JPH03265761A - Cylinder liner - Google Patents
Cylinder linerInfo
- Publication number
- JPH03265761A JPH03265761A JP6527890A JP6527890A JPH03265761A JP H03265761 A JPH03265761 A JP H03265761A JP 6527890 A JP6527890 A JP 6527890A JP 6527890 A JP6527890 A JP 6527890A JP H03265761 A JPH03265761 A JP H03265761A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder liner
- property
- hard particles
- austenite
- matrix
- 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
- 239000002245 particle Substances 0.000 claims abstract description 25
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 18
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract description 5
- 235000019253 formic acid Nutrition 0.000 abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、耐食性と耐摩耗性及び耐スカツフ性を兼ね備
えたシリンダライナに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cylinder liner that has corrosion resistance, wear resistance, and scuff resistance.
近年の内燃機関に対する要求として、特徴的なものは従
来からの高速、高出力化に加え、長寿命化、低公害化の
要求が加わってきたことである。A characteristic feature of recent demands on internal combustion engines is that in addition to the conventional demands for higher speeds and higher outputs, demands for longer life and lower pollution have also been added.
エンジンの出力向上は高過給化等によって対応している
ため、シリンダライナはより耐スカツフ性が要求されて
いる。As engine output is increased by increasing supercharging, cylinder liners are required to be more resistant to scuffing.
他方、軽油あるいは重油を燃料として使用しているディ
ーゼルエンジンにおいては、その運転条件によっては燃
焼室で生成する硫酸によって、シリンダライナは著しく
腐食摩耗を受けることがある。更に、近年排気ガス対策
として、アルコール燃料を使用することも検討されてい
るが、この場合の燃焼生成物はギ酸であり、シリンダラ
イナは上記同様に腐食摩耗を受けることになる。何れに
してもシリンダライナの内周面で腐食摩耗が進行した場
合、エンジンの寿命は著しく短いものとなるので、シリ
ンダライナ自体の耐食性の改善も求められている。On the other hand, in diesel engines that use light oil or heavy oil as fuel, depending on the operating conditions, the cylinder liner may be subject to significant corrosive wear due to sulfuric acid produced in the combustion chamber. Furthermore, in recent years, the use of alcohol fuel has been considered as a measure against exhaust gases, but the combustion product in this case is formic acid, and the cylinder liner will be subject to corrosive wear in the same manner as described above. In any case, if corrosion wear progresses on the inner circumferential surface of the cylinder liner, the life of the engine will be significantly shortened, so there is a need to improve the corrosion resistance of the cylinder liner itself.
しかしながら、これまでの内燃機関用シリンダライナの
材料である鋳鉄は、上記の耐摩耗性、耐スカッフ性、耐
食性の点で不充分であり、高速、高出力化、長寿命化、
低公害化の課題に応えることができない。また、耐食性
を重視した材料では、耐摩耗性、耐スカツフ性が不充分
であり、耐摩耗性、耐スカツフ性を重視した材料では、
耐食性が不充分であるというトレードオフの関係が存在
していた。However, cast iron, which has been the material for cylinder liners for internal combustion engines, has been insufficient in terms of the above-mentioned wear resistance, scuff resistance, and corrosion resistance.
Unable to meet the challenge of reducing pollution. In addition, materials with emphasis on corrosion resistance have insufficient abrasion resistance and scuff resistance; materials with emphasis on abrasion resistance and scuff resistance,
There was a trade-off relationship in that corrosion resistance was insufficient.
本発明は耐摩耗性、耐スカツフ性、及び耐食性を兼ね備
えたシリンダライナを提供し、内燃機関に対する近年の
要求に応えようとするものである。The present invention provides a cylinder liner that has wear resistance, scuff resistance, and corrosion resistance in order to meet recent demands for internal combustion engines.
上記の課題を解決するための本発明のシリンダライナの
構成は、マトリックスの組織がオーステナイトである合
金鋳鉄でなり、内周面に硬質粒子が分散され埋め込まれ
ていることを特徴とする。The structure of the cylinder liner of the present invention for solving the above problems is characterized in that it is made of alloyed cast iron whose matrix structure is austenite, and hard particles are dispersed and embedded in the inner circumferential surface.
