JPS62282150A - Combination of piston-ring and cylinder - Google Patents
Combination of piston-ring and cylinderInfo
- Publication number
- JPS62282150A JPS62282150A JP12466886A JP12466886A JPS62282150A JP S62282150 A JPS62282150 A JP S62282150A JP 12466886 A JP12466886 A JP 12466886A JP 12466886 A JP12466886 A JP 12466886A JP S62282150 A JPS62282150 A JP S62282150A
- Authority
- JP
- Japan
- Prior art keywords
- nickel
- phosphorus
- cylinder
- dispersed
- silicon nitride
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000007747 plating Methods 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 14
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 229910018125 Al-Si Inorganic materials 0.000 claims abstract description 6
- 229910018520 Al—Si Inorganic materials 0.000 claims abstract description 6
- 229910001096 P alloy Inorganic materials 0.000 claims abstract description 6
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 11
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 claims 2
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 9
- 229910010271 silicon carbide Inorganic materials 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- IGOJDKCIHXGPTI-UHFFFAOYSA-N [P].[Co].[Ni] Chemical compound [P].[Co].[Ni] IGOJDKCIHXGPTI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- SIBIBHIFKSKVRR-UHFFFAOYSA-N phosphanylidynecobalt Chemical compound [Co]#P SIBIBHIFKSKVRR-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/04—Phosphor
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（発明の技術分野）
本発明は、耐摩耗性に優れた複合めっき層を摺動面に有
する内燃機関用ピストンリングとＡｌ−Ｓｉ製シリンダ
の組合せ技術に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (Technical Field of the Invention) The present invention provides a piston ring for an internal combustion engine and an Al-Si cylinder having a composite plating layer with excellent wear resistance on the sliding surface. Regarding combination technology.
（従来技術と問題点）
近年、内燃機関の軽量化に伴い、過共晶Ａｌ−５ｉ合金
、あるいは亜共晶Ａｌ−５ｉ合金製シリンダが一部で実
用化されている。このＡ ｌ −Ｓ ｉ合金製シリンダ
は良好な耐摩耗性を示すものの。(Prior Art and Problems) In recent years, with the reduction in weight of internal combustion engines, cylinders made of hypereutectic Al-5i alloy or hypoeutectic Al-5i alloy have been put into practical use in some cases. Although this Al-Si alloy cylinder exhibits good wear resistance.
鋳鉄製シリンダにくらにでやや劣る。従来、この種のシ
リンダに組合せて使用するピストンリングとしては、摺
動面に炭化珪素を分散させたニッケル複合めっき、ある
いは炭化珪素を分散させた鉄複合めっきが施されたもの
が提案されている。この炭化珪素などの硬質粒子を分散
させることによって、硬質粒子による第一摺動面と、基
地部による第二摺動面との間の保油作用により、耐摩耗
性が改善される。Slightly inferior to cast iron cylinders. Conventionally, piston rings used in combination with this type of cylinder have been proposed with nickel composite plating with silicon carbide dispersed on the sliding surface or iron composite plating with silicon carbide dispersed. . By dispersing hard particles such as silicon carbide, the wear resistance is improved due to the oil retaining effect between the first sliding surface due to the hard particles and the second sliding surface due to the base portion.
しかし、炭化珪素を分散させたニッケルあるいは鉄複合
めっきは、分散材の炭化珪素粒子が硬質で、結晶の端部
が鋭利のため、相手シリンダ材を摩耗させやすい。また
、複合めっき層の基地がニッケルあるいは鉄だけでは硬
度が不足しているため、逆に、シリンダ材の初晶シリコ
ンにより摩耗を受は易い。また、一般にピストンリング
の表面処理に多く使用されている硬質クロムめっきは、
潤滑油に対する濡れ性が悪いため保油効果が少なく、焼
き付きが起きやすい。このように、従来のめっきを施し
たピストンリングとＡｌ−５ｉシリンダの組合せでは、
加鉛ガソリンを使用したり、過酷な運転条件では、ピス
トンリングあるいはシリンダが異常度を起すことがあっ
た。However, in nickel or iron composite plating in which silicon carbide is dispersed, the silicon carbide particles of the dispersed material are hard and the edges of the crystals are sharp, so that the mating cylinder material is likely to wear out. Furthermore, if the base of the composite plating layer is only nickel or iron, the hardness is insufficient, and conversely, the primary crystal silicon of the cylinder material is susceptible to wear. In addition, hard chrome plating, which is commonly used for surface treatment of piston rings,
Due to its poor wettability with lubricating oil, it has little oil retention effect and is prone to seizing. In this way, the combination of a conventionally plated piston ring and an Al-5i cylinder,
When leaded gasoline is used or under harsh operating conditions, piston rings or cylinders may become abnormal.
