JPH05311355A - Sintered alloy for sliding member excellent in scuffing resistance and wear resistance - Google Patents
Sintered alloy for sliding member excellent in scuffing resistance and wear resistanceInfo
- Publication number
- JPH05311355A JPH05311355A JP25195592A JP25195592A JPH05311355A JP H05311355 A JPH05311355 A JP H05311355A JP 25195592 A JP25195592 A JP 25195592A JP 25195592 A JP25195592 A JP 25195592A JP H05311355 A JPH05311355 A JP H05311355A
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- Prior art keywords
- sintered alloy
- resistance
- scuffing
- weight
- sliding member
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本願発明は、内燃機関の摺動部
材、特にカムフォロワ−部材、あるいはコンプレッサ−
部品のベ−ン等の高面圧下で摺動し、優れた耐スカッフ
ィング性と耐摩耗性を必要とする摺動部材の材料に適す
る鉄基焼結合金に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding member of an internal combustion engine, particularly a cam follower member, or a compressor.
The present invention relates to an iron-based sintered alloy suitable for a material of a sliding member that slides under a high surface pressure such as a vane of a component and that requires excellent scuffing resistance and wear resistance.
【０００２】現在、カムフォロワ−部材（タペット、ロ
ッカ−ア−ム）のチップの材料としては、通常、特公平
１−４０１０１号公報および特公昭６０−１６１０１号
公報に記載の材料が用いられている。これらのカムフォ
ロワ−部材の相手部材となるカムシャフトの材料がチル
鋳鉄の場合には、良好な状況で実用化されているが、そ
れでもなお、材料の耐スカッフィング性の点に限界があ
り、チップ材料に窒化等の表面処理を行っている場合が
ある。一方、相手カムシャフトが合金鋼製の場合には、
上記チップ材料では耐スカッフィング性が不十分となる
ため、合金鋼製カムシャフトに対しては適用されていな
いのが実状である。At present, as the material of the tip of the cam follower member (tappet, rocker arm), the materials described in JP-B-1-40101 and JP-B-60-16101 are usually used. .. When the material of the camshaft, which is the counterpart member of these cam follower members, is chill cast iron, it has been put to practical use in good conditions, but there is still a limit in the scuffing resistance of the material, and the chip material In some cases, surface treatment such as nitriding is performed. On the other hand, if the mating camshaft is made of alloy steel,
Since the chip material has insufficient scuffing resistance, it is not actually applied to alloy steel camshafts.
【０００３】このため、合金鋼製カムシャフトを相手部
材とするカムフォロワ−のチップ材料として、特に高面
圧用エンジンに用いるときは、例えば、特開昭６２−１
８２４０７号公報に記載されるような超硬合金を使用し
ているが、製造コストが高く，経済的な問題が残ってい
る。Therefore, when it is used as a tip material for a cam follower having a camshaft made of alloy steel as a counterpart member, particularly when it is used for an engine for high surface pressure, for example, Japanese Patent Laid-Open No. 62-1
Although a cemented carbide as described in Japanese Patent No. 82407 is used, the manufacturing cost is high and the economical problem remains.
【０００４】また、土砂摩耗や泥砂摩耗に曝される建設
機械や鉱山機械の構造部材の材料として適する鉄基焼結
合金が特開昭５９−１６９５２号公報によって知られて
いる。この公報には、該焼結合金が、Ｍｏ，Ｗ，Ｎｂ，
Ｔｉ，ＶおよびＺｒを合計で２０％以下含有し、これら
元素は一部基地に固溶し、一部は炭化物を形成して耐摩
耗性を向上させるが、２０％を超えると脆化が生じて使
用に耐えなくなる旨説明されている。しかし、該焼結合
金が高面圧下で摺動する内燃機関の摺動部材あるいはコ
ンプレッサ−の摺動部材に用いられるとの示唆は全くな
されていない。Further, Japanese Patent Laid-Open No. 59-16952 discloses an iron-based sintered alloy suitable as a material for structural members of construction machines and mining machines exposed to earth and sand wear and mud and sand wear. In this publication, the sintered alloy contains Mo, W, Nb,
It contains Ti, V and Zr in a total amount of 20% or less. Some of these elements form a solid solution in the matrix, and some form carbides to improve wear resistance, but if they exceed 20%, embrittlement occurs. It is explained that it becomes unusable. However, there is no suggestion that the sintered alloy is used as a sliding member of an internal combustion engine or a sliding member of a compressor that slides under high surface pressure.
