, 120 ml of ethyl alcohol and 1780 ml of water) was added to the mixed powder in an amount of 0.5% by mass based on the mixed powder, and the mixture was uniformly mixed with a V-type mixer for 5 minutes. A wettable mixed powder for a sliding layer was obtained.
【0040】該混合粉末を直径603mmの双ロールを
もった横型圧延ロールにロール隙間0.5mm、ロール
速度0.3m/minの条件下で通し、密度5.70g
/cm3、厚さ1.48mmから成る圧延シート(圧粉
体シート)を成形した。The mixed powder was passed through a horizontal rolling roll having twin rolls having a diameter of 603 mm with a roll gap of 0.5 mm and a roll speed of 0.3 m / min to obtain a density of 5.70 g.
/ Cm 3 , and a rolled sheet (compacted sheet) having a thickness of 1.48 mm were formed.
【0041】鋼板として、幅170mm、長さ600m
m、厚さ10mmの一般構造用圧延鋼板を用意し、該鋼
板の表面に、錫粉末7質量%と銅−燐合金粉末の燐成分
として0.7質量%と残部銅粉末から成る混合粉末を一
様に散布し、ローラ掛けにより厚さ0.3mmの接合層
を形成した。As a steel plate, width 170 mm, length 600 m
A rolled steel sheet for general structural use having a thickness of 10 mm and a thickness of 10 mm is prepared, and a mixed powder composed of 7% by mass of tin powder, 0.7% by mass as a phosphorus component of a copper-phosphorus alloy powder and the balance of copper powder is provided on the surface of the steel plate. The mixture was sprayed uniformly, and a bonding layer having a thickness of 0.3 mm was formed by applying a roller.
【0042】前記圧延シートを幅170mm、長さ60
0mmの寸法に切断し、この圧延シートを2枚、接合層
が形成された鋼板の該接合層上に重ね合わせた。つい
で、これを900℃の温度で60分間、アンモニア分解
ガス雰囲気の加熱炉内に置き、圧力1.5kgf/cm
2をかけながら圧延シートの焼結と同時に該圧延シート
の接合層を介しての鋼板との接合を同時に行わしめたの
ち、機械加工により所望の寸法に加工し、鋼板上に接合
層を介して焼結層を一体に接合した複層焼結摺動部材を
得た。この複層焼結摺動部材の焼結層の密度は5.3g
/cm3であり、該鋼板と焼結層との接合強度は7kg
/cm2であった。該複層焼結摺動部材に含油処理を施
し、含油率20容量%の含油複層焼結摺動部材を得た。The rolled sheet is 170 mm in width and 60 in length.
The sheet was cut to a size of 0 mm, and two rolled sheets were overlaid on the joining layer of the steel sheet on which the joining layer was formed. Then, this was placed in a heating furnace in an ammonia decomposition gas atmosphere at a temperature of 900 ° C. for 60 minutes, and a pressure of 1.5 kgf / cm.
After the sintering of the rolled sheet and the joining of the rolled sheet with the steel sheet via the joining layer are simultaneously performed while applying the pressure, the workpiece is machined to a desired size, and then the steel sheet is joined to the steel sheet via the joining layer. A multilayer sintered sliding member in which the sintered layers were integrally joined was obtained. The density of the sintered layer of this multilayer sintered sliding member is 5.3 g.
/ Cm 3 , and the bonding strength between the steel sheet and the sintered layer is 7 kg.
/ Cm 2 . The multilayer sintered sliding member was subjected to an oil impregnation treatment to obtain an oil impregnated multilayer sintered sliding member having an oil content of 20% by volume.
