JPH09196176A - Piston ring - Google Patents
Piston ringInfo
- Publication number
- JPH09196176A JPH09196176A JP8010371A JP1037196A JPH09196176A JP H09196176 A JPH09196176 A JP H09196176A JP 8010371 A JP8010371 A JP 8010371A JP 1037196 A JP1037196 A JP 1037196A JP H09196176 A JPH09196176 A JP H09196176A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- test piece
- resistance
- piston ring
- comparative example
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は少なくとも外周摺動
面に溶射皮膜が形成された内燃機関用ピストンリングの
改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a piston ring for an internal combustion engine having a sprayed coating formed on at least an outer peripheral sliding surface.
【０００２】[0002]
【従来の技術】内燃機関用ピストンリングの耐摩耗性を
向上するため、特開平３−１７２６８１号公報は、少な
くともその外周摺動面母材上に、Ｎｉ−Ｃｒ合金と、Ｃ
ｒ3 Ｃ 2 とからなる単層の溶射皮膜をプラズマ溶射によ
って形成することを提案している。また、又特開平６−
２５６７８６号公報はモリブデン、クロムを主成分とす
るコバルト基もしくはニッケル基摺動面材料、又は、ク
ロム、コバルト、ニッケルを主成分とする鉄基摺動面材
料の単層溶射皮膜をレーザ溶射又は減圧プラズマ溶射に
レーザ照射を併用したレーザ・プラズマハイブリッド溶
射によって形成することを提案している。BACKGROUND OF THE INVENTION Wear resistance of piston rings for internal combustion engines
Japanese Patent Laid-Open No. 3-172681 discloses a small
At least the outer peripheral sliding surface of the base material, Ni-Cr alloy, C
rThree C Two A single layer spray coating consisting of
It is proposed to form. In addition, JP-A-6-
No. 256786 contains molybdenum and chromium as main components.
Cobalt-based or nickel-based sliding surface material
Iron-based sliding surface material mainly composed of ROM, cobalt and nickel
Laser spraying or low pressure plasma spraying of single layer spray coating
Laser / plasma hybrid melting with laser irradiation
Proposed to be formed by shooting.
【０００３】[0003]
【発明が解決しようとする課題】しかし、プラズマ溶射
法によって密着性に優れた高緻密性の溶射皮膜を形成す
ることは困難であり、形成された溶射皮膜は耐剥離性が
低く、空孔が多いため、油膜破断が発生しやすく、耐相
手攻撃性に劣るという問題があった。又、プラズマ溶射
法は粉末が約１００００度以上の炎にさらされるため、
熱分解したり、気化したりして、溶射材本来の特性が発
揮できないおそれがある。However, it is difficult to form a highly dense sprayed coating having excellent adhesion by the plasma spraying method, and the formed sprayed coating has low peeling resistance and voids. Since it is large, the oil film is likely to be broken and there is a problem that the attack resistance against the opponent is poor. Also, in the plasma spraying method, the powder is exposed to a flame of about 10,000 degrees or more,
There is a possibility that the original properties of the thermal spray material may not be exhibited due to thermal decomposition or vaporization.
