JPS6342308A - Production of metal powder - Google Patents
Production of metal powderInfo
- Publication number
- JPS6342308A JPS6342308A JP61186391A JP18639186A JPS6342308A JP S6342308 A JPS6342308 A JP S6342308A JP 61186391 A JP61186391 A JP 61186391A JP 18639186 A JP18639186 A JP 18639186A JP S6342308 A JPS6342308 A JP S6342308A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- compressed gas
- flow rate
- powder
- metal powder
- 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 64
- 239000002184 metal Substances 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001235 nimonic Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は金属粉末の製造方法に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for producing metal powder.
（従来の技術とその問題点）
溶湯金属を粉化することによって金属粉末を製造する方
法としては、溶湯金属流に圧縮ガスを吹き付けることに
よって溶湯金属を飛散させて粉末化する噴霧法が広く知
られている。(Prior art and its problems) As a method for manufacturing metal powder by pulverizing molten metal, the spray method is widely known, in which compressed gas is sprayed onto a molten metal flow to scatter the molten metal and turn it into powder. It is being
これは、溶解可能な金属、例えば鉛、亜鉛。This includes soluble metals such as lead and zinc.
アルミニウム、銅、ニッケル、鉄等の単体から銅−亜鉛
、ステンレス鋼或いはニモニック等の合金粉末にいたる
までの広い範囲に製造することができる他原材料の制御
によって一定の性状の粉末を大量に製造できることが特
徴である。It can produce a wide range of powders, from simple substances such as aluminum, copper, nickel, and iron to alloy powders such as copper-zinc, stainless steel, and nimonic.It is also possible to produce large quantities of powder with fixed properties by controlling the raw materials. It is characterized by
又、この噴霧法によって粉末を製造する場合には溶湯流
がどのようにして飛散し、粉末化されるという機構が最
も重要なことであり、その状態を把握することが粉末の
性状、即ら粒石分布及び粉末の形状等を知るためには最
も必要なことである。In addition, when producing powder using this spraying method, the most important thing is the mechanism of how the molten metal flow is scattered and turned into powder, and understanding this state is important in determining the properties of the powder, i.e. This is the most necessary thing to know the grain size distribution, powder shape, etc.
しかし乍ら、その噴霧状態、叩ち溶湯流が圧縮ガスによ
って粉化される状態は、溶湯金属の物理的性質、ガスの
噴用角度、ガスの噴出流速。However, the spray state and the state in which the beaten molten metal flow is pulverized by the compressed gas depend on the physical properties of the molten metal, the gas jetting angle, and the gas jetting flow rate.
ガス環帯の幅等の諸条件によって左右されるため、その
噴霧状態を適確に掴むということは非常に難しかった。It has been extremely difficult to accurately grasp the spray state, as it depends on various conditions such as the width of the gas annulus.
そのため、従来の製造方法では、微細な金属粉末が得ら
れないばかりか、分布が大きすぎるため球状の大きさが
一定しないという問題があった。Therefore, in the conventional manufacturing method, there was a problem that not only fine metal powder could not be obtained, but also that the spherical size was not constant because the distribution was too large.
そこで、本発明者は噴霧法について仔細に観察検討した
結果、前記諸条件のうち特にガスの噴射角度、ガスの噴
出流速及び溶湯金属流量とガス流団との比が、上記金属
溶湯の噴霧状態を適確に掴む上で非常に重要であると共
に、微細で且つ一定の大きさの球状の金属粉末の製造に
多大の影響を及ぼすことを発見した。Therefore, as a result of detailed observation and study regarding the spraying method, the present inventor found that among the various conditions mentioned above, in particular, the gas injection angle, the gas injection flow rate, and the ratio of the molten metal flow rate to the gas stream are It has been discovered that this is very important in accurately gripping metal powder, and that it has a great influence on the production of fine, spherical metal powder of a certain size.
（発明が解決しようと覆る技術課題）
以上の問題を解決しようとする本発明の技術的課題は、
微細でｈつ大きさが一定した球状の金属粉末を製造する
ために、噴霧法におけるガスの噴射角度、ガスの噴出流
速及び溶湯金属流量とガス流量との比を所定の値に設定
することである。(Technical problem that the invention attempts to solve) The technical problem of the present invention that attempts to solve the above problems is as follows.
In order to produce fine, spherical metal powder with a constant size, the gas injection angle, gas ejection flow rate, and ratio of molten metal flow rate to gas flow rate in the atomization method are set to predetermined values. be.
（技術的課題を達成するための技術的手段）以上の技術
的課題を達成するための本発明の技術的手段は、細孔よ
り流出せる溶湯金属に圧縮ガスを噴射して溶湯を粉化し
て飛散させると共に、該粉化して飛散させた溶湯を回収
容器内を落下さけて金属粉末を製造する方法において、
該溶湯金属流に対する圧縮ガスの噴射角度を２０〜５０
ｒｇ１、圧縮ガスの噴出流速を１５０ＴｒＬ／Ｓ〜３０
０ｍ／Ｓ、溶湯金ｇｆ４流ａと圧縮ガス流量との比を０
．００１〜０．００３に設定することであり、圧縮ガス
の噴射角度が２０度未満の場合は球形の大きさの分布が
大きすぎるため球形の大きさが一定りす、５０度を越え
ると吹き上げの原因になって溶湯金属流が逆流するおそ
れがある。又、圧縮ガスの噴出流速が３００ｍ／Ｓを越
えると溶湯金属流の微細化にはほとんど影響を与えない
が、１５０ｍ／Ｓ未満の場合は微細化しない。(Technical means for achieving the technical problem) The technical means of the present invention for achieving the above-mentioned technical problem is to inject compressed gas to the molten metal flowing out from the pores to powderize the molten metal. In a method for manufacturing metal powder by scattering and avoiding falling of the powdered and scattered molten metal into a collection container,
The injection angle of the compressed gas with respect to the molten metal flow is 20 to 50.
rg1, the ejection flow rate of compressed gas is 150TrL/S ~ 30
0 m/S, the ratio of molten gold gf4 flow a and compressed gas flow rate to 0
．． If the injection angle of the compressed gas is less than 20 degrees, the distribution of the spherical size will be too large and the spherical size will remain constant, and if it exceeds 50 degrees, it will cause blow-up. This may cause the molten metal to flow backwards. Further, if the ejection flow velocity of the compressed gas exceeds 300 m/s, it will hardly affect the refinement of the molten metal flow, but if it is less than 150 m/s, the refinement will not occur.
更に、溶湯金属流量と圧縮ガスｌｙｔｍとの比が０．０
０１未満の場合は溶湯金属流の微細化には全く影響を与
えないが、０．００３を越えると微細化をしなくなる。Furthermore, the ratio of the molten metal flow rate to the compressed gas lytm is 0.0.
If it is less than 0.01, it will not affect the refinement of the molten metal flow at all, but if it exceeds 0.003, it will not be refined.
（発明の効果）
本発明は以上の様に金属粉末の製造方法において、溶湯
金属流に対する圧縮ガスの噴射角度を２０〜５０度、圧
縮ガスの噴出流速を１５０７７ｉＬ／Ｓ〜３００７７Ｌ
／Ｓ、溶湯金属流量と圧縮ガス流量との比を＜１．００
１〜０．００３に設定したことにより、微細で且つ一定
の大きさの球状の金属粉末を製造することができる。(Effects of the Invention) As described above, the present invention provides a method for producing metal powder, in which the injection angle of the compressed gas with respect to the molten metal flow is 20 to 50 degrees, and the injection flow rate of the compressed gas is 15077iL/S to 30077L.
/S, the ratio of molten metal flow rate to compressed gas flow rate is <1.00
By setting it to 1 to 0.003, it is possible to produce fine, spherical metal powder of a constant size.
（実施例） 以下、本発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.