【0043】<実施例2> 前記実施例1と同様の方法で、厚さ1.48mmの圧延
シートを得た。鋼板として実施例1と同様、幅170m
m、長さ600mm、厚さ10mmの一般構造用圧延鋼
板を用意し、該鋼板の表面に、錫粉末7質量%と銅−燐
合金粉末の燐成分として0.7質量%と残部銅粉末から
成る混合粉末を下記の条件にてプラズマ溶射した。 〔プラズマ溶射条件〕 (1)溶射ガン プラズマ溶射ガン (2)作動電流 500A (3)電圧 30V (4)アークガス アルゴン 50l/min (5)粉末ガス アルゴン 7.5l/min (6)粉末供給量 35g/min 上記溶射条件によって鋼板上に厚さ0.3mmの錫7質
量%と燐0.7質量%と残部銅から成る混合粉末の溶射
皮膜を形成した。Example 2 A rolled sheet having a thickness of 1.48 mm was obtained in the same manner as in Example 1. 170m in width as in Example 1 as a steel plate
A rolled steel sheet for general structural use having a length of 600 mm and a length of 600 mm and a thickness of 10 mm is prepared. On the surface of the steel sheet, 7 mass% of tin powder, 0.7 mass% as a phosphorus component of the copper-phosphorus alloy powder and the balance of copper powder are used. The resulting mixed powder was plasma sprayed under the following conditions. [Plasma spraying conditions] (1) Spray gun Plasma spray gun (2) Operating current 500A (3) Voltage 30V (4) Arc gas argon 50 l / min (5) Powder gas argon 7.5 l / min (6) Powder supply amount 35 g A sprayed coating of a mixed powder consisting of 7% by mass of tin, 0.7% by mass of phosphorus and the balance of copper having a thickness of 0.3 mm was formed on a steel plate under the above-mentioned spraying conditions.
【0044】前記圧延シートを幅170mm、長さ60
0mmの寸法に切断し、この圧延シートを2枚、溶射皮
膜を施した鋼板の該皮膜上に重ね合わせた。ついで、こ
れを900℃の温度で60分間、アンモニア分解ガス雰
囲気の加熱炉内に置き、圧力1.5kgf/cm2をか
けながら圧延シートの焼結と同時に該圧延シートの溶射
皮膜(接合層)を介しての鋼板との接合を同時に行わし
めたのち、機械加工により所望の寸法に加工し、鋼板上
に接合層を介して焼結層を一体に接合した複層焼結摺動
部材を得た。この複層焼結摺動部材の焼結層の密度は
5.3g/cm3であり、該鋼板と焼結層との間の接合
強度は7kg/cm2であった。該複層焼結摺動部材に
含油処理を施し、含油率20容量%の含油複層焼結摺動
部材を得た。The rolled sheet is 170 mm in width and 60 in length.
The rolled sheet was cut to a size of 0 mm, and two rolled sheets were superimposed on the thermal sprayed steel sheet. Then, this is placed in a heating furnace in an ammonia decomposition gas atmosphere at a temperature of 900 ° C. for 60 minutes, and while applying a pressure of 1.5 kgf / cm 2 , the sintering of the rolled sheet and the thermal spray coating (joining layer) of the rolled sheet are performed. After joining with the steel sheet through the joint at the same time, processed to the desired dimensions by machining, to obtain a multilayer sintered sliding member in which the sintered layer was integrally joined on the steel sheet via the joining layer Was. The density of the sintered layer of this multilayer sintered sliding member was 5.3 g / cm 3 , and the bonding strength between the steel sheet and the sintered layer was 7 kg / cm 2 . The multi-layer sintered sliding member was subjected to oil impregnation treatment to obtain an oil-impregnated multi-layer sintered sliding member having an oil content of 20% by volume.
