JPH0397839A - Combined lightweight damping material and production thereof - Google Patents
Combined lightweight damping material and production thereofInfo
- Publication number
- JPH0397839A JPH0397839A JP23301089A JP23301089A JPH0397839A JP H0397839 A JPH0397839 A JP H0397839A JP 23301089 A JP23301089 A JP 23301089A JP 23301089 A JP23301089 A JP 23301089A JP H0397839 A JPH0397839 A JP H0397839A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- base material
- vibration
- magnesium
- layer
- 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 38
- 238000013016 damping Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 19
- 238000007747 plating Methods 0.000 claims abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000011777 magnesium Substances 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 5
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229910007570 Zn-Al Inorganic materials 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910017566 Cu-Mn Inorganic materials 0.000 description 2
- 229910017871 Cu—Mn Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 229910003023 Mg-Al Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（｛既 要）
複合軽量防振材とその製法に関し、
簡単に軽量な防振材を提供することを目的とし、マグネ
シウム又はマグネシウム合金を母材とし、表面に亜鉛−
アルミニウム合金を溶融めっきし、急冷するように構戒
する。[Detailed Description of the Invention] ({Already required) Regarding a composite lightweight vibration isolating material and its manufacturing method, the purpose is to provide a simple and lightweight vibration isolating material using magnesium or a magnesium alloy as a base material and a zinc-coated surface.
Aluminum alloy is hot-dipped and then rapidly cooled.
本発明は複合軽量防振材及びその製造方法に係る。 The present invention relates to a composite lightweight vibration damping material and a method for manufacturing the same.
従来から、各種装置で行われている騒音対策は吸音材で
あるグラスウール、ウレタンフォームなどの大量使用で
あり、騒音の発生源に直接働き掛ける方法はとられてい
ない。Traditionally, noise countermeasures for various types of equipment have involved the use of large quantities of sound-absorbing materials such as glass wool and urethane foam, and no methods have been taken to directly address the source of the noise.
近年、これらの騒音発生源に直接使用できる防振特性を
有する合金が種々開発されている。このような防振合金
にはＦｅ −Ｃｒ−ＡＪ系、Ｃｕ −Ｍｎ系、などがあ
る。また、防振合金には微細な結晶構造を利用したＺｎ
−Ａｊ！などの軽量材もある。In recent years, various alloys have been developed that have anti-vibration properties that can be used directly for these noise sources. Such anti-vibration alloys include Fe-Cr-AJ-based, Cu-Mn-based, and the like. In addition, the anti-vibration alloy is made of Zn, which utilizes a fine crystal structure.
-Aj! There are also lightweight materials such as
［発明が解決しようとする課題］
上記のＦｅ −Ｃｒ−Ａｌ系、Ｃｕ−Ｍｎ系等の如き防
振合金は例えば転位や磁歪、マルテンサイト変態を利用
したりするため、製品形状に加工後、複雑な熱処理が必
要となり、この時、加工歪みのための変形を生じたりす
るため、精度のよい部品への適用が難しい。また、Ｆｅ
系、Ｃｕ系合金であるため、重く、近年の各種装置の軽
薄・短小化の要求を満足できない。さらに、高価である
と言・）欠点もあり、実用に供されている例は少ない。[Problems to be Solved by the Invention] Since vibration-proof alloys such as the Fe-Cr-Al system, Cu-Mn system, etc. mentioned above utilize dislocation, magnetostriction, martensitic transformation, etc., after processing into a product shape, It requires complicated heat treatment, which may cause deformation due to processing distortion, making it difficult to apply to high-precision parts. Also, Fe
Since it is a Cu-based alloy, it is heavy and cannot satisfy recent demands for lighter, thinner, shorter and smaller devices. Furthermore, it has the disadvantage of being expensive, and there are few examples of it being put into practical use.
一方、上記のＺｎ−ＡＩ！合金は軽量ではあるが、重い
Ｚｎを多量に含んでいるため、まだ比較的重い欠点があ
る。On the other hand, the above Zn-AI! Although the alloy is lightweight, it still has the disadvantage of being relatively heavy due to the high content of heavy Zn.
