JPH02217436A - Cylinder liner material having excellent wear resistance - Google Patents
Cylinder liner material having excellent wear resistanceInfo
- Publication number
- JPH02217436A JPH02217436A JP3703589A JP3703589A JPH02217436A JP H02217436 A JPH02217436 A JP H02217436A JP 3703589 A JP3703589 A JP 3703589A JP 3703589 A JP3703589 A JP 3703589A JP H02217436 A JPH02217436 A JP H02217436A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder liner
- hardness
- graphite
- wear resistance
- liner material
- 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
- 239000000463 material Substances 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910018487 Ni—Cr Inorganic materials 0.000 abstract description 3
- 238000009750 centrifugal casting Methods 0.000 abstract description 3
- 238000005087 graphitization Methods 0.000 abstract description 3
- 239000002054 inoculum Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 229910017082 Fe-Si Inorganic materials 0.000 abstract 1
- 229910017133 Fe—Si Inorganic materials 0.000 abstract 1
- 238000011081 inoculation Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229910001037 White iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
自動車等のピストンエンジンに使用されるシリンダーラ
イナーの材料に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to materials for cylinder liners used in piston engines such as automobiles.
（従来の技術）
エンジンの主要構成部品の一つであるシリンダーライナ
ーには、耐摩耗性が良いこと、熱伝導性が良いこと、強
度・剛性が大きいこと、ピストンとのなじみが良いこと
、耐食性が良いことが必要条件とされ、近年、低ＮＯｘ
対策や高出力化のため過酷な条件で使用される傾向にあ
る。このため、その耐久性を向上させる工夫が種々なさ
れている。(Prior technology) The cylinder liner, which is one of the main components of an engine, has the following characteristics: good wear resistance, good thermal conductivity, high strength and rigidity, good compatibility with the piston, and corrosion resistance. In recent years, low NOx
They tend to be used under harsh conditions due to countermeasures and high output. For this reason, various efforts have been made to improve its durability.
材質面では、一般にＰ−Ｃｒ系鋳鉄が主流で、その他に
、Ｎｉ５Ｃｒ、 Ｃｕ５Ｖ等を加えたもの、あるいは、
Ｎｂ、 Ｂを添加したものがある。ライナー摺動面には
、片状黒鉛を晶出させ、基地をパーライトとし、更にス
テダイトおよびセメンタイト炭化物を析出させ、摺動面
の硬度は、ＩＩＲＩ ９５〜１０１程度とされている。In terms of materials, P-Cr cast iron is generally the mainstream, and other materials include Ni5Cr, Cu5V, etc.
Some contain Nb and B. On the sliding surface of the liner, flaky graphite is crystallized, pearlite is used as a base, and steadite and cementite carbide are precipitated, and the hardness of the sliding surface is approximately IIRI 95 to 101.
又、シリンダーライナーには、ピストンリングとのなじ
みが問題となり、摺動面にホーニング加工を行なって、
一定の深さの溝を形成させて、エンジンの潤滑油消費量
（ＬＯＣ）の減少が図られている。一方、製造法として
は、普通鋳造法が主流であるが、金型遠心力鋳造法も開
発されている。In addition, the cylinder liner had a problem with fitting in with the piston ring, so the sliding surface was honed.
By forming grooves of a certain depth, an attempt is made to reduce the lubricating oil consumption (LOC) of the engine. On the other hand, the mainstream manufacturing method is the ordinary casting method, but a mold centrifugal casting method has also been developed.
（発明が解決しようとする課Ｈ）
従来の片状黒鉛鋳鉄を硬く、強くするために合金を多く
含有させた場合は、硬度が高くなっても・、片状黒鉛が
少なくなり、摺動部材としての機能が低下する傾向があ
った。(Problem H to be solved by the invention) When conventional flake graphite cast iron is made to contain a large amount of alloy to make it hard and strong, even if the hardness increases, the flake graphite content decreases and the sliding member There was a tendency for the function to decline.
本発明はかかる問題点に鑑みなされたもので、片状黒鉛
を晶出させながら、従来材よりも高硬度で、強度や剛性
が大きく、かつ耐摩耗性に優れたシリンダーライナー材
を提供することを目的とする。The present invention was made in view of the above problems, and an object of the present invention is to provide a cylinder liner material that crystallizes flaky graphite and has higher hardness, greater strength and rigidity, and superior wear resistance than conventional materials. With the goal.
