JPS62298648A - Sliding member for internal combustion engine - Google Patents
Sliding member for internal combustion engineInfo
- Publication number
- JPS62298648A JPS62298648A JP14156286A JP14156286A JPS62298648A JP S62298648 A JPS62298648 A JP S62298648A JP 14156286 A JP14156286 A JP 14156286A JP 14156286 A JP14156286 A JP 14156286A JP S62298648 A JPS62298648 A JP S62298648A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- film
- sliding member
- combustion engine
- plated film
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 5
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract 2
- 238000007747 plating Methods 0.000 claims description 28
- 229910052804 chromium Inorganic materials 0.000 claims description 13
- 239000011651 chromium Substances 0.000 claims description 13
- 238000005260 corrosion Methods 0.000 abstract description 12
- 230000007797 corrosion Effects 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 13
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 9
- 235000019253 formic acid Nutrition 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 3
- GVEHJMMRQRRJPM-UHFFFAOYSA-N chromium(2+);methanidylidynechromium Chemical compound [Cr+2].[Cr]#[C-].[Cr]#[C-] GVEHJMMRQRRJPM-UHFFFAOYSA-N 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 235000010893 Bischofia javanica Nutrition 0.000 description 1
- 240000005220 Bischofia javanica Species 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
［産業上の利用分野］
本発明は、例えばピストンリング，シリンダライナ，タ
ペット，ロッカーアーム等の内燃機関用摺動部材に関す
る。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to sliding members for internal combustion engines, such as piston rings, cylinder liners, tappets, rocker arms, and the like.
（従来の技術）
往復動内燃機関に使用ざれる囲動部材は、高度な耐摩耗
性が要求される。それゆえに、内燃機関用摺動部材に耐
摩耗性を付与することを目的として、その摺動面に硬質
クロムめっき皮膜を形成させることが従来から多用ざれ
ている。(Prior Art) A surrounding member used in a reciprocating internal combustion engine is required to have a high degree of wear resistance. Therefore, for the purpose of imparting wear resistance to sliding members for internal combustion engines, forming a hard chromium plating film on the sliding surfaces has been frequently used.
［発明が解決しようとする問題点］
しかしながら、近年、内燃機関がますます高速化、高出
力化する傾向におり、その使用条件もますます過酷なも
のとなってきており、従来の硬質クロムめっき皮膜を有
する内燃機関用摺動部材では耐摩耗性や耐食性が充分で
はない状況にある。[Problems to be solved by the invention] However, in recent years, internal combustion engines have become faster and more powerful, and their operating conditions have become increasingly harsh. Sliding members for internal combustion engines that have coatings do not have sufficient wear resistance or corrosion resistance.
本発明は、上記に鑑みてなされたものであり、上記問題
点を解決し、優れた耐摩耗性、耐食性を有する内燃機関
用摺動部材を提供することを目的とする。The present invention has been made in view of the above, and an object of the present invention is to solve the above problems and provide a sliding member for an internal combustion engine that has excellent wear resistance and corrosion resistance.
［問題点を解決するための手段］
上記目的を達成するための本発明の構成は、少なくとも
一つの摺動面に形成ざれる硬質クロムめっき皮膜中に炭
素が１〜１０重量％含有ざれ、該皮膜硬ざがＨｖｌ，１
００ 〜Ｈｖｌ，６００でなるもので、また該皮膜中に
は炭化クロムが析出してなるもので市る。[Means for Solving the Problems] The structure of the present invention for achieving the above object is such that the hard chromium plating film formed on at least one sliding surface contains 1 to 10% by weight of carbon; Film hardness Hvl, 1
00 to Hvl, 600, and chromium carbide is precipitated in the film.
［実施例］ 以下に本発明の実施例を図面に基づいて説明する。[Example] Embodiments of the present invention will be described below based on the drawings.
第１図は、内燃機関用摺動部材の一例でおるピストンリ
ング（１）のピストンリング母材（２）の外周面に本発
明の硬質クロムめっき皮膜（３）を形成したものを示す
。ピストンリング母材（２）は、通常のステンレススチ
ール、鋳鉄が使用される。FIG. 1 shows a piston ring (1), which is an example of a sliding member for an internal combustion engine, in which a hard chromium plating film (3) of the present invention is formed on the outer peripheral surface of a piston ring base material (2). For the piston ring base material (2), ordinary stainless steel or cast iron is used.
