JPH06221438A - Flame sprayed piston ring - Google Patents
Flame sprayed piston ringInfo
- Publication number
- JPH06221438A JPH06221438A JP2715893A JP2715893A JPH06221438A JP H06221438 A JPH06221438 A JP H06221438A JP 2715893 A JP2715893 A JP 2715893A JP 2715893 A JP2715893 A JP 2715893A JP H06221438 A JPH06221438 A JP H06221438A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- piston ring
- film
- flame sprayed
- chrome
- 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.)
- Pending
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は内燃機関や圧縮機等に用
いられるピストンリングに関し、更に詳しくは、少なく
とも外周摺動面に溶射皮膜を形成した溶射ピストンリン
グに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piston ring used in an internal combustion engine, a compressor or the like, and more particularly to a thermal spray piston ring having a thermal spray coating formed on at least an outer peripheral sliding surface.
【０００２】[0002]
【従来の技術】近年、エンジンの小型軽量化、高出力化
などの高性能化に伴い、ピストンリングに要求される条
件はますます苛酷なものとなり、より高度な耐摩耗性、
耐焼付性、初期なじみ性などが要求されている。2. Description of the Related Art In recent years, as engine performance has become smaller and lighter and higher output has been achieved, the conditions required for piston rings have become more severe, and higher wear resistance,
Seizure resistance, initial familiarity, etc. are required.
【０００３】従来から内燃機関用のピストンリングの表
面処理に多く使用されていた硬質クロムめっきは、高鉛
燃料を使用する場合や腐食雰囲気下で使用する場合に耐
摩耗性に難点があり、その代替として溶射処理が施され
るようになった。しかしながら、溶射皮膜は耐摩耗性に
優れているものの、運転中に溶射皮膜の剥離や脱落を生
じるという問題があった。Hard chromium plating, which has been often used for the surface treatment of piston rings for internal combustion engines, has a problem in wear resistance when using high lead fuel or in a corrosive atmosphere. As an alternative, thermal spraying has come to be applied. However, although the thermal spray coating has excellent wear resistance, there is a problem in that the thermal spray coating may peel or fall off during operation.
【０００４】そこで、鋳鉄材や鋼材からなるピストンリ
ング母材との結合性が高い Cr3C2を含有するプラズマ溶
射皮膜を形成したピストンリングと、フェライトが多く
析出している軟質な鋳鉄材からなるシリンダライナとの
組み合わせが提案された。この場合、皮膜の耐剥離性は
向上するが、 Cr3C2粒子は硬度が高く、鋭利な形状とな
っているため、シリンダライナに対する攻撃性が高くな
るという問題があった。Therefore, from a piston ring having a plasma sprayed coating containing Cr 3 C 2 which has a high bondability with a piston ring base material made of cast iron or steel, and a soft cast iron material in which a large amount of ferrite is precipitated. A combination with a cylinder liner has been proposed. In this case, although the peeling resistance of the coating is improved, the Cr 3 C 2 particles have a high hardness and a sharp shape, and thus there is a problem that the attacking property against the cylinder liner becomes high.
【０００５】[0005]
【発明が解決しようとする課題】従って、本発明の目的
は、従来のプラズマ溶射による皮膜の欠点を解消し、耐
摩耗性に優れ、相手材への攻撃性が少ない溶射皮膜を形
成した溶射ピストンリングを提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the drawbacks of conventional coatings by plasma spraying, to form a sprayed coating having excellent wear resistance and less aggression to the mating material. Is to provide a ring.
【０００６】[0006]
【課題を解決するための手段】上記課題に鑑み鋭意研究
の結果、本発明者は、微細クロムカーバイド粉末、モリ
ブデン粉末、ニッケル−クロム合金粉末を所定の割合で
混合し、ピストンリングの摺動面に溶射することによっ
て、耐摩耗性に優れ、相手材に対する攻撃性の低い溶射
ピストンリングが得られることを発見し、本発明を完成
させた。As a result of earnest research in view of the above problems, the present inventor has found that fine chromium carbide powder, molybdenum powder, and nickel-chromium alloy powder are mixed at a predetermined ratio, and the sliding surface of the piston ring is mixed. The present invention was completed by discovering that a thermal sprayed piston ring having excellent wear resistance and low aggression against a mating material can be obtained.