そこで、本発明は従来の防振材料の欠点である？Ｉ９＃
な熱処理を必要とせず、安価であり、かつ使用中での特
性の劣化のない、さらに、近年の各種装置の軽薄・短小
化の要求を満足できる軽量で、かつ良好な防振特性を有
する各種の騒音を発生する装置の騒音発生源に直接使用
できる防振合金を提供することを目的とする。Therefore, what does the present invention have to do with the drawbacks of conventional anti-vibration materials? I9#
Various types of products that do not require extensive heat treatment, are inexpensive, do not deteriorate in characteristics during use, are lightweight and have good anti-vibration characteristics that satisfy the recent demands for lighter, thinner, shorter and smaller devices. The purpose of the present invention is to provide a vibration-proof alloy that can be used directly at the noise source of equipment that generates noise.
本発明は、上記目的を達戒するために、マグネシウム又
はマグネシウム合金母材に亜鉛−アルミニウム合金溶融
めっきを施し、急冷することを特徴とする複合軽量防振
材の製造方法と、マグネシウム又はマグネシウム合金母
材表面に平均粒径５Ｉ！ｍ以下の亜鉛−アルミニウム合
金層を有し、かつ亜鉛−アルミニウム合金層とマグネシ
ウム又はマグネシウム合金焼結体とは界面で相互に合金
化して密着していることを特徴とする複合軽量防振材と
を提供する。In order to achieve the above-mentioned object, the present invention provides a method for manufacturing a composite lightweight vibration damping material, which comprises applying zinc-aluminum alloy hot-dip plating to a magnesium or magnesium alloy base material and rapidly cooling it, and a magnesium or magnesium alloy base material. Average grain size 5I on the base material surface! A composite lightweight vibration damping material having a zinc-aluminum alloy layer with a thickness of less than I will provide a.
マグネシウム又はマグネシウム合金母材は軽量であるゆ
えに用いるものであり、これ自体が防振特性を有する必
要はないが、Ｍｇ合金のうちでも防振特性に優れた合金
たとえばＭｇ −０．５％Ｚｒ合金などを用いることが
好ましい。また、Ｍｇ合金は溶融戒形では巣の発生が起
き易いため均一な戒形品の製造が容易でない場合がある
が、粉末冶金法で焼結することによって均一な合金或形
体が得られる。（特開昭６３−６５０４８号公報等参照
）。Magnesium or a magnesium alloy base material is used because it is lightweight, and does not need to have vibration-damping properties itself, but Mg alloys that have excellent vibration-damping properties, such as Mg-0.5%Zr alloys, are used. It is preferable to use the following. Further, when Mg alloy is melted into a molded form, cavities are likely to occur, so it may not be easy to manufacture a uniform molded product, but a uniform alloy or molded product can be obtained by sintering with a powder metallurgy method. (Refer to Japanese Patent Application Laid-Open No. 63-65048, etc.).
Ｚｎ−Ａｌｔ系合金は、Ｚｎを母体としＡｌ含分が１８
〜２６％、好ましくは２２％の組成を有し、かつ結晶粒
径が微細化（一般的には平均粒径５祉以下、好ましくは
２一以下）されることによって防振特性を発揮する。こ
の微細化は溶融めっき後の急冷によって得られる。また
、Ｚｎ −ＡＮ系合金層の厚みはその厚みに応じて本発
明の防振材に防振特性を付与するが、−Ｃ的には５０Ｊ
Ｍ程度以上あればＦｅ系防振合金と同等の防振特性が得
られる。Zn-Alt alloy has Zn as a matrix and Al content is 18
It has a composition of ~26%, preferably 22%, and exhibits anti-vibration properties by having a fine crystal grain size (generally an average grain size of 50% or less, preferably 21% or less). This refinement is obtained by rapid cooling after hot-dip plating. In addition, the thickness of the Zn-AN alloy layer imparts vibration-proofing properties to the vibration-proofing material of the present invention depending on the thickness, but in terms of -C, it is 50J.
If it is about M or more, vibration damping properties equivalent to those of Fe-based vibration damping alloys can be obtained.