【0045】<実施例3> 前述した図1に示す横型圧延機を使用し、ロール隙間
0.7mm、ロール速度0.1m/min、ロール荷重
88トンの条件で、仕切り板によって二分されたホッパ
ー内にそれぞれ実施例1と同様の湿潤性をもった摺動層
用混合粉末と錫粉末7質量%と銅−燐合金粉末の燐成分
として0.7質量%と残部銅粉末から成る混合粉末に
5.26質量%のHPC水溶液(HPC100g、エチ
ルアルコール120mlおよび水1780ml)を混合
粉末に対し0.5質量%配合し、5分間V型ミキサーで
均一に混合して形成した湿潤性をもった接合層用混合粉
末を装填し、二層圧延シートを成形した。得られた二層
圧延シートの厚さは2.0mmで、摺動層側に1.68
mm、接合層側に0.32mmであった。<Example 3> A hopper divided into two parts by a partition plate under the conditions of a roll gap of 0.7 mm, a roll speed of 0.1 m / min, and a roll load of 88 tons using the horizontal rolling mill shown in FIG. In the same manner, a mixed powder having the same wettability as in Example 1 for a sliding layer, a tin powder of 7% by mass, a phosphorus component of a copper-phosphorus alloy powder of 0.7% by mass and a balance of copper powder was used. Wet joint formed by mixing 5.26% by mass of an aqueous solution of HPC (100g of HPC, 120ml of ethyl alcohol and 1780ml of water) with 0.5% by mass of the mixed powder and uniformly mixing with a V-type mixer for 5 minutes. The mixed powder for layers was charged to form a two-layer rolled sheet. The thickness of the obtained two-layer rolled sheet is 2.0 mm, and 1.68 is provided on the sliding layer side.
mm and 0.32 mm on the bonding layer side.
【0046】この二層圧延シートを幅170mm、長さ
600mmの寸法に切断し、接合層側を鋼板上に向けて
重ね合わせた。以下、実施例1と同じ条件で焼結し、機
械加工により所望の寸法に加工して鋼板上に接合層を介
して焼結層を一体に接合した複層焼結摺動部材を得た。
この複層焼結摺動部材の焼結層の密度は5.1g/cm
3であり、該鋼板と焼結層との間の接合強度は8kg/
cm2であった。該複層焼結摺動部材に含油処理を施
し、含油率23容量%の含油複層焼結摺動部材を得た。The two-layer rolled sheet was cut into a size of 170 mm in width and 600 mm in length, and was laminated with the joining layer side facing the steel sheet. Hereinafter, sintering was performed under the same conditions as in Example 1, processed to a desired size by machining, and a multi-layer sintered sliding member in which the sintered layer was integrally joined to the steel sheet via the joining layer was obtained.
The density of the sintered layer of this multilayer sintered sliding member is 5.1 g / cm.
3 , and the bonding strength between the steel sheet and the sintered layer was 8 kg /
cm 2 . The multi-layer sintered sliding member was subjected to an oil impregnation treatment to obtain an oil-containing multi-layer sintered sliding member having an oil content of 23% by volume.
【0047】<実施例4> 200メッシュを通過する電解銅粉末に325メッシュ
を通過するアトマイズ・アルミニウム粉末10質量%と
240メッシュを通過する還元鉄粉末3質量%と250
メッシュを通過する電解ニッケル粉末3質量%と200
メッシュを通過するマンガン粉末1質量%と水素化チタ
ン粉末のチタン成分として0.5質量%とを配合し、V
型ミキサーにて20分間混合したのち、48〜250メ
ッシュの天然黒鉛粉末を5質量%配合し、再度V型ミキ
サーで5分間混合して混合粉末を得た〔Al10、Fe
3、Ni3、Mn1、TiH2(Ti:0.5)、C
5、Cu77.5〕。Example 4 10% by mass of atomized aluminum powder passing through 325 mesh and 3% by mass of reduced iron powder passing through 240 mesh in electrolytic copper powder passing through 200 mesh and 250%
3% by weight of electrolytic nickel powder passing through the mesh and 200
A mixture of 1% by mass of manganese powder passing through the mesh and 0.5% by mass as a titanium component of the titanium hydride powder was added.
After mixing for 20 minutes in a mold mixer, 5% by mass of natural graphite powder of 48 to 250 mesh was blended and mixed again in a V-type mixer for 5 minutes to obtain a mixed powder [Al10, Fe
3, Ni3, Mn1, TiH 2 (Ti: 0.5), C
5, Cu77.5].
