JPS5827862A - Piston ring - Google Patents
Piston ringInfo
- Publication number
- JPS5827862A JPS5827862A JP12526181A JP12526181A JPS5827862A JP S5827862 A JPS5827862 A JP S5827862A JP 12526181 A JP12526181 A JP 12526181A JP 12526181 A JP12526181 A JP 12526181A JP S5827862 A JPS5827862 A JP S5827862A
- Authority
- JP
- Japan
- Prior art keywords
- piston ring
- layer
- spray coating
- based alloy
- flame spray
- 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
-
- 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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は内燃機関に用いられるピストンリングに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piston ring used in an internal combustion engine.
近年の内燃機関の使用条件は高出力１高回転の使用に加
え為排ガス対策による使用条件の悪化等極めて苛酷な使
用条件下にある。In recent years, internal combustion engines have been under extremely harsh operating conditions, such as high output and high rotation speeds, as well as worsening operating conditions due to exhaust gas countermeasures.
この苛酷な使用条件下で使用されるピストンリングに今
１最も要求される事項は、ピストンリング自身が高度な
耐摩耗性を有し且つ、相手材であるシリンダ内壁も減す
ことの少ないピストンリングである。The most important requirement for piston rings used under these harsh operating conditions is that the piston ring itself has a high degree of wear resistance, and that the inner wall of the cylinder, which is the mating material, is not damaged as much. It is.
このような要求を満足するピストンリングの研究１開発
は盛んに行なわれ罵その１つの成果として１溶射ピスト
ンリングがある。溶射ピストンリングは古い技術であシ
最初はＭｏ溶射が行なわれていたが、近時の要求に充分
に満足し得なくなり、近時多くの溶射材料の開発が行な
われているがいまだ充分要求を満足する溶射材料が開発
されていないのが現状である。また島溶射材料と表面処
理を有効に結合して目的とする優れたピストンリングを
得る試みもなされている。例えば実公昭４６−４５６４
号「ピストンリング」に見られる如く、ピストンリング
の摺動面に鋼類を溶射しくこれに浸硫又は窒化処理を施
したピストンリングがある。Research and development of piston rings that satisfy these requirements has been actively carried out, and one of the results of this research is the development of a thermally sprayed piston ring. Thermal sprayed piston rings are an old technology. Initially, Mo thermal spraying was used, but it no longer fully satisfies modern requirements, and although many thermal sprayed materials have recently been developed, they still do not fully meet the requirements. At present, no satisfactory thermal spray material has been developed. Attempts have also been made to effectively combine island thermal spraying materials and surface treatments to obtain excellent piston rings. For example, Jitsukō 46-4564
As shown in the No. ``Piston Rings,'' there are piston rings whose sliding surfaces are thermally sprayed with steel and then sulfurized or nitrided.
しかしながら１このピストンリングは鋼類の溶射でちる
ことから耐摩耗性に劣シ充分満足し得ないものであった
。However, this piston ring was unsatisfactory due to its poor wear resistance as it would break due to the thermal spraying of steel.
本発明は為このような状況に鑑み、近時の要求を充分満
足した優れたピストンリングを提供しようとするもので
ある。In view of this situation, the present invention aims to provide an excellent piston ring that fully satisfies recent demands.
以下１本発明を添付図面に沿って詳細に説明する。The present invention will be described in detail below with reference to the accompanying drawings.
先ず１本発明のピストンリングはへ第１図に示す如く、
ピストンリング１の外周面２に設けられた凹溝３に、多
孔度が５〜２８％のＣｒ−Ｆｅ基合金溶射層４が設けら
れ、との溶射層に窒化１浸硫１浸硫窒化等の硬化熱処理
（以下）単に硬化熱処理と称す）層６の化合物層と拡散
層に設けられたピストンリングである。First, the piston ring of the present invention is as shown in FIG.
A Cr-Fe based alloy sprayed layer 4 with a porosity of 5 to 28% is provided in the groove 3 provided on the outer circumferential surface 2 of the piston ring 1, and the sprayed layer is coated with nitriding, sulfurizing, sulfurizing, nitriding, etc. The hardening heat treatment (hereinafter simply referred to as hardening heat treatment) layer 6 is a compound layer and a diffusion layer of the piston ring.
