JPH01195258A - Austenitic cast iron having high vibration damping capacity - Google Patents
Austenitic cast iron having high vibration damping capacityInfo
- Publication number
- JPH01195258A JPH01195258A JP1996888A JP1996888A JPH01195258A JP H01195258 A JPH01195258 A JP H01195258A JP 1996888 A JP1996888 A JP 1996888A JP 1996888 A JP1996888 A JP 1996888A JP H01195258 A JPH01195258 A JP H01195258A
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- vibration damping
- high vibration
- austenitic cast
- damping capacity
- 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
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 28
- 238000013016 damping Methods 0.000 title claims abstract description 16
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract 1
- 230000001771 impaired effect Effects 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011978 dissolution method Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は振動減衰能が大きい鋳鉄に関するものであり、
詳しくは振動減衰能が大きい非磁性オーステナイト鋳鉄
に関するものであり、各種機器部材として使用される。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to cast iron with high vibration damping ability,
Specifically, it relates to non-magnetic austenitic cast iron that has a high vibration damping ability and is used as various equipment components.
（従来の技術）
従来のオーステナイト鋳鉄として片状黒鉛ニレジスト鋳
鉄があり、このものはＣ：３．０％以下、Ｓｉ： １
． Ｏへ９． ５％、Ｍｎ： １． ０〜 １．
５ ％、Ｎｌ： １３． ５〜１７． ５ ％、Ｃ
ｕ： ５． ５〜７． ５％、Ｃｒ：１．７５〜２．
５％からなる非磁性片状黒鉛オーステナイト鋳鉄である
（例えば、日本鋳物協会綱「改訂４版 鋳物便覧」 （
昭６１．１゜２０）丸善、ｒ’、７０１）。(Prior art) As a conventional austenitic cast iron, there is flaky graphite Niresist cast iron, which has C: 3.0% or less and Si: 1.
．． To O9. 5%, Mn: 1. 0~1.
5%, Nl: 13. 5-17. 5%, C
u: 5. 5-7. 5%, Cr: 1.75-2.
It is an austenitic cast iron consisting of 5% non-magnetic flaky graphite (for example, the Japan Foundry Association's ``Revised 4th Edition Foundry Handbook'' (
1986.1゜20) Maruzen, r', 701).
（発明が解決しようとする課Ｈ）
鋳鉄は一般に、他の鉄系材料に比較して振動減衰能が大
きいため、繰り返し衝撃や摩擦に起因する振動、回転運
動や往復運動から発生する騒音を防止するために各種機
器部材として使用されているが、従来のオーステナイト
鋳鉄は振動減衰能Ｑ−’が１０〜８０Ｘ１０−’程度と
小さいため、上記振動や騒音を下げることが困難である
という問題点がある。そこで、゛本発明はかかる問題点
を解消するためになされたもので、従来鋳鉄の非磁性を
損なうことなく、優れた振動減衰能を有するオーステナ
イト鋳鉄を提供するものである。(Problem H that the invention seeks to solve) Cast iron generally has a higher vibration damping ability than other iron-based materials, so it prevents vibrations caused by repeated impacts and friction, and noise generated from rotational motion and reciprocating motion. However, since conventional austenitic cast iron has a small vibration damping capacity Q-' of about 10 to 80 x 10-', it is difficult to reduce the vibration and noise mentioned above. be. Therefore, the present invention has been made to solve these problems, and provides an austenitic cast iron having excellent vibration damping ability without impairing the non-magnetism of conventional cast iron.
（課題を解決するための手段）
本発明は重量％で、Ｃ：３．０〜４．５％、Ｓｌ：
１．５〜３．０％、Ｍｎ： ３ 、０〜５．０％、Ｃ
ｕ： ２．５〜４．５％、旧：８．５〜２０．５％、Ｃ
ｒ：１．５％以下、残部がＦｅおよび不可避的不純物よ
りなり、ＭｎとＣｕとの含有合計量が５．５〜７゜５％
で、かつ片状黒鉛組織を有する振動減衰能が大きい非磁
性オーステナイト鋳鉄である。(Means for Solving the Problems) The present invention is based on weight percent: C: 3.0 to 4.5%, Sl:
1.5-3.0%, Mn: 3, 0-5.0%, C
u: 2.5-4.5%, old: 8.5-20.5%, C
r: 1.5% or less, the remainder consists of Fe and unavoidable impurities, and the total content of Mn and Cu is 5.5 to 7.5%
It is a non-magnetic austenitic cast iron with a flaky graphite structure and a high vibration damping ability.
次に本発明において各成分組成を限定した理由について
説明する。Next, the reason for limiting the composition of each component in the present invention will be explained.