本発明では、Ｚｎ −ＡＮ合金層を溶融めっきで形或す
ることによって、Ｚｎ −／Ｍ！合金層とＭｇ合金母材
の界面にこれらの間の合金層を形或して、Ｚｎ−Ａｊ！
合金層とＭｇ合金母材との間の密着を高めることができ
る。In the present invention, by forming the Zn-AN alloy layer by hot-dip plating, Zn-/M! By forming an alloy layer between the alloy layer and the Mg alloy base material at the interface, Zn-Aj!
Adhesion between the alloy layer and the Mg alloy base material can be improved.
溶融めっきは浴温５５０゜Ｃ±１０゜Ｃとすると、Ｍｇ
，Ｍｇ合金の一部が固液混合層を形成し、この液相の助
けによって上記界面の合金層が強固に形戒される。For hot-dip plating, if the bath temperature is 550°C ± 10°C, Mg
, a part of the Mg alloy forms a solid-liquid mixed layer, and the alloy layer at the interface is firmly formed with the help of this liquid phase.
急冷は水中焼入れ程度、すなわち、５００’Ｃ／ｓｅｃ
程度以上の速度で行う。これは、結晶粒を微細化するた
めであり、これ以上遅い冷却では、十分な防振性を示さ
ない。Rapid cooling is equivalent to underwater quenching, that is, 500'C/sec.
Do it at a speed that is faster than normal. This is to make the crystal grains finer, and if the cooling is made slower than this, sufficient vibration damping properties will not be exhibited.
本発明の防振材は母材のＭｇ合金により軽量化を図り、
表面のＺｎ −Ａｊｉ系合金層により防振特性を得る。The vibration isolating material of the present invention aims to reduce weight by using Mg alloy as a base material,
The Zn-Aji alloy layer on the surface provides anti-vibration properties.
製法としては溶融めっきと急冷だけであり、複雑な熱処
理を必要としない。The manufacturing method is just hot-dip plating and rapid cooling, and no complicated heat treatment is required.
（実施例〕
−２００メッシュのＭｇ粉末とＡｌ粉末をＭｇ −９％
Ａｆとなるように秤量・混合した後、４トン／ ｃ＋ｊ
の圧力で５ Ｘ１０Ｘ５０ｎｍの板状にブレス或形した
。成形品をアルゴン気流中に保持して、５５０’Ｃでｌ
ｈ焼結した。この時、Ａｒガスの流量は１０リットル／
分とした。得られた焼結体は密度が約９４％と実用上問
題ない程度に緻密化していた。(Example) -200 mesh Mg powder and Al powder were mixed with Mg -9%
After weighing and mixing to give Af, 4 tons/c+j
The sample was pressed into a plate shape of 5 x 10 x 50 nm at a pressure of . The molded parts were kept in a stream of argon and heated at 550'C.
h Sintered. At this time, the flow rate of Ar gas is 10 liters/
It was a minute. The obtained sintered body had a density of about 94%, which was dense enough to cause no practical problems.
この焼結体をＺｎ−２２％Ａ１からなる浴温５５０゜Ｃ
の′ｒ？ｊ融めっき浴に５分間浸漬した。５５０″Ｃで
はＭｇ−９％Ａｌ焼結体の一部は固液混合層を形成する
ため、焼結体とめっき層の界面では液相の助けにより、
合金層が形戒される。つぎに、めっき浴からとりだし、
水中に焼入れすることによって急冷した。This sintered body was heated to a bath temperature of 550°C consisting of Zn-22%A1.
'r? j Immersed in a dip-plating bath for 5 minutes. At 550"C, part of the Mg-9%Al sintered body forms a solid-liquid mixed layer, so at the interface between the sintered body and the plating layer, with the help of the liquid phase,
The alloy layer is shaped. Next, remove it from the plating bath,
It was quenched by quenching in water.
試料の断面を観察した結果、第１図に示す如く、合金層
２の厚さは約１２０ｎ， Ｚｎ−２２％，１ＭめっきＮ
３の厚さは約５０戸であった。ＩがＭｇ合金母材である
。また、めっき層の結晶粒径は平均約２戸程度と微細化
されていた。As a result of observing the cross section of the sample, as shown in Fig. 1, the thickness of the alloy layer 2 was approximately 120n, Zn-22%, 1M plating N.
