JPH024906A - Manufacture of flaky rapidly cooling solidified metal powder - Google Patents
Manufacture of flaky rapidly cooling solidified metal powderInfo
- Publication number
- JPH024906A JPH024906A JP15387688A JP15387688A JPH024906A JP H024906 A JPH024906 A JP H024906A JP 15387688 A JP15387688 A JP 15387688A JP 15387688 A JP15387688 A JP 15387688A JP H024906 A JPH024906 A JP H024906A
- Authority
- JP
- Japan
- Prior art keywords
- metal powder
- metal
- flaky
- cooling body
- drip
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 61
- 239000002184 metal Substances 0.000 title claims abstract description 61
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 238000009689 gas atomisation Methods 0.000 abstract description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 150000004767 nitrides Chemical class 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- -1 oxides Chemical class 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 101100505735 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) cot-2 gene Proteins 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000007740 vapor deposition Methods 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、粒任の小さいフレーク状の金属粉末を効率よ
く製造できる方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for efficiently producing flaky metal powder with small particle sizes.
（従来技術）
金属粉末を加圧、加熱状態で成形する粉末冶金は、従来
上り機械部品、超硬工具、磁気材料の製造など種々の分
野で行なわれている。この粉末冶金に使用する金属粉末
は、主としてガスアトマイズ法により製造されているが
、この方法は、ノズルより流出させた金属溶湯に高圧ガ
スを噴射して金属溶湯を液滴にすると同時に急冷凝固さ
せる方法であるため、特性が徐冷した場合より改善され
る金属、例えば、非晶質合金、過飽和固溶体金属の粉末
製造に適している。(Prior Art) Powder metallurgy, in which metal powder is molded under pressure and heat, has been used in various fields such as the manufacture of upstream machine parts, cemented carbide tools, and magnetic materials. The metal powder used in this powder metallurgy is mainly manufactured by the gas atomization method, which involves injecting high-pressure gas into the molten metal flowing out of a nozzle to turn the molten metal into droplets and simultaneously rapidly solidifying it. Therefore, it is suitable for producing powders of metals whose properties are improved by slow cooling, such as amorphous alloys and supersaturated solid solution metals.
しかし、この方法で製造した金属粉末は、一般に、球状
もしくは極めて比表面積の小さい形状のものであるため
、粒子同志の焼結性が劣り、ホットプレス法などで焼結
する場合、高密度に焼結することは困難であった。一般
に、急冷により得られる粉末使用による粉末冶金の場合
、急冷効果を失わないためには、できるだけ低温で焼結
する必要がある。とくに、非晶質合金粉末の場合には、
結晶化温度以下の低温、短時間で焼結が完了しなければ
ならない。しかし、従来の〃スアトマイズ法で製造した
球状粉末では、急冷効果を損なわない低温で強固に焼結
した製品を得ることが困難であった。However, metal powder produced by this method is generally spherical or has a shape with an extremely small specific surface area, so the sinterability of the particles is poor, and when sintered by hot pressing, etc., it is difficult to sinter at high density. It was difficult to conclude. Generally, in the case of powder metallurgy using powder obtained by rapid cooling, it is necessary to sinter at as low a temperature as possible in order to maintain the rapid cooling effect. In particular, in the case of amorphous alloy powder,
Sintering must be completed in a short time at a low temperature below the crystallization temperature. However, with the spherical powder produced by the conventional atomizing method, it is difficult to obtain a product that is strongly sintered at a low temperature that does not impair the quenching effect.
ホットプレス法などを用い低温焼結（約１００〜５００
℃）して金属粉末を強固に焼結するためには、比表面積
の大きいフレーク状の金属粉末を使用する必要があり、
これによって、例えば、非晶質合金粉末の場合でも、９
９％以上の商密度で強固に焼結することができる。Low-temperature sintering (approximately 100 to 500
In order to strongly sinter the metal powder by
By this, for example, even in the case of amorphous alloy powder, 9
It can be strongly sintered with a commercial density of 9% or more.