（発明の構成）
本発明は、上記目的を達成するため、第１の発明として
、燐が０．２〜１０重量％、残りがニッケルからなるニ
ッケル−燐合金めっきの基地層中に、平均粒径０．５〜
１０μｍの窒化珪素を容積比で５〜３０％の範囲で分散
している複合皮膜層を摺動面に有するピストンリングと
、過共晶Ａ１−５ｉ製シリンダとの組合せを提供し、第
２の発明として、燐が０．２〜１０重量％、コバルトが
１０〜４０重量％、残りがニッケルからなるニッケル−
コバルト−燐合金めっきの基地層中に、平均粒径０．５
〜１０μｍの窒化珪素を容積比で５〜３０％の範囲で分
散している複合皮膜層を摺動面に有するピストンリング
と、過共晶Ａｌ−Ｓｉ堰シリンダとの組合せを提供する
ことで上記問題点を解決している。(Structure of the Invention) In order to achieve the above object, the present invention provides, as a first invention, a base layer of a nickel-phosphorus alloy plating containing 0.2 to 10% by weight of phosphorus and the remainder being nickel. Diameter 0.5~
Provided is a combination of a piston ring having a composite film layer on the sliding surface in which 10 μm silicon nitride is dispersed in a range of 5 to 30% by volume, and a cylinder made of hypereutectic A1-5i, and a second As an invention, a nickel-based material consisting of 0.2 to 10% by weight of phosphorus, 10 to 40% by weight of cobalt, and the balance of nickel.
In the base layer of cobalt-phosphorus alloy plating, an average grain size of 0.5
By providing a combination of a piston ring having a composite film layer on the sliding surface in which silicon nitride of ~10 μm is dispersed in a range of 5 to 30% by volume, and a hypereutectic Al-Si weir cylinder, the above can be achieved. It solves the problem.
以下に複合皮膜層について述べる。The composite film layer will be described below.
合金基地中に含まれる燐は、熱硬化処理を行なうと硬度
が高くなって耐摩耗性に優れた効果を示し、また基地の
耐食性改善にも効果がある。When the phosphorus contained in the alloy base is subjected to thermosetting treatment, its hardness increases and it exhibits an excellent effect on wear resistance, and is also effective in improving the corrosion resistance of the base.
燐の量が０．２％以下では熱硬化処理をおこなっても硬
度が高くならず耐摩耗性の効果は少ない６また１０％を
越えると硬度は増すが皮膜はかえって脆くなり、７１１
８強度は弱くなり、ピストンリング母材との密着性も悪
くなる。したがって燐の量は０．２〜１０％が良い。If the amount of phosphorus is less than 0.2%, the hardness will not increase even if heat-curing treatment is performed, and the wear resistance effect will be low6.If the amount exceeds 10%, the hardness will increase but the film will become brittle, and 711
8 The strength becomes weaker and the adhesion with the piston ring base material becomes worse. Therefore, the amount of phosphorus is preferably 0.2 to 10%.
