JPS62188856A - Piston ring - Google Patents
Piston ringInfo
- Publication number
- JPS62188856A JPS62188856A JP2777286A JP2777286A JPS62188856A JP S62188856 A JPS62188856 A JP S62188856A JP 2777286 A JP2777286 A JP 2777286A JP 2777286 A JP2777286 A JP 2777286A JP S62188856 A JPS62188856 A JP S62188856A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- base material
- piston ring
- chromium
- large amount
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 23
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 15
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 239000011651 chromium Substances 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 19
- 239000002184 metal Substances 0.000 abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 17
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 13
- 230000008020 evaporation Effects 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 150000004767 nitrides Chemical class 0.000 abstract description 3
- 238000010894 electron beam technology Methods 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000005422 blasting Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の属する技術分野）
この発明は、耐摩耗性、耐焼付性に優れた皮膜を有する
ピストンリングに関する。DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) This invention relates to a piston ring having a coating with excellent wear resistance and seizure resistance.
（従来技術と問題点）
、 耐摩耗性に優れ、且つ相手シリンダ材の摩耗の少な
い硬質クロムめっきが、ピストンリングの表面処理方法
として従来から多く使われている。しかし、近年エンジ
ンの高出力化や高性能化に伴い、ピストンリングに要求
される条件はますます過酷なものとなり、従来の硬質ク
ロムめっきでは対応できない場合があり、更に優れた耐
摩耗性、耐焼付性を有するピストンリングが望まれてい
た。(Prior Art and Problems) Hard chrome plating, which has excellent wear resistance and causes less wear on the mating cylinder material, has been widely used as a surface treatment method for piston rings. However, in recent years, with the increase in engine output and performance, the conditions required for piston rings have become increasingly severe, and conventional hard chrome plating may not be able to meet the requirements. A piston ring with seizure resistance has been desired.
このような要求に対して、イオンブレーティング法によ
り、摺動面に金属窒化物や金属炭化物などの皮膜を形成
したピストンリングが提案されている。なかでも、窒化
クロムは皮膜の生成速度が早く、厚い皮膜が短時間で得
られるため最近、特に注目されはじめている。しかし、
窒化クロムの皮膜は、それ自体が硬質であるため柔軟性
に欠け、運転中に剥離を生ずる恐れがあるなどの問題点
がある。In response to such demands, piston rings have been proposed in which a coating of metal nitride, metal carbide, or the like is formed on the sliding surface by the ion blating method. Among these, chromium nitride has recently begun to attract particular attention because it forms a film at a fast rate and thick films can be obtained in a short time. but,
Since the chromium nitride film itself is hard, it lacks flexibility and has problems such as the risk of peeling during operation.
（問題点を解決するための手段）
この発明は、ピストンリングの外周摺動面に、金属クロ
ムと窒化クロムからなる複合皮膜が形成されていて、該
複合皮膜がピストンリング母材から複合皮膜表面へ向か
って、窒化クロムの比率かに増大していることを特徴と
したピストンリングを提供することで上記のような問題
点を解決している。(Means for Solving the Problems) This invention has a composite film made of metallic chromium and chromium nitride formed on the outer peripheral sliding surface of a piston ring, and the composite film is transferred from the piston ring base material to the composite film surface. The above-mentioned problems have been solved by providing a piston ring characterized by a significantly increased proportion of chromium nitride.
（作用）
本発明の窒化クロム層は、窒素ガスの存在する減圧雰囲
気中で、クロムを蒸発材として、反応性イオンブレーテ
ィング法によって得ることができる。窒素ガス雰囲気中
でこのようなイオンブレーティングを行うと、クロムの
ガスは窒素と反応して、窒化クロムとなる。(Function) The chromium nitride layer of the present invention can be obtained by a reactive ion blasting method using chromium as an evaporator in a reduced pressure atmosphere in the presence of nitrogen gas. When such ion blating is performed in a nitrogen gas atmosphere, chromium gas reacts with nitrogen to become chromium nitride.
