JPS63169309A - Apparatus for producing alloy powder - Google Patents
Apparatus for producing alloy powderInfo
- Publication number
- JPS63169309A JPS63169309A JP53687A JP53687A JPS63169309A JP S63169309 A JPS63169309 A JP S63169309A JP 53687 A JP53687 A JP 53687A JP 53687 A JP53687 A JP 53687A JP S63169309 A JPS63169309 A JP S63169309A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- electrodes
- alloy powder
- droplets
- alloy
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 60
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 54
- 239000000956 alloy Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 23
- 238000000034 method Methods 0.000 description 22
- 239000007789 gas Substances 0.000 description 6
- 238000011109 contamination Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000004663 powder metallurgy Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000009689 gas atomisation Methods 0.000 description 4
- 238000005551 mechanical alloying Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000000790 scattering method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
この発明は、粉末冶金等に使用する金属粉末を製造する
合金の粉末製造装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an alloy powder manufacturing apparatus for manufacturing metal powder used in powder metallurgy and the like.
［従来の技術］
粉末冶金は、金属又は合金の粉末を型に装入して加圧成
形し、次いでこの成形体を焼結させることにより金属製
品又は金属塊を製造する技術である。粉末冶金において
は、成分元素の偏析が起らないこと、難加工材料の製品
化が可能なこと、極めて微細な結晶組織を有する部材が
得られること、非平衡相を現出させることが可能なこと
等、溶製材では得ることができない種々の利点があり、
また、二次的な切削加工を省略できるという利点がある
。このため、粉末冶金に適用される種々の粉末製造技術
が開発されている。[Prior Art] Powder metallurgy is a technology for manufacturing metal products or metal ingots by charging metal or alloy powder into a mold, press-molding it, and then sintering the molded body. In powder metallurgy, segregation of component elements does not occur, it is possible to commercialize materials that are difficult to process, it is possible to obtain parts with extremely fine crystal structures, and it is possible to make non-equilibrium phases appear. There are various advantages that cannot be obtained with melted lumber, such as:
Further, there is an advantage that secondary cutting can be omitted. For this reason, various powder manufacturing techniques applied to powder metallurgy have been developed.
これまでに開発されている合金の粉末製造技術を大別す
ると目的合金の組成である複数の金属粉末を別々に製造
し、これを混合して均一な合金粉末を得る機械的合金化
法、溶解、精錬により目的合金の溶湯を製造し、これよ
り直接合金粉末を得る溶湯粉末法、目的合金の固体を製
造し、これを部分的に溶融滴下して合金粉末を得る溶融
滴下法がある。The alloy powder production technologies that have been developed so far can be roughly divided into mechanical alloying methods, which produce a plurality of metal powders with the composition of the target alloy separately, and then mix them to obtain a uniform alloy powder, and melting. There are two methods: 1. A molten powder method in which a molten metal of the target alloy is produced by refining and an alloy powder is obtained directly from the molten metal, and a molten dropping method in which a solid of the target alloy is produced and partially melted and dripped to obtain an alloy powder.
機械的合金化法は、第２図に示すように目的合金の組成
となる各金属粉末を一緒にして例えば鋼球とともに水冷
タンク１に装入し攪拌羽根２を回転させて各金属粉末３
に圧着、粉砕を繰返して均一に分散した合金粉末を得る
ものである。In the mechanical alloying method, as shown in Fig. 2, each metal powder having the composition of the target alloy is charged together with, for example, a steel ball into a water-cooled tank 1, and a stirring blade 2 is rotated to separate each metal powder 3.
By repeating pressing and crushing, a uniformly dispersed alloy powder is obtained.
溶湯粉末法は代表的なものとしてガス噴霧法とディスク
飛散法がある。第３図にガス噴霧法、第４図にディスク
飛散法を示すが、いずれもるつぼ４に入れた目的合金の
組成をもつ溶湯５をるつぼ４の下部に設けたノズル６か
ら落下させる。次いでガス噴霧法では溶湯５の落下流７
に例えばアルゴンまたはヘリウムなどの不活性ガス９を
吹付けて溶湯を噴霧化する。一方、ディスク飛散法では
落下流７を高速で回転するディスク９上に落下させディ
スクの回転の遠心力により溶湯を飛散して合金粉末１ｏ
を製造している。Typical molten metal powder methods include the gas atomization method and the disk scattering method. FIG. 3 shows the gas atomization method, and FIG. 4 shows the disk scattering method, in which a molten metal 5 having the composition of the target alloy placed in a crucible 4 is dropped from a nozzle 6 provided at the bottom of the crucible 4. Next, in the gas atomization method, the falling flow 7 of the molten metal 5
The molten metal is atomized by spraying an inert gas 9 such as argon or helium onto the molten metal. On the other hand, in the disk scattering method, the falling stream 7 is dropped onto a disk 9 rotating at high speed, and the molten metal is scattered by the centrifugal force of the rotation of the disk.
is manufactured.