ここで、シリンダライナ母材の合金鋳鉄のマトリックス
をオーステナイトとするには、例えばＮｉを１２％以上
含有させればよい。そして、２２％を越えると、耐食性
はそれほど増加せずコスト高を招くので、それ以下とす
るのがよい。この系の合金鋳鉄はニレジスト鋳鉄として
知られており、耐食性、耐熱性にすぐれ、非磁性で、熱
膨張率が太きくＡｎ合金に鋳包む場合などに好適な材料
である。Here, in order to make the matrix of the cast iron alloy of the cylinder liner base material austenite, it is sufficient to contain, for example, 12% or more of Ni. If it exceeds 22%, the corrosion resistance will not increase much and the cost will increase, so it is better to keep it lower than that. This type of alloyed cast iron is known as Niresist cast iron, and is excellent in corrosion resistance and heat resistance, is non-magnetic, and has a large coefficient of thermal expansion, making it a material suitable for casting into An alloy.
また、硬質粒子としてはＳ ｊ Ｃ，Ａ ７！２０３、
Ｃｒ ２ｃｌ＋ 、Ｓ ｉ ３Ｎ４等から選べばよい。In addition, as hard particles, S j C, A 7!203,
It may be selected from Cr 2cl+, S i 3N4, etc.
硬質粒子の粒径は３〜２０μｍ、分散量は面積比で５〜
２０％の範囲が望ましい。The particle size of the hard particles is 3 to 20 μm, and the amount of dispersion is 5 to 5 in terms of area ratio.
A range of 20% is desirable.
シリンダライナの母材のマトリックスの組織をオーステ
ナイトとすることにより、重油、軽油あるいはアルコー
ルの燃焼に伴って生成する硫酸やギ酸に対する耐食性を
高めることができる。更に、内周面に硬質粒子が埋め込
まれていることにより、耐スカツフ性、耐摩耗性の優れ
たシリンダライナを提供できる。また、オーステナイト
鋳鉄は鋳造性、機械加工性が比較的良好で、シリンダラ
イナの製造が容易である。しかもオーステナイトマトリ
ックスは比較的軟らかく塑性加工性が良好であるので、
硬質粒子の埋め込み性がよく、がっ埋め込まれた硬質粒
子の脱落の危険も少ないので、硬質粒子の埋め込みに適
している。By making the structure of the matrix of the base material of the cylinder liner austenite, corrosion resistance against sulfuric acid and formic acid produced when heavy oil, light oil, or alcohol is burned can be improved. Furthermore, since hard particles are embedded in the inner peripheral surface, a cylinder liner with excellent scuff resistance and wear resistance can be provided. In addition, austenitic cast iron has relatively good castability and machinability, making it easy to manufacture cylinder liners. Moreover, since the austenite matrix is relatively soft and has good plastic workability,
It is suitable for embedding hard particles because it has good embedding properties and there is little risk of embedded hard particles falling off.
下記の組成のニレジスト鋳鉄で、内径１００φｍｍのシ
リンダライナを作製した。この合金鋳鉄のマトリックス
はオーステナイトであった。A cylinder liner with an inner diameter of 100φmm was manufactured using Niresist cast iron having the following composition. The matrix of this cast iron alloy was austenitic.
重量比でＴ、Ｃ，２，５％、Ｓｉ１，５％、Ｍ ｎ １
．２％、Ｐ ０．０７％、３０．０７％、Ｎｉ１７．０
％、Ｃｒｌ。Weight ratio: T, C, 2.5%, Si 1.5%, M n 1
．． 2%, P 0.07%, 30.07%, Ni17.0
%, Crl.
８％、Ｃｕ ６．５％、Ｆｅ残部。8%, Cu 6.5%, balance Fe.
そして、硬質粒子としてＳｉＣを選び、上記シリンダラ
イナの内周面に埋め込み、仕上加工を施して本発明のシ
リンダライナを得た。硬質粒子の埋め込み方法は、例え
ば硬質粒子を含ませたランプ液をシリンダライナの内周
面に注入して、弾性的に負荷されたラップ羽根を有する
ラップ工具を、ソリンダライナ内を回転させながら軸方
向に往復運動させる。この際、硬質粒子によりライナ内
周面に多数の溝が形成され、硬質粒子はこれらの溝表面
に埋め込まれ又は溶着される（特公昭５５８３０９号参
照）。第１［ｆｆｌは本発明のシリンダライナ１の正面
図、第２図はその要部拡大断面図を示し、２は平滑に仕
上げられた内周面、３は内周面２に形成された溝、４は
内周面２の溝３に埋め込まれた硬質粒子である。Then, SiC was selected as the hard particles, embedded in the inner circumferential surface of the cylinder liner, and subjected to finishing processing to obtain the cylinder liner of the present invention. A method of embedding hard particles is, for example, by injecting lamp fluid containing hard particles into the inner circumferential surface of a cylinder liner, and using a lap tool with elastically loaded lap blades to move the lamp fluid in the axial direction while rotating inside the cylinder liner. make a reciprocating motion. At this time, many grooves are formed on the inner peripheral surface of the liner by the hard particles, and the hard particles are embedded or welded into the surfaces of these grooves (see Japanese Patent Publication No. 558309). 1 [ffl is a front view of the cylinder liner 1 of the present invention, FIG. , 4 are hard particles embedded in the groove 3 of the inner peripheral surface 2.
本発明に係るシリンダライナ素材（上記ニレジスト鋳鉄
）と、Ｃｒめっき、タフトライド処理、及び無処理の従
来のシリンダライナ素材（ＦＣ２５相当の片状黒鉛鋳鉄
）について、浸漬腐食試験を行い、その結果を第３図に
示す。An immersion corrosion test was conducted on the cylinder liner material according to the present invention (the Niresist cast iron mentioned above) and the conventional cylinder liner material (flake graphite cast iron equivalent to FC25) with Cr plating, tuftride treatment, and no treatment, and the results were summarized as follows. Shown in Figure 3.
浸漬腐食試験の条件は次の通りである。The conditions for the immersion corrosion test are as follows.
腐食液 ：硫酸、ギ酸
濃度 ：５％
液温 ニア０℃
浸漬時間：４０分（硫酸）、６０分（ギ酸）摩耗ばあら
さ計にて腐食部とそうでない部分との段差を読み取った
ものである。Corrosion liquid: sulfuric acid, formic acid Concentration: 5% Liquid temperature: Near 0°C Immersion time: 40 minutes (sulfuric acid), 60 minutes (formic acid) The level difference between corroded areas and non-corroded areas was read using a wear roughness meter. .
第３図によれば、本発明に係るシリンダライナ素材は、
従来のものに比較して耐食性が著しくすぐれていること
がわかる。According to FIG. 3, the cylinder liner material according to the present invention is
It can be seen that the corrosion resistance is significantly better than that of conventional products.
また、本発明の上記シリンダライナと、硬質粒子を埋め
込まないニレジスト鋳鉄のシリンダライナと、ボロン鋳
鉄のシリンダライナとを、ディーゼルエンジンに組み付
けて２０００時間の耐久試験を行い、耐久試験後のシリ
ンダライナの上死点における摩耗量を比較した結果を第
４図に示す。In addition, the above-mentioned cylinder liner of the present invention, a Ni-Resist cast iron cylinder liner in which hard particles are not embedded, and a boron cast iron cylinder liner were assembled into a diesel engine and subjected to a 2000-hour durability test. Figure 4 shows the results of comparing the amount of wear at top dead center.
第４図から、本発明のシリンダライナは、従来のものに
比較して耐摩耗性が著しくすぐれていることがわかる。From FIG. 4, it can be seen that the cylinder liner of the present invention has significantly better wear resistance than the conventional cylinder liner.
以上説明したように本発明のシリンダライナは、マトリ
ックスの＆［ｌ織がオーステナイトである合金鋳鉄でな
るので高い耐食性を有し、かつ内周面に硬質粒子を埋め
込んだことにより優れた耐摩耗性、耐スカツフ性を兼ね
備えるものである。そして、オーステナイトマトリック
スは比較的軟らかく塑性加工性が良好であるので、前記
硬質粒子の埋め込み性がよく、かつ埋め込まれた硬質粒
子の脱落の危険も少なく、良好な摺動面を形成できる。As explained above, the cylinder liner of the present invention has high corrosion resistance because it is made of alloyed cast iron whose matrix weave is austenite, and has excellent wear resistance due to the hard particles embedded in the inner peripheral surface. , and has scuff resistance. Since the austenite matrix is relatively soft and has good plastic workability, the hard particles can be embedded easily, and there is little risk of the embedded hard particles falling off, making it possible to form a good sliding surface.