【０００７】すなわち本発明の溶射ピストンリングは、
微細クロムカーバイド３〜２５重量％、モリブデンが３
０〜８０重量％、ニッケル−クロム合金が１０〜４０重
量％、からなるプラズマ溶射皮膜を少なくとも外周摺動
面に有することを特徴とする。That is, the thermal spray piston ring of the present invention is
Fine chrome carbide 3-25% by weight, molybdenum 3
It is characterized by having a plasma spray coating of 0 to 80% by weight and a nickel-chromium alloy of 10 to 40% by weight on at least the outer peripheral sliding surface.
【０００８】[0008]
【作用】溶射皮膜は微細クロムカーバイドと、モリブデ
ンと、ニッケル−クロム合金とからなる。溶射皮膜中に
含まれる微細クロムカーバイドは、皮膜の硬度や靱性を
高め、耐摩耗性を向上させる。また、クロムカーバイド
の粒子は微細であるため、相手材への攻撃性が低い。溶
射皮膜全体を１００重量％として、クロムカーバイドの
含有量が３重量％未満では上記の効果が顕著に得られ
ず、また２５重量％を超えてもその効果に著しい変化は
ない。従って、クロムカーバイドの含有量は３〜２５重
量％とする。好ましいクロムカーバイドの含有量は５〜
１５重量％である。The thermal spray coating is composed of fine chromium carbide, molybdenum, and nickel-chromium alloy. The fine chromium carbide contained in the thermal spray coating enhances the hardness and toughness of the coating and improves the wear resistance. Further, since the particles of chrome carbide are fine, the attacking property on the mating material is low. When the total content of the thermal spray coating is 100% by weight, the above effect cannot be obtained remarkably when the content of chromium carbide is less than 3% by weight, and there is no significant change in the effect when it exceeds 25% by weight. Therefore, the content of chromium carbide is set to 3 to 25% by weight. The preferred chromium carbide content is 5
It is 15% by weight.
【０００９】溶射皮膜中に含まれるモリブデンは、皮膜
の耐摩耗性及び耐焼付性を高めるとともに、高温時の硬
度や耐食性を高めるのに有効に作用する。溶射皮膜全体
を１００重量％として、モリブデンの含有量が３０重量
％未満では上記の効果が顕著に得られず、また８０重量
％を超えてもその効果に著しい変化はない。従って、モ
リブデンの含有量は３０〜８０重量％とする。好ましい
モリブデンの含有量は５０〜７０重量％である。Molybdenum contained in the thermal spray coating effectively acts to enhance the wear resistance and seizure resistance of the coating, as well as the hardness and corrosion resistance at high temperatures. When the total amount of the thermal spray coating is 100% by weight, the above effect cannot be obtained remarkably when the content of molybdenum is less than 30% by weight, and the effect is not significantly changed even when it exceeds 80% by weight. Therefore, the content of molybdenum is set to 30 to 80% by weight. The preferable content of molybdenum is 50 to 70% by weight.
【００１０】一方、溶射皮膜中に含まれるニッケル−ク
ロム合金は、皮膜の耐酸化性及び耐食性の向上に寄与
し、また鋳鉄材や鋼材等からなるピストンリング母材と
の結合性が良好なため、皮膜の密着性を向上させる。ニ
ッケル−クロム合金の含有量は、溶射皮膜全体を１００
重量％として、１０〜４０重量％とする。ニッケル−ク
ロム合金の含有量が１０重量％未満では上記の効果が顕
著に得られず、また４０重量％を超えてもその効果に著
しい変化はない。ニッケル−クロム合金の好ましい含有
量は２０〜３５重量％である。なお、ニッケル−クロム
合金中におけるニッケルとクロムの含有比率は７０：３
０〜９０：１０とするのが好ましい。On the other hand, the nickel-chromium alloy contained in the thermal spray coating contributes to the improvement of the oxidation resistance and corrosion resistance of the coating, and also has good bondability with the piston ring base material made of cast iron material or steel material. , Improve the adhesion of the film. The content of nickel-chromium alloy is 100 for the entire thermal spray coating.
The weight% is 10 to 40% by weight. If the content of the nickel-chromium alloy is less than 10% by weight, the above effect cannot be remarkably obtained, and if it exceeds 40% by weight, the effect is not significantly changed. The preferable content of the nickel-chromium alloy is 20 to 35% by weight. The content ratio of nickel and chromium in the nickel-chromium alloy is 70: 3.
It is preferably from 0 to 90:10.