なお、本発明の摺動部材の硬質クロムめっき皮月美は、
めっき液が、クロム１５０〜２００９／ｉ、硫酸２〜１
０ｙ／ Ｊ！にギ酸（濃度８５％）を２〜５０ｍ１／ノ
の範囲で添加したものを使い、浴温２０〜６０℃。In addition, the hard chrome plated skin of the sliding member of the present invention is
Plating solution is chromium 150-2009/i, sulfuric acid 2-1
0y/J! Formic acid (concentration 85%) was added in a range of 2 to 50 ml/no, and the bath temperature was 20 to 60°C.
電流密度２０〜６０Ａ／ｄｍ２でめっきを行い皮膜を形
成した後、熱処理を施して得られるものである。前記ギ
酸（ＨＣＯＯＨ）は、通常めっきで言うところの光沢剤
の１Ω割をしているため、結晶が緻密になり非晶質にな
る。従って、クロムめっきに対して光沢剤となるもので
あれば、酢Ｍ （ＣＨ３ＣＯＯ）ｌ） 、ホルムアルデ
ヒド（ＨＣＨＯ）やアセトアルデヒド（ＣＨ３ＣＨＯ）
でも良い。It is obtained by plating at a current density of 20 to 60 A/dm2 to form a film, followed by heat treatment. The formic acid (HCOOH) has a 1 ohm ratio compared to the brightener used in ordinary plating, so the crystals become dense and amorphous. Therefore, if it is a brightening agent for chromium plating, vinegar M (CH3COO)l), formaldehyde (HCHO) and acetaldehyde (CH3CHO) are recommended.
But it's okay.
１８＃Ｘ １２＃Ｘ ６ ｍｍの鋼製平板の片面をラッ
ピングし１μ以下の表面粗さに仕上げ、試料素材とした
。この試料の表面粗さが１μ以下の面以外の面をシール
して、めっき液がクロム酸： ｔｏＯｇ／ ｉ。One side of a 18# x 12# x 6 mm steel flat plate was lapped to a surface roughness of 1 μm or less, and used as a sample material. The surfaces of this sample other than those with surface roughness of 1μ or less were sealed, and the plating solution was chromic acid: toOg/i.
Ｈ２ＳＯ４： ５９／１．ギ酸（ＨＣＯＯＨ）：２０
ｍ／ｌの浴で、浴温：３０°Ｃ２電流密度： ４０Ａ／
ｄｍ２でめっきし、非晶質の硬質クロムめっき皮膜を形
成した後、温度４００ °Ｃで１時間熱処理を施した。H2SO4: 59/1. Formic acid (HCOOH): 20
m/l bath, bath temperature: 30°C2 current density: 40A/
After plating with dm2 to form an amorphous hard chromium plating film, heat treatment was performed at a temperature of 400°C for 1 hour.
この時の皮膜厚さは５０μで硬さはＨｖｌ 、 ３００
であった。（試料ＮＱ１・・本発明）
前記試料Ｎ（１１の熱処理条件を温度６００ ’Ｃで１
時間熱処理を施り、た。この時の皮膜の厚さは５０μで
、硬さはＨＶＩ 、 ５３０でおった。（試料Ｎα２・
・本発明）前記試料Ｎα１の熱処理条件を温度７００
’Ｃで１時間熱処理を施した。この時の皮膜の厚さは５
０μで、硬さは）Ｉｖｌ 、 ６００であった。また皮
膜中にはＸ線解析によると炭化クロムが析出していた。At this time, the film thickness was 50 μ and the hardness was Hvl, 300
Met. (Sample NQ1...Invention) The heat treatment conditions of Sample N (11) were 1 at a temperature of 600'C.
Heat treatment was performed for a period of time. The thickness of the film at this time was 50μ, and the hardness was HVI 530. (Sample Nα2・
・The present invention) The heat treatment conditions for the sample Nα1 were set to a temperature of 700.
Heat treatment was performed at 'C for 1 hour. The thickness of the film at this time is 5
At 0μ, the hardness was )Ivl, 600. Furthermore, according to X-ray analysis, chromium carbide was precipitated in the film.
