JPS62298647A - Sliding member for internal combustion engine - Google Patents
Sliding member for internal combustion engineInfo
- Publication number
- JPS62298647A JPS62298647A JP14156186A JP14156186A JPS62298647A JP S62298647 A JPS62298647 A JP S62298647A JP 14156186 A JP14156186 A JP 14156186A JP 14156186 A JP14156186 A JP 14156186A JP S62298647 A JPS62298647 A JP S62298647A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- sliding member
- sliding
- 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 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 21
- 239000011651 chromium Substances 0.000 claims abstract description 21
- 238000007747 plating Methods 0.000 claims description 25
- 238000005260 corrosion Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000694 effects Effects 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 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000019253 formic acid Nutrition 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
- 150000003839 salts Chemical class 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 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 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- PYRZPBDTPRQYKG-UHFFFAOYSA-N cyclopentene-1-carboxylic acid Chemical compound OC(=O)C1=CCCC1 PYRZPBDTPRQYKG-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007654 immersion Methods 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
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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.
往復動内燃機関に使用ざれる開動部材は、高度な耐摩耗
性が要求ざれる。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。Opening members used in reciprocating internal combustion engines are 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、内燃別間がますます高速化、高出
力化する傾向にあり、その使用条件もますます過酷なも
のとなってきてあり、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, there has been a trend toward higher speeds and higher outputs for internal combustion engines, and the conditions for their use have also become increasingly severe, making it difficult to use conventional hard chrome. Sliding members for internal combustion engines that have a plating film 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おり、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 aims 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だめの本発明の、構成は、少なくと
も一つの摺動面に、非晶質でなる硬質クロムめっき皮膜
を形成してなるものである。[Means for Solving the Problems] In order to achieve the above object, the present invention has a structure in which an amorphous hard chromium plating film is formed on at least one sliding surface.
［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、内燃は開用）８動部材の一例であるピストン
リング（１）のピストンリング母材（２）の外周面に非
晶質でなる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。Figure 1 shows a piston ring (1), which is an example of a moving member (not used for internal combustion), with an amorphous hard chromium plating film (3) formed on the outer peripheral surface of the piston ring base material (2). shows. 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非晶質でなる硬質クロムめっ
き皮膜は、めっき液が、クロム１５０〜２００９／、（
、硫酸２〜１０ｈ／ｌにギ酸く濃度８５％）１を２〜５
０ｄ／ ｉの範囲で添加したものを使い、浴温２０〜６
０°Ｃ，電流密度２０〜６０Ａ ／ｄｍ”でめっきを行
い形成される。前記ギＭ （ＨＣＯＯＩ−１）は、通常
めっきで言うところの光沢剤の役割をしているため、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、酢狼（ＣＨ３ＣＯＯ
Ｈ） 、ホルムアルデヒド（）ＩｃＩ−１ｏ ＞やアセ
トアルデヒド（ＣＨ３ＣＨＯ）でも良い。The amorphous hard chromium plating film of the sliding member of the present invention has a plating solution containing chromium 150-2009/(
, sulfuric acid 2-10 h/l and formic acid (concentration 85%) 1 to 2-5
Use something added in the range of 0d/i, bath temperature 20-6
It is formed by plating at 0°C and a current density of 20 to 60 A/dm. The above-mentioned GiM (HCOOI-1) acts as a brightening agent in ordinary plating, so the crystals are dense. Therefore, if it is a brightening agent for chrome plating, CH3COO
H), formaldehyde ()IcI-1o> or acetaldehyde (CH3CHO) may be used.
１８＃ Ｘ １２ｖｔｐｒ Ｘ ６ ｔｍｎの１ｍｆｆ
４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： １０
０ ’ｉ／ ｉ。18# x 12vtpr x 6 tmn's 1mff
4 One side of the flat plate was lapped to give a surface roughness of 1 μm or less, and this was used as a sample material. The surfaces of this sample other than those with surface roughness of 1 μ or less were sealed, and the plating solution was chromic acid: 10
0'i/i.