【0048】該混合粉末に、5.26質量%のHPC水
溶液(HPC100g、エチルアルコール120mlお
よび水1780ml)を混合粉末に対し0.5質量%配
合し、5分間V型ミキサーで均一に混合して湿潤性をも
った摺動層用混合粉末を得た。An aqueous solution of 5.26% by mass of HPC (100 g of HPC, 120 ml of ethyl alcohol and 1780 ml of water) was added to the mixed powder in an amount of 0.5% by mass based on the mixed powder, and uniformly mixed with a V-type mixer for 5 minutes. A wettable mixed powder for a sliding layer was obtained.
【0049】ついで、前記実施例3と同様の方法で、仕
切り板によって二分されたホッパー内にそれぞれ摺動層
用混合粉末と実施例3と同様の接合層用混合粉末を装填
し、二層圧延シートを成形した。得られた二層圧延シー
トの厚さは2.0mmで、摺動層側に1.68mm、接
合層側に0.32mmであった。Then, the mixed powder for the sliding layer and the mixed powder for the bonding layer as in Example 3 were loaded into the hopper divided into two parts by the partition plate in the same manner as in Example 3, and the two layers were rolled. A sheet was formed. The thickness of the obtained two-layer rolled sheet was 2.0 mm, 1.68 mm on the sliding layer side, and 0.32 mm on the joining layer side.
【0050】この二層圧延シートを幅170mm、長さ
600mmの寸法に切断し、接合層側を鋼板上に向けて
重ね合わせた。以下、実施例1と同じ条件で焼結し、機
械加工により所望の寸法に加工して鋼板上に接合層を介
して焼結層を一体に接合した複層焼結摺動部材を得た。
この複層焼結摺動部材の焼結層の密度は5.1g/cm
3であり、該鋼板と焼結層との間の接合強度は8kg/
cm2であった。該複層焼結摺動部材に含油処理を施
し、含油率22容量%の含油複層焼結摺動部材を得た。The two-layer rolled sheet was cut into a size of 170 mm in width and 600 mm in length, and was overlapped with the joining layer side facing the steel sheet. Hereinafter, sintering was performed under the same conditions as in Example 1, processed to a desired size by machining, and a multi-layer sintered sliding member in which the sintered layer was integrally joined to the steel sheet via the joining layer was obtained.
The density of the sintered layer of this multilayer sintered sliding member is 5.1 g / cm.
3 , and the bonding strength between the steel sheet and the sintered layer was 8 kg /
cm 2 . The multi-layer sintered sliding member was subjected to an oil impregnation treatment to obtain an oil-containing multi-layer sintered sliding member having an oil content of 22% by volume.
【0051】つぎに、上述した各実施例で得た複層焼結
摺動部材について、下記の条件で摺動特性を試験した。Next, the sliding characteristics of the multilayer sintered sliding member obtained in each of the above-described examples were tested under the following conditions.