これは、めっき皮膜中にとり込まれたギ酸が熱処理によ
り炭化クロムを生成し、硬さを増大させている。This is because the formic acid incorporated into the plating film generates chromium carbide through heat treatment, increasing the hardness.
（試料Ｎｏ、 ３・・本発明）
従来の硬質クロムめっきとしては、クロムめっき浴とし
て従来最も一般的に行われている方法は所謂サージェン
ト浴で必って、めっき液がクロム酸：２５０ｙ／ｊ！、
町３０４ ：２．５ ｇ／Ｉｔで、浴温：６０°Ｃ１電
流密度： ６０Ａ／ｄｍ２でめっきを行った。(Sample No. 3...Invention) For conventional hard chromium plating, the most commonly used chromium plating bath is a so-called Sargent bath, in which the plating solution is chromic acid: 250y/j. ! ,
Machi 304: Plating was performed at 2.5 g/It, bath temperature: 60°C, current density: 60 A/dm2.
この時の皮膜の厚さは５０μで、硬さはＨｖ８８０であ
った。（試料Ｎα４・・従来例）
硬質クロムめっき皮膜中に含有される炭素については、
前記めっき浴中に添加されるギ酸に起因するもので、１
重量％未満では所望の硬さが得られず、１０重但％超で
はめつき皮膜中の内部応力が高くなることによりもろく
なり、また密着性が悪くなるため、１〜１０重量％の範
囲に限定される。The thickness of the film at this time was 50μ, and the hardness was Hv880. (Sample Nα4...Conventional example) Regarding the carbon contained in the hard chrome plating film,
This is due to the formic acid added to the plating bath, and 1
If it is less than 10% by weight, the desired hardness cannot be obtained, and if it exceeds 10% by weight, the internal stress in the plating film will increase, resulting in brittleness and poor adhesion. Limited.
本発明の内燃機関用摺動部材において、硬質クロムめっ
き皮膜の硬さは、優れた耐摩耗性、耐食性を得るために
はＨｖｌ、１００〜Ｈｖｌ 、 Ｂｏｏ必要であり、こ
れは従来の硬質クロムめっき皮膜比は得られないもので
ある。また、皮膜の厚さについては、内燃機関の摺動部
材として種々あるが５〜２００μおれば充分である。In the sliding member for an internal combustion engine of the present invention, the hardness of the hard chrome plating film is required to be Hvl, 100 to Hvl, Boo in order to obtain excellent wear resistance and corrosion resistance, which is higher than that of conventional hard chrome plating. The film ratio cannot be obtained. Regarding the thickness of the coating, there are various thicknesses for sliding members of internal combustion engines, but a thickness of 5 to 200 microns is sufficient.
上記試料Ｎｏ、 １〜４について、耐摩耗性試験と耐食
性試験を行った。A wear resistance test and a corrosion resistance test were conducted on the above samples Nos. 1 to 4.
（耐摩耗性試験）
上記試料Ｎｏ １〜４を固定片とし、相手部材は、円板
状試験片（外径１３９調、内径１０５ｍ、厚さ７ｍ、材
質： Ｆｅ１２．硬ざ：ＨＲＢ９８）とし、固定片に形
成されためっき皮膜が円板状試験片に接触するようにセ
ットし、潤滑油を供給しながら円板状試験片を回転させ
て摺動させた後、固定片の摩耗料を測定した。(Abrasion resistance test) The above samples Nos. 1 to 4 were used as fixed pieces, and the counterpart member was a disk-shaped test piece (outer diameter 139, inner diameter 105 m, thickness 7 m, material: Fe12. hardness: HRB98), Set so that the plating film formed on the fixed piece is in contact with the disk-shaped test piece, and after rotating and sliding the disk-shaped test piece while supplying lubricating oil, measure the wear charge on the fixed piece. did.
試験条件は次の通りである。The test conditions are as follows.
摺動速度：１．１７７？、／秒 摺動距離：３０．７励 潤滑油： ＳＡＥ＃３０モータオイル 潤滑油の供給条件： １００ ｍｌ／分。Sliding speed: 1.177? ,/second Sliding distance: 30.7 excitation Lubricating oil: SAE #30 motor oil Lubricating oil supply conditions: 100 ml/min.