【００１１】溶射皮膜は通常のプラズマ溶射や大気プラ
ズマ溶射によっても形成することができるが、いわゆる
減圧プラズマ溶射によって形成するのが好ましい。減圧
プラズマ溶射は図５に示すプラズマガン５を用いて行
う。プラズマガン５は、銅などからなる環状の陽極６
と、タングステンなどからなり陽極６の上部に位置する
陰極７と、電源８とを有する。陽極６はプラズマガスを
噴出するノズルを形成する。陽極６及び陰極７の内部に
はキャビティ（図示せず）が形成され、冷却機能を有す
る。The thermal spray coating can be formed by ordinary plasma spraying or atmospheric plasma spraying, but it is preferably formed by so-called reduced pressure plasma spraying. The low pressure plasma spraying is performed using the plasma gun 5 shown in FIG. The plasma gun 5 is an annular anode 6 made of copper or the like.
And a cathode 7 made of tungsten or the like and located above the anode 6, and a power supply 8. The anode 6 forms a nozzle that ejects plasma gas. A cavity (not shown) is formed inside the anode 6 and the cathode 7 and has a cooling function.
【００１２】減圧プラズマ溶射を行うには、まず陽極６
の先端から２０〜２００mm離れた位置にピストンリング
母材２を設置し、チャンバ内の空気をポンプ等で吸引し
て、１０-10 〜１０-20 Torr程度の真空にするととも
に、酸素等の有害ガスを除去する。次にAr等の不活性ガ
スをチャンバ内に導入して、約２０〜１５０Torrの低圧
に調整する。この状態で陽極６と陰極７との間に高電圧
を印加すると、アーク放電９により不活性ガスが加熱さ
れ、プラズマ化される。プラズマ化されたガスは膨張
し、高温かつ高速で陽極６から噴出し、プラズマジェッ
ト流１０をつくる。To carry out low pressure plasma spraying, firstly the anode 6 is used.
Install the piston ring base material 2 at a position 20 to 200 mm away from the tip of the chamber, suck the air in the chamber with a pump, etc. to create a vacuum of about 10 -10 to 10 -20 Torr, and avoid harmful effects such as oxygen. Remove gas. Next, an inert gas such as Ar is introduced into the chamber and adjusted to a low pressure of about 20 to 150 Torr. When a high voltage is applied between the anode 6 and the cathode 7 in this state, the arc discharge 9 heats the inert gas and turns it into plasma. The gas turned into plasma expands and is ejected from the anode 6 at high temperature and high speed to form a plasma jet stream 10.
【００１３】このプラズマジェット流１０中に、皮膜が
所望の組成となるように配合した原料粉末１１を投入す
る。粉末１１の供給口は、図５のようにノズル６内に設
けてもよいし、あるいはノズル６の直下に設けてもよ
い。粉末１１はプラズマジェット流１０中で溶融、加速
されて母材２に衝突する。衝突した粉末１１は瞬時に偏
平化して、母材温度まで急冷し、皮膜３を形成する。Into the plasma jet stream 10 is introduced a raw material powder 11 which is mixed so that the coating has a desired composition. The supply port for the powder 11 may be provided inside the nozzle 6 as shown in FIG. 5, or may be provided directly below the nozzle 6. The powder 11 is melted and accelerated in the plasma jet stream 10 and collides with the base material 2. The colliding powder 11 is instantly flattened and rapidly cooled to the base material temperature to form the film 3.
【００１４】上記のように減圧下においてプラズマ溶射
を行ったのは、プラズマジェット中のガス速度を高速に
するためである。粉末粒子は大気プラズマ溶射の場合よ
りも高速に加速されて母材に衝突し、溶射皮膜３は空孔
の体積比率が５％以下の緻密な組織となる。そのため、
皮膜３は耐酸化性、耐食性及び膜付着性が向上するとと
もに、相手材に対する攻撃性が低くなる。また、減圧下
においてプラズマ溶射を行うことにより、溶融から凝固
に至る過程において雰囲気による粉末粒子の酸化がなく
なる。そのため、皮膜３中には酸化物が混在せず、皮膜
粒子間の結合力が強くなり、皮膜３の機械的強度及び耐
摩耗性が向上する。The reason why plasma spraying is performed under reduced pressure as described above is to increase the gas velocity in the plasma jet. The powder particles are accelerated at a higher speed than in the case of atmospheric plasma spraying and collide with the base material, and the sprayed coating 3 has a dense structure in which the volume ratio of pores is 5% or less. for that reason,
The coating 3 has improved oxidation resistance, corrosion resistance, and film adhesion, and at the same time, has a lower attacking property against the mating material. Further, by performing plasma spraying under reduced pressure, oxidation of powder particles due to the atmosphere is eliminated in the process from melting to solidification. Therefore, the oxide is not mixed in the coating 3, and the bonding force between the coating particles becomes strong, and the mechanical strength and wear resistance of the coating 3 are improved.