（課題を解決するための手段）
上記目的を達成するためになされた本発明のシリンダー
ライナー材は、化学組成が重量％で、Ｃ：２．４〜３．
４％、 Ｎｉ：４，５〜１０．０％Ｓｉ ： ２．０
〜３．４％、 Ｃｒ： ５〜１０％Ｍｎ ： ０．
５〜１．５％、 Ｍｏ ： ０．４〜３．０％、残部
実質的にＦｅから成り、組織中に片状黒鉛が面積率で５
〜２０％晶出していることを発明の構成とするものであ
る。(Means for Solving the Problems) The cylinder liner material of the present invention, which has been made to achieve the above object, has a chemical composition of 2.4 to 3.0% by weight.
4%, Ni: 4.5-10.0%Si: 2.0
~3.4%, Cr: 5-10% Mn: 0.
5 to 1.5%, Mo: 0.4 to 3.0%, the remainder substantially consists of Fe, and flake graphite in the structure has an area ratio of 5.
The composition of the invention is that ~20% crystallization occurs.
（作 用）
本発明のシリンダーライナー材の化学組成は以下の理由
により限定される。組成単位は以下すべて重量％である
。(Function) The chemical composition of the cylinder liner material of the present invention is limited for the following reasons. All composition units below are weight %.
Ｃ：２．４〜３．４％
ＣはＣｒと結合してＣｒ炭化物を形成し、また後述のＳ
ｉ、 Ｎｉの黒鉛生成元素により微細な黒鉛となって晶
出する。２．４％未満ではＣｒ炭化物量が減少すると共
に黒鉛の晶出もほとんどなくなる。C: 2.4-3.4% C combines with Cr to form Cr carbide, and also contains S as described below.
It crystallizes into fine graphite due to graphite-forming elements such as i and Ni. If it is less than 2.4%, the amount of Cr carbide decreases and crystallization of graphite almost disappears.
一方、３．４％を越えると、本発明の場合Ｃｒ含有量が
１０％以下とされているので、過飽和のＣが高濃度Ｓｊ
、 Ｎｉのため多量に黒鉛化し、晶出黒鉛が過剰となっ
て耐摩耗性が劣化する。On the other hand, if it exceeds 3.4%, supersaturated C becomes a high concentration Sj
, Ni causes a large amount of graphitization, resulting in excessive crystallized graphite and deterioration of wear resistance.
Ｓｉ：２．０〜３．４％
Ｓｉは高クロム材質に黒鉛を晶出させるために必要で、
２．０％未満ではこの効果がほとんどなく、３．４％を
越えると黒鉛量が過多となり耐摩耗性を劣化させる。な
おＳｉの添加については、鋳込前のＳｉ量を上記限定範
囲よりも低目にしておき、鋳込時に接種を行い最終製品
の組成で上記範囲に入るように調整する方が黒鉛の晶出
に有効である。Si: 2.0-3.4% Si is necessary to crystallize graphite in high chromium materials.
If it is less than 2.0%, this effect will hardly be achieved, and if it exceeds 3.4%, the amount of graphite will be excessive and will deteriorate the wear resistance. Regarding the addition of Si, it is better to keep the amount of Si before casting lower than the above limited range, inoculate it during casting, and adjust the composition of the final product so that it falls within the above range to prevent graphite crystallization. It is effective for
Ｍｎ ： ０．５〜１．５％
Ｍｎは溶湯の脱酸のためにＳｉ と共に積極的に添加す
る。０．５％未満ではこの効果が不足し、１．５％を越
えると機械的性質特に靭性の劣化が著しくなる。Mn: 0.5-1.5% Mn is actively added together with Si to deoxidize the molten metal. If it is less than 0.5%, this effect is insufficient, and if it exceeds 1.5%, the deterioration of mechanical properties, particularly toughness, becomes significant.
Ｎｉ ： ４．５〜１０％
旧は基地組織の改良と黒鉛を晶出させるために積極的に
含有させるもので、４．５％未満では黒鉛の晶出が困難
となる。一方、１０％を越えるとＳｔの場合と同様、晶
出黒鉛が過多となる。また、残留オーステナイトが増加
して、耐肌荒性の面で問題となる。Ni: 4.5 to 10% In the old case, it was actively included to improve the matrix structure and crystallize graphite, but if it is less than 4.5%, it becomes difficult to crystallize graphite. On the other hand, if it exceeds 10%, as in the case of St, too much crystallized graphite will occur. In addition, retained austenite increases, which poses a problem in terms of skin roughness resistance.
Ｃｒ ： ５〜１０％
ＣｒはＣと結合してＣｒ炭化物を形成するが、５％未満
では該炭化物が少なく耐摩耗性の点で劣り、１０％を越
えると上記Ｎｉ、 Ｓｔの組成範囲では黒鉛が晶出困難
となる。Cr: 5 to 10% Cr combines with C to form Cr carbide, but if it is less than 5%, there are few carbides and the wear resistance is poor, and if it exceeds 10%, it will become graphite in the above Ni and St composition ranges. becomes difficult to crystallize.
