JPS5944383B2 - Shindougensuigoukin - Google Patents
ShindougensuigoukinInfo
- Publication number
- JPS5944383B2 JPS5944383B2 JP50149444A JP14944475A JPS5944383B2 JP S5944383 B2 JPS5944383 B2 JP S5944383B2 JP 50149444 A JP50149444 A JP 50149444A JP 14944475 A JP14944475 A JP 14944475A JP S5944383 B2 JPS5944383 B2 JP S5944383B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration damping
- alloy
- corrosion resistance
- damping ability
- ability
- 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.)
- Expired
Links
Landscapes
- Heat Treatment Of Steel (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】
本発明はＣｒ −Ｍ ｏ −Ｎ ｉ −Ｆ ｅ系の振動
減衰合金に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration damping alloy based on Cr-Mo-Ni-Fe.
従来、火力発電用蒸気タービンなどの低圧タービン翼と
してＣｒ −Ｍ ｏ −Ｎ ｉ −Ｆ ｅ系の振動減衰
合金が、翼の振動などによる騒音を防止するために用い
られていた。Conventionally, Cr-Mo-Ni-Fe-based vibration damping alloys have been used as low-pressure turbine blades such as steam turbines for thermal power generation in order to prevent noise caused by vibration of the blades.
またこのＣｒ −Ｍ ｏ −Ｎ １−Ｆｅ系合金は耐食
性にすぐれ、高温での振動減衰能の低下のない、機械的
強度の大きいなどのすぐれた効果を有するもので、コン
プレッサーの弁座など機械的騒音の発生する部品の部材
としても用いることができた。In addition, this Cr-Mo-N1-Fe alloy has excellent corrosion resistance, no loss of vibration damping ability at high temperatures, and high mechanical strength, making it suitable for mechanical applications such as compressor valve seats. It could also be used as a component for parts that generate noise.
しかし、従来のＣｒ−Ｍｏ −Ｎ ｉ −Ｆ ｅ系の振
動減衰合金はＭｎ−Ｃｕ系振動減衰合金あるいはＣｒ−
Ａｌ−Ｆｅ系振動減衰合金と比較し、その振動減衰能が
極めて劣るものであり、耐食性などにすぐれた点がある
にもかかわらず、実用性に欠けるなどの欠点があった。However, the conventional Cr-Mo-Ni-Fe-based vibration damping alloy is replaced by Mn-Cu-based vibration damping alloy or Cr-Mo-Ni-Fe based vibration damping alloy.
Compared to Al-Fe based vibration damping alloys, its vibration damping ability is extremely inferior, and although it has excellent corrosion resistance etc., it has drawbacks such as lack of practicality.
本発明はＣｒ −Ｍｏ −Ｎ ｉ −Ｆ ｅ系振動減衰
合金においてＣの量を０．１２重量係以下に限定するこ
とにより耐食性、高温での振動減衰能の安定性、機械的
強度などを低下させずに振動減衰能を極めて高くし、さ
らに塑性加工性をも向上させた振動減衰合金を提供する
ことを目的とする。The present invention reduces corrosion resistance, stability of vibration damping ability at high temperatures, mechanical strength, etc. in a Cr-Mo-Ni-Fe vibration damping alloy by limiting the amount of C to 0.12 weight coefficient or less. It is an object of the present invention to provide a vibration damping alloy that has extremely high vibration damping ability without causing any damage, and also has improved plastic workability.
以下本発明について実施例と共に詳細に説明する。The present invention will be described in detail below along with examples.
本発明の振動減衰合金は、重量比で８〜３０飴のＣｒ（
クロム）、０．５〜４ ％のＭｏ（モリデブン）、０．
２５〜１．５係のＮ ｉ にッケル）、０．１２係以下
のＣ（炭素）、残部Ｆｅ（鉄）および附随的不純物から
なる組成を有するもので、上述した各組成成分の限定は
次のような理由による。The vibration damping alloy of the present invention has a weight ratio of 8 to 30 Cr (
chromium), 0.5-4% Mo (molydeben), 0.
It has a composition consisting of Ni (nickel) with a coefficient of 25 to 1.5, C (carbon) with a coefficient of 0.12 or less, the balance Fe (iron), and incidental impurities, and the limitations of each composition component described above are as follows. Due to reasons such as.
Ｃｒは振動減衰能および耐食性を向上させるための成分
であるが８重量係未満であっては耐食性が充分得られず
、３０重量係を超えては耐食性は向上するものの振動減
衰能が低下し実用性がなくなる。Cr is a component for improving vibration damping ability and corrosion resistance, but if it is less than 8 weight factor, sufficient corrosion resistance cannot be obtained, and if it exceeds 30 weight factor, although corrosion resistance is improved, vibration damping ability is reduced and it is not suitable for practical use. Gender disappears.