皮膜に分散している窒化珪素粒子は、燐とともに皮膜の
耐摩耗性改善に優れた効果を示す。そして、炭化珪素粒
子にくらへて結晶が鋭利でないため、相手シリンダ材を
摩耗させにくい。さらに、窒化珪素粒子は、セラミック
の中でも金属との濡れ性が悪く金属と溶融状態になりに
くいため、炭化珪素粒子などに比べて耐久ヵノフ性も良
くなる。The silicon nitride particles dispersed in the film, together with phosphorus, have an excellent effect on improving the wear resistance of the film. Further, since the crystals are not sharp due to the silicon carbide particles, it is difficult to wear out the mating cylinder material. Furthermore, silicon nitride particles have poor wettability with metals among ceramics and are difficult to melt with metals, so they have better durability than silicon carbide particles.
窒化珪素の容量は０．５〜３０％で且つその平均粒径は
０．５〜１１０１Ｌが良い。容量が０．５％以下或いは
粒径が０．５μｍ以下では基地表面に占める窒化珪素の
面積が少なく、耐摩耗性としての効果が少ない。また容
量が３０％或いは粒径が１０μｍを越えると相手材の摩
耗を大きくすることになり、さらに皮膜の強度も低下す
る。The capacity of silicon nitride is preferably 0.5 to 30%, and the average particle size is preferably 0.5 to 1101L. If the capacity is 0.5% or less or the particle size is 0.5 μm or less, the area occupied by silicon nitride on the base surface is small and the wear resistance effect is low. Moreover, if the capacity exceeds 30% or the particle size exceeds 10 μm, the wear of the mating material will increase, and the strength of the coating will also decrease.
本発明は、第２の発明として合金基地中にコバルトを添
加している。コバルトは合金基地の耐熱性、耐蝕性を改
善するとともに、皮膜の圧壊疲労強度も向上させる。合
金基地中のコバルトの量は、１０重量％以下では上記の
効果が顕著に得られず、また４０重量％を越えてもその
効果に著しい変化はない。したがって、コバルトの量は
１０〜４０重景％が良い。In the present invention, cobalt is added to the alloy base as the second invention. Cobalt improves the heat resistance and corrosion resistance of the alloy base, as well as the crush fatigue strength of the coating. If the amount of cobalt in the alloy matrix is less than 10% by weight, the above effects cannot be obtained significantly, and even if it exceeds 40% by weight, there is no significant change in the effect. Therefore, the amount of cobalt is preferably 10 to 40%.
（実施例１）
呼び径Ｘ幅×厚さが７８薗Ｘ１．５ｎｎ＋Ｘ３．２ｏｎ
の鋼製第一圧力リングに、まず第一工程として・、摺動
面に通例のニッケルストライクめっき方法で５厚さ１０
μｍのニッケルめっきを形成した。次に第二工程として
、リングの摺動面に表１の浴組成およびめっき条件で、
窒化珪素を分散した厚さ１２０μｍのニッケル−燐複合
めっきを形成した。(Example 1) Nominal diameter x width x thickness is 78 mm x 1.5 nn + x 3.2 on
As a first step, the sliding surface of the steel first pressure ring is coated with a nickel strike plating method to a thickness of 10 mm.
A nickel plating with a thickness of μm was formed. Next, as a second step, the sliding surface of the ring is coated with the bath composition and plating conditions shown in Table 1.
A 120 μm thick nickel-phosphorus composite plating in which silicon nitride was dispersed was formed.
複合めっき層中の燐の量は重量比で５％、窒化珪素の量
は容積比で２５％であった。The amount of phosphorus in the composite plating layer was 5% by weight, and the amount of silicon nitride was 25% by volume.
第三工程として、ピストンリンクを４ｏ○℃で１時間加
熱して熱硬化処理を行ない、基地を硬化させた。この処
理によってマイクロピッカス硬度は８００〜９００とな
った。As a third step, the piston link was heated at 4°C for 1 hour to perform a thermosetting treatment to harden the base. This treatment resulted in a micropicchus hardness of 800 to 900.