Ｈ２ＳＯ４： ５ｇ／ｉ、ギＭ（ＨＣＯＯＨ）：２０ｄ
／ Ｊの浴で、浴温：３０”Ｃ，電流密度： ４０Ａ／
ｄｍ２Ｔ：めっきし、非晶質の硬質クロムめっき皮膜を
形成した。H2SO4: 5g/i, GiM (HCOOH): 20d
/ J bath, bath temperature: 30”C, current density: 40A/
dm2T: Plated to form an amorphous hard chromium plating film.
この時の皮膜厚さは５０μで硬さはＨｖｌ 、 ０３０
であった。（試料ＮＱ’ｌ・・本発明）
前記試料Ｎα１を温度２００°Ｃで１時間熱処理を施し
た。この時の皮膜の厚さは５０μで、硬さはＨｖｌ 。At this time, the film thickness was 50μ and the hardness was Hvl, 030
Met. (Sample NQ'l...Invention) The sample Nα1 was heat-treated at a temperature of 200°C for 1 hour. The thickness of the film at this time was 50μ, and the hardness was Hvl.
１００であった。（試料ＮＱ２・・本発明）また同様に
、前記試料ＮＱ１を温度３００’Ｃで１時間熱処理を施
した。この時の皮膜の厚さは５０μで、硬さはＨｖｔ
、 ２００であった。（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
浴であって、めっき液がクロム酸： ２５０ ｇ／ ｉ
、 Ｈ２ＳＯ４： ２．５ ’ｊ／ ｊＱで、浴温：６
０’Ｃ，電流密度： ６０Ａ／ｄｍ２でめっきを行った
。It was 100. (Sample NQ2...present invention) Similarly, the sample NQ1 was heat-treated at a temperature of 300'C for 1 hour. The thickness of the film at this time was 50μ, and the hardness was Hvt.
, 200. (Sample No. 3...Invention) As for conventional hard chromium plating, the most commonly used chromium plating bath is the so-called Sargent bath, in which the plating solution is chromic acid: 250 g/i
, H2SO4: 2.5'j/jQ, bath temperature: 6
Plating was performed at 0'C and current density: 60A/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）
なお、上記めっき皮膜の組織偶成はＸ線解析によって行
った。第４図（ａ）〜（ｄ）より明らかな如く、試料Ｎ
α１〜３は非晶質をなしているのに対し、試料４はクロ
ムの結晶質を示している。The thickness of the film at this time was 50μ, and the hardness was Hv880. (Sample Nα4: Conventional Example) The formation of the structure of the plating film was determined by X-ray analysis. As is clear from Fig. 4(a) to (d), sample N
Samples α1 to α3 are amorphous, whereas sample 4 shows crystalline chromium.
上記試料Ｎα１〜４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 samples Nα1 to Nα4.
（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１３９ｍ、内径１０５ｍ、厚さ７ｍ、
材質： Ｆｅ１２．硬ざ： ＨＲＢ９８ ）とし、固定
片に形成されためつき皮膜が円板状試験片に接触するよ
うにセットし、潤滑油を供給しなから円板状試験片を回
転させて周動させた後、固定片の摩耗料を測定した。(Abrasion resistance test) The above samples No. 1 to 4 were used as fixed pieces, and the counterpart member was a disk-shaped test piece (outer diameter 139 m, inner diameter 105 m, thickness 7 m,
Material: Fe12. Hardness: HRB98), set so that the tamping film formed on the fixed piece is in contact with the disk-shaped test piece, and after rotating the disk-shaped test piece without supplying lubricating oil. , the wear charge of the fixed piece was measured.
試験条件は次の通りである。The test conditions are as follows.
摺動速度：１．１ｍ／秒 摺動距離：３０．７Ｋｇ（ 潤滑油： ＳＡＥ＃３０モータオイル 潤滑油の供給条件： １００ ｍ／分。Sliding speed: 1.1m/sec Sliding distance: 30.7Kg ( Lubricating oil: SAE #30 motor oil Lubricating oil supply conditions: 100 m/min.
油温６０’Ｃ〜６５°Ｃ 試験片の接触荷重二８０に３ 試験結果を第２図に示す。Oil temperature 60’C~65°C Contact load of test piece 280 to 3 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ＮＱ４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 NQ4.