Ｍｏ ： ０．４〜３．０％
Ｍｏは焼入焼戻し抵抗を高めると共に、炭化物中に入り
、炭化物硬度を高めると同時に焼戻軟化抵抗を向上させ
るのに有効である。その含有量が０．４％未満ではこの
ような効果が少なく、一方３．０％を越えると白銑化傾
向が強く黒鉛の晶出が困難となる。Mo: 0.4 to 3.0% Mo increases the quenching and tempering resistance, enters into the carbide, and is effective in increasing the hardness of the carbide and simultaneously improving the tempering and softening resistance. If the content is less than 0.4%, such effects will be small, while if it exceeds 3.0%, there will be a strong tendency to white iron, making it difficult to crystallize graphite.
本発明の鋳鉄材は以上の成分のばか残部実質的にＦｅで
形成される。尚、Ｓは成分を脆くするので少ない程望ま
しく、ｓ：ｏ、、ｏｅ％以下に止めておくのがよい。一
方、Ｐも一般的に材質を脆くするので少ない程望ましい
が、摺動耐摩耗材としては、Ｐ共晶組織を出すことによ
り、耐焼付性、耐摩耗性を向上させるため、０．８％程
度以下の含有が許容される。The cast iron material of the present invention is formed essentially of Fe, with the remainder of the above components being substantially Fe. Incidentally, since S makes the component brittle, it is preferable to have a small amount, and it is preferable to keep it at s:o,, oe% or less. On the other hand, P generally makes the material brittle, so it is desirable to have less P, but as a sliding wear-resistant material, it is about 0.8% because it improves seizure resistance and wear resistance by creating a P eutectic structure. The following contents are allowed.
一方、組織中の片状黒鉛量は面積％で５〜２０％に規制
される。５％未満では耐焼付性に劣り、方２０％を越え
ると、強度、ヤング率が低下し、ひいては剛性も低下す
る。On the other hand, the amount of flaky graphite in the structure is regulated to 5 to 20% by area. If it is less than 5%, the seizure resistance will be poor, and if it exceeds 20%, the strength and Young's modulus will decrease, and the rigidity will also decrease.
本発明の鋳鉄材は、前記化学組成の溶湯を普通鋳造法又
は金型遠心力鋳造法によりシリンダーライナーとして鋳
造する。その際、Ｆｅ−３ｉ等の接種材によって接種を
行ない、黒鉛化を促進するのがよい。The cast iron material of the present invention is produced by casting a molten metal having the above chemical composition into a cylinder liner by a normal casting method or a die centrifugal casting method. At that time, it is preferable to inoculate with an inoculant such as Fe-3i to promote graphitization.
（実施例）
〈実施例Ａ〉
（１）下記第１表の化学組成（重量％）の鋳鉄材を溶製
し、砂型鋳造を行なって試験素材を得た。(Example) <Example A> (1) A cast iron material having the chemical composition (wt%) shown in Table 1 below was melted and sand cast to obtain a test material.
尚、同表中Ｎα１〜３が本発明実施例、ＮＩＩＬ４が比
較例、阻５が従来例である。In the same table, Nα1 to Nα3 are examples of the present invention, Nα4 is a comparative example, and Nα5 is a conventional example.
第１表
（２） （１）の素材より試料を採取し、引張試験お
よび焼付性試験に供した。その結果を第１表に示す。Samples were taken from the materials shown in Table 1 (2) (1) and subjected to a tensile test and a seizure test. The results are shown in Table 1.
また、実施例中代表的成分であるＮα２および比較例Ｎ
α４について、光学顕微鏡による組織観察を行った。そ
の結果を随２については、第１図（１）および（２）に
、Ｎα４については第２図（１）および（２）に示す。In addition, Nα2, which is a typical component in Examples, and Comparative Example N
Regarding α4, the structure was observed using an optical microscope. The results are shown in FIG. 1 (1) and (2) for Aki 2, and in FIG. 2 (1) and (2) for Nα4.
各組織写真とも５０倍であり、図中（１）は腐食なし、
（２）は腐食後のものである。また、Ｎα２および漱５
について、熱的特性を調べた結果を第２表に併せて示す
。Each structure photograph is 50x magnified, and (1) in the figure shows no corrosion;
(2) is after corrosion. In addition, Nα2 and Sō5
Table 2 also shows the results of examining the thermal properties of
第２表中、焼付性試験は下記のファレックス試験により
、判定したものであり、Ｏは焼付発生有、×は無を意味
する。In Table 2, the seizure property test was determined by the Falex test described below, where O means seizure occurrence and x means no seizure occurrence.