このように１本発明のピストンリングは外周面にＣｒ−
Ｆｅ基合金溶射層が設けられ更に硬化熱処理が施されて
いるため下記の如く優れた効果を有すや・
即ち５ｃｒＦｅ基合溶射層はＣｒ炭化物等の炭化物を有
するため極めて優れた耐摩耗性を有するのであるが１こ
の炭化物が存在するために相手材であるシリンダ内壁面
を多く摩耗させると言う問題点を有することが判明した
が１本発明はこの点を硬化熱処理層による化合物層と拡
散層に設けることによって解決したものである。In this way, the piston ring of the present invention has Cr-
Since the Fe-based alloy sprayed layer is provided and further hardened by heat treatment, it has excellent effects as shown below.In other words, the 5crFe-based alloy sprayed layer has extremely excellent wear resistance because it contains carbides such as Cr carbide. However, it has been found that the existence of these carbides causes a problem in that the inner wall surface of the cylinder, which is the mating material, is abraded to a large extent.1 The present invention solves this problem by using a compound layer and a diffusion layer formed by a hardening heat treatment layer. This was solved by providing a
この、硬化熱処理を施すに当っての要因に多孔率がある
が、多孔率は５％以下では空孔が単独空孔のものが多く
１そのため硬化熱処理層が深く入シにくく目的とするも
のが得られない。Porosity is a factor in performing this hardening heat treatment, and when the porosity is less than 5%, the pores are often single pores1.As a result, it is difficult for the hardening heat treatment layer to penetrate deeply, making it difficult to achieve the desired result. I can't get it.
一方、２８４以上になると、はとんどの空孔は空孔と空
孔同志が続った連続空孔となっているため、硬化熱処理
層が入シすぎ、粒子の脱落や溶射層の剥離を生ずるため
翫溶射層の多孔率は６％〜２８％の範囲内に設定する必
要がある。On the other hand, when the number is 284 or more, most of the pores are continuous pores, so the hardening heat treatment layer is too thick, causing particles to fall off and the sprayed layer to peel off. Therefore, the porosity of the sprayed layer must be set within the range of 6% to 28%.
このようにして設けられた硬化熱処理層は表層より深く
まで全体を通して溶射粒子の表層には化合物層が形成さ
れその内側には拡散層が形成された溶射層になるために
使用初期にあっては化合物層が早期に初期なじみを与え
１定常摩耗域に入ってからは化合物層翫拡散層が同一摺
動面に併存するために自身の耐摩耗性及び相手材に対す
る攻撃性を少くできる効果を発揮する。The hardened heat-treated layer provided in this way extends deeper than the surface layer, and forms a compound layer on the surface layer of the thermally sprayed particles, and a diffusion layer on the inside of the thermally sprayed layer. The compound layer gives early initial conformity, and after entering the first steady wear region, the compound layer and the diffusion layer coexist on the same sliding surface, which improves its own wear resistance and reduces the aggressiveness of the mating material. do.
また−溶射層特有の空孔は１油保持性に優れた効果を有
するため悪潤滑条件下′でも優れた耐スカツフイング効
果を発揮するものである。In addition, the pores unique to the sprayed layer have an excellent effect on oil retention, and therefore exhibit excellent scuffing resistance even under poor lubrication conditions.
前記したＣｒ−Ｆｅ基合金溶射層は重量％にてＣＱ、０
以下、Ｃｒ５〜ｓｏ４を含むＣｒ−Ｆｅ基合金とするこ
とが望まれる。The above-mentioned Cr-Fe based alloy sprayed layer has a CQ of 0% by weight.
Hereinafter, it is desirable to use a Cr-Fe-based alloy containing Cr5 to so4.
即ち、Ｃを９．０以上有すると粒子間の結合強度が低下
しそのため密着性の低下をきたすことと溶射作業性の低
下をきたすために９．０以下とする必要がある。なお最
も望ましい範囲は２．０〜７．０％の範囲である。That is, if C is 9.0 or more, the bonding strength between the particles decreases, resulting in a decrease in adhesion and a decrease in thermal spraying workability, so it is necessary to make it 9.0 or less. Note that the most desirable range is 2.0 to 7.0%.