（実施例２）
第２の発明の実施例として、実施例１と同様に、呼び径
Ｘ幅Ｘ厚さが７８ｆｆｆ＋＋ Ｘ １．５ｍｍ Ｘ３
．２ｍの鋼製第一圧力リングに、ニッケルストライクめ
っきを形成したのち、第二工程として、リングの摺動面
に表２の浴組成およびめっき条件で。(Example 2) As an example of the second invention, as in Example 1, the nominal diameter x width x thickness is 78fff++ x 1.5 mm x 3
．． After forming nickel strike plating on the 2 m long steel first pressure ring, as a second step, the sliding surface of the ring was coated with the bath composition and plating conditions shown in Table 2.
窒化珪素を分散した厚さ１１０μｍのニッケル−コバル
ト−燐複合めっきを形成した。A 110 μm thick nickel-cobalt-phosphorus composite plating in which silicon nitride was dispersed was formed.
【表２１
複合めっき層中の燐の量は重量比で５％、コバルトの量
は重量比で３５％、窒化珪素の量は容積比で１５％であ
った。[Table 21] The amount of phosphorus in the composite plating layer was 5% by weight, the amount of cobalt was 35% by weight, and the amount of silicon nitride was 15% by volume.
第三工程として、ピストンリングを４００℃で１時間加
熱して、基地を硬化させた。この処理によってマイクロ
ピッカス硬度は８００〜９００となった。As a third step, the piston ring was heated at 400° C. for 1 hour to harden the base. This treatment resulted in a micropicchus hardness of 800 to 900.
（実機試験）
実施例１、および実施例２で得られたピストンリングを
シリンダボア径７８ｎｖｎ、４サイクル、水冷４気筒エ
ンジンに取り付けて、高鉛ガソリンを燃料として６８０
０ｒｐｍ、全負荷、１００時間のベンチテストを行い、
ピストンリングの外周摺動面及びアルミ合金シリンダ（
Ａ ３９０合金製）内周面の摩耗量を測定した。(Actual Machine Test) The piston rings obtained in Example 1 and Example 2 were installed in a 4-stroke, water-cooled, 4-cylinder engine with a cylinder bore diameter of 78 NVN, and a 680 liter engine was heated using high lead gasoline as fuel.
Bench tested for 100 hours at 0 rpm, full load,
The outer circumferential sliding surface of the piston ring and the aluminum alloy cylinder (
The amount of wear on the inner peripheral surface (made of A390 alloy) was measured.
比較のため硬質クロムめっき、炭化珪素を分散させたニ
ッケル複合めっき、および炭化珪素を分散させた鉄複合
めっきを施したピストンリングについてもそれぞれ同様
に試験を行なった。For comparison, piston rings with hard chromium plating, nickel composite plating with silicon carbide dispersed therein, and iron composite plating with silicon carbide dispersed therein were similarly tested.
試験結果を第２図に示す。The test results are shown in Figure 2.
（効果）
第１の実施例、および第２の実施例のピストンリングと
Ａｌ−Ｓｉ合金製シリンダとの組合せは、従来の硬質ク
ロムめっきとの組合せに比へて、ピストンリングの摩耗
は約１１５、シリンダの摩耗は約１／２に減っている。(Effect) The combination of the piston ring and the Al-Si alloy cylinder of the first example and the second example reduces the wear of the piston ring by about 115% compared to the conventional combination with hard chrome plating. , cylinder wear is reduced to about 1/2.
また、いずれの比較ピストンリングとの組合せよりも耐
摩耗性にすぐれていることがわかる。It can also be seen that the wear resistance is superior to any combination with any comparison piston ring.
以上のことから、本発明によるピストンリングとシリン
ダの組合せは、高鉛ガソリンを燃料とするエンジンなど
に対して、耐摩耗性に優れていることが理解できる。From the above, it can be seen that the combination of the piston ring and cylinder according to the present invention has excellent wear resistance for engines using high lead gasoline as fuel.
第１図は、本発明のピストンリングの断面図図中 １：
ピストンリング
２：複合めっき層
第２図は、実機試験に於けるピストンリングおよびシリ
ンダの摩耗を示すグラフである。FIG. 1 is a sectional view of the piston ring of the present invention.