真空容器内に窒素ガスを導入する前に、イオンブレーテ
ィングを行うと、ピストンリング母材に金属クロムの下
地層が形成される。この下地層は、熱膨張率がビス１−
ンリング母材に近く、熱応力の影響を受けにくいため、
密着性は良く、しかも柔軟性にも富む。下地層が所定の
厚さになったところで徐々に窒素ガスを導入してイオン
ブレーティングを続けると、蒸発したクロムの一部は窒
化クロムに転換する。第１表に、母材温度を４００℃と
し、種々の窒素ガス分圧でイオンブレーティングを行っ
たとき、形成される皮膜の組織と硬度の関係を示した。When ion blasting is performed before introducing nitrogen gas into the vacuum chamber, a base layer of metallic chromium is formed on the piston ring base material. This base layer has a coefficient of thermal expansion of 1-
Because it is close to the ring base material and is less affected by thermal stress,
It has good adhesion and is also highly flexible. When the underlayer reaches a predetermined thickness, nitrogen gas is gradually introduced and ion blasting is continued, and a portion of the evaporated chromium is converted to chromium nitride. Table 1 shows the relationship between the structure and hardness of the film formed when ion blasting was performed at a base material temperature of 400° C. and various nitrogen gas partial pressures.
窒素ガスの分圧が低いときは転換の割合は少なく、窒素
ガス分圧が次第に高くなるにつれて、金属クロムが消失
し、単体の窒化クロムとなり、硬度も大きくなることが
わかる。It can be seen that when the partial pressure of nitrogen gas is low, the conversion rate is small, and as the partial pressure of nitrogen gas gradually increases, metallic chromium disappears and becomes chromium nitride, which increases the hardness.
（実施例）
本発明に使用したＨＣＤ型イオンブレーティング装置の
概要を第２図に示す。(Example) FIG. 2 shows an outline of the HCD type ion brating device used in the present invention.
母材１を母材保持具２で保持し、ヒーター３で母材１を
所定の温度に加熱する。母材１は図示しないモーターに
より回転する。母材１の下方には、蒸発源の金属５を収
容する水冷銅ルツボ６が設置しである。真空容器４の側
壁には、窒素ガス供給口１０とＨＣＤ型電子銃８が取り
付けてあり、電子銃８には、プラズマ用アルゴンガスの
導入管９が設けである。水冷銅ルツボ６と電子銃８の間
には、集束コイル７があって、電子銃８から射出された
電子ビームを集束して蒸発源の金属５に照射する。真空
容器４内は、図示しない真空ポンプにより減圧されるよ
うになっている。A base material 1 is held by a base material holder 2, and a heater 3 heats the base material 1 to a predetermined temperature. The base material 1 is rotated by a motor (not shown). A water-cooled copper crucible 6 containing metal 5 as an evaporation source is installed below the base material 1. A nitrogen gas supply port 10 and an HCD type electron gun 8 are attached to the side wall of the vacuum container 4, and the electron gun 8 is provided with an introduction tube 9 for plasma argon gas. A focusing coil 7 is provided between the water-cooled copper crucible 6 and the electron gun 8, and the electron beam emitted from the electron gun 8 is focused and irradiated onto the metal 5 as the evaporation source. The pressure inside the vacuum container 4 is reduced by a vacuum pump (not shown).
真空容器４内にアルゴンガスを導入し１×１０−”ｔｏ
ｒｒ程度に減圧してボンバードにより、母材１の表面の
クリーニングを行う。Argon gas was introduced into the vacuum container 4 to
The surface of the base material 1 is cleaned by bombardment under reduced pressure to about rr.