【０００４】さらに、プラズマ溶射ガンは溶射粉末を炎
の噴出方向に対して直角に近い角度で供給するため、溶
射粒子の溶射皮膜内での分散にばらつきを生ずるという
問題があった。本発明は上記問題を解決するためになさ
れたものであり、その目的とするところは、密着性が高
く、緻密で空孔がきわめて少ない溶射皮膜であって、耐
摩耗性及び耐相手攻撃性に優れ、溶射によって溶射材本
来の特性が失われるおそれのない溶射皮膜をピストンリ
ングの外周摺動面に形成することにある。Further, since the plasma spray gun supplies the spray powder at an angle close to a right angle to the jet direction of the flame, there is a problem in that dispersion of the spray particles in the spray coating varies. The present invention has been made to solve the above problems, and an object of the present invention is a sprayed coating having high adhesiveness, high density, and very few pores, and having excellent wear resistance and opponent attack resistance. It is to form a thermal spray coating on the outer peripheral sliding surface of the piston ring, which is excellent and does not lose the original properties of the thermal spray material due to thermal spraying.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するた
め、本発明が採用する手段は、図１及び図２に示すよう
に、凹形又は凸形にしたピストンリング母材Ｍの外周摺
動面に、アンダーコートとしての第一層Ａと、トップコ
ートとしての第二層Ｂとからなる溶射皮膜Ｃを、それぞ
れ高速酸素火炎（ＨＶＯＦ）溶射によって形成したこと
にある。第一層の溶射材は、Ｃｒ3 Ｃ2 とＮｉ−Ｃｒ合
金（２０〜８０重量％Ｃｒ3 Ｃ2 、残ＮｉＣｒ）、好ま
しくはＣｒ3 Ｃ2 ５０重量％と残部Ｎｉ−Ｃｒ合金から
なり、第二層Ｂの溶射材は、Ｍｏ、Ｃｒを主成分とする
コバルト基もしくはニッケル基摺動面材料（デロロステ
ライト社商品名：トリバロイ）に硬質粒子としてＣｒ3
Ｃ2／Ｎｉ−Ｃｒを３０重量％以下分散させる。To achieve the above object, the means adopted by the present invention is, as shown in FIGS. 1 and 2, an outer peripheral sliding of a piston ring base material M which is concave or convex. A thermal spray coating C composed of a first layer A as an undercoat and a second layer B as a topcoat was formed on each surface by high velocity oxygen flame (HVOF) thermal spraying. The first layer sprayed material, Cr 3 C 2 and NiCr alloy (20-80 wt% Cr 3 C 2, residual NiCr), preferably of Cr 3 C 2 50% by weight and the balance NiCr alloy, The thermal spray material of the second layer B is a cobalt-based or nickel-based sliding surface material containing Mo and Cr as main components (Derolostellite Co., trade name: Trivalloy), and Cr 3 as hard particles.
C 2 / Ni-Cr and disperse 30 weight% or less.
【０００６】高速酸素火炎（ＨＶＯＦ）溶射は図３に示
すメテコ社製ダイヤモンドジェットガン（商品名）を用
いて実施する。ガン20は二重構造のノズル21と、そのノ
ズルに外嵌したエアキャップ23と、そのエアキャップを
支持するエアキャップボディ24からなる。ノズル21は内
側がインサート25、外側がシェル26である。インサート
25の内部中央にパウダーインジェクター22が挿入され、
その内部に窒素ガスで搬送された溶射材粉末が送入され
る。パウダーインジェクター22とインサート25の間の環
状空隙に送入された圧縮空気が溶射材粉末をガン20から
噴出させる。High-velocity oxygen flame (HVOF) thermal spraying is carried out using a Metco diamond jet gun (trade name) shown in FIG. The gun 20 is composed of a nozzle 21 having a double structure, an air cap 23 fitted on the nozzle, and an air cap body 24 supporting the air cap. The nozzle 21 has an insert 25 inside and a shell 26 outside. insert
The powder injector 22 is inserted in the center of the inside of 25,
The thermal spray material powder conveyed by nitrogen gas is fed into the inside. Compressed air introduced into the annular gap between the powder injector 22 and the insert 25 ejects the thermal spray material powder from the gun 20.
【０００７】インサート25とシェル26の間の環状空隙に
酸素−プロパン、又は酸素−プロピレン、又は酸素−水
素の燃焼用ガスが送入され、そのガスはガン20から噴出
し、出口で点火する。点火したガスは２７００℃程度の
円筒形火炎を形成して同じく噴出する溶射材粉末を包
む。この火炎により溶射材粉末は均一に加熱されて溶融
する。溶融した溶射材粉末は８００ｍ／ｓｅｃ以上の高
速でピストンリング外周摺動面母材に衝突する。衝突し
た溶射材粉末は瞬時に偏平化し、母材温度まで急冷し、
そこに溶射皮膜を形成する。シェル26とエアキャップ23
の間の環状空隙にも圧縮空気が圧入される。この圧縮空
気は火炎を包み、ガン20を冷却する。An oxygen-propane, oxygen-propylene, or oxygen-hydrogen combustion gas is admitted into the annular space between the insert 25 and the shell 26, which gas is ejected from the gun 20 and ignited at the outlet. The ignited gas forms a cylindrical flame at about 2700 ° C. and also encloses the spraying material powder which is also ejected. The flame causes the thermal spray material powder to be uniformly heated and melted. The molten thermal spray material powder collides with the base material of the outer peripheral sliding surface of the piston ring at a high speed of 800 m / sec or more. The thermal spray material powder that collided is instantly flattened and rapidly cooled to the base material temperature.