【０００５】本願発明の材料は、従来の鉄基の材料の耐
スカッフィング性、耐摩耗性および靱性を向上させ、例
えば、それをカムフォロワー部材として用いた場合、い
かなる材料の相手カムシャフトにも適用可能としたもの
である。また現在合金鋼製カムシャフトを使用した高面
圧エンジンに採用されている特開昭６２−１８２４０７
号公報に記載のタペットについてはコストが高いことが
大きな問題であり、また低面圧エンジンに採用されてい
る鋳鉄製タペットについては、短寿命、低耐久性が問題
となっている。The material of the present invention improves the scuffing resistance, wear resistance and toughness of conventional iron-based materials, and when it is used as a cam follower member, it can be applied to a mating camshaft of any material. It was possible. In addition, JP-A-62-182407 is currently used in a high surface pressure engine using an alloy steel camshaft.
The tappet described in Japanese Patent Publication has a serious problem of high cost, and the cast iron tappet used in the low surface pressure engine has problems of short life and low durability.
【０００６】本願発明では、これらの問題をすべて解決
したものであって： （１）その焼結合金はＣ１．５〜４．０％，Ｃｒ５．０
〜１５．０％，Ｐ，ＢおよびＳｉからなる群から選ばれ
た１種または２種以上の元素０．１〜５．０％，Ｎｉ，
Ｃｕ，ＣｏおよびＭｎからなる群から選ばれた１種また
は２種以上の元素０．５〜１０．０％，Ｗ，Ｍｏ，Ｎ
ｂ，Ｔｉ，ＶおよびＴａからなる群から選ばれた１種ま
たは２種以上の元素２２．０〜４０．０％，残部Ｆｅお
よび不可避不純物からなる組成をもち、かつ９０％以上
の理論密度をもつものである。The present invention solves all of these problems by: (1) The sintered alloy contains C1.5-4.0% and Cr5.0.
˜15.0%, one or more elements selected from the group consisting of P, B and Si 0.1-5.0%, Ni,
0.5 to 10.0% of one or more elements selected from the group consisting of Cu, Co and Mn, W, Mo, N
b, Ti, V and Ta, one or more elements selected from the group consisting of 22.0 to 40.0%, the balance Fe and inevitable impurities, and a theoretical density of 90% or more. It has.
【０００７】（２）そして、前記（１）の焼結合金の摺
動面を超仕上げ、研磨加工法により表面粗さを０．３μ
ｍＲｚ以下とし、摺動時の摩擦係数を低下させた結果、
耐スカッフィング性がさらに向上したものである。 （３）また、前記（２）の焼結合金の摺動面にさらに水
蒸気処理を施し、摺動面に酸化膜を形成することによっ
て、初期の潤滑作用を高め、耐スカッフィング性を一層
向上させたものである。(2) Then, the sliding surface of the sintered alloy of (1) above is superfinished and the surface roughness is 0.3 μm by a polishing method.
As a result of reducing the friction coefficient during sliding by setting mRz or less,
The scuffing resistance is further improved. (3) Further, the sliding surface of the sintered alloy of the above (2) is further subjected to steam treatment to form an oxide film on the sliding surface to enhance the initial lubrication action and further improve the scuffing resistance. It is a thing.
【０００８】なお、本願発明で用いる水蒸気処理は、水
蒸気処理法は例えば、特公昭６１−２７３９号公報に記
載されるような周知のものであり、５００〜６００℃、
０．３〜０．８ｋｇ／ｃｍ2の過熱水蒸気で１〜３時間
処理し、水蒸気処理後は仕上加工は行わない。The steam treatment used in the present invention is a well-known steam treatment method as described in, for example, Japanese Patent Publication No. 61-2739, 500 to 600 ° C.
It is treated with superheated steam of 0.3 to 0.8 kg / cm 2 for 1 to 3 hours, and finish processing is not performed after steam treatment.