【００１５】なお、母材２の表面には予めショットブラ
スト等で１０〜２０μm 程度の大きさの凹凸を形成して
おくのが好ましい。それによって、溶融粒子が母材の凸
部に衝突した際に、凸部が局部溶融を起こして合金化し
やすく、また機械的にも溶融粒子の凝固収縮応力による
アンカー効果が生じて、皮膜の接着力が強固となる。ま
た、溶射直前に母材２を予熱して４００〜５５０℃の高
温にし、移行アークにより母材２の表面をクリーニング
すると、表面が活性化し、溶射後に母材２と皮膜３との
間に相互拡散層が形成され、母材２と皮膜３とは強固に
接合する。Incidentally, it is preferable that the surface of the base material 2 is previously formed with irregularities having a size of about 10 to 20 μm by shot blasting or the like. As a result, when the molten particles collide with the convex portions of the base material, the convex portions are likely to locally melt and alloy, and the anchor effect due to the solidification shrinkage stress of the molten particles also occurs mechanically, resulting in adhesion of the film. Strength becomes stronger. Further, when the base material 2 is preheated to a high temperature of 400 to 550 ° C. immediately before thermal spraying and the surface of the base material 2 is cleaned by a transfer arc, the surface is activated, and after the thermal spraying, the base material 2 and the coating film 3 are separated from each other. A diffusion layer is formed, and the base material 2 and the film 3 are firmly joined.
【００１６】皮膜３の厚さは５０〜５００μm に形成す
るのが好ましく、特に１００〜３００μm に形成するの
が好ましい。The thickness of the film 3 is preferably 50 to 500 .mu.m, more preferably 100 to 300 .mu.m.
【００１７】[0017]
【実施例】本発明を以下の具体的実施例によりさらに詳
細に説明する。図１は本発明の一実施例によるピストン
リングを示す概略断面図である。本発明のピストンリン
グ１は、鋳鉄材や鋼材等からなるピストンリング母材２
の外周摺動面に溝部４が削設され、その溝部４に溶射皮
膜３が形成されている。また、図２は本発明の他の実施
例によるピストンリングを示す概略断面図である。ピス
トンリング１は、ピストンリング母材２の平坦な外周摺
動面に溶射皮膜３が形成されている。The present invention will be described in more detail by the following specific examples. FIG. 1 is a schematic sectional view showing a piston ring according to an embodiment of the present invention. The piston ring 1 of the present invention comprises a piston ring base material 2 made of cast iron or steel.
The groove portion 4 is cut on the outer peripheral sliding surface of and the thermal spray coating 3 is formed on the groove portion 4. 2 is a schematic sectional view showing a piston ring according to another embodiment of the present invention. The piston ring 1 has a sprayed coating 3 formed on a flat outer peripheral sliding surface of a piston ring base material 2.