油温６０°Ｃ〜６５°Ｃ 試験片の接触′ｖＪ重：Ｆ３０Ｋｙ 試験結果を第２図に示す。Oil temperature 60°C ~ 65°C Contact 'vJ weight of test piece: F30Ky The test results are shown in Figure 2.
図から明らかな如く、本発明の試料Ｎｏ、 １〜３は、
従来例の試料Ｎα４より優れた耐摩耗性を示した。As is clear from the figure, samples Nos. 1 to 3 of the present invention are:
It exhibited better wear resistance than the conventional sample Nα4.
なお、従来の硬質クロムめっき皮膜を前述の条件で熱処
理すると硬さが低下したため、試験には使用しなかった
。これは、皮膜中の吸蔵水素が放出するためと考えられ
る。Note that when the conventional hard chromium plating film was heat treated under the above conditions, the hardness decreased, so it was not used in the test. This is thought to be due to the release of occluded hydrogen in the film.
（耐食性試験）
前記試料Ｎα１〜４について、各試料のめっき皮膜以外
の面を四弗化エチレン樹脂製テープによりシールし、塩
酸（ＭＣＩ）および硫酸（Ｈ２Ｓ０４）の液中にそれぞ
れ浸漬された後、シールをはがしその腐蝕減量を測定し
た。(Corrosion resistance test) For the samples Nα1 to Nα4, the surface of each sample other than the plating film was sealed with a tetrafluoroethylene resin tape, and after being immersed in hydrochloric acid (MCI) and sulfuric acid (H2S04) solutions, The seal was peeled off and the weight loss due to corrosion was measured.
試験条件は次の通りである。The test conditions are as follows.
塩酸、硫酸の濃度：２．５％ 塩酸、硫酸の液温： ７０’Ｃ 塩酸、硫酸の液量：１，０００威 浸漬時間：２５分 試験結果を第３図に示す。Concentration of hydrochloric acid and sulfuric acid: 2.5% Liquid temperature of hydrochloric acid and sulfuric acid: 70’C Liquid amount of hydrochloric acid and sulfuric acid: 1,000 units Soaking time: 25 minutes The test results are shown in Figure 3.
図から明らかな如く、本発明の試料Ｎｏ、 １〜３は、
従来例の試料Ｎ０１４より優れた耐食性を示した。これ
は、従来の硬質クロムめっき皮膜中のクロムの結晶の粒
界腐食が進むためと考えられる。なお、図中臼ヌキの棒
グラフは、塩［１（ＭＣＩ）を、また斜線の棒グラフは
、硫酸（町５ｏ４）を使用した場合の試験結果を示すも
のでおる。As is clear from the figure, samples Nos. 1 to 3 of the present invention are:
It exhibited better corrosion resistance than the conventional sample No. 014. This is thought to be due to progress of intergranular corrosion of chromium crystals in the conventional hard chromium plating film. In addition, the blank bar graph in the figure shows the test results when salt [1 (MCI) was used, and the diagonal line bar graph shows the test results when sulfuric acid (Machi 5o4) was used.
［発明の効果］
以上の通りで、本発明の内燃機関用摺動部材は、その摺
動面に従来の硬質クロムめっき皮膜では得られなかった
、皮膜を有することにより優れた耐摩耗性、耐食性が得
られ、過酷な運転条件下で使用される内燃機関の）舌動
部材として特にその効果が顕著である。[Effects of the Invention] As described above, the sliding member for an internal combustion engine of the present invention has a film on its sliding surface that cannot be obtained with a conventional hard chrome plating film, thereby providing excellent wear resistance and corrosion resistance. The effect is particularly remarkable as a sliding member of an internal combustion engine used under severe operating conditions.