A thermal spray coating is formed there. Shell 26 and air cap 23
Compressed air is also press-fitted into the annular space between the two. This compressed air wraps the flame and cools the gun 20.
【０００８】溶射材粉末は火炎軸と同方向の軸心方向に
供給されるため、粉末粒子は均一に分散する。粉末粒子
は８００ｍ／ｓｅｃ以上の高速火炎により高速で母材に
衝突して皮膜を形成するため、緻密性及び密着性が高
く、きわめて空孔の少ない皮膜となる。トリバロイは相
手攻撃性が低いが、トリバロイ単独の溶射皮膜は、剥離
しやすく母材の腐食を防止することができない。特に腐
食性の高い舶用ディーゼルエンジンは母材と溶射層との
境界での腐食が顕著であり、溶射層の剥離が発生しやす
い。これを防止するため、耐摩耗性及びバリアー性の高
いＣｒ3 Ｃ2とＮｉ−Ｃｒ合金溶射層をアンダーコート
の第一層として形成する。この第一層が母材との境界部
における腐食による剥離を防止する。Since the thermal spray material powder is supplied in the axial direction which is the same as the flame axis, the powder particles are uniformly dispersed. Since the powder particles collide with the base material at a high speed by a high-speed flame of 800 m / sec or more to form a film, the film has high denseness and adhesion, and has a very small number of pores. Triballoy has a low opponent attacking property, but the spray coating of Triballoy alone is easily peeled off and cannot prevent the corrosion of the base material. Particularly in a highly corrosive marine diesel engine, corrosion at the boundary between the base material and the sprayed layer is remarkable, and the sprayed layer is liable to peel off. In order to prevent this, a Cr 3 C 2 and Ni—Cr alloy sprayed layer having high wear resistance and barrier properties is formed as the first undercoat layer. This first layer prevents peeling due to corrosion at the boundary with the base material.
【０００９】[0009]
【発明の実施の形態】高速酸素火炎（ＨＶＯＦ）は火炎
温度が２７００℃程度と比較的低温であるため、溶射材
粉末が熱分解又は気化するおそれは少なく、溶射材は本
来の特性を維持し発揮する。第一層のＣｒ3 Ｃ2 とＮｉ
−Ｃｒ合金は耐摩耗性及び耐スカッフィング性に優れて
いるから、たとえ第二層の摩減により第一層が露出して
も、ピストンリングの耐摩耗性及び耐スカッフィング性
は維持される。しかし、Ｃｒ3Ｃ2 が２０重量％未満の
場合は耐摩耗性、耐スカッフィング性が劣り、又、８０
重量％を超えると、相手攻撃性が高くなり、ライナの表
面を損傷するので、第一層の溶射材粉末はＣｒ3 Ｃ2 ２
０〜８０重量％ 、残部Ｎｉ−Ｃｒ合金とする。トップ
コートとしての第二層の溶射材粉末は耐摩耗性及び耐ス
カッフィング性に優れ、かつ相手攻撃性の低いトリバロ
イＴ８００（商品名）に硬質粒子Ｃｒ3 Ｃ 2 ／Ｎｉ−Ｃ
ｒ粉末を分散させて自己摩耗性及び耐スカッフィング性
を向上する。しかし、硬質粒子Ｃｒ3 Ｃ2 ／Ｎｉ−Ｃｒ
粉末を３０重量％以上分散させると、比較的硬質な鋳鉄
製、例えばボロン鋳鉄製ライナでも損傷し、相手攻撃性
が高くなるので、硬質粒子Ｃｒ3 Ｃ2 ／Ｎｉ−Ｃｒ粉末
の分散量は３０重量％以下とする。尚、必要に応じトリ
バロイＴ−４００（商品名）又はトリバロイＴ−７００
（商品名）を用いることもできる。DETAILED DESCRIPTION OF THE INVENTION A high velocity oxygen flame (HVOF) is a flame.
Since the temperature is relatively low, around 2700 ° C,
The powder is less likely to be thermally decomposed or vaporized.
Maintains and demonstrates the original characteristics. 1st layer CrThree CTwo And Ni
-Cr alloy has excellent wear resistance and scuffing resistance.
Therefore, even if the second layer is worn out, the first layer is exposed.