このフレーク状の金属粉末の製造には、〃スアトマイズ
法で液滴にした金属溶湯を凝固前に回転冷却体に衝突さ
せて偏平形状にする方法を用いることができる。To produce this flaky metal powder, a method can be used in which molten metal is made into droplets by the atomization method and is made to collide with a rotating cooling body to form a flat shape before solidification.
例えば、金属粉末のすべてもしくは大部分をフレーク状
のものにしたい場合は、ｔｔＳ３図に示すように、ルツ
ボ１に金属溶湯２を入れて、ルツボ１の下部に設けた流
出ノズル３がら流出させた後、流出７ズル３の下方に周
設した超音波〃スアトマイズ装置４（ガスを吹き込み管
５より供給）より超音速ガスを噴射させて、流出溶湯に
超音波振動を与えなから液滴にし、その液滴が凝固しな
いうちに回転ロール６のロール面に衝突させて急冷凝固
させる方法が知られている。For example, if you want to make all or most of the metal powder into flakes, put the molten metal 2 into the crucible 1 and let it flow out through the outflow nozzle 3 provided at the bottom of the crucible 1, as shown in Figure ttS3. After that, supersonic gas is injected from an ultrasonic atomizing device 4 (gas is supplied from a blowing pipe 5) installed below the outflow nozzle 3, and the outflowing molten metal is turned into droplets without applying ultrasonic vibrations. A method is known in which the droplets are made to collide with the roll surface of the rotating roll 6 before they solidify to rapidly solidify them.
また、フレーク状と球状のものが混合したものを製造す
る場合には、第４図に示すように、金属溶湯の流出ノズ
ル３の下方に〃ス噴射ノズル７を配置して、流出ノズル
３がら流出させた金属溶湯に高速ガスを噴射することに
上り液滴にし、この液滴を円錐型回転冷却体８の斜面に
衝突させる方法により行っている。この方法では、液滴
が流出ノズル３に近接した斜面部分に凝固前に衝突し、
流出ノズル３より離れた斜面部分には凝固後衝突するの
で、フレーク状と球状の混合したものが製造される。In addition, when producing a mixture of flakes and spheres, as shown in FIG. This is carried out by injecting high-speed gas into the flowing molten metal to form liquid droplets, and causing the liquid droplets to collide with the slope of the conical rotary cooling body 8. In this method, the droplets collide with the inclined surface near the outflow nozzle 3 before solidifying.
Since it collides with the slope portion away from the outflow nozzle 3 after solidification, a mixture of flake and spherical shapes is produced.
（発明が解決しようとする問題点）
ところで、これらのフレーク状金属粉末製造法では、液
滴が回転ロール６や円錐型回転冷却体８などの回転冷却
体に衝突したとき、衝突と同時に急冷されるようにする
ため、通常、回転冷却体として、熱伝導率の良好な銅を
使用するが、銅は金属の溶湯液滴との濡れ性が良好であ
るために、衝突しだ液滴が回転冷却体表面に付着して脱
離し難い。また、高温の液滴を長時間衝突させると、液
滴の一部は銅と反応して融着し、回転冷却体表面の温度
を上昇させてしまう。このため、回転冷却体に衝突した
液滴が凝固して飛散する前にその上に次の液滴が衝突し
てお互に結合し、大部分が粒径の大きいものになってし
まう。(Problems to be Solved by the Invention) By the way, in these flaky metal powder manufacturing methods, when droplets collide with a rotary cooling body such as the rotary roll 6 or the conical rotary cooling body 8, they are rapidly cooled at the same time as the collision. To achieve this, copper, which has good thermal conductivity, is usually used as a rotating cooling body. However, since copper has good wettability with molten metal droplets, the droplets collide and rotate. It adheres to the surface of the cooling body and is difficult to detach. Furthermore, if high-temperature droplets are allowed to collide for a long time, some of the droplets will react with copper and fuse together, raising the temperature of the surface of the rotary cooling body. For this reason, before the droplets that collide with the rotary cooling body solidify and scatter, the next droplets collide with them and combine with each other, resulting in most of the droplets having a large particle size.
冷却体表面への液滴の融着は、回転冷却体を水などで内
部冷却すれば防止できるが、水冷にすると、装置の複雑
化、生産コストの上昇、回転体の回転数制限や形状限定
など様々の弊害が生じる。The adhesion of droplets to the surface of the cooling body can be prevented by internally cooling the rotating cooling body with water, but water cooling increases the complexity of the equipment, increases production costs, and limits the number of rotations and shape of the rotating body. Various harmful effects occur.
本発明は、かかる点に鑑み、粒径の小さいフレーク状金
属粉末を安価で効率よく製造できる方法を提供するもの
である。In view of the above, the present invention provides a method for producing flaky metal powder with a small particle size at low cost and efficiently.
（問題点を解決するための手段）
本発明は、回転冷却体の表面をセラミックス、少なくと
も１ （１００℃以上の高融点金属またはこれらの複合
体で被覆して、粒径の小さいフレーク状金属粉末を容易
に、がっ、大量に製造するものである。(Means for Solving the Problems) The present invention provides for coating the surface of a rotary cooling body with ceramics, at least one metal (a metal with a high melting point of 100° C. or higher, or a composite thereof) to form flaky metal powder with a small particle size. can be easily manufactured in large quantities.
ここで、セラミックスとしては、金属の窒化物、酸化物
、炭化物などを使用する。例えば、窒化物の場合、Ｔｉ
５Ｚｒ、 Ｉ汀、ｖ１旧］、Ｔａ、 ＣｒなとのＮＮ型
窒化物、Ｎｏ、 ＨｌＦｅなとのＮ２Ｎ型窒化物、Ｃｏ
、旧などのＭ３Ｎ２型窒化物、ＢＮ、 ５ｉｓＮ、など
の半金属窒化物を、また、酸化物としては、＾１□０３
．５ｉ０２、ＺｒＯ２などを、さらに、炭化物としては
、ＳｉＣ，ＴｉＣ５ＺｒＣなどを使用すればよい。Here, as the ceramics, metal nitrides, oxides, carbides, etc. are used. For example, in the case of nitrides, Ti
5Zr, I, v1 old], NN type nitride with Ta, Cr, No, N2N type nitride with HlFe, Co
, M3N2 type nitrides such as old, semimetal nitrides such as BN, 5isN, etc., and oxides such as ^1□03
．． 5i02, ZrO2, etc., and as the carbide, SiC, TiC5ZrC, etc. may be used.
また、約１０００℃より高融点金属としては、例えば、
Ｃ「、旧、Ｔｉ、 Ｔａ、 Ｐｔなどの純金属、Ｃｒ−
旧、Ｆｅ−Ｃｒ−旧、５ｔｅｌｌｉｔｅ（Ｃｏ−Ｃｒ−
Ｗ）、Ｎ ｉ −Ｎｏ−１’ｌなとの合金を使用すれば
よい。In addition, examples of metals with a melting point higher than about 1000°C include:
C", old, pure metals such as Ti, Ta, Pt, Cr-
Old, Fe-Cr- Old, 5tellite (Co-Cr-
W), N i -No-1'l may be used.
さらに、上記金属とセラミックスとの複合材料としては
、例えば、窒化物、酸化物、炭化物を分散させた鉄合金
などを使用すればよい。Further, as the composite material of metal and ceramics, for example, an iron alloy in which nitrides, oxides, and carbides are dispersed may be used.
以上の被覆材料の中で、セラミックスの場合は窒化チタ
ンを、また、高融点金属の場合はクロム（特に硬質クロ
ムめっき）を用いると、フレーク状金属粉末の製造に好
ましい結果を与える。Among the above-mentioned coating materials, use of titanium nitride in the case of ceramics and chromium (particularly hard chromium plating) in the case of high-melting point metals gives preferable results in the production of flaky metal powder.
回転冷却体は、基材として、銅合金、鉄合金が好ましい
。また、セラミックス、金属、合金などでの被覆は、Ｉ
’ＶＤ、 ＣＶＤなとの蒸着法、電気めっき法などによ
り行えば十分である。The base material of the rotary cooling body is preferably a copper alloy or an iron alloy. In addition, coating with ceramics, metals, alloys, etc.
It is sufficient to use a vapor deposition method such as VD or CVD, or an electroplating method.
（作用）
以上のように、回転冷却体の表面をセラミックスや約１
０００℃より高融点金属またはこれらの複合体で被覆す
ると、液滴が衝突しても反応しないため、銅の冷却体の
場合より冷却体との濡れ性は悪くなり、液滴の融着が防
止される。また、冷却体の耐熱性も向上するため、水冷
する必要もない利点がある。(Function) As mentioned above, the surface of the rotary cooling body is made of ceramic or
When coated with a metal with a melting point higher than 000°C or a composite thereof, there is no reaction even when droplets collide, so wettability with the cooling body is worse than in the case of a copper cooling body, preventing droplet fusion. be done. Furthermore, since the heat resistance of the cooling body is improved, there is an advantage that there is no need for water cooling.
（実施例）
実施例１
第３図に示すフレーク状金属粉末製造方法において、回
転ロール６として、銅製ロール、セラミックス被覆ロー
ル、高融点金属被覆ロール（被覆厚はいずれも０．３〜
３μｌ１１）を使用してフレーク状金属粉末を製造した
。(Example) Example 1 In the flaky metal powder manufacturing method shown in FIG.
3 μl (11) was used to produce flaky metal powder.
金属溶湯としては、Ｃｏｔ２．ｓＳｉ＋□、ｓＢ＋ｓ（
原子％）の合金を用い、これをノズルより流出させて、
１００ Ｋｇ／ｃ＋ｎ２のガス噴射に上り液滴にし、回
転数５０００ ｒｐＩｆｌの回転ロールに衝突させた。As the molten metal, Cot2. sSi+□, sB+s(
atomic%) and let it flow out from the nozzle,
The liquid was formed into droplets by a gas jet of 100 Kg/c+n2, and was made to collide with a rotating roll having a rotational speed of 5000 rpm.
第１表にサイクロンで回収した金属粉末の粒径、回転ロ
ルへの液滴融着有無および結晶構造を示す。また、得ら
れた金属粉末を第１図に示す。Table 1 shows the particle size, presence or absence of droplet fusion on the rotating roll, and crystal structure of the metal powder collected by the cyclone. Moreover, the obtained metal powder is shown in FIG.
＝７
＝８−
第１表
実施例２
第４図に示すフレーク状金属粉末の製造方法において、
円錐型回転冷却体８に実施例１と同様のものを用いてフ
レーク状金属粉末を製造した。金属溶湯としては、実施
例１と同一のものを用い、同一ガス圧で液滴にした。ま
た、冷却体の回転数は７０００ ｒｐｍとした。第２表
にこの結果を示す。=7 =8- Table 1 Example 2 In the method for producing flaky metal powder shown in FIG.
A flaky metal powder was manufactured using the same conical rotary cooling body 8 as in Example 1. The same molten metal as in Example 1 was used, and it was made into droplets at the same gas pressure. Moreover, the rotation speed of the cooling body was 7000 rpm. Table 2 shows the results.
また、得られた金属粉末を第２図に示す。Moreover, the obtained metal powder is shown in FIG.
（発明の効果）
以上のように、溶湯の液滴を衝突させる回転冷却体をセ
ラミ／クスまたは銅より高融着金属で被覆すると、粒子
の回転冷却体への付着や粒子同志の結合が防止でき、結
果として、フレーク状金属粉末の粒径を小さくする効果
と粉末の収率を者しく向」ニさせる効果がある。(Effects of the invention) As described above, if the rotating cooling body that causes droplets of molten metal to collide with each other is coated with ceramic/gloss or a metal with a higher fusion bond than copper, adhesion of particles to the rotating cooling body and bonding of particles to each other can be prevented. As a result, it has the effect of reducing the particle size of the flaky metal powder and the effect of significantly improving the powder yield.
＃Ｓ１図および第２図は、それぞれ実施例１および２で
製造したフレーク状金属粉末の形状を示す電子顕微鏡写
真である。
第３図および第４図は、従来のフレーク状金属粉末の製
造方法を示すものである。
１・・・ルツボ、２・・・金属溶湯、３・・・流出ノズ
ル、４・・・超音波〃スアトマイズ装置、５・・吹き造
管、６・・・回転ロール、７・・・ガス噴射ノズル、８
・・・円鍾型回転冷却体、#S1 and 2 are electron micrographs showing the shapes of the flaky metal powders produced in Examples 1 and 2, respectively. FIGS. 3 and 4 show a conventional method for producing flaky metal powder. DESCRIPTION OF SYMBOLS 1... Crucible, 2... Molten metal, 3... Outflow nozzle, 4... Ultrasonic atomizing device, 5... Blowing pipe, 6... Rotating roll, 7... Gas Spray nozzle, 8
・・・Rotary rotary cooling body,
Claims (3)
液滴にした後、液滴を回転冷却体に衝突させてフレーク
状にする金属粉末の製造法において、前記回転冷却体の
表面をセラミックス、少なくとも１０００℃以上の高融
点金属またはこれらの複合体で被覆したことを特徴とす
るフレーク状急冷凝固金属粉末の製造法。(1) In a method for producing metal powder in which gas is injected into molten metal flowing out of a nozzle to form droplets, and the droplets are made to collide with a rotary cooling body to form flakes, the surface of the rotary cooling body is A method for producing flaky rapidly solidified metal powder, characterized in that it is coated with ceramics, a metal with a high melting point of at least 1000° C., or a composite thereof.
を特徴とする特許請求の範囲第１項に記載のフレーク状
急冷凝固金属粉末の製造法。(2) A method for producing flaky rapidly solidified metal powder according to claim 1, characterized in that the ceramic is coated with titanium nitride.
とする特許請求の範囲第１項に記載のフレーク状急冷凝
固金属粉末の製造法。(3) The method for producing flaky rapidly solidified metal powder according to claim 1, wherein the metal powder is coated with chromium as the high melting point metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15387688A JPH024906A (en) | 1988-06-22 | 1988-06-22 | Manufacture of flaky rapidly cooling solidified metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15387688A JPH024906A (en) | 1988-06-22 | 1988-06-22 | Manufacture of flaky rapidly cooling solidified metal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH024906A true JPH024906A (en) | 1990-01-09 |
Family
ID=15572044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15387688A Pending JPH024906A (en) | 1988-06-22 | 1988-06-22 | Manufacture of flaky rapidly cooling solidified metal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH024906A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224770A (en) * | 1990-12-08 | 1993-07-06 | Minnesota Mining And Manufacturing Company | Light box |
| JP2009504909A (en) * | 2005-08-12 | 2009-02-05 | ダンウィルコ（１１９８）リミテッド | Metal flake manufacturing method |
| JP2009062573A (en) * | 2007-09-05 | 2009-03-26 | National Institute For Materials Science | Rotary disk used for centrifugal atomization method, and centrifugal atomization method using the same |
| CN103934462A (en) * | 2014-05-22 | 2014-07-23 | 云南锡业股份有限公司 | Method for preparing special tin raw material for methyl tin mercaptide |
| JP2014205893A (en) * | 2013-04-15 | 2014-10-30 | 株式会社日向製錬所 | Manufacturing method of flaky ferronickel and manufacturing facility |
-
1988
- 1988-06-22 JP JP15387688A patent/JPH024906A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224770A (en) * | 1990-12-08 | 1993-07-06 | Minnesota Mining And Manufacturing Company | Light box |
| JP2009504909A (en) * | 2005-08-12 | 2009-02-05 | ダンウィルコ（１１９８）リミテッド | Metal flake manufacturing method |
| JP2009062573A (en) * | 2007-09-05 | 2009-03-26 | National Institute For Materials Science | Rotary disk used for centrifugal atomization method, and centrifugal atomization method using the same |
| JP2014205893A (en) * | 2013-04-15 | 2014-10-30 | 株式会社日向製錬所 | Manufacturing method of flaky ferronickel and manufacturing facility |
| CN103934462A (en) * | 2014-05-22 | 2014-07-23 | 云南锡业股份有限公司 | Method for preparing special tin raw material for methyl tin mercaptide |
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