本発明の金属粉末（ｍ）は図示する製造装置（Ａ）で製
造されるものであり、該製造装置（Ａ）は溶湯金属（ｎ
）を貯湯するための溶湯槽（１）と、該溶湯金属（ｎ＞
を粉化して飛散させる噴ｎ５Ａ置（２）と、該粉化して
飛散された金属粉末（ｍ）を回収するための回収容器（
３）とからなる。The metal powder (m) of the present invention is manufactured by a manufacturing apparatus (A) shown in the figure, and the manufacturing apparatus (A) is a molten metal (n
) and a molten metal tank (1) for storing the molten metal (n>
a sprayer (2) for pulverizing and scattering the metal powder (m); and a collection container (2) for recovering the pulverized and scattered metal powder (m);
3).
溶湯金属（ｎ）は噴霧法により金属粉末（ｍ＞を製造し
得る金属一般を全て含むものであり、特に鉛、亜鉛、ア
ルミニウム、銅、ニッケル。Molten metal (n) includes all metals in general from which metal powder (m) can be produced by a spraying method, particularly lead, zinc, aluminum, copper, and nickel.
鉄等が対采とされる。Steel, etc. are considered to be the countermeasures.
該溶湯金１ｉ１（ｎ）は貯湯槽（１）の溶湯ルツボ（１
ａ）内に貯湯され、該ルツボ底面に突設した溶湯ノズル
（１ｂ）を通って流出し、噴霧装置（２）におけるガス
ノズル（２ａ）から噴射する圧縮ガス（Ｓ）により回収
容器内に粉化飛散されて金属粉末（ｍ＞を形成するもの
である。The molten gold 1i1(n) is placed in the molten metal crucible (1) of the hot water storage tank (1).
The molten metal is stored in a), flows out through a molten metal nozzle (1b) protruding from the bottom of the crucible, and is pulverized into a collection container by compressed gas (S) injected from a gas nozzle (2a) in a spray device (2). It is scattered to form metal powder (m>).
又、溶湯金属（ｎ）は溶湯ルツボ（１ａ）周囲に設けた
保温装置（４）により融点にできるだけ近い噴霧化の可
能な温度に保温され、溶湯ルツボ〈１ａ）の流出口（１
Ｃ）に上下動自在に設けた間開棒（５）によりその流出
量が調整される。In addition, the molten metal (n) is kept at a temperature as close as possible to the melting point at which it can be atomized by the heat insulating device (4) provided around the molten metal crucible (1a), and the molten metal (n) is kept at a temperature as close as possible to the melting point at which it can be atomized.
The outflow amount is adjusted by the spacing rod (5) provided in C) so as to be movable up and down.
圧縮ガス（Ｓ）は酸素濃度が８％以下でｎつ湿度が３０
％以下の空気、アルゴン、窒素、 ＣＯ２等の不活性ガ
スが用いられ、供給管（６）内に配設した電熱線（７）
により加熱されてガスノズル（２ａ）から噴射される。Compressed gas (S) has an oxygen concentration of 8% or less and a humidity of 30%.
% or less of air, argon, nitrogen, CO2, or other inert gas is used, and the heating wire (7) is installed inside the supply pipe (6).
The gas is heated by the gas nozzle (2a) and injected from the gas nozzle (2a).
このように、圧縮ガス（Ｓ）を加熱するのは、粉化され
た金属が冷却され凝固り“るまでの時間を長くとり表面
張力の働く機会を多くすることにより、その形状を球形
にしようとするためである。In this way, heating the compressed gas (S) increases the time it takes for the powdered metal to cool and solidify, giving more opportunities for surface tension to act, thereby making the shape spherical. This is for the purpose of
又、圧縮ガス（Ｓ）の噴射角度を２０度〜５０度、圧縮
ガスの噴出流速を１５０ｍ／Ｓ〜３００ＴｒＬ／Ｓ１溶
湯金属流吊と圧縮ガス滝川との比を０．００１〜０、０
０３とすることにより一定の大きさ、即ち５０μ瓦程度
の球状粉が得られる。In addition, the injection angle of the compressed gas (S) is 20 degrees to 50 degrees, the injection flow velocity of the compressed gas is 150 m/S to 300 TrL/S1, and the ratio between the molten metal flow and the compressed gas Takigawa is 0.001 to 0.0.
By setting the powder to 03, spherical powder of a certain size, that is, about 50 micrometers, can be obtained.