【0052】<試験条件> (1)耐荷重試験 荷重(面圧) 100kgf/cm2を1時間毎に累積負荷 速度 7m/min ストローク 80mm 相手材 ねずみ鋳鉄(FC250)研磨品 潤滑 無潤滑 (2)耐久試験 荷重(面圧) 90kgf/cm2 速度 7m/min ストローク 80mm 相手材 ねずみ鋳鉄(FC250)研磨品 潤滑 試験前に摺動面にグリース塗布 耐久回数 10万サイクル<Test conditions> (1) Load resistance test Load (surface pressure) 100 kgf / cm2Cumulative load every hour Speed 7m / min Stroke 80mm Counterpart material Gray cast iron (FC250) polished product Lubrication No lubrication (2) Endurance test Load (surface pressure) 90kgf / cm2 Speed 7m / min Stroke 80mm Counterpart material Gray cast iron (FC250) polished product Grease applied to sliding surface before lubrication test Durability 100,000 cycles
【0053】上記試験条件にて、各実施例から成る複層
焼結摺動部材の摩擦係数および摩耗量を測定した。その
試験結果を表1および表2に示す。なお、表1および表
2における比較例は前述した特公昭56−12288号
公報に開示された複層焼結摺動部材で、焼結層に黒鉛を
3質量%含有した鉛青銅を使用したものである。(以下
余白)Under the above test conditions, the coefficient of friction and the amount of wear of the multilayer sintered sliding member of each example were measured. The test results are shown in Tables 1 and 2. The comparative examples in Tables 1 and 2 are the multi-layer sintered sliding members disclosed in the above-mentioned Japanese Patent Publication No. 56-12288, in which lead bronze containing 3% by mass of graphite in the sintered layer was used. It is. (Below)
【0054】[0054]
【表1】 (以下余白)[Table 1] (Below)
【0055】[0055]
【表2】 [Table 2]
【0056】表1に示す試験結果から、各実施例から成
る複層焼結摺動部材は摩擦係数が0.15以下で、試験
時間を通して安定した摺動を示した。試験後の摺動面の
摩耗量も50μm以下と優れた性能を示した。また、表
2に示す試験結果から、各実施例から成る複層焼結摺動
部材は摩擦係数が0.10以下の低い値を示し、摩耗量
も5μm以下と低い値を示した。一方、比較例から成る
複層焼結摺動部材は、耐荷重試験においては荷重200
kgf/cm2経過と共に徐々に摩擦係数が高くなり、
摩耗量も急激に増大したため試験を中止した。また、耐
久試験においては、耐久回数5万サイクルを経過後、徐
々に摺動が不安定となり、摩擦係数、摩耗量とも急激な
上昇が認められた。表中の摩耗量は耐荷重試験において
は荷重200kgf/cm2時の測定結果、耐久試験に
おいては70000サイクル時の測定結果である。From the test results shown in Table 1, the multi-layer sintered sliding member of each of the examples had a coefficient of friction of 0.15 or less and showed stable sliding throughout the test time. The wear amount of the sliding surface after the test was also excellent at 50 μm or less. Further, from the test results shown in Table 2, the multilayer sintered sliding members of the respective examples exhibited low values of the friction coefficient of 0.10 or less and low wear amounts of 5 μm or less. On the other hand, the multilayer sintered sliding member of the comparative example had a load of 200
The coefficient of friction gradually increases with the passage of kgf / cm 2 ,
The test was stopped because the amount of wear also increased rapidly. Further, in the durability test, after 50,000 cycles of durability, the sliding became gradually unstable, and a sharp increase in both the friction coefficient and the wear amount was recognized. The wear amount in the table is a measurement result at a load of 200 kgf / cm 2 in the load resistance test, and a measurement result at 70,000 cycles in the durability test.
【0057】[0057]
【発明の効果】本発明の複層焼結摺動部材は、焼結合金
層を形成する成分中の水素化チタンが焼結時、アルミニ
ウム粉末のアルミナ皮膜を破壊するので、従来困難とさ
れていたアルミニウム青銅の焼結を可能とする。また、
水素化チタンのチタン成分は焼結マトリックスの結晶を
微細化して焼結マトリックスの強度および硬度を高める
ので、本発明の複層焼結摺動部材の衝撃荷重あるいは高
荷重用途への適用を可能とする。The multilayer sintered sliding member of the present invention has heretofore been considered difficult because titanium hydride in the components forming the sintered alloy layer destroys the alumina film of aluminum powder during sintering. Sintering of aluminum bronze. Also,
Since the titanium component of titanium hydride refines the crystal of the sintered matrix and increases the strength and hardness of the sintered matrix, the multilayer sintered sliding member of the present invention can be applied to impact load or high load applications. I do.
【図1】本発明の複層焼結摺動部材の製造に使用される
横型圧延機を示す説明図である。FIG. 1 is an explanatory view showing a horizontal rolling mill used for manufacturing a multilayer sintered sliding member of the present invention.