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、皮膜中の吸蔵水素か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その腐蝕減車
を測定した。(Corrosion Resistance Test) Regarding the samples Nα1 to Nα4, the corrosion reduction rate was measured on the surface other than the plated film using a tetrafluoroethylene resin tape.
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、硫酸の液温ニア０’Ｃ
塩Ｐ、 ＷＬｍ（１）液’ｆｌ ： １，０００ ｔｒ
ｄｌ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 near 0'C Salt P, WLm (1) liquid'fl: 1,000 tr
dl immersion time: 25 minutes The test results are shown in FIG.
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ＩＨｃＩ）を、また斜線の棒グラフは、硫
Ｍ （町ｓｏ４ ）を使用した場合の試験結果を示すも
のである。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 IHcI) was used, and the diagonal line bar graph shows the test results when sulfur M (Machi SO4) was used.
本発明の内燃機関用摺動部材において、その非晶質でな
る硬質クロムめっき皮膜の硬さは、Ｈｖｌ 。In the sliding member for an internal combustion engine of the present invention, the hardness of the amorphous hard chromium plating film is Hvl.
０３０〜Ｈｖ１，２００であり、従来の硬質クロムめっ
き皮膜では得られないものである。また、皮膜厚さにつ
いては、内燃機関の１８動部材として種々有るが５μ〜
２００μ程度であれば充分である。030 to Hv1,200, which cannot be obtained with conventional hard chromium plating films. Regarding the film thickness, there are various types of 18 moving parts for internal combustion engines, but from 5μ to
A thickness of about 200μ is sufficient.
［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
動面に非晶質でなる硬質クロムめっき皮膜を有する。し
たがって、従来のクロムの結晶質を有する硬質クロムめ
っき皮膜では得られなかった、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摺動部材
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 an amorphous hard chromium plating film on its sliding surface. Therefore, it provides wear resistance and corrosion resistance that cannot be obtained with conventional hard chromium plating films with crystalline chromium, and its effects are particularly noticeable as sliding members of internal combustion engines used under harsh operating conditions. It is.
第１図は本発明の内燃機関用摺動部材の一例であるピス
トンリングの断面図、第２図は耐摩耗［生試験結果を示
すグラフ図、第３図は耐食性試験結果を示すグラフ図、
第４図は各試料についてのＸ線解析チャートを示す図、
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FIG. 1 is a cross-sectional view of a piston ring which is an example of a sliding member for an internal combustion engine according to the present invention, FIG. 2 is a graph showing wear resistance [raw test results], and FIG. 3 is a graph showing corrosion resistance test results.
Figure 4 is a diagram showing the X-ray analysis chart for each sample,
It is. Code 1 in the diagram: Piston ring 2: Piston ring base material
Claims (3)
ロムめっき皮膜を形成してなることを特徴とする内燃機
関用摺動部材。(1) A sliding member for an internal combustion engine, characterized in that an amorphous hard chromium plating film is formed on at least one sliding surface.
１，０３０〜Ｈｖ１，２００であ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 hardness of the amorphous hard chromium plating film is Hv
1,030 to 1,200 Hv, the sliding member for an internal combustion engine according to claim 1.
〜２００μであ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。(3) The thickness of the amorphous hard chromium plating film is 5μ
The sliding member for an internal combustion engine according to claim 1, wherein the sliding member has a diameter of 200μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14156186A JPS62298647A (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14156186A JPS62298647A (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62298647A true JPS62298647A (en) | 1987-12-25 |
| JPH0587673B2 JPH0587673B2 (en) | 1993-12-17 |
Family
ID=15294830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14156186A Granted JPS62298647A (en) | 1986-06-18 | 1986-06-18 | Sliding member for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62298647A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07137082A (en) * | 1993-11-16 | 1995-05-30 | Towa Kk | Mold for molding resin |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6198949A (en) * | 1984-10-19 | 1986-05-17 | Riken Corp | Piston ring |
-
1986
- 1986-06-18 JP JP14156186A patent/JPS62298647A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6198949A (en) * | 1984-10-19 | 1986-05-17 | Riken Corp | Piston ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07137082A (en) * | 1993-11-16 | 1995-05-30 | Towa Kk | Mold for molding resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0587673B2 (en) | 1993-12-17 |
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