【０００９】[0009]
【課題を解決するための手段】従来の鉄基焼結合金部材
は、耐スカッフィング性を向上させるために、高硬度、
高融点で耐スカッフィング（焼付き）性に効果のあるＭ
Ｃ型、Ｍ6Ｃ型炭化物を生成させる元素（Ｗ，Ｍｏ，Ｎ
ｂ，Ｔｉ，Ｖ，Ｔａ等）を添加し、炭化物析出形態、析
出量をある範囲でコントロ−ルする。In order to improve the scuffing resistance, a conventional iron-based sintered alloy member has a high hardness,
M with high melting point and effective in scuffing resistance
Elements that form C-type and M 6 C-type carbides (W, Mo, N
b, Ti, V, Ta, etc.) is added to control the carbide precipitation morphology and the precipitation amount within a certain range.
【００１０】この方法により、板状で粗大化し易いＦｅ
−Ｃｒ複合炭化物の析出量を抑えることができるので、
得られる合金は、従来の鉄基焼結合金に比較し、耐スカ
ッフィング性はもとより、耐摩耗性は数段向上し、今ま
で採用されていなかった合金鋼製カムシャフトに対して
も組合せ可能となるものである。By this method, Fe which is plate-like and easily coarsens
Since the amount of precipitation of -Cr compound carbide can be suppressed,
Compared with conventional iron-based sintered alloys, the obtained alloy has several stages of wear resistance as well as scuffing resistance, and it can be combined with alloy steel camshafts that have not been used until now. It will be.
【００１１】また、カム当り面を０．３μｍＲｚ以下に
超仕上げ研磨することによって耐スカッフィング性が向
上し、また、その上に水蒸気処理を施して酸化膜を形成
させることにより、耐スカッフィング性がさらに向上す
る。Further, the scuffing resistance is improved by superfinishing the cam contact surface to 0.3 μmRz or less, and the scuffing resistance is further improved by applying steam treatment thereon to form an oxide film. improves.
【００１２】本願発明の焼結合金の製造においては、摺
動部材のチップ部分を成形し、これを合金鋼母材の所定
部分に添着し、母材となる成形品（タペット、ロッカ−
ア−ム）と一緒に焼結（焼着、拡散接合）するかまたは
チップのみを別個に焼結した後、タペット、ロッカ−ア
−ムと溶融アルミによって鋳包むかあるいはチップとタ
ペット、ロッカ−ア−ムとをろう付けすることによって
最終製品を得るものである。In the production of the sintered alloy of the present invention, the tip portion of the sliding member is formed and attached to a predetermined portion of the alloy steel base material to form a base material (tapet, rocker).
Sintering (baking, diffusion bonding) together with the arm) or separately sintering only the tip, and then casting with a tappet, rocker arm and molten aluminum, or a tip, tappet, rocker. The final product is obtained by brazing an arm.
【００１３】[0013]
【作用】下記に本願発明材の焼結合金の組成について各
合金成分を数値制限した理由を述べる。The reason why the respective alloy components are numerically limited with respect to the composition of the sintered alloy of the present invention material will be described below.
【００１４】（ａ）Ｃ１．５〜４．０重量％ Ｃ含有量が１．５重量％未満では、炭化物生成量が少な
く、耐スカッフィング性、耐摩耗性を確保できず、逆に
Ｃ含有量が４．０重量％を超えると炭化物析出量が多く
なり、これが粗大化して相手カム材への攻撃性が増大
し、また、合金の脆化が進む。(A) C1.5 to 4.0% by weight If the C content is less than 1.5% by weight, the amount of carbide produced is small, and the scuffing resistance and abrasion resistance cannot be ensured. When it exceeds 4.0% by weight, the amount of precipitated carbide increases, which coarsens and increases the aggressiveness to the mating cam material, and the alloy becomes brittle.
【００１５】（ｂ）Ｃｒ５．０〜１５．０重量％ 成分は基地に固溶し、これを強化し、かつＣと結合し
て、Ｆｅ，Ｃｒ複合炭化物を形成する。これによって合
金の耐スカッフィング性、耐摩耗性を向上させる作用が
ある。(B) 5.0 to 15.0% by weight of Cr The component forms a solid solution in the matrix, strengthens it, and bonds with C to form a Fe, Cr composite carbide. This has the effect of improving the scuffing resistance and wear resistance of the alloy.
【００１６】Ｃｒ含有量が５．０重量％未満では全体炭
化物量が減少し、耐スカッフィング、耐摩耗性を満足で
きず、逆に１５．０重量％を超えると、Ｆｅ−Ｃｒ複合
炭化物が粗大化し、かつ基地Ｃ濃度が減少するために焼
き入れ性が劣るようになる。When the Cr content is less than 5.0% by weight, the total amount of carbides decreases, and the scuffing resistance and wear resistance cannot be satisfied. On the contrary, when it exceeds 15.0% by weight, the Fe-Cr composite carbide is coarse. And hardenability deteriorates because the base C concentration decreases.
【００１７】（ｃ）Ｐ，Ｂ，Ｓｉの１種または２種以上
０．１〜５．０重量％ 基地に固溶して合金の融点を下げるので、液相焼結が容
易となる。また得られた焼結体の緻密化および炭化物生
成の安定化をはかる均等的作用がある。０．１重量％未
満では、前記作用の効果が得られず、５．０重量％を超
えると合金の脆化が著しくなる。(C) One or two or more of P, B and Si 0.1 to 5.0 wt% Solid solution in the matrix to lower the melting point of the alloy, which facilitates liquid phase sintering. In addition, there is an equal effect of densifying the obtained sintered body and stabilizing the formation of carbide. If it is less than 0.1% by weight, the effect of the above action cannot be obtained, and if it exceeds 5.0% by weight, embrittlement of the alloy becomes remarkable.
【００１８】（ｄ）Ｎｉ，Ｃｕ，Ｃｏ，Ｍｎの１種また
は２種以上０．５〜１０．０重量％ これらの成分は、基地を強化し、かつ基地の焼き入れ性
（マルテンサイト化、ベイナイト化）を助ける。必要に
応じて含有量を決定するが、その含有量が０．５重量％
未満では前記作用の効果が得られず１０重量％を超える
とより一層の向上効果は見られず、経済的に不利であ
る。(D) One or more of Ni, Cu, Co and Mn 0.5 to 10.0% by weight These components strengthen the matrix and harden the matrix (martensite, Help bainite). The content is determined as necessary, but the content is 0.5% by weight.
If it is less than 10% by weight, the above-mentioned effects cannot be obtained, and if it exceeds 10% by weight, no further improvement effect can be seen, which is economically disadvantageous.
【００１９】（ｅ）Ｗ，Ｍｏ，Ｎｂ，Ｔｉ，Ｖ，Ｔａの
１種または２種以上２２．０〜４０．０重量％ これらの成分は、Ｃｒとは異なってＭ6Ｃ型，ＭＣ型の
炭化物を形成し、Ｆｅ−Ｃｒ複合炭化物よりも高硬度で
高融点であり、かつ微細形状析出であるため、耐スカッ
フィング性、耐摩耗性をより一層向上させる効果があ
る。また、Ｆｅ−Ｃｒ複合炭化物の粗大化成長を抑える
働きがある。２２重量％未満であると、Ｍ6Ｃ型，ＭＣ
型の炭化物の析出量が足らないため、耐スカッフィング
性が劣り、４０重量％を超えると、合金の脆化が著し
く、かつ経済的に不利である。(E) One or more of W, Mo, Nb, Ti, V, Ta 22.0 to 40.0% by weight These components are different from Cr in M 6 C type and MC type. Which has a higher hardness and a higher melting point than that of the Fe-Cr composite carbide and is a fine shape precipitate, it has the effect of further improving the scuffing resistance and wear resistance. It also has a function of suppressing coarsening growth of the Fe-Cr composite carbide. If it is less than 22% by weight, M 6 C type, MC
Since the amount of the precipitated type carbide is insufficient, the scuffing resistance is inferior, and when it exceeds 40% by weight, the alloy is significantly embrittled and is economically disadvantageous.
【００２０】なお本発明の鉄基焼結合金は、９０％以上
の理論密度比をもつことが望ましく、これは９０％未満
の理論密度比では基地強さが低下し大きな空孔のもつ切
欠効果によってピッチング摩耗が発生し易くなるためで
ある。The iron-based sintered alloy of the present invention preferably has a theoretical density ratio of 90% or more. This is because the theoretical density ratio of less than 90% lowers the matrix strength and causes the notch effect of large pores. This is because pitting wear is likely to occur.
【００２１】なお、相手カムシャフトは上述の合金材だ
けでなく、チル鋳鉄、焼入鋳鉄、焼入鋼、焼結合金材の
いずれであってもよく、これらと組み合わせて使用可能
である。The mating camshaft may be any one of chill cast iron, hardened cast iron, hardened steel, and sintered alloy material in addition to the above-mentioned alloy materials, and can be used in combination with these.
【００２２】[0022]
【実施例】本願発明の焼結合金中の成分元素のうちＣ，
Ｎｉ，ＣｕおよびＣｏを除く他の元素について、所定の
含有量をもった合金鋼のアトマイズ粉を用意し、これに
所定量のＣ粉，Ｎｉ粉，Ｃｕ粉，Ｃｏ粉を添加し、所望
の配合粉末を得た。表１のような組成に配合した粉末に
さらに潤滑剤としてステアリン酸亜鉛１．０％を加えて
混合し得られた混合粉末を５ton/cm2の圧力で成形し、
圧粉体を得た。EXAMPLES Among the constituent elements in the sintered alloy of the present invention, C,
With respect to other elements except Ni, Cu and Co, atomized powder of alloy steel having a predetermined content is prepared, and a predetermined amount of C powder, Ni powder, Cu powder, Co powder is added to the atomized powder to obtain a desired amount. A blended powder was obtained. 1.0% zinc stearate as a lubricant was further added to the powder compounded in the composition as shown in Table 1 and mixed to obtain a mixed powder, which was molded at a pressure of 5 ton / cm 2 .
A green compact was obtained.
【００２３】[0023]
【表１】 [Table 1]
【００２４】この圧粉体を、タペット形状の母材（材
質：SCM415)の上に乗せ、真空炉内で、１１００〜１２
００℃の温度に４５分間保持して、焼結を完了した。そ
の後、焼結母材に浸炭焼入れを行って母材表面を硬化さ
せ、ついで指定された寸法に加工、研磨して仕上げを行
った。This green compact is placed on a tappet-shaped base material (material: SCM415) and placed in a vacuum furnace at 1100-12.
The temperature was kept at 00 ° C for 45 minutes to complete the sintering. Then, the sintered base material was subjected to carburizing and quenching to harden the surface of the base material, and then processed and polished to a specified size to finish.
【００２５】これらの本願発明のタペットを下記の表２
の条件にてリグ試験を行い、耐スカッフィング性、耐摩
耗性を評価した。なお、カム表面粗さは，一般仕上げの
１．０μｍＲｚとし、タペット材のカム当り面の粗さは
特性を左右する重要な因子であるため、すべて０．２μ
ｍＲｚに統一した。一方、タペット表面粗さの違い及び
水蒸気処理の効果を確認するために、一般仕上げの０．
８μｍＲｚ程度にしたもの、超仕上げの０．２μｍＲｚ
の粗さにしたもの、および超仕上げの０．２μｍＲｚの
粗さにした後水蒸気処理を施したタペットを製作した。
リグ試験には、ディ−ゼル直列６気筒用カム・タペット
試験機を用いた。These tappets of the present invention are shown in Table 2 below.
A rig test was carried out under the conditions described above to evaluate the scuffing resistance and wear resistance. The cam surface roughness is 1.0 μmRz, which is a general finish, and the roughness of the cam contact surface of the tappet material is an important factor that affects the characteristics.
Unified to mRz. On the other hand, in order to confirm the difference in the surface roughness of the tappet and the effect of the steam treatment, the general finish of 0.
About 8 μm Rz, 0.2 μm Rz of super finish
And a tappet that had been subjected to steam treatment after being roughened to a superfinish of 0.2 μm Rz.
For the rig test, a Diesel in-line 6-cylinder cam tappet tester was used.
【００２６】[0026]
【表２】 [Table 2]
【００２７】試験結果を図１ないし図３に示す。図１に
おいて棒グラフは、上記の表２の耐スカッフィング試験
方法にしたがって行った場合のスカッフィング発生荷重
を示す。図１から明らかなように、本願発明の焼結合金
Ｄ〜Ｋは、従来の焼結合金Ａ〜Ｃに比較して、耐スカッ
フィング性が格段に優れていることが理解できる。The test results are shown in FIGS. In FIG. 1, the bar graph shows the scuffing generation load when the scuffing resistance test method of Table 2 is performed. As is clear from FIG. 1, it can be understood that the sintered alloys D to K of the present invention have markedly better scuffing resistance than the conventional sintered alloys A to C.