1 双ローラ 4 ホッパー 5 仕切り板 8 二層圧延シート DESCRIPTION OF SYMBOLS 1 Twin roller 4 Hopper 5 Divider 8 Double-layer rolled sheet
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI C22C 9/02 C22C 9/02 ──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. 7 Identification code FI C22C 9/02 C22C 9/02
Claims (12)
質量%、黒鉛3〜8質量%、水素化チタンのチタン成分
として0.1〜1.5質量%、残部銅から成る焼結合金
層が鋼板上に、錫5〜10質量%、燐0.1〜1.0質
量%、残部銅から成る燐青銅の接合層を介して一体に接
合されていることを特徴とする複層焼結摺動部材。1-5% by mass of aluminum, 3-6% of iron
5 to 10% by mass of tin, 5 to 10% by mass of tin, and 0.1 to 1.5% by mass of a titanium component of titanium hydride. A multilayer sintered sliding member, which is integrally joined via a phosphor bronze joining layer composed of 1 to 1.0% by mass and the balance being copper.
およびマンガン1質量%以下含有されている請求項1に
記載の複層焼結摺動部材。2. The multi-layer sintered sliding member according to claim 1, wherein the sintered alloy layer contains 3% by mass or less of nickel and 1% by mass or less of manganese.
量%の割合で含有されている請求項1又は2に記載の複
層焼結摺動部材。3. The multi-layer sintered sliding member according to claim 1, wherein the sintered alloy layer contains a lubricating oil in a ratio of 18 to 25% by volume.
と鉄粉末3〜6質量%と黒鉛粉末3〜8質量%と水素化
チタン粉末のチタン成分として0.1〜1.5質量%と
残部銅粉末から成る混合粉末を形成する工程と、(2)
この混合粉末に粉末結合剤の1〜15質量%水溶液を該
混合粉末に対し0.1〜5.0質量%添加し、均一に混
合してこれを摺動層用混合粉末とし、該混合粉末を圧延
ロールに供給して圧延シートを成形する工程と、(3)
鋼板を用意し、該鋼板上に錫5〜10質量%、燐0.1
〜1.0質量%、残部銅から成る燐青銅の接合層を形成
する工程と、(4)該圧延シートを鋼板上に該接合層を
介して重ね合わせ、これを中性または還元性雰囲気に調
整した加熱炉内で800〜950℃の温度で0.1〜
5.0kgf/cm2の圧力下で30〜60分間焼結
し、該圧延シートの焼結と鋼板上への接合を同時に行わ
せる工程と、以上(1)乃至(4)の工程から成ること
を特徴とする複層焼結摺動部材の製造方法。4. (1) 5 to 13% by mass of aluminum powder
Forming a mixed powder comprising 3 to 6% by mass of iron powder, 3 to 8% by mass of graphite powder, 0.1 to 1.5% by mass as a titanium component of titanium hydride powder and the balance of copper powder; )
To this mixed powder, an aqueous solution of a powder binder of 1 to 15% by mass is added in an amount of 0.1 to 5.0% by mass based on the mixed powder, and the mixture is uniformly mixed to obtain a mixed powder for a sliding layer. Supplying a roll to a rolling roll to form a rolled sheet; (3)
A steel sheet is prepared, and 5-10% by mass of tin and 0.1% of phosphorus are formed on the steel sheet.
Forming a bonding layer of phosphor bronze consisting of about 1.0% by mass with the balance being copper; and (4) superimposing the rolled sheet on a steel sheet via the bonding layer and bringing the sheet into a neutral or reducing atmosphere. 0.1 ~ at the temperature of 800 ~ 950 ℃ in the adjusted heating furnace
A step of sintering under a pressure of 5.0 kgf / cm 2 for 30 to 60 minutes to simultaneously perform sintering of the rolled sheet and joining on a steel sheet; and steps (1) to (4) above. A method for producing a multilayer sintered sliding member, characterized by the following.
質量%以下およびマンガン粉末1質量%以下含有されて
いる請求項4に記載の複層焼結摺動部材の製造方法。5. The mixed powder for a sliding layer includes nickel powder 3
The method for producing a multilayer sintered sliding member according to claim 4, wherein the content is not more than 1% by mass and not more than 1% by mass of manganese powder.