【００１８】〔実施例１〕本実施例では、図４に示す科
研式摩耗試験機により高温湿式摩耗試験を行った。試験
機は、回転可能なドラム型シリンダライナ材１８と、シ
リンダライナ材１８の外周面に摺接する供試材１５を押
圧するアーム１３と、アーム１３の一端に取り付けられ
た重錘１４と、アーム１３の他端に取り付けられたバラ
ンサ１６と、供試材１５とバランサ１６との間でアーム
１３を支えている支点１２とからなる。シリンダライナ
材１８は駆動装置（図示せず）によって所定の速度で回
転するとともに、ヒータ１７を内蔵して所望の温度に調
節され、供試材１５の湾曲面と摺接する。その際、シリ
ンダライナ材１８と供試材１５とが摺接する部位に潤滑
油１９が注油される。なお、アーム１３が供試材１５を
シリンダライナ材１８方向へ押圧する力は、重錘１４の
重量を変えることにより変化させることができる。その
力は供試材１５とシリンダライナ材１８との接触面圧と
なる。[Example 1] In this example, a high temperature wet wear test was carried out using a Kaken wear tester shown in FIG. The tester includes a rotatable drum-type cylinder liner material 18, an arm 13 that presses a test material 15 that is in sliding contact with the outer peripheral surface of the cylinder liner material 18, a weight 14 attached to one end of the arm 13, and an arm. The balancer 16 is attached to the other end of the armature 13, and the fulcrum 12 that supports the arm 13 between the sample material 15 and the balancer 16. The cylinder liner material 18 is rotated at a predetermined speed by a driving device (not shown), the heater 17 is incorporated therein, and the temperature is adjusted to a desired temperature, so that the cylinder liner material 18 comes into sliding contact with the curved surface of the test material 15. At that time, the lubricating oil 19 is applied to the portion where the cylinder liner material 18 and the test material 15 are in sliding contact with each other. The force with which the arm 13 presses the sample material 15 toward the cylinder liner material 18 can be changed by changing the weight of the weight 14. The force becomes the contact surface pressure between the test material 15 and the cylinder liner material 18.
【００１９】供試材１５の基材としては球状黒鉛鋳鉄材
（FCD 60）を使用し、縦１００mm、横５０mm、厚さ１０
mmの角柱状に加工し、さらにその一端面を湾曲面となる
ように研削加工した。次に、Cr3C2 粉末１０重量％、Mo
粉末６０重量％、Ni-Cr 合金粉末３０重量％（Ni：８０
重量％、Cr：２０重量％）からなる混合粉末を用意し
た。なお、それぞれの粉末は３２５メッシュであった。A nodular graphite cast iron material (FCD 60) is used as the base material of the test material 15, and the length is 100 mm, the width is 50 mm, and the thickness is 10.
It was processed into a square columnar shape of mm, and further, one end surface thereof was ground to form a curved surface. Next, Cr 3 C 2 powder 10% by weight, Mo
Powder 60% by weight, Ni-Cr alloy powder 30% by weight (Ni: 80
% By weight and Cr: 20% by weight). In addition, each powder was 325 mesh.
【００２０】その混合粉末を用いて、減圧プラズマ溶射
により供試材１５の湾曲面に約２００μm の厚さの溶射
皮膜を形成した。溶射条件は以下の通りであった。Using the mixed powder, a sprayed coating having a thickness of about 200 μm was formed on the curved surface of the test material 15 by reduced pressure plasma spraying. The thermal spraying conditions were as follows.
【００２１】溶射条件 使用ガン：メテコ社製LPC-9MB プラズマ溶射ガン 電圧：７０Ｖ 電流：５００Ａ 雰囲気ガス：Ar チャンバ内圧力：３０Torr 母材予熱温度：４００℃Thermal spraying conditions Used gun: LPC-9MB plasma spraying gun manufactured by Meteco Co., Ltd. Voltage: 70V Current: 500A Atmosphere gas: Ar Chamber pressure: 30 Torr Base material preheating temperature: 400 ° C.
【００２２】得られた供試材１５の湾曲面における金属
組織の顕微鏡写真（×１００）を図３に示す。図３によ
り明らかなように、溶射皮膜３と母材２の接合部は合金
化して拡散結合しており、皮膜３中には空孔が極めて少
ない。皮膜３中の空孔率は、平均で1.２体積％であっ
た。A micrograph (× 100) of the metal structure on the curved surface of the obtained test material 15 is shown in FIG. As is clear from FIG. 3, the joint between the thermal spray coating 3 and the base material 2 is alloyed and diffusion-bonded, and the coating 3 has very few pores. The porosity in the film 3 was 1.2% by volume on average.
【００２３】得られた供試材１５及びＦＣ２５からなる
シリンダライナ材１８を上記の科研式摩耗試験機に取り
付けて、以下に示す試験条件で高温湿式摩耗試験を行っ
た。供試材１５及びシリンダライナ材１８の耐摩耗性試
験の結果を図６に示す。The cylinder liner material 18 composed of the test material 15 and FC25 thus obtained was attached to the above Kaken wear tester, and a high temperature wet wear test was conducted under the following test conditions. The results of the wear resistance test of the test material 15 and the cylinder liner material 18 are shown in FIG.