【００２８】図３は、本発明材Ｄにおいて表面粗さおよ
び表面性状を変えた試験片を用いて図１におけると同様
に耐スカッフィング試験方法を実施し、その時のスカッ
フィング発生荷重を測定したものである。FIG. 3 shows the scuffing resistance test method carried out in the same manner as in FIG. 1 using the test pieces of the present invention material D having different surface roughness and surface properties, and the scuffing generation load at that time was measured. is there.
【００２９】図３から明らかなように、本発明材Ｄにお
いて、一般仕上げ０．８μｍＲｚを施した試験片は、超
仕上げ０．２μｍＲｚを施した試験片よりも耐スカッフ
ィング性が劣っており、耐スカッフィング性の改善に対
して超仕上げ研磨の効果が顕著である。また、超仕上げ
０．２μｍＲｚを施した後水蒸気処理を施した試験片は
より一層耐スカッフィング性が向上していることが認め
られた。As is apparent from FIG. 3, in the material D of the present invention, the test piece subjected to the general finish of 0.8 μmRz was inferior in scuffing resistance to the test piece subjected to the superfinish of 0.2 μmRz, and The effect of super-finish polishing is remarkable for improving the scuffing property. Further, it was confirmed that the scuffing resistance was further improved in the test piece subjected to the steam treatment after the superfinishing of 0.2 μmRz.
【００３０】また、図２において右側の棒グラフは、焼
結合金で製造したタペットを表２の摩耗試験方法に従っ
て行った試験結果であって、本願発明の焼結合金Ｄ〜Ｋ
で製造したタペットの耐摩耗性が従来の焼結合金Ａ〜Ｃ
で製造したタペットに比較して非常に優れていることが
分かる。The bar graph on the right side of FIG. 2 shows the test results of the tappets made of sintered alloys according to the abrasion test method of Table 2, and the sintered alloys D to K of the present invention.
The wear resistance of the tappet manufactured in
It can be seen that it is extremely superior to the tappet manufactured in.
【００３１】さらに、図２の左側の棒グラフは、S48C鋼
製のカムシャフトの表面を高周波焼き入れしたものを相
手部材をして、上記タペットＡ〜Ｋを組み合わせて、使
用したときに生ずるカムシャフトの摩耗量を測定した結
果であって、該カムシャフトの相手となるタペットの焼
結合金が本願のＤ〜Ｋの場合は、カムシャフトの摩耗が
極めて少なく、一方、カムシャフトを従来の焼結合金Ａ
〜Ｃで作ったタペットを組み合わせて使用したときに
は、カムシャフトが大きく摩耗することが理解できる。Further, the bar graph on the left side of FIG. 2 shows a camshaft produced when the surface of a S48C steel camshaft is induction-hardened as a mating member and the above tappets A to K are combined and used. When the sintered alloy of the tappet, which is the counterpart of the camshaft, is D to K of the present application, the wear of the camshaft is extremely small, while the camshaft is not subjected to conventional burn-bonding. Money A
It can be understood that the camshaft is greatly worn when the tappets made from C to C are used in combination.
【００３２】[0032]
【発明の効果】以上説明のとおり、本願発明の焼結合金
は、高面圧下で摺動する部材として使用した場合に、非
常に優れた耐スカッフィング性と耐摩耗性を示し、その
ため内燃機関の摺動部材やコンプレッサ−部品等の材料
として特に適するものである。As described above, the sintered alloy of the present invention exhibits extremely excellent scuffing resistance and wear resistance when used as a member that slides under a high surface pressure, and therefore the internal combustion engine It is particularly suitable as a material for sliding members and compressor parts.