The thickness of 3 was approximately 50 houses. I is the Mg alloy base material. In addition, the crystal grain size of the plating layer was reduced to about 2 doors on average.
得られた試料ではめっき層と母材が反応合金層で強固に
密着しており、使用中でのＺｎ −２２％Ａｌめっき層
の剥離などの経Ｉｌｆ変化はまったく認められなかった
。In the obtained sample, the plating layer and the base material were firmly adhered to each other by the reactive alloy layer, and no changes over time such as peeling of the Zn-22%Al plating layer during use were observed.
得られた防振材の減衰率を第２図に示す方法で測定した
。ウレタン発泡体１１に取付けた試料１２に加速度ビッ
クアップ素子１３を装着し、３Ｘ１０−’ｋｇ・ｍの衝
撃エネルギーを与えて、試料１２の振動の減衰をアンブ
ｌ４、デジタルスペクトル分析器１５で調べた。試料と
して上記実施例で得たＭｇ合金／Ｚｎ−ＡＩ！系合金防
振材と市販のＦｅ −１５％Ｃｒ３％Ａｌ合金防振材を
用いて比較した。結果を第３図に示す。本発明品（振動
減衰率ｔａｎδ一０．１１）（第３図（Ａ））はＦｅ系
防振材（第３図（Ｂ））と同等以上であることが認めら
れる。The damping factor of the obtained vibration damping material was measured by the method shown in FIG. An acceleration kick-up element 13 was attached to the sample 12 attached to the urethane foam 11, and an impact energy of 3×10-'kg·m was applied to the sample 12, and the attenuation of the vibration of the sample 12 was examined using an ambule 14 and a digital spectrum analyzer 15. . The Mg alloy/Zn-AI obtained in the above example was used as a sample. A comparison was made using a commercially available Fe-15%Cr3%Al alloy vibration damping material. The results are shown in Figure 3. It is recognized that the product of the present invention (vibration damping rate tan δ - 0.11) (Fig. 3 (A)) is equivalent to or higher than the Fe-based vibration damping material (Fig. 3 (B)).
また、Ｍｇ系焼結合金の耐食性を−４５〜＋８０’Ｃの
ＭＩＬ規格に準じた温度サイクル試験で調べた。In addition, the corrosion resistance of the Mg-based sintered alloy was investigated by a temperature cycle test in accordance with the MIL standard from -45 to +80'C.
上記実施例で得られたものとＭｇ −９％ＡＩ！焼結品
についての腐食減量の結果を第４図に示す。腐食減量は
「（元の重さ）と（ｎ回後のサビ（腐食生威物）を除去
した重さ）との差」として求めた。What was obtained in the above example and Mg -9%AI! Figure 4 shows the results of corrosion weight loss for sintered products. The corrosion weight loss was determined as "the difference between (original weight) and (weight after removing rust (corrosion products) after n times)".
第４図より、本発明品は耐食性が約２倍向上しているこ
とが見られる。From FIG. 4, it can be seen that the corrosion resistance of the product of the present invention is approximately doubled.
上記Ｍｇ−Ａｌ系合金のほか、Ｍｇ−Ｚｎ系などでも同
様の効果が得られる。In addition to the above-mentioned Mg-Al alloy, similar effects can be obtained with Mg-Zn alloys and the like.
以上説明したように、本発明によれば、Ｍｇ又はＭｇ合
金にＺｎ−Ａｌ系合金を溶融めっきし、その後急冷処理
を施すだけで、複雑な熱処理の必要がなく、安価に経時
変化のない、近年の各種装置の軽薄・短小化の要求を満
足できる軽量で、かつ良好な防振特性を有する新しい防
振材料が提供でき、騒音対策が必要な各種装置に応用が
可能である。As explained above, according to the present invention, by simply hot-dipping Mg or Mg alloy with Zn-Al alloy and then performing rapid cooling treatment, there is no need for complicated heat treatment, and it is inexpensive and does not change over time. A new anti-vibration material that is lightweight and has good anti-vibration properties that satisfies the recent demands for lighter, thinner, shorter and smaller devices can be provided, and can be applied to a variety of devices that require noise countermeasures.