Wear resistance and scuffing resistance of piston ring
Is maintained. However, CrThreeCTwo Less than 20% by weight
In case of poor wear resistance and scuffing resistance,
If the weight% is exceeded, the opponent's aggression becomes high and the liner's table
Since the surface is damaged, the thermal spray material powder of the first layer is CrThree CTwo 2
0 to 80% by weight, balance Ni-Cr alloy. Top
The second layer of thermal spray material powder as a coat is resistant to wear and abrasion.
Tribalo with excellent cuffing and low opponent attack
Hard particle Cr on T800 (trade name)Three C Two / Ni-C
Dispersing r powder to self-wear and scuffing resistance
To improve. However, hard particles CrThree CTwo / Ni-Cr
Cast iron that is relatively hard when 30% by weight or more of powder is dispersed
Made of, for example, a boron cast iron liner, which also damages the opponent
, So hard particles CrThree CTwo / Ni-Cr powder
The amount of dispersion is 30% by weight or less. If necessary,
Valloy T-400 (trade name) or Triballoy T-700
(Product name) can also be used.
【００１０】[0010]
【実施例】本発明のピストンリングを各種のテストによ
って説明する。同一ピストンリング用鋳鉄材の母材上に
次の４種類の皮膜を形成してテスト片とした。 テスト片Ｎｏ．１（比較例）：クロムメッキ皮膜（３０
０μｍ） テスト片Ｎｏ．２（比較例）：単層溶射皮膜（３００μ
ｍ） Ｃｒ3 Ｃ2 ：５０％、Ｎｉ−Ｃｒ：５０％、 テスト片Ｎｏ．３（比較例）：単層溶射皮膜（３００μ
ｍ）トリバロイＴ８００ テスト片Ｎｏ．４（比較例）：複層溶射皮膜（３５０μ
ｍ） 第一層 Ｃｒ3 Ｃ2 ：５０％、Ｎｉ−Ｃｒ：５０％（５
０μｍ） 第二層 トリバロイＴ−８００（３００μｍ） テスト片Ｎｏ．５（実施例）：複層溶射皮膜（３５０μ
ｍ） 第一層 Ｃｒ3 Ｃ2 ：５０％、Ｎｉ−Ｃｒ：５０％（５
０μｍ） 第二層 トリバロイＴ−８００＋Ｃｒ3 Ｃ2 ／Ｎｉ−Ｃ
ｒ（３００μｍ） 溶射皮膜は高速酸素火炎（ＨＶＯＦ）溶射によるもので
あり、図３に示すガンを使用して形成した。その溶射条
件は次のとおりである。The piston ring of the present invention will be described by various tests. The following four types of coatings were formed on a base material of the same cast iron material for piston rings to obtain test pieces. Test piece No. 1 (Comparative example): Chrome plating film (30
0 μm) Test piece No. 2 (Comparative example): Single layer sprayed coating (300μ
m) Cr 3 C 2: 50 %, Ni-Cr: 50%, the test piece No. 3 (Comparative example): Single layer sprayed coating (300μ
m) Triballoy T800 test piece No. 4 (Comparative example): Multi-layer spray coating (350μ
m) the first layer Cr 3 C 2: 50%, Ni-Cr: 50% (5
0 μm) Second layer Triballoy T-800 (300 μm) Test piece No. 5 (Example): Multi-layer sprayed coating (350μ
m) the first layer Cr 3 C 2: 50%, Ni-Cr: 50% (5
0 μm) Second layer Triballoy T-800 + Cr 3 C 2 / Ni-C
The r (300 μm) sprayed coating was formed by high-velocity oxygen flame (HVOF) spraying and was formed using the gun shown in FIG. The thermal spraying conditions are as follows.