したがって、強い耐食性を要求される低温運転の長いエ
ンジンやＥＧＲを適用したエンジン等の長寿命化を図る
ことができる。Therefore, it is possible to extend the life of an engine that requires strong corrosion resistance and operates at low temperatures for a long time, or an engine that uses EGR.
第１図は本発明の一実施例を示すシリンダライナの正面
図、第２図はその要部拡大断面図、第３図は浸漬腐食試
験の結果を示す図、第４図は耐久試験の結果を示す図で
ある。
ｌはシリンダライナ、２は内周面、３は溝、４は硬質粒
子。Fig. 1 is a front view of a cylinder liner showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of its main parts, Fig. 3 is a drawing showing the results of an immersion corrosion test, and Fig. 4 is a result of a durability test. FIG. 1 is a cylinder liner, 2 is an inner peripheral surface, 3 is a groove, and 4 is a hard particle.
Claims (3)
鋳鉄でなり、内周面に硬質粒子が分散され埋め込まれて
いることを特徴とするシリンダライナ。(1) A cylinder liner characterized by being made of alloyed cast iron whose matrix structure is austenite, and having hard particles dispersed and embedded in the inner circumferential surface.
ニレジスト鋳鉄であることを特徴とする請求項１記載の
シリンダライナ。(2) The cylinder liner according to claim 1, wherein the alloy cast iron is Niresist cast iron containing 12 to 22% Ni by weight.
＿３、又はＳｉ＿３Ｎ＿４であることを特徴とする請求
項１記載のシリンダライナ。(3) Hard particles are SiC, Al_2O_3, Cr_2O
The cylinder liner according to claim 1, wherein the cylinder liner is made of Si_3N_4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6527890A JPH03265761A (en) | 1990-03-15 | 1990-03-15 | Cylinder liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6527890A JPH03265761A (en) | 1990-03-15 | 1990-03-15 | Cylinder liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03265761A true JPH03265761A (en) | 1991-11-26 |
Family
ID=13282301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6527890A Pending JPH03265761A (en) | 1990-03-15 | 1990-03-15 | Cylinder liner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03265761A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000066918A1 (en) * | 1999-04-30 | 2000-11-09 | Mahle Gmbh | Piston engine with light-alloy cylinder |
| JP2007278090A (en) * | 2006-04-03 | 2007-10-25 | Mazda Motor Corp | Sliding member |
| CN103667869A (en) * | 2013-12-14 | 2014-03-26 | 河南省中原内配股份有限公司 | Surface alloyed cylinder jacket and production method thereof |
| CN107649658A (en) * | 2017-07-25 | 2018-02-02 | 中原内配集团安徽有限责任公司 | A kind of preparation technology of aluminium alloy type cylinder sleeve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138050A (en) * | 1983-12-26 | 1985-07-22 | Toyota Motor Corp | Corrosion and wear resistant cast iron |
| JPS61144469A (en) * | 1984-12-18 | 1986-07-02 | Teikoku Piston Ring Co Ltd | Sliding surface opposed structure |
-
1990
- 1990-03-15 JP JP6527890A patent/JPH03265761A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138050A (en) * | 1983-12-26 | 1985-07-22 | Toyota Motor Corp | Corrosion and wear resistant cast iron |
| JPS61144469A (en) * | 1984-12-18 | 1986-07-02 | Teikoku Piston Ring Co Ltd | Sliding surface opposed structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000066918A1 (en) * | 1999-04-30 | 2000-11-09 | Mahle Gmbh | Piston engine with light-alloy cylinder |
| US6546922B1 (en) | 1999-04-30 | 2003-04-15 | Mahle Gmbh | Piston engine with light-alloy cylinder |
| JP2007278090A (en) * | 2006-04-03 | 2007-10-25 | Mazda Motor Corp | Sliding member |
| CN103667869A (en) * | 2013-12-14 | 2014-03-26 | 河南省中原内配股份有限公司 | Surface alloyed cylinder jacket and production method thereof |
| CN103667869B (en) * | 2013-12-14 | 2015-07-29 | 中原内配集团股份有限公司 | A kind of surface alloying cylinder sleeve and production method thereof |
| CN107649658A (en) * | 2017-07-25 | 2018-02-02 | 中原内配集团安徽有限责任公司 | A kind of preparation technology of aluminium alloy type cylinder sleeve |
| CN107649658B (en) * | 2017-07-25 | 2020-01-07 | 中原内配集团安徽有限责任公司 | Preparation process of aluminum alloy cylinder sleeve |
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