第ｌ図は本発明の複合軽量防振材の断面図、第２図は振
動減衰率測定概念図、第３図は振動減衰率測定結果のグ
ラフ、第４図はＭｇ系合金の腐食Ｍｆｆｉを示すグラフ
図である。
１・・・Ｍｇ合金母材、 ２・・・合金層、３・
・・Ｚｎ −Ａｌ系防振層、
１ｌ・・・ウレタン発泡体、 １２・・・音叉、１
３・・・試料、 １４・・・アンプ、
ｌ５・・・デジタルスペクトル分析器。
複合軽量防振材Figure 1 is a cross-sectional view of the composite lightweight vibration isolating material of the present invention, Figure 2 is a conceptual diagram of vibration damping rate measurement, Figure 3 is a graph of vibration damping rate measurement results, and Figure 4 is a graph showing the corrosion Mffi of Mg-based alloys. FIG. DESCRIPTION OF SYMBOLS 1... Mg alloy base material, 2... Alloy layer, 3...
...Zn-Al-based vibration isolation layer, 1l...urethane foam, 12...tuning fork, 1
3...Sample, 14...Amplifier,
l5...Digital spectrum analyzer. Composite lightweight vibration isolation material
Claims (2)
アルミニウム合金溶融めっきを施し、急冷することを特
徴とする複合軽量防振材の製造方法。1. Zinc in magnesium or magnesium alloy base material
A method for manufacturing a composite lightweight vibration-proofing material characterized by applying aluminum alloy hot-dip plating and rapidly cooling it.
均粒径５μｍ以下の亜鉛−アルミニウム合金層を有し、
かつ亜鉛−アルミニウム合金層とマグネシウム又はマグ
ネシウム合金母材とは界面で相互に合金化して密着して
いることを特徴とする複合軽量防振材。2. Having a zinc-aluminum alloy layer with an average grain size of 5 μm or less on the surface of the magnesium or magnesium alloy base material,
A composite lightweight vibration-damping material characterized in that the zinc-aluminum alloy layer and the magnesium or magnesium alloy base material are alloyed and adhered to each other at the interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23301089A JPH0397839A (en) | 1989-09-11 | 1989-09-11 | Combined lightweight damping material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23301089A JPH0397839A (en) | 1989-09-11 | 1989-09-11 | Combined lightweight damping material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0397839A true JPH0397839A (en) | 1991-04-23 |
Family
ID=16948403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23301089A Pending JPH0397839A (en) | 1989-09-11 | 1989-09-11 | Combined lightweight damping material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0397839A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5905706A (en) * | 1995-02-24 | 1999-05-18 | Sony Corporation | Electronic equipment such as recording and/or reproducing for recording medium |
| JP2001527157A (en) * | 1997-12-19 | 2001-12-25 | エスエムエス・デマーク・アクチエンゲゼルシャフト | Method for producing strip metal composites by high temperature dip coating |
| JP2013007071A (en) * | 2011-06-22 | 2013-01-10 | Yodogawa Steel Works Ltd | Al-Zn ALLOY-PLATED STEEL PLATE, AND METHOD AND DEVICE FOR MANUFACTURING THE SAME |
-
1989
- 1989-09-11 JP JP23301089A patent/JPH0397839A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5905706A (en) * | 1995-02-24 | 1999-05-18 | Sony Corporation | Electronic equipment such as recording and/or reproducing for recording medium |
| JP2001527157A (en) * | 1997-12-19 | 2001-12-25 | エスエムエス・デマーク・アクチエンゲゼルシャフト | Method for producing strip metal composites by high temperature dip coating |
| JP2013007071A (en) * | 2011-06-22 | 2013-01-10 | Yodogawa Steel Works Ltd | Al-Zn ALLOY-PLATED STEEL PLATE, AND METHOD AND DEVICE FOR MANUFACTURING THE SAME |
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