【００２４】試験条件 摩擦速度：0.５０ｍ／秒 潤滑油：低粘度オイル シリンダライナ材温度：１８０℃ 給油量：３滴／分 重錘の重量：５０kg 時間：２４０分Test conditions Friction speed: 0.50 m / sec Lubricating oil: Low viscosity oil Cylinder liner material temperature: 180 ° C Lubrication amount: 3 drops / min Weight of weight: 50 kg Time: 240 min
【００２５】〔比較例１〕実施例１の供試材１５と同じ
基材に、Cr3C2 粉末１０重量％、Mo粉末６０重量％、Ni
-Cr 合金粉末３０重量％（Ni：８０重量％、Cr：２０重
量％）からなる混合粉末を用いて、実施例１と同様にし
て厚さが約２００μm の溶射皮膜を形成した。[Comparative Example 1] 10 wt% Cr 3 C 2 powder, 60 wt% Mo powder, and Ni on the same base material as the test material 15 of Example 1.
Using a mixed powder composed of 30% by weight of -Cr alloy powder (Ni: 80% by weight, Cr: 20% by weight), a thermal spray coating having a thickness of about 200 μm was formed in the same manner as in Example 1.
【００２６】得られた供試材１５と、実施例１と同じシ
リンダライナ材１８とを組み合わせ、実施例１と同様に
して高温湿式摩耗試験を行った。供試材１５及びシリン
ダライナ材１８の耐摩耗性試験の結果を図６に示す。な
お、図６は比較例１における供試材及びシリンダライナ
材の摩耗量を１００％として、実施例１における供試材
及びシリンダライナ材の摩耗量を割合（％）で示したも
のである。The obtained test material 15 and the same cylinder liner material 18 as in Example 1 were combined and a high temperature wet wear test was conducted in the same manner as in Example 1. The results of the wear resistance test of the test material 15 and the cylinder liner material 18 are shown in FIG. FIG. 6 shows the amount of wear of the sample material and the cylinder liner material in Example 1 as a ratio (%), with the amount of wear of the sample material and the cylinder liner material in Comparative Example 1 being 100%.
【００２７】図６から明らかなように、実施例１の供試
材は比較例１の供試材よりも耐摩耗性に優れ、また、相
手材であるシリンダライナ材の摩耗量も大幅に減少して
いる。As is apparent from FIG. 6, the test material of Example 1 is superior in wear resistance to the test material of Comparative Example 1, and the wear amount of the cylinder liner material, which is the counterpart material, is significantly reduced. is doing.
【００２８】[0028]
【発明の効果】以上詳述した通り、窒化チタン粉末、モ
リブデン粉末、ニッケル−クロム合金粉末及び白鋳鉄粉
末を所定の割合で混合してプラズマ溶射した皮膜が外周
摺動面に形成されている本発明のピストンリングは、耐
摩耗性に優れており、相手材に対する攻撃性が低い。As described above in detail, a titanium nitride powder, molybdenum powder, nickel-chromium alloy powder and white cast iron powder are mixed at a predetermined ratio and plasma sprayed to form a film on the outer peripheral sliding surface. INDUSTRIAL APPLICABILITY The piston ring of the invention has excellent wear resistance and low aggression against the mating material.
【図１】本発明の一実施例によるピストンリングを示す
概略断面図である。FIG. 1 is a schematic sectional view showing a piston ring according to an embodiment of the present invention.
【図２】本発明の別の実施例によるピストンリングを示
す概略断面図である。FIG. 2 is a schematic sectional view showing a piston ring according to another embodiment of the present invention.
【図３】実施例１においてプラズマ溶射皮膜を形成した
供試材の金属組織の顕微鏡写真（×１００）である。FIG. 3 is a micrograph (× 100) of a metal structure of a sample material on which a plasma spray coating was formed in Example 1.
【図４】科研式摩耗試験機の概略図である。FIG. 4 is a schematic view of a Kaken wear tester.
【図５】プラズマ溶射を行う装置（プラズマガン）を示
す概略断面図である。FIG. 5 is a schematic sectional view showing an apparatus (plasma gun) for performing plasma spraying.
【図６】実施例及び比較例の摩耗試験における供試材及
びシリンダライナ材の摩耗量を示すグラフである。FIG. 6 is a graph showing the amount of wear of the test material and the cylinder liner material in the wear test of Examples and Comparative Examples.