ロース、ポリビニルアルコール、カルボキシメチルセル
ロース、ヒドロキシエチルセルロース、メチルセルロー
ス、ゼラチン、アラビアゴム、スターチから選択される
請求項4又は5に記載の複層焼結摺動部材の製造方法。6. The multilayer sintered sliding member according to claim 4, wherein the powder binder is selected from hydroxypropyl cellulose, polyvinyl alcohol, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, gelatin, gum arabic, and starch. Manufacturing method.
〜1.0質量%、残部銅から成る混合粉末を鋼板の表面
に0.3〜0.7mmの厚さに一様に散布して形成する
請求項4から6のいずれか一項に記載の複層焼結摺動部
材の製造方法。7. The bonding layer is composed of 5 to 10% by mass of tin and 0.1% of phosphorus.
The powder according to any one of claims 4 to 6, wherein a mixed powder composed of -1.0 mass% and a balance of copper is uniformly spread on the surface of the steel sheet to a thickness of 0.3 to 0.7 mm. A method for producing a multilayer sintered sliding member.
〜1.0質量%、残部銅から成る混合粉末を鋼板の表面
に火焔溶射またはプラズマ溶射によって厚さ0.3〜
0.7mmの皮膜として形成する請求項4から6のいず
れか一項に記載の複層焼結摺動部材の製造方法。8. The bonding layer comprises 5 to 10% by mass of tin and 0.1% of phosphorus.
~ 1.0 mass%, mixed powder consisting of the balance copper is fired or flame sprayed on the surface of the steel sheet to a thickness of 0.3 ~
The method for producing a multilayer sintered sliding member according to any one of claims 4 to 6, which is formed as a coating having a thickness of 0.7 mm.
と鉄粉末3〜6質量%と黒鉛粉末3〜8質量%と水素化
チタン粉末のチタン成分として0.1〜1.5質量%と
残部銅粉末から成る混合粉末を形成する工程と、(2)
この混合粉末に粉末結合剤の1〜15質量%水溶液を該
混合粉末に対し0.1〜5.0質量%添加し均一に混合
して摺動層用混合粉末を形成する工程と、(3)錫5〜
10質量%、燐0.1〜1.0質量%、残部銅から成る
混合粉末に粉末結合剤の1〜15質量%水溶液を該混合
粉末に対し0.1〜5.0質量%添加し均一に混合して
接合層用混合粉末を形成する工程と、(4)該摺動層用
混合粉末と接合層用混合粉末とを圧延ロールに供給し、
摺動層用混合粉末層と接合層用混合粉末層とが一体とな
った二層の圧延シートを成形する工程と、(5)二層の
圧延シートの接合層用混合粉末層を下側にして鋼板表面
に重ね合わせ、これを中性または還元性雰囲気に調整し
た加熱炉内で800〜950℃の温度で0.1〜5.0
kgf/cm2の圧力下で30〜60分間焼結し、該圧
延シートの焼結と鋼板上への接合を同時に行わせる工程
と、以上(1)乃至(5)の工程からなることを特徴と
する複層焼結摺動部材の製造方法。9. (1) 5 to 13% by mass of aluminum powder
Forming a mixed powder comprising 3 to 6% by mass of iron powder, 3 to 8% by mass of graphite powder, 0.1 to 1.5% by mass as a titanium component of titanium hydride powder and the balance of copper powder; )
Adding a 1 to 15% by weight aqueous solution of a powder binder to the mixed powder to the mixed powder in an amount of 0.1 to 5.0% by weight and uniformly mixing to form a mixed powder for a sliding layer; ) Tin 5
An aqueous solution of a powder binder of 1 to 15% by mass is added to a mixed powder of 10% by mass, 0.1 to 1.0% by mass of phosphorus, and the balance of copper, and 0.1 to 5.0% by mass of the mixed powder is added. (4) supplying the mixed powder for the sliding layer and the mixed powder for the bonding layer to a rolling roll;
Forming a two-layer rolled sheet in which the mixed powder layer for the sliding layer and the mixed powder layer for the bonding layer are integrated; and (5) setting the mixed powder layer for the bonding layer of the two-layer rolled sheet downward. At a temperature of 800 to 950 ° C. in a heating furnace adjusted to a neutral or reducing atmosphere at a temperature of 800 to 950 ° C.