第１図は本発明の内燃機関用摺動部月の一例であるビス
トンリングの断面図、第２図は耐摩耗性試験結果を示す
グラフ図、第３図は耐食性試験結果を示すグラフ図、で
ある。
図中の符号
１・・ピストンリング
２・・ピストンリング母材
３・・本発明の硬質クロムめっき皮膜
第１図
第２図
嵐１ 宛２ 嵐３ １４４
第３図
口・・・ＨＣｌ
り・・・Ｈ２ＳＯ吟
試料 試料 試料 試料FIG. 1 is a cross-sectional view of a piston ring which is an example of a sliding part for an internal combustion engine according to the present invention, FIG. 2 is a graph showing the results of a wear resistance test, and FIG. 3 is a graph showing the results of a corrosion resistance test. It is. Reference numeral 1 in the figure... Piston ring 2... Piston ring base material 3... Hard chrome plating film of the present invention Fig. 1 Fig. 2 Arashi 1 Address 2 Arashi 3 144 Fig. 3 Opening... HCl Ri...・H2SO sample sample sample sample
Claims (2)
めっき皮膜中に炭素が１〜１０重量％含有され、該皮膜
硬さがＨｖ１，１００〜Ｈｖ１，６００でなることを特
徴とする内燃機関用摺動部材。(1) An internal combustion engine characterized in that a hard chromium plating film formed on at least one sliding surface contains 1 to 10% by weight of carbon, and the film hardness is Hv 1,100 to Hv 1,600. Sliding members for use.
していることを特徴とする前記特許請求の範囲第１項記
載の内燃機関用摺動部材。(2) The sliding member for an internal combustion engine according to claim 1, wherein chromium carbide is precipitated in the hard chromium plating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141562A JPH063172B2 (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61141562A JPH063172B2 (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62298648A true JPS62298648A (en) | 1987-12-25 |
| JPH063172B2 JPH063172B2 (en) | 1994-01-12 |
Family
ID=15294857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61141562A Expired - Fee Related JPH063172B2 (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063172B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10011918A1 (en) * | 2000-03-11 | 2001-09-27 | Federal Mogul Burscheid Gmbh | Piston ring with wear-resistant layer has this layer consisting mainly of chromium, carbon and hydrogen |
| JP2003098735A (en) * | 2001-09-20 | 2003-04-04 | Canon Inc | Method of manufacturing toner and dispersing machine used for the same |
| JP2010117697A (en) * | 2008-10-17 | 2010-05-27 | Seiko Epson Corp | Toner carrying roller, developing device, and image forming device |
| JP2011157610A (en) * | 2010-02-03 | 2011-08-18 | Tocalo Co Ltd | Member coated with dlc film and method for manufacturing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528379A (en) * | 1978-08-23 | 1980-02-28 | Nippon Piston Ring Co Ltd | Wear resistant sliding material for internal combustion engine |
| JPS5569743A (en) * | 1978-11-22 | 1980-05-26 | Nippon Piston Ring Co Ltd | Side rail for combined oil rings |
| JPS5823256A (en) * | 1981-08-05 | 1983-02-10 | Toyota Motor Corp | Piston ring |
| JPS60164650U (en) * | 1984-04-12 | 1985-11-01 | 帝国ピストンリング株式会社 | Combination oil ring spacer expander |
-
1986
- 1986-06-18 JP JP61141562A patent/JPH063172B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528379A (en) * | 1978-08-23 | 1980-02-28 | Nippon Piston Ring Co Ltd | Wear resistant sliding material for internal combustion engine |
| JPS5569743A (en) * | 1978-11-22 | 1980-05-26 | Nippon Piston Ring Co Ltd | Side rail for combined oil rings |
| JPS5823256A (en) * | 1981-08-05 | 1983-02-10 | Toyota Motor Corp | Piston ring |
| JPS60164650U (en) * | 1984-04-12 | 1985-11-01 | 帝国ピストンリング株式会社 | Combination oil ring spacer expander |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10011918A1 (en) * | 2000-03-11 | 2001-09-27 | Federal Mogul Burscheid Gmbh | Piston ring with wear-resistant layer has this layer consisting mainly of chromium, carbon and hydrogen |
| DE10011918B4 (en) * | 2000-03-11 | 2004-07-15 | Federal-Mogul Burscheid Gmbh | Piston ring with wear protection layer |
| JP2003098735A (en) * | 2001-09-20 | 2003-04-04 | Canon Inc | Method of manufacturing toner and dispersing machine used for the same |
| JP2010117697A (en) * | 2008-10-17 | 2010-05-27 | Seiko Epson Corp | Toner carrying roller, developing device, and image forming device |
| JP2011157610A (en) * | 2010-02-03 | 2011-08-18 | Tocalo Co Ltd | Member coated with dlc film and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH063172B2 (en) | 1994-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |