JPS6280363A - Manufacturing method of cylinder liner - Google Patents
Manufacturing method of cylinder linerInfo
- Publication number
- JPS6280363A JPS6280363A JP21885285A JP21885285A JPS6280363A JP S6280363 A JPS6280363 A JP S6280363A JP 21885285 A JP21885285 A JP 21885285A JP 21885285 A JP21885285 A JP 21885285A JP S6280363 A JPS6280363 A JP S6280363A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder liner
- manufacturing
- cylinder
- cast iron
- wear resistance
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 2
- 229910001562 pearlite Inorganic materials 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000004093 laser heating Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、舶用ディーゼルエンジン等に使用されるシリ
ンダライナの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing cylinder liners used in marine diesel engines and the like.
［従来の技術］
一般に、舶用ディーゼルエンジン等に使用されるシリン
ダライナは、内表面をピストンリングが召動するため耐
摩耗性が要求される。[Prior Art] Cylinder liners used in marine diesel engines and the like are generally required to have wear resistance because piston rings act on their inner surfaces.
［発明が解決しようとする問題点］
耐摩耗性を向上させるために、通常考えられることは焼
入れである。しかし、シリンダが比較的大きいため、通
常の方法では一度に焼入れを行えない問題があり、又一
度に焼入れを行えたとしても、変形を起す問題があった
。[Problems to be Solved by the Invention] In order to improve wear resistance, hardening is usually considered. However, since the cylinder is relatively large, there is a problem in that it cannot be hardened all at once using normal methods, and even if hardening can be done all at once, there is a problem that deformation occurs.
本発明は斯かる実情に鑑み、変形を生じない方法で熱処
理を施して耐摩耗性を向上させるようにしたシリンダラ
イナの製造方法を提供しようとするものである。In view of these circumstances, the present invention seeks to provide a method for manufacturing a cylinder liner in which the cylinder liner is heat-treated in a manner that does not cause deformation to improve wear resistance.
［問題点を解決するための手段］
本発明は、内表面に形成したウェーブ形状のランド部に
対しレーザ熱処理を施すものである。[Means for Solving the Problems] According to the present invention, a wave-shaped land portion formed on the inner surface is subjected to laser heat treatment.
［作 用Ｊ
従って、ランド部の表面部だけが部分的に焼入れされる
ことから、変形が防止されしがも耐摩耗性が向上する。[Function J] Therefore, since only the surface portion of the land portion is partially hardened, deformation is prevented and wear resistance is improved.
［実 施 例］ 以下、図面を基づいて本発明の詳細な説明する。[Example] Hereinafter, the present invention will be described in detail based on the drawings.
第１図において、１はシリンダライナであり、その内表
面には、ピストンリング２摺動方向に凹凸加工によるウ
ェーブ形状が形成されている。In FIG. 1, reference numeral 1 denotes a cylinder liner, and a wave shape is formed on the inner surface thereof by uneven processing in the sliding direction of the piston ring 2. As shown in FIG.
本発明では、このシリンダライナ１内表面のウェーブ形
状のランド部３に対し、各段毎に順次表面部だけレーザ
熱処理（焼入れ）、即ちレーザ加熱した後自然冷却若し
くは送風冷却したものである。In the present invention, the wave-shaped land portion 3 on the inner surface of the cylinder liner 1 is subjected to laser heat treatment (quenching), that is, laser heating, only the surface portion of each stage is sequentially subjected to natural cooling or air cooling.
このようにして、シリンダライナ１のランド部３にレー
ザ熱処理を施すと、その部分の耐摩耗性が向上する。ち
なみに、通常使用されるライナ材は高リン、高チタン入
り片状黒鉛鋳鉄であるが、レーザ熱処理した部分はしな
い部分より耐摩耗性が向上する。更にレーザ熱処理に当
っては、シリンダ全体からみて部分的な範囲でしかも極
く短時間にて行われるため、熱変形の心配がない。When the land portion 3 of the cylinder liner 1 is subjected to laser heat treatment in this manner, the wear resistance of that portion is improved. Incidentally, the normally used liner material is flake graphite cast iron containing high phosphorus and high titanium, and the wear resistance of the part that has undergone laser heat treatment is better than that of the part that has not. Furthermore, since the laser heat treatment is carried out in a limited area of the cylinder as a whole and in a very short time, there is no fear of thermal deformation.
又、前記のようにして、ランド部３の表面部だけをレー
ザ熱処理して耐摩耗性を向上できることから、通常の高
リン、高チタン人片状黒鉛鋳鉄の代りに、８０％以上パ
ーライト地の片状黒鉛鋳鉄をライナ材として用いること
ができ、これによって焼入れ性、加工性、鋳造性を高め
ることができる。更にライナ材としては、オーステンパ
ー処理した球状黒鉛鋳鉄を用いることができ、この場合
、熱亀裂を大幅に低減することができる。In addition, as described above, only the surface of the land portion 3 can be laser heat treated to improve wear resistance, so instead of the usual high phosphorus, high titanium flake graphite cast iron, more than 80% pearlite base can be used. Flake graphite cast iron can be used as the liner material, thereby improving hardenability, workability, and castability. Further, as the liner material, austempered spheroidal graphite cast iron can be used, and in this case, thermal cracking can be significantly reduced.
〔発明の効果」
以上説明したように本発明によれば、内表面に形成した
ウェーブ形状のランド部の表面部に対しレーザ熱処理を
施すようにしたので、熱変形を起すことなく耐摩耗性の
優れたシリンダライナを製造することができる、と言う
優れた効果を奏し得る。[Effects of the Invention] As explained above, according to the present invention, since laser heat treatment is applied to the surface of the wave-shaped land formed on the inner surface, wear resistance can be improved without causing thermal deformation. An excellent effect can be achieved in that an excellent cylinder liner can be manufactured.
第１図は本発明の方法により製造したシリンダライナの
要部を示す断面図である。
１はシリンダライナ、２はピストンリング、３はランド
部を示す。
特 許 出 願 人
石川島播磨重工業株式会社FIG. 1 is a sectional view showing the main parts of a cylinder liner manufactured by the method of the present invention. 1 is a cylinder liner, 2 is a piston ring, and 3 is a land portion. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd.
Claims (1)
ーザ熱処理を施すことを特徴とするシリンダライナの製
造方法。 ２）ライナ材として、８０％以上パーライト地の片状黒
鉛鋳鉄を用いた特許請求の範囲第１）項記載のシリンダ
ライナの製造方法。 ３）ライナ材として、オーステンパー処理した球状黒鉛
鋳鉄を用いた特許請求の範囲第１）項記載のシリンダラ
イナの製造方法。[Scope of Claims] 1) A method for manufacturing a cylinder liner, characterized in that a wave-shaped land portion formed on the inner surface is subjected to laser heat treatment. 2) A method for producing a cylinder liner according to claim 1, wherein flake graphite cast iron with a pearlite base of 80% or more is used as the liner material. 3) A method for manufacturing a cylinder liner according to claim 1, wherein austempered spheroidal graphite cast iron is used as the liner material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21885285A JPS6280363A (en) | 1985-10-01 | 1985-10-01 | Manufacturing method of cylinder liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21885285A JPS6280363A (en) | 1985-10-01 | 1985-10-01 | Manufacturing method of cylinder liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6280363A true JPS6280363A (en) | 1987-04-13 |
Family
ID=16726334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21885285A Pending JPS6280363A (en) | 1985-10-01 | 1985-10-01 | Manufacturing method of cylinder liner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6280363A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565923A (en) * | 1979-06-28 | 1981-01-22 | Komatsu Ltd | Working method for cylinder liner |
| JPS59212572A (en) * | 1983-05-14 | 1984-12-01 | Teikoku Piston Ring Co Ltd | Cylinder with inner periphery subjected treatment by laser hardening |
-
1985
- 1985-10-01 JP JP21885285A patent/JPS6280363A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565923A (en) * | 1979-06-28 | 1981-01-22 | Komatsu Ltd | Working method for cylinder liner |
| JPS59212572A (en) * | 1983-05-14 | 1984-12-01 | Teikoku Piston Ring Co Ltd | Cylinder with inner periphery subjected treatment by laser hardening |
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