【００１１】燃焼ガス：酸素−プロパン 溶射材粉末： Ｃｒ3 Ｃ2 ：５０％、Ｎｉ−Ｃｒ：５０％：メテコ ダ
イアマロイ３００６（商品名）、−４５＋１０μｍ（＃
３２５アンダー） トリバロイＴ−８００：メテコ ダイアマロイ３００１
（商品名）、−４５＋１０μｍ（＃３２５アンダー） Ｃｒ3 Ｃ2 ：７５％、Ｎｉ−Ｃｒ：２５％（Ｎｉ：８０
％、Ｃｒ：２０％）−４５＋１０μｍ（＃３２５アンダ
ー） 各テスト片について各種の評価試験を実施した。 耐腐食性試験：各テスト片を０．５％Ｈ2 ＳＯ4 水溶液
に浸漬し、浸漬期間と皮膜の剥離脱落の有無を調査し
た。結果は図４に示すとおりであり、１４日間の浸漬
後、比較例テスト片Ｎｏ．１、Ｎｏ．２、Ｎｏ．４、実
施例テスト片Ｎｏ．５は皮膜が全く剥離しなかったが、
比較例テスト片Ｎｏ．３は浸漬２日後に剥離した。した
がって、比較例テスト片Ｎｏ．１、Ｎｏ．２、Ｎｏ．
４、実施例テスト片Ｎｏ．５の耐腐食性は良好である
が、比較例Ｎｏ．３の耐腐食性は不良である。 耐摩耗性及び耐相手攻撃性試験：図７に模式的に示すア
ムスラー型摩耗試験機により、各テスト片と相手材の摩
耗量を測定した。摩耗試験機の容器15内には潤滑油14が
溜められており、摩耗試験用の相手材12が潤滑油14に部
分的に浸されている。相手材12は円板状もしくはローラ
状のものであり、一定の速度で回転している。この状態
で、テスト片11を相手材12の外周面に接した状態で回転
軸に垂直に押圧し、摩耗の程度を測定したものである。Combustion gas: Oxygen-propane Thermal spraying material powder: Cr 3 C 2 : 50%, Ni-Cr: 50%: Metco Diamalloy 3006 (trade name), -45 + 10 μm (#
325 under) Triballoy T-800: Metco Diamalloy 3001
(Brand name), -45 + 10 μm (# 325 under) Cr 3 C 2 : 75%, Ni-Cr: 25% (Ni: 80
%, Cr: 20%) −45 + 10 μm (# 325 under) Various evaluation tests were performed on each test piece. Corrosion resistance test: Each test piece was immersed in a 0.5% H 2 SO 4 aqueous solution, and the immersion period and the presence or absence of peeling off of the film were investigated. The results are shown in Fig. 4, and after the immersion for 14 days, the test piece No. 1, No. 2, No. 4, Example test piece No. In No. 5, the film did not peel off at all,
Comparative Example Test Piece No. 3 was peeled off 2 days after immersion. Therefore, the comparative test piece No. 1, No. 2, No.
4, Example test piece No. Although the corrosion resistance of Comparative Example No. 5 is good, The corrosion resistance of No. 3 is poor. Abrasion resistance and opponent attack resistance test: The abrasion amount of each test piece and the counterpart material was measured by an Amsler type abrasion tester schematically shown in FIG. Lubricating oil 14 is stored in a container 15 of the abrasion tester, and a mating material 12 for abrasion test is partially immersed in the lubricating oil 14. The mating member 12 has a disk shape or a roller shape, and rotates at a constant speed. In this state, the test piece 11 was pressed perpendicularly to the rotating shaft while being in contact with the outer peripheral surface of the mating member 12, and the degree of wear was measured.
【００１２】測定条件は以下の通りである。 周速 ：１ｍ／ｓ 荷重 ：６０Kg 潤滑油 ：軸受油（日本石油 スピノックスＳ２） 油温 ：室温（２５℃±１０℃） 摩擦時間：１００時間 相手材 ：ターカロイ（日本ピストンリング（株）の商
品名としてしられているボロン鋳鉄） 測定結果は図５に示す通りであった。The measurement conditions are as follows. Peripheral speed: 1 m / s Load: 60 kg Lubricating oil: Bearing oil (Nippon Petroleum Spinox S2) Oil temperature: Room temperature (25 ° C ± 10 ° C) Friction time: 100 hours Counterpart: Turkaloy (Japan Piston Ring Co., Ltd.) The result of the measurement is as shown in FIG.
【００１３】この図から、耐摩耗性は順位１が実施例テ
スト片Ｎｏ．５、順位２が比較例テスト片Ｎｏ．２，順
位３が比較例テスト片Ｎｏ．３、Ｎｏ．４、順位４が比
較例テスト片Ｎｏ．１であることがわかる。又、比較例
テスト片Ｎｏ．２の相手材摩耗量は大きく、比較例テス
ト片Ｎｏ．１は比較例テスト片Ｎｏ．２の半分であり、
比較例テスト片Ｎｏ．３、Ｎｏ．４の相手材摩耗量は小
さく、実施例テスト片Ｎｏ．５は比較例テスト片Ｎｏ．
１と比較例テスト片Ｎｏ．２の中間であるから、耐相手
攻撃性については、比較例テスト片Ｎｏ．２は不良であ
り、比較例テスト片Ｎｏ．１はやや良いが、実施例テス
ト片Ｎｏ．５は比較例テスト片Ｎｏ．１よりも少し良
い。比較例テスト片Ｎｏ．３，Ｎｏ．４はさらに良好で
ある。 耐スカッフィング性試験：各テスト片の耐スカッフィン
グ性を、図８に模式的に示す回転式平面滑り摩擦試験機
により測定した。摩擦試験機は、一定速度で回転する相
手材12の回転面に、テスト片11を一定時間、所定の面圧
（Ｐ）で圧接し、スカッフィングの発生した時の面圧を
限界面圧として測定したものである。圧接操作は、初期
面圧を２５Kgｆとし、面圧を３０分後に５０Kgｆ、それ
から５分毎に１０Kgｆずつ漸次増加させていく方法で行
われた。From this figure, the wear resistance is ranked 1st in the example test piece No. 5 and rank 2 are comparative example test piece Nos. 2 and rank 3 are comparative example test piece Nos. 3, No. 4 and rank 4 are comparative example test piece Nos. It turns out that it is 1. In addition, the comparative example test piece No. The amount of wear of the mating material of No. 2 is large, and the test piece No. No. 1 is a comparative example test piece No. Half of two,
Comparative Example Test Piece No. 3, No. The wear amount of the mating material of No. 4 is small, and the test piece No. No. 5 is a comparative example test piece No.
1 and a comparative example test piece No. Since it is in the middle of 2, the comparative example test piece No. No. 2 is defective, and the comparative example test piece No. 1 is somewhat good, but the example test piece No. No. 5 is a comparative example test piece No. A little better than 1. Comparative Example Test Piece No. 3, No. 4 is even better. Scuffing resistance test: The scuffing resistance of each test piece was measured by a rotary flat sliding friction tester schematically shown in FIG. The friction tester presses the test piece 11 against the rotating surface of the mating member 12 that rotates at a constant speed for a certain period of time with a predetermined surface pressure (P), and measures the surface pressure when scuffing occurs as the limit surface pressure. It was done. The pressing operation was carried out by a method in which the initial surface pressure was set to 25 Kgf, the surface pressure was increased to 50 Kgf after 30 minutes, and then gradually increased by 10 Kgf every 5 minutes.
【００１４】測定条件は以下の通りである。 滑り速度：５ｍ／ｓｅｃ 潤滑油 ：ＳＡＥ３０＋白灯油（１：１） 油量 ：無給油、初期塗布 相手材 ：ターカロイ 測定結果は図６に示す通りであった。この図から、耐ス
カッフィング性は順位１が実施例テスト片Ｎｏ．５、順
位２が比較例テスト片Ｎｏ．２、順位３が比較例テスト
片Ｎｏ．３、Ｎｏ．４、順位４が比較例テスト片Ｎｏ．
１である。The measurement conditions are as follows. Sliding speed: 5 m / sec Lubricating oil: SAE30 + White kerosene (1: 1) Oil amount: Oil-free, initial application Mating material: Turcaloy The measurement results were as shown in FIG. From this figure, the scuffing resistance is ranked No. 1 in the example test piece No. 5 and rank 2 are comparative example test piece Nos. 2 and rank 3 are comparative example test piece Nos. 3, No. 4 and rank 4 are comparative example test piece Nos.
It is one.