ＭｏはＣｒと共に振動減衰能、耐食性を向上させる必要
成分であるが、０．５重量係未満ではその効果が得られ
ず、４重量係を超えては振動減衰能および塑性加工性が
低下する。Mo, together with Cr, is a necessary component that improves vibration damping ability and corrosion resistance. However, if the weight factor is less than 0.5, the effect cannot be obtained, and if the weight factor exceeds 4, the vibration damping ability and plastic workability decrease.
Ｎｉは耐食性を大巾に向上させるためのものであるが、
その混入で振動減衰能は低下する。Ni is used to greatly improve corrosion resistance, but
Vibration damping ability decreases due to its contamination.
しかし、Ｎｉが０．２５〜１．５重量係の範囲であって
は振動減衰能を比較的低下させることなく耐食性を上げ
ることができる。However, if Ni is in the range of 0.25 to 1.5 weight coefficient, corrosion resistance can be improved without relatively reducing vibration damping ability.
そしてＣはその混入量を最少にすればするほど振動減衰
能が向上するが、０．１２重量係を超えては急激に振動
減衰能が低下する。The vibration damping ability improves as the amount of C mixed in is minimized, but the vibration damping ability rapidly decreases when the weight coefficient exceeds 0.12.
なお、本発明による振動減衰合金組成内にＳｉあるいは
Ｍｎなどの脱酸、脱硫剤など適当量添加してもその効果
は変わらず、附随的不純物としてＰ（りん）などの他の
元素をも含み得るが、その含量は０．５重量製以下であ
ることが望ましい。Note that even if an appropriate amount of deoxidizing and desulfurizing agents such as Si or Mn are added to the vibration damping alloy composition according to the present invention, the effect remains the same, and it also contains other elements such as P (phosphorus) as incidental impurities. However, it is desirable that the content is 0.5 weight or less.
本発明の振動減衰合金は、所定の組成比となるように各
金属（合金でもよい）を混合して真空溶解し、それを鋳
造して鍛造し、圧延を行なって適宜厚さの板体を得てこ
の板体を７００〜１２００°Ｃの温度で熱処理（焼きな
まし熱処理）を施すことによって製造できる。The vibration damping alloy of the present invention is produced by mixing metals (or alloys) to a predetermined composition ratio, melting the mixture in vacuum, casting and forging, and rolling it into a plate of an appropriate thickness. It can be manufactured by subjecting this plate to heat treatment (annealing heat treatment) at a temperature of 700 to 1200°C.
なお上記熱処理は組成によっても異なるが８００〜１１
００℃の温度で１時間（Ｈ）程度が好ましく、たとえば
１１００℃で熱処理を施した場合は、７００℃の場合に
比較し、振動減衰能が約４倍程度高くなる。Although the above heat treatment varies depending on the composition,
It is preferable to apply heat treatment at a temperature of 00°C for about 1 hour (H). For example, when heat treatment is performed at 1100°C, the vibration damping ability is about 4 times higher than that at 700°C.
次に本発明の実施例について具体的に比較例をも示して
説明する。Next, examples of the present invention will be specifically described with reference to comparative examples.
第１表はＣｒ 、Ｍｏ 、Ｎｉ 、Ｃ，残Ｆｅの各組成
比を変えて板片を製作し、その表に示す熱処理温度で熱
処理を施したものについて各々合金の振動減衰能および
腐食減量を測定した値について示しである。Table 1 shows the vibration damping ability and corrosion loss of the alloys made by fabricating plates with different composition ratios of Cr, Mo, Ni, C, and residual Fe, and heat-treated at the heat treatment temperatures shown in the table. The measured values are shown below.
第１表で示す振動減衰能の測定は、巾１０ｍｔｔｔ、長
さ１００ｍｍ、厚さ１ｍｍの各板片について所定の曲げ
振動を与えて対数減衰率を室温で一定の振幅を与えて測
定し、第１表中比較例１０で示す冷間圧延材で、ＪＩＳ
で５ＵＳ４０３と呼ばれる合金の対数減衰率を１とし、
相対値（δ／１５ ）として表示した（ただし、δ。The vibration damping capacity shown in Table 1 was measured by applying a predetermined bending vibration to each plate piece with a width of 10 mttt, a length of 100 mm, and a thickness of 1 mm, and measuring the logarithmic damping rate at room temperature with a constant amplitude. The cold rolled material shown in Comparative Example 10 in Table 1, JIS
Assuming that the logarithmic decay rate of the alloy called 5US403 is 1,
Expressed as relative value (δ/15) (where δ.
はＳＵＳ ４０３の対数減衰率）。is the logarithmic decay rate of SUS 403).
一般にこの相対値は振動減衰能が１５以下であっては、
その防振効果は顕著に得られたとは云えず、１６以上の
値が必要である。Generally, this relative value is 15 or less when the vibration damping ability is 15 or less.
It cannot be said that the vibration damping effect was significantly obtained, and a value of 16 or more is required.