a step of sintering under a pressure of kgf / cm 2 for 30 to 60 minutes to simultaneously perform sintering of the rolled sheet and joining on a steel sheet; and steps (1) to (5) above. A method for producing a multilayer sintered sliding member.
3質量%以下およびマンガン粉末1質量%以下含有され
ている請求項9に記載の複層焼結摺動部材の製造方法。10. The method for producing a multilayer sintered sliding member according to claim 9, wherein the mixed powder for the sliding layer contains 3% by mass or less of nickel powder and 1% by mass or less of manganese powder.
ルロース、ポリビニルアルコール、カルボキシメチルセ
ルロース、ヒドロキシエチルセルロース、メチルセルロ
ース、ゼラチン、アラビアゴム、スターチから選択され
る請求項9又は10に記載の複層焼結摺動部材の製造方
法。11. The multilayer sintered sliding member according to claim 9, wherein the powder binder is selected from hydroxypropyl cellulose, polyvinyl alcohol, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, gelatin, gum arabic, and starch. Manufacturing method.
層の厚さは、0.3〜0.7mmである請求項9から1
1のいずれか一項に記載の複層焼結摺動部材の製造方
法。12. The mixed powder layer for a bonding layer of a two-layer rolled sheet has a thickness of 0.3 to 0.7 mm.
The method for producing a multilayer sintered sliding member according to any one of the preceding claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34791191A JP3325033B2 (en) | 1991-12-03 | 1991-12-03 | Multi-layer sintered sliding member and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34791191A JP3325033B2 (en) | 1991-12-03 | 1991-12-03 | Multi-layer sintered sliding member and manufacturing method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05156388A JPH05156388A (en) | 1993-06-22 |
JP3325033B2 true JP3325033B2 (en) | 2002-09-17 |
Family
ID=18393444
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JP34791191A Expired - Lifetime JP3325033B2 (en) | 1991-12-03 | 1991-12-03 | Multi-layer sintered sliding member and manufacturing method thereof |
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JP3859344B2 (en) | 1998-01-28 | 2006-12-20 | 株式会社小松製作所 | Sliding material, sliding member and method of manufacturing the sliding member |
NL1014116C2 (en) * | 2000-01-19 | 2001-07-20 | Corus Aluminium Walzprod Gmbh | Method and device for forming a laminate of compressed metal powder with a foaming agent between two metal layers, and product formed therewith. |
JP4424810B2 (en) | 2000-03-27 | 2010-03-03 | 株式会社小松製作所 | Sintered material |
JP4416313B2 (en) | 2000-12-15 | 2010-02-17 | 株式会社小松製作所 | Sliding material, composite sintered sliding member, and method for manufacturing the same |
KR100993158B1 (en) | 2001-09-26 | 2010-11-09 | 가부시키가이샤 고마쓰 세이사쿠쇼 | Connecting mechanism |
CN100455403C (en) * | 2007-02-15 | 2009-01-28 | 上海核威实业有限公司 | Technique for producing aluminum bronze-steel dual-metal bearing material |
JP5706193B2 (en) * | 2011-03-02 | 2015-04-22 | 株式会社タカコ | Manufacturing method of sliding member |
CN104259439B (en) * | 2014-09-16 | 2016-10-05 | 西安理工大学 | A kind of preparation method of aluminium bronze-rustless steel double-metal composite |
CN114921683B (en) * | 2022-05-29 | 2023-03-28 | 浙江倍泽新材料科技有限公司 | Self-pressurizing steel-copper bimetal for bell jar and energy-saving manufacturing method thereof |
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