Ｃｒは５９６以下では目的とするＣｒ炭化物が少くその
ため要求に充分満足する耐摩耗性が得られず一方８０９
６以上では原料粉末の作成が困難なため量産性を有しな
い。そのためＣｒは５〜８０９６の範囲内に設定する必
要がある。なお為最も望ましい範囲は５０〜７０９６の
範囲である。寿お１この成分の他にＣ０１Ｎｉ、ＭＣｈ
Ｃｕｓ Ｍｎｘ ＳＴｏ Ｖ ｓ Ｗ Ｎ Ｔｉ、Ａ
Ｉ等の１種もしくは２種以上を添加して〜耐摩耗性を向
させてもよい。If Cr is less than 596, the target Cr carbide is small, so wear resistance that fully satisfies the requirements cannot be obtained;
If it is 6 or more, it is difficult to prepare the raw material powder, and therefore mass production is not possible. Therefore, Cr needs to be set within the range of 5 to 8096. The most desirable range is therefore 50-7096. Kotobuki 1 In addition to this ingredient, C01Ni, MCh
Cus Mnx STo V s W N Ti,A
One or more kinds of I, etc. may be added to improve wear resistance.
更に１前記した如く外周面構造を有するピストンリング
の母材を重量％にてＣ０，１６〜１．４０９６ 、Ｏｒ
１１〜１９％を含み基地組織中にＣｒからなる炭化物
が微細に分散したマルテンサイト基地の鋼としたときに
は、熱負荷の高いディーゼルエンジンや腐食摩耗の多い
高鉛ガソリン使用エンジンに用いたときに優れた効果を
有するものであるこのピストンリング母材成分の限定理
由について述べるとＣｉ］：Ｃｒ量とも関係するが炭化
物を形成する元素として不可欠であ、９．０−１６４以
下では炭化物量が少く上下面のたたかれ摩耗が生じ１一
方１．４％以上となると基地が脆化するため高熱負可で
の使用に耐えない。従ってＣは０．１６〜１．４％の範
囲内に設定する必要がある。Furthermore, the base material of the piston ring having the outer peripheral surface structure as described above is C0.16 to 1.4096% by weight, Or
When the martensite base steel contains 11 to 19% Cr and finely dispersed carbides made of Cr in the base structure, it is excellent when used in diesel engines with a high heat load and engines using high lead gasoline that have a lot of corrosive wear. Ci]: Although it is related to the amount of Cr, it is essential as an element that forms carbides, and if it is less than 9.0-164, the amount of carbides is small If the lower surface wears out due to knocking and wear exceeds 1.4%, the base becomes brittle and cannot withstand use in high heat environments. Therefore, C needs to be set within the range of 0.16 to 1.4%.
またｓ Ｃｒは基地強度向上と炭化物形成元素として添
加され蔦１１％以下では炭化物が不足し目的とする耐摩
耗性が得られず−゛方１９９６以上では基地が脆化する
ため使用に耐えない。従ってＣｒ量は１１〜１９９６の
範囲内よυ選択される必要があるこのようなＣ量ＳＣｒ
量を含み鴬基地組織中にＣｒからな石炭化物が微細に分
散されたマルテンサイト基地の鋼としたときには母材の
持つ高波労強度及び耐摩耗性が発揮され優れた効果を奏
するものである。Further, sCr is added to improve base strength and as a carbide-forming element.If the content is less than 11%, the carbide is insufficient and the desired wear resistance cannot be obtained, whereas if it is more than 1996%, the base becomes brittle and cannot be used. Therefore, the Cr content must be selected within the range of 11 to 1996.
When the martensitic base steel is made of martensitic base steel in which carbides such as Cr are finely dispersed in the base structure, the high wave strength and wear resistance of the base material are exhibited, and excellent effects are achieved.
更に１前述した本願ピストンリングは特に高熱負荷条件
下において優れた性能を発揮するために丸本願ピストン
リングは第１圧縮ピストンリングに使用した時には特に
優れた効果を発揮するものまた、本願ピストンリングを
第１圧縮ピストンリングに使用した場合に第２圧縮リン
グは通常使用されているテーバリング島アンダーカット
リング等公知のリングを使用して優れた効果を奏するも
のであるが、圧縮リングとオイルリングとの組合せを考
えた時には為オイルリングは下記のものが最も良好な性
能を得た。Furthermore, 1. The aforementioned piston ring of the present invention exhibits excellent performance especially under high heat load conditions, and the piston ring of the present invention exhibits particularly excellent effects when used as the first compression piston ring. When used for the first compression piston ring, the second compression ring uses a known ring such as the commonly used Taber ring island undercut ring, which produces excellent effects, but the combination of the compression ring and the oil ring When considering the combinations, we found that the following oil rings had the best performance.