（１）Ｃ
鋳鉄においてはＳｉとともに鋳鉄の振動減衰能を向上さ
せる黒鉛の析出を促進する元素であり、溶解性、ｎ造作
を考慮すると３．０％以上必要である。しかし、４．５
％以上添加すると溶解温度が異常に高くなり特殊な溶解
技術を必要とするため３．０〜４．５％に限定した。(1) C In cast iron, C is an element that, together with Si, promotes the precipitation of graphite, which improves the vibration damping ability of cast iron.Considering solubility and structure, C is an element of 3.0% or more. However, 4.5
If more than 5% is added, the melting temperature becomes abnormally high and special melting techniques are required, so it was limited to 3.0 to 4.5%.
（２） ＳＩ
上記したＣとともに強方な黒鉛化促進元素であり、振動
減衰能を向上させる片状黒鉛を大きく成長させるなめに
は１．５％以上必要であり、またＣが３．０％以上にな
ると基地中の８１濃度が高まり、材質が脆弱になるため
１，５〜３．０％に限定した。(2) SI Along with the above-mentioned C, it is a strong graphitization promoting element, and 1.5% or more is required to grow flaky graphite that improves vibration damping ability, and C is 3.0%. If the concentration exceeds 81%, the concentration of 81 in the base will increase and the material will become brittle, so it was limited to 1.5% to 3.0%.
（３） ＭｎおよびＣｕ
ＭｎおよびＣｕは高価な旧の代用として複合で５゜５〜
７．５％の範囲で置換可能であり、１４ｎは５゜０％を
超えると鋳造欠陥を発生しやすくなるため、その上限を
５．０％とし、Ｃｕは４．５％を超えるとオーステナイ
ト基地中にに異常組織を発生させ易くなり、特殊な溶解
方法を必要とするため、その上限を４，５％とし、下記
表よりＭｎおよびＣｕの複合でそれぞれ３．０％以下、
２．５％以下になると磁性を生じさせるため、それぞれ
の下限を３゜０％および２．５％に限定した。(3) Mn and Cu Mn and Cu are used in combination as a substitute for expensive old ones.
14n can be replaced within a range of 7.5%, and since casting defects are likely to occur when 14n exceeds 5.0%, the upper limit is set at 5.0%, and when Cu exceeds 4.5%, it becomes an austenite matrix. Since abnormal tissues are likely to occur in the inside and a special dissolution method is required, the upper limit is set at 4.5%, and from the table below, the combined amount of Mn and Cu is 3.0% or less, respectively.
Since magnetism occurs when the content is less than 2.5%, the respective lower limits were limited to 3.0% and 2.5%.
＜４）Ｎｉ
旧はオーステナイト化促進元素であり、鋳鉄の基地を完
全にオーステナイトにするためには８゜５％以上必要で
あり、２０．５％を超えるとオーステナイトに磁性を生
じさせるため８．５〜２０゜５％に限定した。<4) Ni is an element that promotes austenitization, and in order to completely transform the base of cast iron into austenite, 8.5% or more is required, and if it exceeds 20.5%, it causes magnetism in austenite. It was limited to 5% to 20°.
（５） Ｃｒ
Ｃｒはオーステナイト化促進元素ではあるが、その含有
量が１．５％を超えると多量の炭化物を析出し、オース
テナイト鋳鉄に磁性を生じさせるため、その上限を１．
５％とした。(5) Cr Although Cr is an element that promotes austenitization, if its content exceeds 1.5%, it precipitates a large amount of carbides and causes magnetism in austenitic cast iron, so the upper limit is set to 1.5%.
It was set at 5%.
（実施例） 以下、本発明の実施例について述べる。(Example) Examples of the present invention will be described below.
Ｃ：３．０〜４．５％、Ｓｔ： １．５〜３．０％、！
ｎ： ３． ０〜 ５． ０ ％ 、 Ｃ
ｕ 二 ２． ５ 〜４． ５ ％ 、Ｎｉ
：８．５〜２０．５％、Ｃｒ：１．５％以下、残部がＦ
ｅおよび不可避的不純物よりなり、ＭｎとＣｕとの含有
合計量が５．５へ７．５％となるように溶湯溶製、溶湯
処理を施した後、Ｃｏ２鋳型に鋳込み、１インチＹブロ
ックを採取し、成分組成、振動減衰能および磁性を調査
し、その結果を比較鋳鉄例とともに下記表に示す、比較
鋳鉄は一般の片状黒鉛オーステナイト鋳鉄である。C: 3.0-4.5%, St: 1.5-3.0%,!
n: 3. 0-5. 0%, C
u two 2. 5-4. 5%, Ni
: 8.5 to 20.5%, Cr: 1.5% or less, balance is F
After melting and treating the molten metal so that the total content of Mn and Cu is 5.5% to 7.5%, it is poured into a Co2 mold and a 1 inch Y block is formed. The composition, vibration damping ability, and magnetism were investigated, and the results are shown in the table below along with examples of comparative cast iron.The comparative cast iron is general flake graphite austenitic cast iron.