１ ピストンリング ２ ピストンリング母材 ３ 溶射皮膜 ４ 溝部 ５ プラズマガン ６ 陽極 ７ 陰極 ８ 電源 ９ アーク放電 １０ プラズマジェット流 １１ 原料粉末 １２ 支点 １３ アーム １４ 重錘 １５ 供試材 １６ バランサ １７ ヒータ １８ ドラム型シリンダライナ材 １９ 潤滑油 1 Piston Ring 2 Piston Ring Base Material 3 Thermal Spray Coating 4 Groove 5 Plasma Gun 6 Anode 7 Cathode 8 Power Supply 9 Arc Discharge 10 Plasma Jet Flow 11 Raw Material Powder 12 Support Point 13 Arm 14 Weight 15 Test Material 16 Balancer 17 Heater 18 Drum Type Cylinder liner material 19 Lubricating oil
Claims (1)
モリブデンが３０〜８０重量％、ニッケル−クロム合金
が１０〜４０重量％、からなるプラズマ溶射皮膜を少な
くとも外周摺動面に有する溶射ピストンリング。1. Fine chromium carbide 3 to 25% by weight,
A thermal spray piston ring having a plasma spray coating of molybdenum of 30 to 80% by weight and nickel-chromium alloy of 10 to 40% by weight on at least an outer peripheral sliding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2715893A JPH06221438A (en) | 1993-01-25 | 1993-01-25 | Flame sprayed piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2715893A JPH06221438A (en) | 1993-01-25 | 1993-01-25 | Flame sprayed piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06221438A true JPH06221438A (en) | 1994-08-09 |
Family
ID=12213255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2715893A Pending JPH06221438A (en) | 1993-01-25 | 1993-01-25 | Flame sprayed piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06221438A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375695A1 (en) * | 2001-02-28 | 2004-01-02 | Nippon Piston Ring Co., Ltd. | Wear-resistant sliding member |
| EP1600523A1 (en) * | 2004-05-24 | 2005-11-30 | Dana Corporation | Wear resistant coating for piston rings |
| WO2006117177A1 (en) * | 2005-05-03 | 2006-11-09 | Alfred Flamang | Method for coating wear-prone components and coated components |
| JP2016102233A (en) * | 2014-11-28 | 2016-06-02 | 日本ピストンリング株式会社 | Piston ring and manufacturing method of the same |
| JP2017226865A (en) * | 2016-06-20 | 2017-12-28 | 新日鉄住金マテリアルズ株式会社 | Base material with spray coating film |
| CN113430480A (en) * | 2021-06-15 | 2021-09-24 | 安徽工业大学 | Cr (chromium)3C2Enhanced NiCrMoW antifriction, wear-resistant and corrosion-resistant coating, preparation method and application thereof |
-
1993
- 1993-01-25 JP JP2715893A patent/JPH06221438A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375695A1 (en) * | 2001-02-28 | 2004-01-02 | Nippon Piston Ring Co., Ltd. | Wear-resistant sliding member |
| JP2004107678A (en) * | 2001-02-28 | 2004-04-08 | Nippon Piston Ring Co Ltd | Wear-resistant sliding member |
| EP1375695A4 (en) * | 2001-02-28 | 2006-08-09 | Nippon Piston Ring Co Ltd | Wear-resistant sliding member |
| EP1600523A1 (en) * | 2004-05-24 | 2005-11-30 | Dana Corporation | Wear resistant coating for piston rings |
| WO2006117177A1 (en) * | 2005-05-03 | 2006-11-09 | Alfred Flamang | Method for coating wear-prone components and coated components |
| JP2016102233A (en) * | 2014-11-28 | 2016-06-02 | 日本ピストンリング株式会社 | Piston ring and manufacturing method of the same |
| CN105648382A (en) * | 2014-11-28 | 2016-06-08 | 日本活塞环株式会社 | Piston ring and manufacturing method thereof |
| KR20160064981A (en) | 2014-11-28 | 2016-06-08 | 닛폰 피스톤 린구 가부시키가이샤 | Piston ring and manufacturing method thereof |
| JP2017226865A (en) * | 2016-06-20 | 2017-12-28 | 新日鉄住金マテリアルズ株式会社 | Base material with spray coating film |
| CN113430480A (en) * | 2021-06-15 | 2021-09-24 | 安徽工业大学 | Cr (chromium)3C2Enhanced NiCrMoW antifriction, wear-resistant and corrosion-resistant coating, preparation method and application thereof |
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