【図１】本願発明の焼結合金および従来の各焼結合金に
よってタペットを製造し、これを、S48C鋼に表面焼き入
れをしたカムシャフトに組み合わせたリグ試験におい
て、各焼結合金の耐スカッフィング性を示す棒グラフで
ある。FIG. 1 is a rig test in which tappets are manufactured from the sintered alloys of the present invention and conventional sintered alloys, and are combined with a camshaft whose surface is hardened to S48C steel. In a rig test, scuffing resistance of each sintered alloy is obtained. It is a bar graph showing sex.
【図２】本願発明において、それぞれの組合せの各焼結
合金製タペットとカムシャフトとの摩耗量を示す棒グラ
フである。FIG. 2 is a bar graph showing the amount of wear of each sintered alloy tappet and camshaft of each combination in the present invention.
【図３】本発明材Ｄにおいて表面粗さおよび表面性状を
変えたタペット試験片を用いて図１におけると同様にリ
グ試験を実施し、その時のスカッフィング発生荷重を測
定した棒グラフである。FIG. 3 is a bar graph in which a rig test was carried out in the same manner as in FIG. 1 using tappet test pieces with different surface roughness and surface properties in the present invention material D, and the scuffing generation load at that time was measured.
Claims (3)
１５．０重量％，Ｐ，ＢおよびＳｉからなる群から選ば
れた１種または２種以上の元素０．１〜５．０重量％，
Ｎｉ，Ｃｕ，ＣｏおよびＭｎからなる群から選ばれた１
種または２種以上の元素０．５〜１０．０重量％，Ｗ，
Ｍｏ，Ｎｂ，Ｔｉ，ＶおよびＴａからなる群から選ばれ
た１種または２種以上の元素２２．０〜４０．０％，残
部Ｆｅおよび不可避不純物からなる組成をもち、かつ９
０％以上の理論密度をもつ、耐スカッフィング性と耐摩
耗性に優れた摺動部材用焼結合金。1. C1.5-4.0% by weight, Cr5.0-
15.0% by weight, one or more elements selected from the group consisting of P, B and Si 0.1 to 5.0% by weight,
1 selected from the group consisting of Ni, Cu, Co and Mn
One or more elements 0.5 to 10.0% by weight, W,
The composition has one or more elements selected from the group consisting of Mo, Nb, Ti, V and Ta, 22.0 to 40.0%, the balance being Fe and unavoidable impurities, and 9
Sintered alloy for sliding members with a theoretical density of 0% or more and excellent in scuffing resistance and wear resistance.
粗さが０．３μｍＲｚ以下であることを特徴とする請求
項１記載の摺動部材用焼結合金。2. The sintered alloy for a sliding member according to claim 1, wherein the surface roughness of the sliding surface of the sintered alloy for a sliding member is 0.3 μmRz or less.
気処理による酸化膜が形成されていることを特徴とする
請求項２記載の摺動部材用焼結合金。3. The sintered alloy for a sliding member according to claim 2, wherein an oxide film formed by steam treatment is formed on the sliding surface of the sintered alloy for the sliding member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25195592A JP3187975B2 (en) | 1991-08-31 | 1992-08-28 | Sintered alloy for sliding members with excellent scuffing and wear resistance |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24435991 | 1991-08-31 | ||
| JP3-244359 | 1991-08-31 | ||
| JP25195592A JP3187975B2 (en) | 1991-08-31 | 1992-08-28 | Sintered alloy for sliding members with excellent scuffing and wear resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05311355A true JPH05311355A (en) | 1993-11-22 |
| JP3187975B2 JP3187975B2 (en) | 2001-07-16 |
Family
ID=26536705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25195592A Expired - Fee Related JP3187975B2 (en) | 1991-08-31 | 1992-08-28 | Sintered alloy for sliding members with excellent scuffing and wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3187975B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406083A (en) * | 2018-11-08 | 2019-03-01 | 国网新疆电力有限公司电力科学研究院 | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform |
-
1992
- 1992-08-28 JP JP25195592A patent/JP3187975B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406083A (en) * | 2018-11-08 | 2019-03-01 | 国网新疆电力有限公司电力科学研究院 | A kind of overhanging golden tool string wind excited vibration Wearing Simulated Test platform |
| CN109406083B (en) * | 2018-11-08 | 2023-12-05 | 国网新疆电力有限公司电力科学研究院 | Suspension string hardware wind excitation vibration abrasion simulation test platform |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3187975B2 (en) | 2001-07-16 |
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