つぎに、３Ｘ１０−”ｔｏｒｒ程度に減圧した後、ＨＣ
Ｄ型電子銃８により蒸発源の金属５を加熱し、蒸発させ
る。この下地層が所定の厚さになったところで、真空容
器４内に窒素ガスを徐々に導入する。蒸発した金属５は
容器内の窒素と反応して、母材１に金属窒化物の皮膜を
形成する。Next, after reducing the pressure to about 3×10-”torr, HC
The metal 5 serving as the evaporation source is heated by the D-type electron gun 8 and evaporated. When this base layer reaches a predetermined thickness, nitrogen gas is gradually introduced into the vacuum container 4. The evaporated metal 5 reacts with nitrogen in the container to form a metal nitride film on the base material 1.
呼び径ｘ幅×厚さが、φ８６ ｍ Ｘ ２ Ｘ ３の５
ＫＤ−６１材のピストンリングを複数本重ねて母材１と
して、以下の条件で反応性イオンブレーティングを実施
した。Nominal diameter x width x thickness is φ86 m x 2 x 3 5
A plurality of piston rings made of KD-61 material were stacked to form the base material 1, and reactive ion blating was performed under the following conditions.
母材温度： ４００℃
ビーム出カニ ３０Ｖ−３０ＯＡ収束電流：
１５０Ａ
窒素ガス分圧： ０−３Ｘ１０−３ｔｏｒｒ蒸発源
： 金属クロム
処理時間； ６０分
この処理により、ピストンリングの外周摺動面に、金属
クロムと窒化クロムからなる厚さが４０μｍの複合皮膜
が得られた。Base material temperature: 400℃ Beam output crab 30V-30OA convergence current:
150A Nitrogen gas partial pressure: 0-3X10-3 torr Evaporation source: Metal chromium treatment time: 60 minutes Through this treatment, a 40 μm thick composite film made of metal chromium and chromium nitride was obtained on the outer peripheral sliding surface of the piston ring. It was done.
（効 果）
本発明によるピストンリングは、ピストンリングの母材
に近い部分に金属クロムを多くして、母材との密着性を
高め、摺動面部分には、硬度の高い窒化クロムを多くし
て耐摩耗性、耐焼付性を向上させている。このように、
硬質の窒化クロム層が、密着性、柔軟性に富む下地層か
ら連続的に形成されているため、金属クロムと窒化クロ
ムの境界部分で剥離することもない。本発明のピストン
リングは、耐摩耗性、耐焼付性にすぐれたピストンリン
グとして、エンジンの耐久性を向上させるうえで顕著な
効果を示す。(Effects) The piston ring according to the present invention has a large amount of metallic chromium in the part near the base material of the piston ring to improve adhesion with the base material, and a large amount of highly hard chromium nitride on the sliding surface part. This improves wear resistance and seizure resistance. in this way,
Since the hard chromium nitride layer is continuously formed from the highly adhesive and flexible base layer, there is no possibility of peeling off at the boundary between metal chromium and chromium nitride. The piston ring of the present invention exhibits a remarkable effect in improving the durability of an engine as a piston ring with excellent wear resistance and seizure resistance.