【００１５】これらの評価試験から、比較例テスト片Ｎ
ｏ．１のクロームメッキ皮膜は、耐摩耗性及び耐相手攻
撃性が、比較例テスト片Ｎｏ．２のＣｒ3 Ｃ2 −ＮｉＣ
ｒ単層溶射皮膜は耐相手攻撃性が、比較例テスト片Ｎ
ｏ．３のトリバロイＴ８００単層溶射皮膜は耐腐食性
が、比較例テスト片Ｎｏ．４の複層溶射皮膜は耐摩耗性
がそれぞれ不良であるが、実施例テスト片Ｎｏ．５は耐
腐食性、耐摩耗性、耐スカッフィング性のすべてにおい
て良好であり、耐相手攻撃性が少し低いだけである。From these evaluation tests, the test piece N of the comparative example was tested.
o. The chrome-plated film of No. 1 has a wear resistance and an attack resistance against the opponent, which are comparative test pieces No. 2 Cr 3 C 2 -NiC
r Single layer thermal spray coating has resistance to opponent attack, but comparative example test piece N
o. The Triballoy T800 single-layer sprayed coating of No. 3 has a corrosion resistance, but the test piece No. Although the multi-layer sprayed coating of No. 4 has poor wear resistance, the test piece No. No. 5 is good in all of corrosion resistance, wear resistance, and scuffing resistance, and has a slightly low attack resistance against the opponent.
【００１６】[0016]
【発明の効果】上記のとおり、本発明のピストンリング
は少なくとも外周摺動面に、Ｃｒ3 Ｃ 2 とＮｉ−Ｃｒ合
金のアンダーコート溶射層とトリバロイとＫＣ−２１硬
質粒子の混合粉よりなるトップコート溶射層皮膜を、高
速酸素火炎（ＨＶＯＦ）溶射により形成したから、耐摩
耗性及び耐スカッフィング性については従来のものより
も優れ、耐腐食性は従来のものと同様であり、耐相手攻
撃性については従来のものよりも少し劣る程度である。
したがって、このピストンリングは高度の耐腐食性が要
求される舶用ディーゼルエンジンはもとより、耐スカッ
フィング性が要求される自動車用ディーゼルエンジンに
も使用することができるという格別の効果を奏する。As described above, the piston ring of the present invention
Is Cr at least on the outer peripheral sliding surface.Three C Two And Ni-Cr
Gold undercoat sprayed layer, Triballoy and KC-21 hard
Of the topcoat sprayed layer coating consisting of mixed powder of fine particles
Since it is formed by rapid oxygen flame (HVOF) spraying,
Wear resistance and scuffing resistance are better than conventional ones.
It is also excellent in corrosion resistance similar to conventional ones,
The percussion ability is slightly inferior to the conventional one.
Therefore, this piston ring requires a high degree of corrosion resistance.
Not only the required marine diesel engine,
For diesel engines for automobiles that require fining
It also has the special effect that it can also be used.
【図１】は本発明の一実施例のピストンリングの断面
図、FIG. 1 is a sectional view of a piston ring according to an embodiment of the present invention,
【図２】は本発明の別の実施例の図１に相当する図、FIG. 2 is a view corresponding to FIG. 1 of another embodiment of the present invention,
【図３】は高速酸素火炎溶射を実施するガンの模式的断
面図、FIG. 3 is a schematic sectional view of a gun for performing high-speed oxygen flame spraying,
【図４】は本発明の実施例及び比較例の耐腐食性試験の
結果を示すグラフ、FIG. 4 is a graph showing the results of the corrosion resistance test of Examples and Comparative Examples of the present invention,
【図５】は本発明の実施例及び比較例の耐摩耗性及び耐
相手攻撃性試験の結果を示すグラフ、FIG. 5 is a graph showing the results of abrasion resistance and opponent attack resistance tests of Examples and Comparative Examples of the present invention,
【図６】は本発明の実施例及び比較例の耐スカッフィン
グ性試験の結果を示すグラフ、FIG. 6 is a graph showing the results of the scuffing resistance test of Examples and Comparative Examples of the present invention,
【図７】は耐摩耗性及び耐相手攻撃性試験を実施する試
験機の略図、FIG. 7 is a schematic diagram of a testing machine for carrying out abrasion resistance and opponent attack resistance tests,
【図８】は耐スカッフィング性試験を実施する試験機の
略図、FIG. 8 is a schematic diagram of a testing machine for carrying out a scuffing resistance test,
Ａ：第一層、 Ｂ：第二層、Ｍ：母材、 Ｃ：溶射皮膜、 10：ピストンリング A: First layer, B: Second layer, M: Base material, C: Thermal spray coating, 10: Piston ring
Claims (1)
酸素火炎（ＨＶＯＦ）溶射により形成されたピストンリ
ングであって、前記溶射皮膜はアンダーコートとしての
第一層とトップコートとしての第二層からなり、前記第
一層はＣｒ3Ｃ2 ２０〜８０重量％とＮｉ−Ｃｒ合金残
部とからなり、前記第二層はＭｏ、Ｃｒを主成分とする
コバルト基もしくはニッケル基摺動面材料に硬質粒子と
してＣｒ3 Ｃ2 ／Ｎｉ−Ｃｒを３０重量％以下分散させ