即ち、オイルリングはスペーサーエキスパンダとサイト
レールからなる組合せオイルリングとなしこのサイトレ
ールを前記した圧縮ピストンリング母材（重量％にてｃ
ｏ、１ｇ７−１．４４、Ｃｒ１１〜１９９６を含み基
地組織中にＣｒからなる炭化物が微細に分散したマルテ
ンサイト基地の鋼）と同一母材から製作したサイトレー
ルとなし１このサイトレールの外表面に何ら表面処理を
施さないサイトレールである。このオイルリングが良好
なのは母材自身が極めて優れた耐熱耐摩耗性を有するか
らと考えられる。なお１使用条件が特に苛酷な場合は軟
窒化処理を施し使用するとよい。That is, the oil ring is a combination oil ring consisting of a spacer expander and a sight rail, and this sight rail is combined with the above-described compression piston ring base material (c
o, 1g7-1.44, martensitic base steel containing Cr11-1996 and finely dispersed carbides made of Cr in the base structure) and a sight rail manufactured from the same base material as 1. The outer surface of this sight rail. This is a sight rail that does not undergo any surface treatment. The reason why this oil ring is so good is thought to be that the base material itself has extremely excellent heat and wear resistance. Note that if the usage conditions are particularly severe, it is preferable to perform nitrocarburizing treatment before use.
このように１本発明ピストンリングはＣｒ−Ｆｅ基合金
溶射そのものでは自身の耐摩耗性は優れているが相手材
であるシリンダ内壁を多く摩耗させる問題を硬化熱処理
を特定条件下に於て施すことによって、解決したもので
アシ、その奏する効果は大きい。In this way, the piston ring of the present invention has excellent wear resistance when sprayed with a Cr-Fe base alloy itself, but the problem of causing a lot of wear on the inner wall of the cylinder, which is the mating material, can be solved by applying hardening heat treatment under specific conditions. The problem was resolved by this method, and the effect it produced was great.
第１図は本願ピストンリングの一実施例を示す縦断面図
を示す。
何分の説明
１：ピストンリング ２：外周面
３：凹溝 ４：Ｃｒ−Ｆｅ基合金５：硬
化熱処理層 溶射層
特許出願人
日本ピストンリング株式会社
第１図FIG. 1 shows a longitudinal sectional view showing an embodiment of the piston ring of the present invention. 1: Piston ring 2: Outer surface 3: Concave groove 4: Cr-Fe based alloy 5: Hardened heat treated layer Thermal sprayed layer Patent applicant Nippon Piston Ring Co., Ltd. Figure 1
Claims (5)
８９６のＣｒ−Ｆｅ基合金溶射層を設け、更に島該溶射
層に化合物層と拡散層を有する硬化熱処理層が施された
ことを特徴とするピストンリング。(1) The porosity is 5 to 2 on the outer circumferential surface of the piston ring.
A piston ring characterized in that a Cr--Fe based alloy thermally sprayed layer of No. 896 is provided, and a hardening heat-treated layer having a compound layer and a diffusion layer is further applied to the thermally sprayed layer.
９゜０９６以下、Ｃｒ５〜ｓｏ４を含むＣｒ−Ｆ’ｅ基
合金であることを特徴とする特許請求の範囲第１項記載
のピストンリング。(2) The Cr-F'e-based alloy sprayed layer contains C by weight%
9. The piston ring according to claim 1, wherein the piston ring is a Cr-F'e-based alloy containing Cr5 to SO4.
１１６〜１．４０％、Ｃｒ１ｌ〜１９％を含み基地組織
中にＣｒからなる炭化物が微細に分散した了ルチンサイ
ト基地の鋼であることを特徴とする特許請求の範囲第１
項記載のピストンリング。(3) The above-mentioned piston ring base material is CO0 at 1% by weight.
116-1.40% of Cr, 11-19% of Cr, and is a rutinsite-based steel in which carbides made of Cr are finely dispersed in the matrix structure.