第１表に示す腐食減量の測定は、たて２０ｍｔｎ、よこ
３０朋、厚さ１ｍｍの大きさの各組成の板片について、
１０％ＮａＣ１水溶液中に、１０分間浸漬させ、引き上
げ後１０分間の空気中放置の工程を２０回操り返して行
なって後の重量変化ｒｖ／ｃｒ！ｔについて評価した値
である。The corrosion weight loss shown in Table 1 was measured for plate pieces of each composition with a size of 20 mtn in length, 30 mtn in width, and 1 mm in thickness.
The process of immersing in a 10% NaCl aqueous solution for 10 minutes, lifting it and leaving it in the air for 10 minutes was repeated 20 times, and the weight change after that was rv/cr! This is the value evaluated for t.
第１表から明らかなように、本発明による振動減衰合金
はすぐれた振動減衰能および耐食性を有することがわか
る。As is clear from Table 1, the vibration damping alloy according to the present invention has excellent vibration damping ability and corrosion resistance.
すなわち、上記合金組成範囲を外ずれるものであっては
、たとえば比較例１゜２．８に示したような、振動減衰
能はすぐれているが、耐食性に関して劣るか、あるいは
比較例３乃至７および９のように耐食性は良いが振動減
衰能に劣るかのいずれかであり実用性のとぼしいものと
なる。In other words, if the alloy composition is outside the above range, the vibration damping ability is excellent, but the corrosion resistance is poor, as shown in Comparative Example 1. As shown in No. 9, the corrosion resistance is good, but the vibration damping ability is poor, and the practicality is poor.
また本発明の振動減衰合金は、使用時での温度特性にす
ぐれ、室温から３００°Ｃ程度の高温に至ってもその振
動減衰能は第１図に示すように、あまり低下せずさらに
引張り強さに関しても約５０ｋｇ ／ｍ＋ｔと大きく構
造用機構部材として充分利用できるすぐれたものである
。In addition, the vibration damping alloy of the present invention has excellent temperature characteristics during use, and as shown in Figure 1, its vibration damping ability does not decrease much even when the temperature rises from room temperature to a high temperature of about 300°C, and the tensile strength increases. It has a large weight of about 50 kg/m+t and is excellent enough to be used as a structural mechanical member.
なお第１図に示す特性は実施例１に係る合金の場合を示
したが、他の実施例に係る合金であれば同様の特性を示
す。Note that although the characteristics shown in FIG. 1 are for the alloy according to Example 1, alloys according to other examples will exhibit similar characteristics.
また引張り強さはたとえば、実施例２に係る合金につい
て示する５ １．３ ｋｇ／ｍＡであった。Further, the tensile strength was, for example, 51.3 kg/mA as shown for the alloy according to Example 2.
本発明の振動減衰合金は、切削加工性を向上する目的で
、Ｓ（硫黄）Ｐｂ（鉛）、Ｃａ（カルシウム）などを、
また耐食性をさらに向上させる目的でＣｕ（銅）、Ｔｉ
（チタン）を少量添加含有させても効果は損なわれない
。The vibration damping alloy of the present invention contains S (sulfur), Pb (lead), Ca (calcium), etc. for the purpose of improving machinability.
In addition, for the purpose of further improving corrosion resistance, Cu (copper), Ti
Even if a small amount of (titanium) is added and contained, the effect is not impaired.
第１図は本発明の実施例による合金の特性図である。 FIG. 1 is a characteristic diagram of an alloy according to an embodiment of the present invention.
Claims (1)
Ｆｅおよび附随的不純物からなることを特徴とする振動
減衰合金。[Claims] 1. Weight ratio: 8 to 30% Cr, 0.5 to 4% Mo. A vibration damping alloy comprising 0.25 to 1.5Ni, 0.12% or less of 01 balance Fe, and incidental impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50149444A JPS5944383B2 (en) | 1975-12-17 | 1975-12-17 | Shindougensuigoukin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50149444A JPS5944383B2 (en) | 1975-12-17 | 1975-12-17 | Shindougensuigoukin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5273118A JPS5273118A (en) | 1977-06-18 |
| JPS5944383B2 true JPS5944383B2 (en) | 1984-10-29 |
Family
ID=15475239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50149444A Expired JPS5944383B2 (en) | 1975-12-17 | 1975-12-17 | Shindougensuigoukin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5944383B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5739297B2 (en) * | 2011-09-30 | 2015-06-24 | 株式会社ディスコ | Stainless steel |
| JP6370276B2 (en) * | 2015-08-17 | 2018-08-08 | 日新製鋼株式会社 | High Al content damping ferritic stainless steel material and manufacturing method |
| JP6370275B2 (en) * | 2015-08-17 | 2018-08-08 | 日新製鋼株式会社 | Damping ferritic stainless steel material and manufacturing method |
| CN108950429B (en) * | 2018-08-15 | 2019-10-15 | 四川大学 | The Fe-Cr-Mo based alloy and its preparation method and application that antidamping decays under a kind of prestressing force effect |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263113U (en) * | 1975-11-05 | 1977-05-10 |
-
1975
- 1975-12-17 JP JP50149444A patent/JPS5944383B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5273118A (en) | 1977-06-18 |
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