なお添付図面は本発明鋳鉄（供試材、１）のｍ微鏡写真
（３％ナイタール腐食１倍率１００倍）であり、オース
テナイト基地組織に片状黒鉛が晶出している。The attached drawing is a microscopic photograph (3% nital corrosion, 1 magnification: 100 times) of the cast iron of the present invention (sample material 1), in which flaky graphite is crystallized in the austenite matrix structure.
本発明は以上の通りであって下記表からも明らかなよう
に、本発明鋳鉄は比較ａ鉄に比べ、極めて優れた振動減
衰能を有し、しかも非磁性である。The present invention is as described above, and as is clear from the table below, the cast iron of the present invention has an extremely superior vibration damping ability compared to the comparison A iron, and is also non-magnetic.
（発明の効果）
本発明鋳鉄は優れた振動減衰能と非磁性とをイ「するの
で、広く各種機器部材として適用でき、特に繰り返し衝
撃機構や回転体を有するｆｉ器部材として用いるときは
その優れた振動減衰能によって振動を減少でき、また疲
労破壊の防止にも没立つとともに、騒音の発生抑制ある
いは騒音の吸収にきわめて優れた効果を発揮するもので
機器材料として優れた材質である。(Effects of the Invention) The cast iron of the present invention has excellent vibration damping ability and non-magnetism, so it can be widely applied as various equipment components, and especially when used as a repetitive impact mechanism or a FI device component having a rotating body, it has excellent vibration damping ability and non-magnetism. It is an excellent material for equipment because it can reduce vibrations due to its high vibration damping ability, and it also helps prevent fatigue failure. It also exhibits an extremely excellent effect in suppressing noise generation and absorbing noise.
図面は本発明鋳鉄の金属組織を示す顕微鏡写真である。 The drawing is a micrograph showing the metal structure of the cast iron of the present invention.
Claims (1)
．０％、Ｍｎ：３．０〜５．０％、Ｃｕ：２．５〜４．
５％、Ｎｉ：８．５〜２０．５％、Ｃｒ：１．５％以下
、残部がＦｅおよび不可避的不純物よりなり、ＭｎとＣ
ｕとの含有合計量が５．５〜７．５％で、かつ片状黒鉛
組織を有することを特徴とする振動減衰能が大きいオー
ステナイト鋳鉄。In weight%, C: 3.0-4.5%, Si: 1.5-3
．． 0%, Mn: 3.0-5.0%, Cu: 2.5-4.
5%, Ni: 8.5-20.5%, Cr: 1.5% or less, the balance consists of Fe and unavoidable impurities, Mn and C
An austenitic cast iron having a large vibration damping ability, characterized by having a total content of 5.5 to 7.5% of U and a flaky graphite structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996888A JPH01195258A (en) | 1988-01-29 | 1988-01-29 | Austenitic cast iron having high vibration damping capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996888A JPH01195258A (en) | 1988-01-29 | 1988-01-29 | Austenitic cast iron having high vibration damping capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01195258A true JPH01195258A (en) | 1989-08-07 |
Family
ID=12013989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1996888A Pending JPH01195258A (en) | 1988-01-29 | 1988-01-29 | Austenitic cast iron having high vibration damping capacity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01195258A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465320C (en) * | 2007-07-20 | 2009-03-04 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN103194661A (en) * | 2012-01-05 | 2013-07-10 | Lg电子株式会社 | Nonmagnetic cast iron and reciprocating compressor applied the same |
| CN103397254A (en) * | 2013-08-08 | 2013-11-20 | 常熟市东方特种金属材料厂 | Compound-type vibration and noise reduction function alloy |
-
1988
- 1988-01-29 JP JP1996888A patent/JPH01195258A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465320C (en) * | 2007-07-20 | 2009-03-04 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN103194661A (en) * | 2012-01-05 | 2013-07-10 | Lg电子株式会社 | Nonmagnetic cast iron and reciprocating compressor applied the same |
| CN103194661B (en) * | 2012-01-05 | 2015-04-15 | Lg电子株式会社 | Nonmagnetic cast iron and reciprocating compressor applied the same |
| CN103397254A (en) * | 2013-08-08 | 2013-11-20 | 常熟市东方特种金属材料厂 | Compound-type vibration and noise reduction function alloy |
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