回収容器（３）は気密性に優れたものであり、その内部
は酸素濃度が８％以下で且つ湿度が３０％以下に保持さ
れている。The recovery container (3) has excellent airtightness, and the oxygen concentration inside thereof is maintained at 8% or less and the humidity is maintained at 30% or less.
従って、酸素１１８％以下、湿度３０％以下の雰囲気で
粉化して飛散された溶湯金属（ｎ）は、これらが凝固し
終るまで酸素及び湿度との接触を最小限に絶たれ、表面
に酸化物が生成されず且つ水分（湿気）が付着しない状
態で表面張力により球状化される。Therefore, the molten metal (n) that is powdered and scattered in an atmosphere with oxygen of 118% or less and humidity of 30% or less is kept from contact with oxygen and humidity to a minimum until it solidifies, and oxides are formed on the surface. is formed into spheres due to surface tension in a state where no water (humidity) is formed and no moisture is attached.
そして、回収容器（３）底部の選別器（３ａ）により各
種の大きさの粉末にふるい分４ノられて回収される。Then, the powder is sieved into four sieves of various sizes by the sorter (3a) at the bottom of the collection container (3) and collected.
数表は半田溶湯を用いて試験した結果を示したちのであ
る。The numerical table shows the results of tests using molten solder.
表
依って、前記発明の効果である微細で且つ一定の大きさ
の球状の金属粉末を製造することができることを確認す
ることができた。Accordingly, it was confirmed that it was possible to produce fine, spherical metal powder of a certain size, which is an effect of the invention.
図面は金属粉末の製造装置の断面図である。 尚、図中 （ｎ）：溶湯金属 （Ｓ）：圧縮ガス （ｍ）：金属粉末 を夫々示す。 The drawing is a cross-sectional view of a metal powder manufacturing apparatus. In addition, in the figure (n): Molten metal (S): Compressed gas (m): Metal powder are shown respectively.
Claims (1)
粉化して飛散させると共に、該粉化して飛散させた溶湯
を回収容器内を落下させて金属粉末を製造する方法にお
いて、該溶湯金属流に対する圧縮ガスの噴射角度を２０
〜５０度、圧縮ガスの噴出流速を１５０ｍ／ｓ〜３００
ｍ／ｓ、溶湯金属流量と圧縮ガス流量との比を０．００
１〜０．００３に設定したことを特徴とする金属粉末の
製造方法。In a method of manufacturing metal powder by injecting compressed gas to molten metal flowing out from a pore to powder and scatter the molten metal, and allowing the powdered and scattered molten metal to fall inside a collection container, the molten metal is The injection angle of compressed gas with respect to the flow is 20
~50 degrees, compressed gas jet flow velocity 150 m/s ~ 300
m/s, the ratio of molten metal flow rate to compressed gas flow rate is 0.00
A method for producing metal powder, characterized in that the value is set to 1 to 0.003.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61186391A JPS6342308A (en) | 1986-08-07 | 1986-08-07 | Production of metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61186391A JPS6342308A (en) | 1986-08-07 | 1986-08-07 | Production of metal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6342308A true JPS6342308A (en) | 1988-02-23 |
Family
ID=16187575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61186391A Pending JPS6342308A (en) | 1986-08-07 | 1986-08-07 | Production of metal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180047699A (en) * | 2016-11-01 | 2018-05-10 | (주)아모레퍼시픽 | Cosmetic container having a cosmetic tool on button |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5747804A (en) * | 1980-09-04 | 1982-03-18 | Sumitomo Metal Ind Ltd | Production of metallic powder |
| JPS6082604A (en) * | 1983-10-12 | 1985-05-10 | Unitika Ltd | Manufacture of amorphous metallic granular powder |
-
1986
- 1986-08-07 JP JP61186391A patent/JPS6342308A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5747804A (en) * | 1980-09-04 | 1982-03-18 | Sumitomo Metal Ind Ltd | Production of metallic powder |
| JPS6082604A (en) * | 1983-10-12 | 1985-05-10 | Unitika Ltd | Manufacture of amorphous metallic granular powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180047699A (en) * | 2016-11-01 | 2018-05-10 | (주)아모레퍼시픽 | Cosmetic container having a cosmetic tool on button |
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