■ ファレックス試験は、第３図に示すように、テスト
ビン１１の一端を回転機１２にシアービン１３によって
固定し、その他端を一定荷重Ｐの下で一対の■ブロック
１４．１４により挾み付けながらテストピース１１を回
転させ、回転に要したトルクにより焼付の有無、程度を
調べるものである。■ As shown in Fig. 3, the Farex test is carried out by fixing one end of the test bin 11 to the rotary machine 12 with a shear bin 13, and holding the other end between a pair of ■ blocks 14 and 14 under a constant load P. The test piece 11 is rotated, and the presence or absence and degree of seizure is examined based on the torque required for rotation.
■ 試験条件は下記の通りであった。■ The test conditions were as follows.
テストビン寸法−・−・・−φ６．５ Ｘ４０ｆ■ブロ
ック寸法・・・−・・φ１２（材質ＳＵＳ ４３０）テ
ストビン回転数・−３００ｒｐ１１
負荷荷重Ｐ−・−−−−−−−−−−３５ｋｇ ｆ試験
環境−・〜−−−−−−−−−−・−・−大気中無潤滑
第２表
（３）評価
従来例Ｎｏ、５は、片状黒鉛が多量に発生し、基地はパ
ーライトの軟らかい組織であり、硬度は１１ｓ３４ （
ｉｌｌｓ ９９）、ヤング率は９９００ｋｇｆ／ｍｍ”
であったが、実施例は、第１図のように片状黒鉛と、多
くのＣｒ炭化物、基地から成り、硬度も、１１！１７０
〜７５、ヤング率１８０００ ｋｇｆ／ａｍ”程度あっ
た。Test bin dimensions: -φ6.5 Test environment ----------------------In the atmosphere without lubrication Table 2 (3) Evaluation Conventional example No. 5 generates a large amount of flaky graphite, and the base is made of pearlite. It is a soft tissue with a hardness of 11s34 (
ills 99), Young's modulus is 9900 kgf/mm”
However, as shown in Fig. 1, the example consists of flaky graphite, many Cr carbides, and a base, and the hardness is 11!170.
~75, Young's modulus was approximately 18,000 kgf/am''.
また、焼付試験の結果には、従来例、実施例（Ｎａｌ〜
３）では、黒鉛が片状であり、面積が６％以上あるので
、焼付は生じなかった。しかし、比較例Ｎα４の如く、
黒鉛が粒状で面積が４％程度では、焼付が発生した。In addition, the results of the seizure test include conventional examples, examples (Nal to
In 3), the graphite was flaky and had an area of 6% or more, so no seizure occurred. However, as in Comparative Example Nα4,
Seizing occurred when the graphite was granular and had an area of about 4%.
また、引張強さは、実施例は従来例の２倍以上もあり、
ヤング率も１．８倍に達している。−方、熱伝導率は、
従来の片状黒鉛鋳鉄に比べてやや悪いが、引張強さ、ヤ
ング率が格段に大きいので、シリンダーライナーの厚さ
を薄くすることが可能となり、熱放散効果については何
ら問題がない。In addition, the tensile strength of the example is more than twice that of the conventional example,
Young's modulus also reached 1.8 times. - On the other hand, the thermal conductivity is
Although it is slightly worse than conventional flake graphite cast iron, it has much higher tensile strength and Young's modulus, so it is possible to reduce the thickness of the cylinder liner, and there is no problem with heat dissipation.
〈実施例Ｂ〉
（１）第１表Ｎα２の溶湯を遠心力金型鋳造により、外
径１１９ｍｍφ、内径１０４ｗａφ、肉厚７．５鴫、長
さ１８３５ｍｍの円筒素材を鋳造した。鋳造に際して接
種材としてＣａ−５ｉを１．２％（Ｓｉ分として０．６
％）取鍋および鋳込中に添加した。<Example B> (1) A cylindrical material having an outer diameter of 119 mmφ, an inner diameter of 104 mm, a wall thickness of 7.5 mm, and a length of 1835 mm was cast from the molten metal Nα2 in Table 1 by centrifugal force die casting. During casting, 1.2% Ca-5i (0.6% Si content) was added as an inoculum.
%) added during ladle and pouring.
（２） その後、該素材に５５０’ＣＸ １５ｔｌｒ
の歪除去熱処理を施した後、目標の寸法のシリンダーラ
イナーに加工した。硬度を測定したところＨｓ７１であ
った、また、組織観察したところ、基地中に片状黒鉛が
面積率で７．５％晶出していた。尚、硬度については、
機械加工の面からあまり高くできない場合は、歪取温度
を高くして低硬度にすることも可能である。(2) Then, apply 550'CX 15tlr to the material.