溶湯滴下法としては第５図に模式図で示したように消耗
電極１１と目的合金の組成をもつ非消耗電極１２の間に
アーク１３を形成し、この際に消耗電極１１をモータ等
の回転手段（図示せず）で高速に回転させて消耗電極が
溶融して生成する液滴１４を飛散させて合金粉末をつく
る回転電極法と、第６図に示すように高速回転可能に設
置されたディスク１５と目的合金の組成をもつ消耗電極
１１との間にアーク１３を形成する遠心造粒法が知られ
ている。後者の方法ではディスク１５は第４図のディス
ク９と異なり、高速回転の他に電極としての機能をもつ
もので、通常その上面は銅製で水冷されたものである。In the molten metal dropping method, an arc 13 is formed between a consumable electrode 11 and a non-consumable electrode 12 having the composition of the target alloy, as shown schematically in FIG. There is a rotating electrode method in which the consumable electrode is rotated at high speed by a means (not shown) to scatter the droplets 14 generated by melting the consumable electrode to create alloy powder, and the other is a rotating electrode method in which the consumable electrode is rotated at high speed by a means (not shown) to create alloy powder. A centrifugal granulation method is known in which an arc 13 is formed between a disk 15 and a consumable electrode 11 having the composition of the target alloy. In the latter method, the disk 15 differs from the disk 9 in FIG. 4 in that it rotates at high speed and also functions as an electrode, and its upper surface is usually made of copper and water-cooled.
このディスク１５を高速回転させ′Ｒ極１１が溶融して
形成されだ液滴１４をディスク１５内に滴下することに
より液滴１４を飛散させて合金粉末を得る。The disk 15 is rotated at high speed, and the droplets 14 formed by melting the R pole 11 are dropped into the disk 15, thereby scattering the droplets 14 to obtain alloy powder.
［発明が解決しようとする問題点］
しかしながら、機械的合金化法では目的の合金粉末の成
分に応じて２種以上の金属粉末を予め準備する必要があ
り、溶融滴下法（第５図、第６図）では消耗電極は目的
の合金粉末と同じ成分のものを必要とし、これを予め溶
解、精錬を経て電極に加工する工程が不可欠であるので
製造工程が複雑で製造コストが高くなる。[Problems to be Solved by the Invention] However, in the mechanical alloying method, it is necessary to prepare in advance two or more types of metal powder depending on the components of the target alloy powder, and the melt dropping method (Fig. 5, In Figure 6), the consumable electrode needs to have the same composition as the target alloy powder, and the process of melting and refining this in advance to process it into an electrode is essential, making the manufacturing process complicated and the manufacturing cost high.
溶湯粉末法（第３図、第４図）ではるつぼ４、ノズル５
から、さらにガス噴霧法ではガスから不純物が混入する
のでＴｉ、Ｔｉ合金、高合金または超合金用粉末などの
高純度の粉末を製造することが困難である。なお、機械
的合金化法も金属粉末を混合するための水冷タンク１、
攪拌羽根２などから不純物の混入があって溶湯粉末法と
同様の問題点を抱えている。In the molten metal powder method (Figures 3 and 4), crucible 4 and nozzle 5 are used.
Furthermore, in the gas atomization method, impurities are mixed in from the gas, making it difficult to produce high-purity powders such as powders for Ti, Ti alloys, high alloys, or superalloys. Note that the mechanical alloying method also uses a water-cooled tank 1 for mixing metal powder,
This method has the same problem as the molten metal powder method due to the contamination of impurities from the stirring blade 2 and the like.