Piston ring as described in section.
用いたことを特徴とする特許請求の範囲第１項記載のピ
ストンリング。(4) The piston ring according to claim 1, wherein the piston ring is used as a first compression piston ring.
用のピストンリングとして用いたことを特徴とする前記
第１項記載のピストンリング。(5) The piston ring according to item 1 above, wherein the piston ring is used as a piston ring for an engine using high lead gasoline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12526181A JPS5827862A (en) | 1981-08-12 | 1981-08-12 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12526181A JPS5827862A (en) | 1981-08-12 | 1981-08-12 | Piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5827862A true JPS5827862A (en) | 1983-02-18 |
Family
ID=14905702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12526181A Pending JPS5827862A (en) | 1981-08-12 | 1981-08-12 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827862A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157875A (en) * | 1984-12-28 | 1986-07-17 | Teikoku Piston Ring Co Ltd | Combination of cylinder and seal ring |
| US5695825A (en) * | 1995-05-31 | 1997-12-09 | Amorphous Technologies International | Titanium-containing ferrous hard-facing material source and method for hard facing a substrate |
| EP0691417A3 (en) * | 1994-06-06 | 1998-06-03 | Toyota Jidosha Kabushiki Kaisha | Method of spraying material, method of manufacturing sliding member having sliding surface which comprises sprayed layer; piston and method of manufacturing the same |
| US6726216B2 (en) * | 2001-06-01 | 2004-04-27 | Federal-Mogul Friedberg Gmbh | Piston ring with oxide-nitride composite layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52102916A (en) * | 1976-02-25 | 1977-08-29 | Nippon Piston Ring Co Ltd | Piston ring |
| JPS52102917A (en) * | 1976-02-25 | 1977-08-29 | Nippon Piston Ring Co Ltd | Piston ring |
| JPS54126854A (en) * | 1978-03-24 | 1979-10-02 | Toyota Motor Corp | Piston ring |
| JPS5528379A (en) * | 1978-08-23 | 1980-02-28 | Nippon Piston Ring Co Ltd | Wear resistant sliding material for internal combustion engine |
| JPS5569742A (en) * | 1978-11-20 | 1980-05-26 | Toyota Motor Corp | Piston ring for internal combustion engine |
| JPS5613525B2 (en) * | 1978-09-22 | 1981-03-28 | ||
| JPS5651564A (en) * | 1979-10-02 | 1981-05-09 | Toyota Motor Corp | Sliding member |
-
1981
- 1981-08-12 JP JP12526181A patent/JPS5827862A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52102916A (en) * | 1976-02-25 | 1977-08-29 | Nippon Piston Ring Co Ltd | Piston ring |
| JPS52102917A (en) * | 1976-02-25 | 1977-08-29 | Nippon Piston Ring Co Ltd | Piston ring |
| JPS54126854A (en) * | 1978-03-24 | 1979-10-02 | Toyota Motor Corp | Piston ring |
| JPS5528379A (en) * | 1978-08-23 | 1980-02-28 | Nippon Piston Ring Co Ltd | Wear resistant sliding material for internal combustion engine |
| JPS5613525B2 (en) * | 1978-09-22 | 1981-03-28 | ||
| JPS5569742A (en) * | 1978-11-20 | 1980-05-26 | Toyota Motor Corp | Piston ring for internal combustion engine |
| JPS5651564A (en) * | 1979-10-02 | 1981-05-09 | Toyota Motor Corp | Sliding member |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61157875A (en) * | 1984-12-28 | 1986-07-17 | Teikoku Piston Ring Co Ltd | Combination of cylinder and seal ring |
| EP0691417A3 (en) * | 1994-06-06 | 1998-06-03 | Toyota Jidosha Kabushiki Kaisha | Method of spraying material, method of manufacturing sliding member having sliding surface which comprises sprayed layer; piston and method of manufacturing the same |
| US5695825A (en) * | 1995-05-31 | 1997-12-09 | Amorphous Technologies International | Titanium-containing ferrous hard-facing material source and method for hard facing a substrate |
| US6726216B2 (en) * | 2001-06-01 | 2004-04-27 | Federal-Mogul Friedberg Gmbh | Piston ring with oxide-nitride composite layer |
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