After applying strain removal heat treatment, it was processed into a cylinder liner with the target dimensions. When the hardness was measured, it was Hs71, and when the structure was observed, flaky graphite was crystallized in the matrix at an area ratio of 7.5%. Regarding hardness,
If the hardness cannot be increased too high from the viewpoint of machining, it is also possible to lower the hardness by increasing the strain relief temperature.
（３）該シリンダーライナーを組み込んだエンジンを用
いて試験運転したところ、耐久性の著しい向上が見られ
、期待通りの効果が得られた。(3) When a test run was conducted using an engine incorporating the cylinder liner, a remarkable improvement in durability was observed, and the expected effects were obtained.
（発明の効果）
以上説明した通り、本発明のシリンダーライナー材は特
定組成のニッケル・クロム鋳鉄材で形成したので、基地
中に片状黒鉛を晶出させると共に多量の高硬度Ｃｒ炭化
物を生成させることができ、硬度、引張強さおよびヤン
グ率を大きくすることができ、そのためシリンダーライ
ナーの厚さを薄くすることができ、しかも耐摩耗性に優
れる。また片状黒鉛晶出量を所定量に規定しているので
、優れた耐焼付を具備している。更に、ヤング率が大き
いため、機械加工時のチャックによる保持に対しても変
形が少なく、寸法精度の向上効果も期待することができ
る。(Effects of the Invention) As explained above, since the cylinder liner material of the present invention is formed from a nickel-chromium cast iron material with a specific composition, flaky graphite is crystallized in the matrix and a large amount of high hardness Cr carbide is generated. It is possible to increase the hardness, tensile strength and Young's modulus, and therefore the thickness of the cylinder liner can be reduced, and it also has excellent wear resistance. Furthermore, since the amount of flaky graphite crystallization is regulated to a predetermined amount, it has excellent seizure resistance. Furthermore, since the Young's modulus is large, there is little deformation when held by a chuck during machining, and an improvement in dimensional accuracy can be expected.
第１図（１）および（２）は実施例のシリンダーライナ
ー材の金属組織写真、第２図（１）および（２）は比較
例のニッケルクロム鋳鉄材の金属組繊写真、第３図はフ
ァレックス試験要領説明図を示す。
第３
図
２閏（１）Figures 1 (1) and (2) are photographs of the metal structure of the cylinder liner material of the example, Figures 2 (1) and (2) are photographs of the metal structure of the nickel chromium cast iron material of the comparative example, and Figure 3 is the metal structure photograph of the cylinder liner material of the example. An explanatory diagram of Falex test procedure is shown. 3 Figure 2 Leap (1)
Claims (1)
：２．０〜３．４％、Ｃｒ：５〜１０％Ｍｎ：０．５〜
１．５％、Ｍｏ：０．４〜３．０％、残部実質的にＦｅ
から成り、組織中に片状黒鉛が面積率で５〜２０％晶出
していることを特徴とする耐摩耗性に優れたシリンダー
ライナー材。(1) Chemical composition in weight%: C: 2.4-3.4%, Ni: 4.5-10.0%Si
:2.0~3.4%, Cr:5~10%Mn:0.5~
1.5%, Mo: 0.4-3.0%, remainder substantially Fe
A cylinder liner material with excellent wear resistance characterized by having flaky graphite crystallized in the structure in an area ratio of 5 to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3703589A JPH02217436A (en) | 1989-02-15 | 1989-02-15 | Cylinder liner material having excellent wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3703589A JPH02217436A (en) | 1989-02-15 | 1989-02-15 | Cylinder liner material having excellent wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02217436A true JPH02217436A (en) | 1990-08-30 |
Family
ID=12486367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3703589A Pending JPH02217436A (en) | 1989-02-15 | 1989-02-15 | Cylinder liner material having excellent wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02217436A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048732A (en) * | 2017-11-29 | 2018-05-18 | 马鞍山市恒特重工科技有限公司 | A kind of processing method of impact-resistant abrasion-proof lining board |
-
1989
- 1989-02-15 JP JP3703589A patent/JPH02217436A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048732A (en) * | 2017-11-29 | 2018-05-18 | 马鞍山市恒特重工科技有限公司 | A kind of processing method of impact-resistant abrasion-proof lining board |
| CN108048732B (en) * | 2017-11-29 | 2020-11-24 | 马鞍山市恒特重工科技有限公司 | Processing method of impact-resistant wear-resistant lining plate |
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