Piston ring 2: Composite plating layer FIG. 2 is a graph showing the wear of the piston ring and cylinder in an actual machine test.
Claims (2)
るニッケル−燐合金めっきの基地層中に、平均粒径０．
５〜１０μｍの窒化珪素が容積比で５〜３０％の範囲で
分散している複合皮膜層を摺動面に有するピストンリン
グと、過共晶Ａｌ−Ｓｉ製シリンダとの組合せ。(1) In the base layer of a nickel-phosphorus alloy plating consisting of 0.2 to 10% by weight of phosphorus and the remainder of nickel, an average particle size of 0.2 to 10% by weight is contained.
A combination of a piston ring having a composite coating layer on its sliding surface in which silicon nitride with a diameter of 5 to 10 μm is dispersed in a range of 5 to 30% by volume, and a cylinder made of hypereutectic Al-Si.
重量％、残りがニッケルからなるニッケル−コバルト−
燐合金めっきの基地層中に、平均粒径０．５〜１０μｍ
の窒化珪素が容積比で５〜３０％の範囲で分散している
複合皮膜層を摺動面に有するピストンリングと、過共晶
Ａｌ−Ｓｉ製シリンダとの組合せ。(2) Phosphorus: 0.2-10% by weight, cobalt: 10-40%
% by weight, nickel-cobalt with the remainder being nickel
In the base layer of phosphorus alloy plating, the average grain size is 0.5 to 10 μm.
A combination of a piston ring having a composite coating layer on its sliding surface in which silicon nitride is dispersed in a volume ratio of 5 to 30%, and a cylinder made of hypereutectic Al-Si.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12466886A JPS62282150A (en) | 1986-05-31 | 1986-05-31 | Combination of piston-ring and cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12466886A JPS62282150A (en) | 1986-05-31 | 1986-05-31 | Combination of piston-ring and cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282150A true JPS62282150A (en) | 1987-12-08 |
| JPH0337028B2 JPH0337028B2 (en) | 1991-06-04 |
Family
ID=14891099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12466886A Granted JPS62282150A (en) | 1986-05-31 | 1986-05-31 | Combination of piston-ring and cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282150A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02150574A (en) * | 1988-11-30 | 1990-06-08 | Riken Corp | Piston ring |
| JPH02153075A (en) * | 1988-12-06 | 1990-06-12 | Toyota Motor Corp | Sliding member |
| JPH03117779A (en) * | 1989-09-29 | 1991-05-20 | Nissan Motor Co Ltd | Slide member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028420A (en) * | 1973-07-17 | 1975-03-24 | ||
| JPS51132311A (en) * | 1975-05-13 | 1976-11-17 | Nippon Piston Ring Co Ltd | Relative combination with cylinder and sealring of internal combustion engine |
| JPS5720534A (en) * | 1980-07-14 | 1982-02-03 | Toyota Motor Corp | Combination of cylinder bore and piston ring |
| JPS5996295A (en) * | 1982-11-26 | 1984-06-02 | Riken Corp | Wear resistant sliding parts |
-
1986
- 1986-05-31 JP JP12466886A patent/JPS62282150A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028420A (en) * | 1973-07-17 | 1975-03-24 | ||
| JPS51132311A (en) * | 1975-05-13 | 1976-11-17 | Nippon Piston Ring Co Ltd | Relative combination with cylinder and sealring of internal combustion engine |
| JPS5720534A (en) * | 1980-07-14 | 1982-02-03 | Toyota Motor Corp | Combination of cylinder bore and piston ring |
| JPS5996295A (en) * | 1982-11-26 | 1984-06-02 | Riken Corp | Wear resistant sliding parts |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02150574A (en) * | 1988-11-30 | 1990-06-08 | Riken Corp | Piston ring |
| JPH02153075A (en) * | 1988-12-06 | 1990-06-12 | Toyota Motor Corp | Sliding member |
| JPH03117779A (en) * | 1989-09-29 | 1991-05-20 | Nissan Motor Co Ltd | Slide member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0337028B2 (en) | 1991-06-04 |
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