溶融滴下法く第５図、第６図）では上記のような問題は
比較的少ないが目的合金で作られる消耗電極１１または
１ｉＦｉとして作用する水冷の銅製ディスク１５は粒径
の小さい粉末を得るために高速回転させる必要があるが
、これらの電極を高速で回転させるためには電極の加工
精度上および回転機構上さらに電力の供給の点で技術的
な困難を伴う。In the molten dropping method (Figs. 5 and 6), the above-mentioned problems are relatively rare, but the consumable electrode 11 made of the target alloy or the water-cooled copper disk 15 acting as 1iFi is used to obtain powder with a small particle size. However, in order to rotate these electrodes at high speed, there are technical difficulties in terms of the processing accuracy of the electrodes, the rotation mechanism, and the power supply.
この発明はかかる事情に鑑みてなされたもので、予め、
目的の合金粉末と同じ組成の消耗電極を製造する必要が
なく、また、るつぼその他から不純物の混入の虞がなく
、さらに粉末製造装置に機械的、電気的な問題点のない
合金の粉末製造装置を提供することを目的とする。This invention was made in view of such circumstances, and in advance,
An alloy powder manufacturing device that does not require manufacturing consumable electrodes with the same composition as the target alloy powder, has no risk of contamination with impurities from crucibles or other sources, and has no mechanical or electrical problems with the powder manufacturing device. The purpose is to provide
［問題点を解決するための手段］
この発明に係る合金の粉末製造装置は合金の液滴を生成
して落下させる液滴生成手段と、この液滴生成手段から
の液滴が当たる位置に配置されたディスクと、ディスク
を回転させる回転手段とを有し、ディスク上に落下させ
た液滴をディスクの回転により飛散させて合金粉末を製
造する粉末の製造装置において、前記液滴生成手段は対
向して配置した複数対の電極と、対向する電極間に電圧
を印加してアークを形成しアーク熱により電極を溶融し
て液滴を落下させるアーク形成手段とを有し、前記複数
対の電極対のうち一部の電極対は製造する合金組成の一
部の組成からなる同一素材で形成され、また他の電極対
は少なくとも上記合金組成の残りの組成を有する同一素
材で形成され、各電極対間で形成された液滴がディスク
上で混合されて製造する合金組成の液滴となるようにし
たことを特徴とする。[Means for Solving the Problems] The alloy powder manufacturing apparatus according to the present invention includes a droplet generating means for generating and dropping alloy droplets, and a droplet generating means disposed at a position where the droplets from the droplet generating means hit. In the powder manufacturing apparatus, the powder manufacturing apparatus includes a disk having a cylindrical shape and a rotation means for rotating the disk, and manufactures alloy powder by scattering droplets dropped onto the disk by rotation of the disk, wherein the droplet generation means is arranged in a direction opposite to each other. a plurality of pairs of electrodes disposed in the same direction, and an arc forming means for forming an arc by applying a voltage between the opposing electrodes, melting the electrodes by arc heat and causing droplets to fall; Some of the electrode pairs are formed of the same material having a part of the alloy composition to be manufactured, and other electrode pairs are formed of the same material having at least the remaining composition of the alloy composition, and each electrode It is characterized in that the droplets formed between the pairs are mixed on the disk to form droplets of the alloy composition to be produced.
［作 用］
この発明においては、二対以上の電極間にそれぞれアー
クを形成させ、このアークにより電極が溶融して生成し
た液滴を回転しているディスク上に落下させる。そうす
ると、この液滴はディスク上で混合して合金となりディ
スクの回転による遠心力により周囲に飛散し、瞬時に冷
却して合金の粉末となる。[Function] In the present invention, arcs are formed between two or more pairs of electrodes, and the electrodes are melted by the arcs to cause droplets generated to fall onto a rotating disk. Then, the droplets mix on the disk to form an alloy, which is scattered around by the centrifugal force caused by the rotation of the disk, and is instantaneously cooled to become an alloy powder.
［実施例１
以下、添付図面を参照して、この発明について具体的に
説明する。第１図は、この発明の実施例に係る合金の粉
末製造装置である。チャンバー５０は真空ポンプ等の排
気手段（図示せず）に接続されており、また、ガス導入
口５１が設けられていて、その内部は減圧下に、又は、
アルゴンガス若しくはヘリウムガス雰囲気下に保持され
るようになっている。チャンバー５０内には各々異なる
素材の二対のＩｔｌｉ３１．３２がそれぞれ適長間隔を
おき、電極の長手方向の軸が一致して配置されており、
また、二対の電極の長手方向の軸は平行かつ上下の関係
位置に配置されている。[Example 1] Hereinafter, the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 shows an apparatus for manufacturing alloy powder according to an embodiment of the present invention. The chamber 50 is connected to an evacuation means (not shown) such as a vacuum pump, and is also provided with a gas inlet 51, so that the inside thereof is under reduced pressure or
It is maintained under an argon gas or helium gas atmosphere. Inside the chamber 50, two pairs of Itli 31, 32, each made of different materials, are arranged with an appropriate length interval between them, and the longitudinal axes of the electrodes coincide with each other.
Further, the longitudinal axes of the two pairs of electrodes are arranged in parallel and in a vertical relationship.
例えば目的の合金粉末として粉末冶金で製造される航空
機部材の原料として注目されているＴｉ−ＡＪ１合金（
Ｔｉ：６４ｗｔ％、ＡＪｌ：３６ｗｔ％）の粉末を製造
する場合には二対の電極３１．３２の材料としてそれぞ
れＩ！ｉＴｉ、ＮＡＬを使用する。For example, the Ti-AJ1 alloy, which is attracting attention as a raw material for aircraft parts manufactured by powder metallurgy as a target alloy powder (
When manufacturing powders of Ti: 64 wt% and AJl: 36 wt%), I! Use iTi, NAL.
′ＲＮ極１．３２にはそれぞれ電源５２．５３から直流
電流が供給され、アーク３３が形成される。DC current is supplied to the RN poles 1.32 from the power sources 52.53, respectively, and an arc 33 is formed.
このとき電極３１．３２の対向端部でそれぞれ生成され
る液１３４．３５が上下に重なって落下するようにする
ことが望ましく、また電極の消耗に応じて電極３１．３
２の位置、間隔を制御するために図示しない公知の電極
駆動機構および電極の位置検出器をそれぞれに装備する
とよい。At this time, it is desirable that the liquids 134, 35 generated at the opposite ends of the electrodes 31, 32 fall vertically, and the liquids 134, 35 that are generated at the opposite ends of the electrodes 31, 32 fall, and as the electrodes wear out, the electrodes 31, 32
In order to control the positions and intervals of the electrodes 2 and 2, it is preferable to equip each of them with a known electrode drive mechanism and an electrode position detector (not shown).
さらに２対の電極３１．３２をそれぞれ別箇に消耗量を
制御するため電？１！５２．５３にそれぞれ電流制御Ｉ
表装置図示せず）が設けられ、またＮ極３１．３２の対
向端部の消耗量、すなわち溶解ｌが対向端面内で一様に
なるように、電極の長手軸を中心とする回転装置（図示
せず）を備えている。Furthermore, two pairs of electrodes 31 and 32 are used to control the amount of consumption separately. 1!52.53 respectively current control I
A rotation device (not shown) about the longitudinal axis of the electrode is provided, and a rotating device (not shown) is provided, and a rotation device ( (not shown).
電極３１．３２の下方にはディスク３６が、その面を上
方に向けて回転可能に設置されており、回転装置３７に
より垂直軸３８を中心として例えば１０．０００〜３０
，０００ｒｐｍの回転数で高速回転される。Below the electrodes 31, 32, a disk 36 is rotatably installed with its surface facing upward, and is rotated by a rotating device 37 around a vertical axis 38, for example from 10,000 to 30,000 yen.
,000 rpm.
ディスク上面は中心に向って凹状の形状をしている銅製
のもので、内側から水冷されるように構成するとよい。The upper surface of the disk is made of copper and has a concave shape toward the center, and is preferably configured to be water-cooled from the inside.
このように構成された合金の粉末製造装置においては電
１５２．５３により電極３１．３２に給電してアーク３
３を形成し、このアーク３３により電極３１．３２の対
向端部を溶融させる。このようにして電極３１．３２が
溶融して生成した液滴３４．３５はそれぞれ電極３１．
３２と同じ素材の金属であるが、電極駆動機構および電
極位置検出器により電極３１．３２の対向端部が常に上
下に重なるように調整されるので、前記２種の液滴３４
．３５は下方に設置されたディスク３６上のほぼ同じ位
置に落下する。ディスク３６上面は中心に向って凹にな
っており、また回転装置３８により１５．ＯＯＯｒｌ）
ｍで回転させるのでディスク３６上面のほぼ同じ位置に
落下した２種の液滴３４．３５はディスク３６上面でよ
く混合され、ディスク３６の回転の遠心力により飛散す
るとともに凝固して合金粉末３９が得られる。In the alloy powder manufacturing apparatus constructed in this way, electric power is supplied to the electrodes 31.32 by the electric current 152.53, and the arc 3
3, and this arc 33 melts the opposite ends of the electrodes 31,32. The droplets 34 and 35 generated by melting the electrodes 31 and 32 in this manner are respectively attached to the electrodes 31 and 34.
Although the electrodes 31 and 32 are made of the same material as the metal, the two types of droplets 34
．． 35 falls to approximately the same position on the disk 36 installed below. The upper surface of the disk 36 is concave toward the center, and the rotation device 38 rotates the disk 36 at 15. OOOrl)
Since the rotation is performed at a speed of m, the two types of droplets 34 and 35 that have fallen at almost the same position on the top surface of the disk 36 are mixed well on the top surface of the disk 36, and are scattered and solidified by the centrifugal force of the rotation of the disk 36, forming an alloy powder 39. can get.
このように、目的の合金粉末の組成に応じた２種類の金
属で二対の消耗電極を使用しているので、予め前記２種
類の金属粉末を用意する必要がないので製造工程が軽減
される。また、るつぼ、ガス、消耗電極および粉末混合
用の水冷タンク、攪拌羽根などからの不純物の混入がな
く、粉末に対する汚染源が極めて少ない。また、電極を
高速回転する必要がないので装置の機構上、その製造、
保守が容易である。In this way, since two pairs of consumable electrodes are used with two types of metals depending on the composition of the target alloy powder, there is no need to prepare the two types of metal powders in advance, which reduces the manufacturing process. . In addition, there is no contamination of impurities from the crucible, gas, consumable electrodes, water-cooled tank for powder mixing, stirring blades, etc., and there are extremely few sources of contamination of the powder. In addition, since there is no need to rotate the electrode at high speed, the manufacturing process and
Easy to maintain.
なお、相対向する電極３１．３２をそれぞれ互いに同一
方向または反対方向に緩やかに回転させる回転装置を設
けることにより、電極３１．３２の対向端部が均一に溶
融し、アーク３３の形成に好ましい状態になる。Note that by providing a rotation device that gently rotates the opposing electrodes 31 and 32 in the same direction or in opposite directions, the opposing ends of the electrodes 31 and 32 are melted uniformly, which is a favorable condition for forming the arc 33. become.
次にこの実施例により実際に粉末を製造した具体例につ
いて説咀する。Next, we will discuss a specific example in which powder was actually produced using this example.
２対の電極材料はＴｉおよびＡＪｌとし電極の直径はい
づれも８０ｍφである。電極に通ずる電流はＴｉ電極に
４０００Ａ、ＡＬ電極に１８００Ａとしてアークを形成
させ、Ｔｉおよび八−乙の電極の対向端部から溶融した
液滴を１５．ＯＯＯｒｐｍで回転させたディスク上に落
下させたところ、液滴が周囲に飛散し、平均粒径２００
ｔ、１１１１合金粉末を得ることができた。この合金粉
末の組成はＴｉが６４ｗｔ％、Ａ１が３６ｗｔ％で、均
一に合金化されており、偏析は認められなかった。The materials of the two pairs of electrodes are Ti and AJl, and the diameters of both electrodes are 80 mφ. The current flowing through the electrodes was 4000 A for the Ti electrode and 1800 A for the AL electrode to form an arc, and the melted droplets were drawn from the opposite ends of the Ti and 8-Otsu electrodes at 15. When dropped onto a disk rotated at OOOrpm, droplets were scattered around and the average particle size was 200.
t, 1111 alloy powder could be obtained. The composition of this alloy powder was 64 wt% Ti and 36 wt% A1, and it was uniformly alloyed, and no segregation was observed.
液滴の性質、ディスク上面の凹状の形状によっては必ず
しもディスク上面の同じ場所に２種の液滴３４．３５が
落下しなくても十分混合されるので、上記実施例のよう
に２対の電極は上下の関係位置にあることを要しない。Depending on the nature of the droplets and the concave shape of the top surface of the disk, two types of droplets 34, 35 may not necessarily fall at the same location on the top surface of the disk to be sufficiently mixed, so two pairs of electrodes are used as in the above embodiment. do not need to be in a vertical position.
［発明の効果］
この発明によれば複数対の消耗電極を使用するので、目
的の合金粉末と同じ組成の消耗電極または混合用粉末を
製造する必要がなく、るつぼ等を使用せず電場間に発生
するアーク熱により直接溶融して液滴を作るので不純物
混入の虞がなく、また、電極として作用する高速回転デ
ィスクを使用しないので機械的電気的に問題のない合金
の粉末製造装置を得ることができる。[Effects of the Invention] According to the present invention, since multiple pairs of consumable electrodes are used, there is no need to manufacture consumable electrodes or mixing powders having the same composition as the target alloy powder. To obtain an apparatus for producing alloy powder that is directly melted to form droplets by the generated arc heat, so there is no risk of contamination with impurities, and also has no mechanical or electrical problems because it does not use a high-speed rotating disk that acts as an electrode. I can do it.
第１図はこの発明の実施例に係る合金の粉末製造装置を
示す模式図、第２図乃至第６図はそれぞれ異なる従来の
粉末製造装置を示す模式図である。
３１’、３２・・・電極、３３・・・アーク、３４．３
５・・・液滴、３６・・・ディスク、３７・・・回転装
置、３９・・・粉末、５０・・・チャンバー、５１・・
・ガス導入口、５２．５３・・・電源。
第１図
’；：； ２図
第 ３ 図
第４図
第５図
第６図FIG. 1 is a schematic diagram showing an alloy powder manufacturing apparatus according to an embodiment of the present invention, and FIGS. 2 to 6 are schematic diagrams showing different conventional powder manufacturing apparatuses. 31', 32... Electrode, 33... Arc, 34.3
5... Droplet, 36... Disk, 37... Rotating device, 39... Powder, 50... Chamber, 51...
・Gas inlet, 52.53...Power supply. Figure 1';:; Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (2)
、この液滴生成手段からの液滴が当たる位置に配置され
たディスクと、ディスクを回転させる回転手段とを有し
、ディスク上に落下させた液滴をディスクの回転により
飛散させて合金粉末を製造する粉末の製造装置において
、前記液滴生成手段は対向して配置した複数対の電極と
、対向する電極間に電圧を印加してアークを形成しアー
ク熱により電極を溶融して液滴を落下させるアーク形成
手段とを有し、前記複数対の電極対のうち一部の電極対
は製造する合金組成の一部の組成からなる同一素材で形
成され、また他の電極対は少なくとも上記合金組成のう
ち少くとも残りの組成を含む同一素材で形成され、各電
極対間で形成された液滴がディスク上で混合されて製造
する合金組成の液滴となるようにしたことを特徴とする
合金の粉末製造装置。(1) A droplet generating means for generating and dropping alloy droplets, a disk disposed at a position where the droplets from the droplet generating means hit, and a rotating means for rotating the disk; In a powder manufacturing apparatus that manufactures alloy powder by scattering droplets dropped onto the top by rotating a disk, the droplet generating means includes a plurality of pairs of electrodes arranged facing each other and a voltage applied between the facing electrodes. and an arc forming means for melting the electrode by applying an electric current to form an arc and causing droplets to fall by melting the electrode by the arc heat, and some of the electrode pairs of the plurality of electrode pairs have a part of the alloy composition to be manufactured. The other electrode pairs are formed of the same material containing at least the remaining composition of the above alloy composition, and the droplets formed between each electrode pair are mixed on the disk. 1. An apparatus for producing an alloy powder, characterized in that the alloy powder is produced by producing droplets of an alloy composition.
ことを特徴とする特許請求の範囲第１項に記載の合金の
粉末製造装置。(2) The alloy powder manufacturing apparatus according to claim 1, wherein the upper surface of the disk is formed into a concave shape with a concave center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53687A JPS63169309A (en) | 1987-01-07 | 1987-01-07 | Apparatus for producing alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53687A JPS63169309A (en) | 1987-01-07 | 1987-01-07 | Apparatus for producing alloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63169309A true JPS63169309A (en) | 1988-07-13 |
Family
ID=11476477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53687A Pending JPS63169309A (en) | 1987-01-07 | 1987-01-07 | Apparatus for producing alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63169309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101160306B1 (en) * | 2010-07-15 | 2012-06-28 | 황정호 | Cartridge Type Spark Discharge Aerosol Generator |
-
1987
- 1987-01-07 JP JP53687A patent/JPS63169309A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101160306B1 (en) * | 2010-07-15 | 2012-06-28 | 황정호 | Cartridge Type Spark Discharge Aerosol Generator |
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