てなることを特徴とするピストンリング。1. A piston ring in which a thermal spray coating is formed on at least an outer peripheral sliding surface by high velocity oxygen flame (HVOF) thermal spraying, the thermal spray coating being a first layer as an undercoat and a second layer as a topcoat. The first layer is composed of 20 to 80% by weight of Cr 3 C 2 and the balance of Ni—Cr alloy, and the second layer is composed of a cobalt-based or nickel-based sliding surface material containing Mo and Cr as main components. A piston ring, characterized in that Cr 3 C 2 / Ni-Cr is dispersed as hard particles in an amount of 30% by weight or less.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8010371A JPH09196176A (en) | 1996-01-24 | 1996-01-24 | Piston ring |
| SE9700162A SE516491C2 (en) | 1996-01-24 | 1997-01-21 | Piston ring with flame-sprayed composite coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8010371A JPH09196176A (en) | 1996-01-24 | 1996-01-24 | Piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09196176A true JPH09196176A (en) | 1997-07-29 |
Family
ID=11748303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8010371A Pending JPH09196176A (en) | 1996-01-24 | 1996-01-24 | Piston ring |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH09196176A (en) |
| SE (1) | SE516491C2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004018728A1 (en) * | 2002-08-26 | 2004-03-04 | Dana Corporation | Process of thermally spraying coatings |
| US6780474B2 (en) | 2002-08-26 | 2004-08-24 | Dana Corporation | Thermally sprayed chromium nitride coating |
| US7332199B2 (en) | 2002-02-28 | 2008-02-19 | Koncentra Marine & Power Ab | Thermal spraying of a piston ring |
| JPWO2011064888A1 (en) * | 2009-11-30 | 2013-04-11 | 日本ピストンリング株式会社 | piston ring |
| WO2020184092A1 (en) * | 2019-03-12 | 2020-09-17 | 三菱重工業株式会社 | Turbine rotor blade and contact surface production method |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005020999A1 (en) * | 2005-05-03 | 2006-11-09 | Alfred Flamang | Process for coating components exposed to wear and coated component |
-
1996
- 1996-01-24 JP JP8010371A patent/JPH09196176A/en active Pending
-
1997
- 1997-01-21 SE SE9700162A patent/SE516491C2/en not_active IP Right Cessation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7332199B2 (en) | 2002-02-28 | 2008-02-19 | Koncentra Marine & Power Ab | Thermal spraying of a piston ring |
| WO2004018728A1 (en) * | 2002-08-26 | 2004-03-04 | Dana Corporation | Process of thermally spraying coatings |
| US6780474B2 (en) | 2002-08-26 | 2004-08-24 | Dana Corporation | Thermally sprayed chromium nitride coating |
| US6833165B2 (en) | 2002-08-26 | 2004-12-21 | Dana Corporation | Thermally sprayed coatings |
| JPWO2011064888A1 (en) * | 2009-11-30 | 2013-04-11 | 日本ピストンリング株式会社 | piston ring |
| JP5557850B2 (en) * | 2009-11-30 | 2014-07-23 | 日本ピストンリング株式会社 | piston ring |
| WO2020184092A1 (en) * | 2019-03-12 | 2020-09-17 | 三菱重工業株式会社 | Turbine rotor blade and contact surface production method |
| JP2020148125A (en) * | 2019-03-12 | 2020-09-17 | 三菱重工業株式会社 | Turbine rotor blade and method for manufacturing contact surface |
| CN113439150A (en) * | 2019-03-12 | 2021-09-24 | 三菱动力株式会社 | Turbine rotor blade and contact surface manufacturing method |
| US11946389B2 (en) | 2019-03-12 | 2024-04-02 | Mitsubishi Heavy Industries, Ltd. | Turbine rotor blade and contact surface manufacturing method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE516491C2 (en) | 2002-01-22 |
| SE9700162D0 (en) | 1997-01-21 |
| SE9700162L (en) | 1997-07-25 |
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