第１図に５本発明のピストンリングを示す。
図中 １・・・ピストンリング
２・・・複合皮膜層
第２図に、本発明の実施例のＨＣＤ型イオンブレーティ
ング装置の概要を示す。
図中 １・・・母材（ピストンリング）２・・・母材保
持具
３・・・ヒーター
４・・・真空容器
５・・・蒸発源の金属
６・・・水冷銅ルツボ
７・・収束コイル
８・・・電子銃
９・・・アルゴンガス導入口
１０・・・窒素ガス導入口FIG. 1 shows five piston rings of the present invention. In the figure: 1... Piston ring 2... Composite film layer FIG. 2 shows an outline of an HCD type ion brating device according to an embodiment of the present invention. In the figure 1...Base metal (piston ring) 2...Base metal holder 3...Heater 4...Vacuum container 5...Evaporation source metal 6...Water-cooled copper crucible 7...Convergence Coil 8...Electron gun 9...Argon gas inlet 10...Nitrogen gas inlet
Claims (1)
と窒化クロムからなる複合皮膜が形成されていて、該複
合皮膜が、ピストンリング母材表面から複合皮膜表面へ
向かって、窒化クロムの比率が連続的に増大しているこ
とを特徴とするピストンリングA composite film made of metallic chromium and chromium nitride is formed on at least the outer peripheral sliding surface of the piston ring, and the ratio of chromium nitride is continuous from the piston ring base material surface to the composite film surface. A piston ring characterized by an increase in
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2777286A JPS62188856A (en) | 1986-02-13 | 1986-02-13 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2777286A JPS62188856A (en) | 1986-02-13 | 1986-02-13 | Piston ring |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6189045A Division JP2681875B2 (en) | 1994-07-20 | 1994-07-20 | piston ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62188856A true JPS62188856A (en) | 1987-08-18 |
| JPH0561502B2 JPH0561502B2 (en) | 1993-09-06 |
Family
ID=12230267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2777286A Granted JPS62188856A (en) | 1986-02-13 | 1986-02-13 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62188856A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290785A (en) * | 1988-05-16 | 1989-11-22 | Kobe Steel Ltd | Wear resistant composite member having high lubricity |
| JPH02159478A (en) * | 1988-12-13 | 1990-06-19 | Teikoku Piston Ring Co Ltd | Piston ring |
| JPH04368A (en) * | 1990-04-17 | 1992-01-06 | Riken Corp | Wear resistant coating film and production thereof |
| JPH07167300A (en) * | 1994-07-20 | 1995-07-04 | Riken Corp | Piston ring |
| US5469616A (en) * | 1990-11-15 | 1995-11-28 | Teikoku Piston Ring Co., Ltd. | Method of manufacturing a side rail of a combined oil ring |
| US5605741A (en) * | 1995-06-02 | 1997-02-25 | Dana Corporation | Hybrid face coating for piston ring |
| JPH0987830A (en) * | 1995-09-28 | 1997-03-31 | Nippon Piston Ring Co Ltd | Sliding member for compressor |
| US6161837A (en) * | 1998-05-14 | 2000-12-19 | Detroit Diesel Corporation | Piston ring with hybrid face coating |
| JP2008505251A (en) * | 2004-07-03 | 2008-02-21 | フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method and piston ring for producing a coating layer on a piston ring |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4877502B2 (en) * | 1997-11-06 | 2012-02-15 | Ｄｏｗａサーモテック株式会社 | Nitrogen-containing Cr coating and mechanical member having this coating |
-
1986
- 1986-02-13 JP JP2777286A patent/JPS62188856A/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290785A (en) * | 1988-05-16 | 1989-11-22 | Kobe Steel Ltd | Wear resistant composite member having high lubricity |
| JPH02159478A (en) * | 1988-12-13 | 1990-06-19 | Teikoku Piston Ring Co Ltd | Piston ring |
| JPH04368A (en) * | 1990-04-17 | 1992-01-06 | Riken Corp | Wear resistant coating film and production thereof |
| US5469616A (en) * | 1990-11-15 | 1995-11-28 | Teikoku Piston Ring Co., Ltd. | Method of manufacturing a side rail of a combined oil ring |
| JPH07167300A (en) * | 1994-07-20 | 1995-07-04 | Riken Corp | Piston ring |
| JP2681875B2 (en) * | 1994-07-20 | 1997-11-26 | 株式会社リケン | piston ring |
| US5605741A (en) * | 1995-06-02 | 1997-02-25 | Dana Corporation | Hybrid face coating for piston ring |
| JPH0987830A (en) * | 1995-09-28 | 1997-03-31 | Nippon Piston Ring Co Ltd | Sliding member for compressor |
| US6161837A (en) * | 1998-05-14 | 2000-12-19 | Detroit Diesel Corporation | Piston ring with hybrid face coating |
| JP2008505251A (en) * | 2004-07-03 | 2008-02-21 | フェデラル−モーグル ブルシャイト ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method and piston ring for producing a coating layer on a piston ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0561502B2 (en) | 1993-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |