JPH01129949A - Manufacture of high damping magnetic alloy - Google Patents
Manufacture of high damping magnetic alloyInfo
- Publication number
- JPH01129949A JPH01129949A JP28691187A JP28691187A JPH01129949A JP H01129949 A JPH01129949 A JP H01129949A JP 28691187 A JP28691187 A JP 28691187A JP 28691187 A JP28691187 A JP 28691187A JP H01129949 A JPH01129949 A JP H01129949A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- graphite
- alloy
- vibration
- added
- 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.)
- Granted
Links
- 229910001004 magnetic alloy Inorganic materials 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000013016 damping Methods 0.000 title description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 23
- 239000010439 graphite Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 229910000676 Si alloy Inorganic materials 0.000 claims description 6
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 abstract description 16
- 239000000956 alloy Substances 0.000 abstract description 16
- 229910017082 Fe-Si Inorganic materials 0.000 abstract description 6
- 229910017133 Fe—Si Inorganic materials 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000011863 silicon-based powder Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 18
- 239000000696 magnetic material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000007639 printing Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
防振性の優れた軟質磁性合金の開発に関し、防振性の一
層の向上を目的とし、
グラファイト粉を鉄・硅素合金よりなる結晶粒界に析出
せしめ、該グラファイトの粘弾性効果を利用して防振を
行う防振磁性合金の製法として、前記のグラファイト粉
を添加した鉄・硅素合金粉に更に銅粉を加え、混合した
後にプレス成形を行い、該成形体を焼結することにより
防振磁性合金を製造する。[Detailed Description of the Invention] [Summary] Regarding the development of a soft magnetic alloy with excellent vibration damping properties, for the purpose of further improving the vibration damping properties, graphite powder is precipitated at the grain boundaries of an iron-silicon alloy. As a method for producing a vibration-isolating magnetic alloy that uses the viscoelastic effect of graphite to provide vibration isolation, copper powder is further added to the above-mentioned graphite powder-added iron-silicon alloy powder, mixed, and then press-formed. A vibration-proof magnetic alloy is manufactured by sintering the compact.
本発明は防振性を向上した軟質磁性合金の製造方法に関
する。The present invention relates to a method for manufacturing a soft magnetic alloy with improved vibration damping properties.
情報処理装置のうち、ＯＡｉ器（オフィス・オートメイ
ション機器）は環境保全のために騒音の発生を極力抑制
することが必要であるが、ＯＡ機器の中には軟質磁性材
料を使用しており、これにより騒音を発生している機器
がある。Among information processing equipment, OAi equipment (office automation equipment) must suppress noise generation as much as possible for environmental protection, but some OA equipment uses soft magnetic materials. There are devices that generate noise due to this.
その代表的なもあとしてワイヤドツトプリンタを挙げる
ことができる。Wire dot printers can be cited as a typical example.
このプリンタの構成は記録紙を保持しながら紙送りして
いるプラテンにインクリボンを介し、信号に応じて印字
ワイヤを衝撃することにより記録紙に情報の印字を行う
ものである。The configuration of this printer is to print information on recording paper by impacting a printing wire in response to a signal via an ink ribbon to a platen that feeds the recording paper while holding it.
こ＼で、信号に応じてアーマチュアが印字ワイ、ヤを備
えたハンマを磁気吸引する際に騒音が発生する。Noise is generated when the armature magnetically attracts the hammer equipped with the printing wire in response to the signal.
そこで、衝撃音を緩和する方法として印字ワイヤを駆動
し、騒音を発生するアーマチュアを防振性能の優れた磁
性合金を用いて形成することが必要となる。Therefore, as a method of alleviating the impact noise, it is necessary to form the armature that drives the printing wire and generates the noise using a magnetic alloy with excellent vibration-proofing performance.
本発明はこのような防振効果すなわち吸収エネルギーの
減衰率の大きな軟質磁性合金の製法に関するものである
。The present invention relates to a method for manufacturing a soft magnetic alloy having such a vibration-proofing effect, that is, a large damping rate of absorbed energy.
発明者は優れた防振性能をもつ軟質磁性材料として硅素
（Ｓｉ）含有量が１〜６．５重量％の鉄・硅素（Ｆｅ−
３ｉ）合金粉末に１〜１５重量％の黒鉛（グラファイト
）を加えてなる防振磁性合金について既に出願を行って
いる。（特願昭６１−２２０９３５．昭和６１年９月２
０日出願）
この出願の要旨は優れた軟質磁性特性を備えているＦｅ
−５ｉ合金（Ｓｔ含有量が１〜６．５重量％）に防振性
を付与する方法としてグラファイトを１〜１５重量％添
加して焼結することによりグラファイトをＦｅ−５ｉ合
金の結晶粒界に析出せしめ、焼結体界面とグラファイト
との間で辷り変形（粘弾性効果）を生じさせることによ
り防振性をもたせるものである。The inventor developed iron-silicon (Fe-Si) with a silicon (Si) content of 1 to 6.5% by weight as a soft magnetic material with excellent anti-vibration performance.
3i) An application has already been filed for a vibration-proof magnetic alloy made by adding 1 to 15% by weight of graphite to alloy powder. (Patent application 1986-220935.September 2, 1986
(filed on day 0) The gist of this application is that Fe has excellent soft magnetic properties.
-5i alloy (St content: 1 to 6.5 wt%) is added with 1 to 15 wt% of graphite and sintered to add graphite to the grain boundaries of Fe-5i alloy. It precipitates in the sintered body and creates a sliding deformation (viscoelastic effect) between the interface of the sintered body and the graphite, thereby imparting vibration damping properties.
こ＼で、グラファイトの添加量を１〜１５％とする理由
は、添加量が１％未満の場合は粘弾性効果を生じないか
らであり、また１５％を超えると防振効果は向上するも
の＼、磁気特性が著しく低下して実用的でないことによ
る。The reason why the amount of graphite added is 1 to 15% is that if the amount added is less than 1%, no viscoelastic effect will occur, and if it exceeds 15%, the vibration damping effect will improve. ＼, because the magnetic properties are significantly deteriorated and it is not practical.
そして、か＼る防振磁性材料を用いてワイヤドツトプリ
ンタの印字ワイヤを駆動するアーマチュアを形成するこ
とにより騒音の発生を相当程度抑制することが可能とな
った。By forming an armature for driving the printing wire of a wire dot printer using such a vibration-proof magnetic material, it has become possible to suppress the generation of noise to a considerable extent.
こ＼で、発明者が提案しているＦｅ−３ｉ−Ｃ（グラフ
ァイト）系焼結合金の構成はＦｅ−５ｉからなる焼結体
の結晶粒界にグラファイト層が介在するものであるが、
Ｘ線回折の結果から現実にはＦｅ−５ｉ焼結合金の中に
グラファイトがかなり含まれており、これによりＦｅ−
５ｉ軟質磁性体の磁気特性が劣化していることが判った
。Here, the composition of the Fe-3i-C (graphite) based sintered alloy proposed by the inventor is one in which a graphite layer is interposed at the grain boundaries of a sintered body made of Fe-5i.
The results of X-ray diffraction show that the Fe-5i sintered alloy actually contains a considerable amount of graphite.
It was found that the magnetic properties of the 5i soft magnetic material were degraded.
すなわち、高い飽和磁束密度をもち低い保磁力をもつ軟
質磁性材料の特性が損なわれている。In other words, the characteristics of the soft magnetic material, which has a high saturation magnetic flux density and a low coercive force, are impaired.
そのため、Ｐｅ＝Ｓｉ焼結合金中のグラファイト含有を
抑制することが必要であった。Therefore, it was necessary to suppress the graphite content in the Pe=Si sintered alloy.
発明者が提案しているＦｅ−５ｉ−Ｃ系焼結合金は防振
性の優れた軟質磁性材料であるが、この特徴を充分に発
揮させるにはＦｅ−５ｉ焼結合金の中に含まれているグ
ラファイトの量を極力減らすことが必要であり、この対
策が求められていた。The Fe-5i-C sintered alloy proposed by the inventor is a soft magnetic material with excellent vibration-proofing properties, but in order to fully exhibit this feature, it is necessary to include the Fe-5i sintered alloy. It is necessary to reduce as much as possible the amount of graphite contained in carbon fibers, and countermeasures have been sought.
上記の問題はグラファイト粉をＦｅ−３ｉ合金よりなる
結晶粒界に析出せしめ、該グラファイトの粘弾性効果を
利用して防振を行う防振磁性合金の製法として、前記の
グラファイト粉を添加したＦｅ−３ｉ合金粉に更に銅（
Ｃｕ）粉を加え、混合した後にプレス成形を行い、該成
形体を焼結する防振磁性合金の製造方法により解決する
ことができる。To solve the above problem, as a method for producing a vibration-proof magnetic alloy in which graphite powder is precipitated at the grain boundaries of Fe-3i alloy and the graphite's viscoelastic effect is used to provide vibration isolation, the above-mentioned graphite powder-added Fe -3i alloy powder plus copper (
This problem can be solved by a method for manufacturing a vibration-proof magnetic alloy in which Cu) powder is added and mixed, press-formed, and the molded body is sintered.
本発明はＦｅ−５ｉ合金結晶中へのグラファイトの浸透
を阻止する方法としてＣｕを加えて焼結を行うものであ
る。In the present invention, Cu is added and sintered as a method of preventing graphite from penetrating into Fe-5i alloy crystals.
炭素（Ｃ）元素は高温においてＦｅＯ中に拡散し易く、
反応してセメンタイト（ＦｅｓＣ）を生ずることは良く
知られており、低炭素鋼を炭素拡散剤の中で加熱して鋼
の表面から内部に炭素を浸透拡散させ、表面層を高炭素
鋼の組成にする方法を浸炭と言い、一般に用いられてい
る方法である。Carbon (C) element easily diffuses into FeO at high temperature,
It is well known that cementite (FesC) is produced by reaction, and by heating low carbon steel in a carbon diffusing agent, carbon permeates and diffuses from the surface of the steel into the interior, and the surface layer changes to the composition of high carbon steel. The method of carburizing is a commonly used method.
このように、ＦｅＯ中にはＣは浸透し易いが、低炭素鋼
の中にＣｕが含まれていると、Ｃの拡散が抑制されるこ
とが知られており、また鋳鉄において、原料中でＣｕの
含有量が多いとＣが結晶粒界に析出することが知られて
いる。In this way, C easily penetrates into FeO, but it is known that when low carbon steel contains Cu, the diffusion of C is suppressed. It is known that when the Cu content is high, C precipitates at grain boundaries.
本発明はこの現象を利用し、Ｆｅ−５ｉ粉とグラファイ
トとの混合物を焼結する際にＣｕ粉を加えることにより
Ｃの浸透拡散を抑制するものである。The present invention takes advantage of this phenomenon and suppresses the permeation and diffusion of C by adding Cu powder when sintering a mixture of Fe-5i powder and graphite.
一１５０メツシュのＦｅ−３％Ｓｉ粉にグラファイト粉
を３％および５％を加えて二種類の試料を作り、この試
料にＣｕ粉を０．５ 、 １．１．５および２％添加し
１、Ｃｕ無添加のものと合わせて１０種類の試料を作り
、このそれぞれの試料をＶ型混合機を用いて混合した後
、５ ｔｏｎ／ｃｍ”の条件で成形した。Two types of samples were made by adding 3% and 5% graphite powder to 150 mesh Fe-3%Si powder, and 0.5, 1.5 and 2% Cu powder was added to this sample. , 10 types of samples were prepared including those without Cu addition, and after mixing each sample using a V-type mixer, they were molded under the condition of 5 ton/cm''.
次に、これらの試料を水素（Ｈ２）気流中で１１４０℃
で５時間に亙って焼結処理を行った後、毎時１００℃の
条件で徐冷した。Next, these samples were heated at 1140°C in a hydrogen (H2) stream.
After performing the sintering treatment for 5 hours, it was slowly cooled at 100° C. per hour.
第１図〜第４図はかかる試料についてＣｕ添加量の影響
を示すもので、第１図は振動減衰率の依存性で振動減衰
率はグラファイトの添加量に比例しているが、Ｃｕの添
加は１％程度が良いことを示している。Figures 1 to 4 show the influence of the amount of Cu added on such samples. Figure 1 shows the dependence of the vibration damping rate, and the vibration damping rate is proportional to the amount of graphite added, but the addition of Cu shows that about 1% is good.
なお、同図に示した△は防振磁性合金として著名なサイ
レンタロイ （Ｆｅ−１３Ｃｒ−３Ａ １ ）の振動減
衰率を示すものであり、本発明に係る防振磁性材料が優
れていることが判る。Note that △ shown in the same figure indicates the vibration damping rate of Silentalloy (Fe-13Cr-3A 1 ), which is famous as a vibration-proof magnetic alloy, and it can be seen that the vibration-proof magnetic material according to the present invention is excellent. .
次に、第２図はＢ、。（５００ｅでの磁場中での磁束密
度）の依存性であってグラファイト５％のものが高いも
の−、ＣＬＩの添加量に比例して減少している。Next, Figure 2 shows B. The dependence of (magnetic flux density in a magnetic field at 500e), which is high for 5% graphite, decreases in proportion to the amount of CLI added.
次に、第３図は保磁力（Ｈｃ）に対する依存性であって
Ｃｕの添加量が増すに従って増加しており好ましくない
ことを示している。Next, FIG. 3 shows the dependence on coercive force (Hc), which increases as the amount of Cu added increases, which is undesirable.
また、第４図は透磁率（μｍに対するＣｕ添加の影響で
あって、添加量が１％を超えると急激に透磁率は減少し
ている。Moreover, FIG. 4 shows the influence of Cu addition on magnetic permeability (μm), and when the amount of addition exceeds 1%, the magnetic permeability decreases rapidly.
こ汽らの結果を綜合してＦｅ−５ｔ合金粉にグラファイ
トを添加してなる防振磁性材料に対するＣｕの添加量は
０．５〜１％が適当であると言える。Combining the results of these authors, it can be said that the appropriate amount of Cu to be added to a vibration-proof magnetic material made by adding graphite to Fe-5t alloy powder is 0.5 to 1%.
なお、顕微鏡観察によるとＣｕを添加した試料について
はグラファイトはＦｅ−５ｔ合金粒よりなる焼結体の粒
界に均一に析出しているのが認められ、またＸ線回折の
結果からも、焼結したＦｅ−５ｉ合金粒の中のＣ濃度は
０．２％以下であることを確認することができた。Furthermore, according to microscopic observation, it was observed that graphite was uniformly precipitated at the grain boundaries of the sintered body made of Fe-5t alloy grains in the sample to which Cu was added, and the results of X-ray diffraction also showed that It was confirmed that the C concentration in the solidified Fe-5i alloy grains was 0.2% or less.
本発明の実施によりＦｅ−５ｉ合金粉の磁気特性を損な
うことなく防振磁性合金を製造することができ、これに
より防振性を従来に較べて約１０％向上することができ
た。By carrying out the present invention, it was possible to produce a vibration-proof magnetic alloy without impairing the magnetic properties of the Fe-5i alloy powder, and thereby the vibration-proofing properties were improved by about 10% compared to the conventional method.
第１図は振動減衰率とＣｕ添加量との関係図、第２図は
Ｂ、。とＣｕ添加量との関係図、第３図は保磁力とＣｕ
添加量との関係図、第４図は透磁率とＣｕ添加量との関
係図、である。Figure 1 is a diagram of the relationship between the vibration damping rate and the amount of Cu added, and Figure 2 is B. Figure 3 shows the relationship between the amount of Cu added and the coercive force and the amount of Cu added.
FIG. 4 is a diagram showing the relationship between magnetic permeability and the amount of Cu added.
Claims (2)
に析出せしめ、該グラファイトの粘弾性効果を利用して
防振を行う防振磁性合金の製法として、前記のグラファ
イト粉を添加した鉄・硅素合金粉に更に銅粉を加え、混
合した後にプレス成形を行い、該成形体を焼結すること
を特徴とする防振磁性合金の製造方法。(1) As a method for producing a vibration-proof magnetic alloy in which graphite powder is precipitated at the grain boundaries of an iron-silicon alloy and the graphite's viscoelastic effect is used to provide vibration isolation, the above-mentioned iron/silicon alloy containing graphite powder is A method for producing a vibration-proof magnetic alloy, which comprises further adding copper powder to silicon alloy powder, performing press molding after mixing, and sintering the molded body.
５〜１重量％であることを特徴とする特許請求の範囲第
１項記載の防振磁性合金の製造方法。(2) The amount of copper powder added to the iron-silicon alloy powder is 0.
The method for producing a vibration-proof magnetic alloy according to claim 1, characterized in that the content is 5 to 1% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28691187A JPH0814012B2 (en) | 1987-11-13 | 1987-11-13 | Method for manufacturing vibration-proof magnetic alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28691187A JPH0814012B2 (en) | 1987-11-13 | 1987-11-13 | Method for manufacturing vibration-proof magnetic alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01129949A true JPH01129949A (en) | 1989-05-23 |
| JPH0814012B2 JPH0814012B2 (en) | 1996-02-14 |
Family
ID=17710583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28691187A Expired - Fee Related JPH0814012B2 (en) | 1987-11-13 | 1987-11-13 | Method for manufacturing vibration-proof magnetic alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814012B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200985A (en) * | 2014-08-27 | 2014-12-10 | 青岛云路新能源科技有限公司 | Modified magnetic powder core manufacturing method |
-
1987
- 1987-11-13 JP JP28691187A patent/JPH0814012B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200985A (en) * | 2014-08-27 | 2014-12-10 | 青岛云路新能源科技有限公司 | Modified magnetic powder core manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0814012B2 (en) | 1996-02-14 |
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