JP2002339006A - Method for manufacturing titanium and titanium alloy powder - Google Patents
Method for manufacturing titanium and titanium alloy powderInfo
- Publication number
- JP2002339006A JP2002339006A JP2001144470A JP2001144470A JP2002339006A JP 2002339006 A JP2002339006 A JP 2002339006A JP 2001144470 A JP2001144470 A JP 2001144470A JP 2001144470 A JP2001144470 A JP 2001144470A JP 2002339006 A JP2002339006 A JP 2002339006A
- Authority
- JP
- Japan
- Prior art keywords
- titanium
- powder
- raw material
- alloy powder
- titanium 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 title claims abstract description 41
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 23
- 239000010936 titanium Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 32
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000460 chlorine Substances 0.000 claims abstract description 23
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 23
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- 238000009689 gas atomisation Methods 0.000 claims abstract description 18
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical class [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 14
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 12
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 230000006698 induction Effects 0.000 claims abstract description 8
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 7
- 239000011780 sodium chloride Chemical class 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910000883 Ti6Al4V Inorganic materials 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
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000009700 powder processing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉末冶金や射出成
形、溶射などの粉体加工に用いられる細粒以下のチタン
粉末及びチタン合金粉末の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing fine-grained titanium powder and titanium alloy powder used for powder processing such as powder metallurgy, injection molding and thermal spraying.
【０００２】[0002]
【従来の技術】粉体加工に用いられる金属粉末は、組織
が均質で微細であることが要求されるので、一般に金属
溶湯を噴霧し、急冷微細化するアトマイズ法が用いられ
る。この中で、球状で流動性のよい金属粉末が得られる
ガスアトマイズ法が多く用いられている。2. Description of the Related Art Since a metal powder used for powder processing is required to have a uniform and fine structure, an atomizing method of spraying a molten metal and rapidly cooling and atomizing is used. Among them, a gas atomizing method that can obtain a spherical metal powder having good fluidity is often used.
【０００３】上記ガスアトマイズ法は、原料金属を溶解
した溶湯を、高速噴射される気体流れ中に供給して粉化
する方法であり、原料金属を溶解する手段として、従来
から耐火物製溶解るつぼや水冷式の銅製溶解るつぼなど
が使用されている。また、本発明者らは、先に高周波誘
導溶解を利用した溶解方法（特開平６−１１６６０９号
公報）を提案している。この高周波誘導溶解した原料を
使用してガスアトマイズした粉体は、汚染が少ないの
で、他のるつぼ溶解などに比べ有利である。[0003] The gas atomization method is a method in which a molten metal in which a raw material metal is dissolved is supplied into a high-speed jet gas stream to be pulverized. As a means for melting the raw material metal, a refractory melting crucible made of a refractory material has been used. A water-cooled copper melting crucible is used. Further, the present inventors have previously proposed a melting method using high frequency induction melting (Japanese Patent Application Laid-Open No. 6-116609). Gas atomized powder using the high-frequency induction-melted raw material is less contaminated, and is therefore more advantageous than other crucible melting and the like.
【０００４】ガスアトマイズ法の諸条件と粉末粒径との
関係について多くの経験式などが報告されている。その
１例として、下記に示すルバンスカの式について見る
と、溶湯金属の溶湯密度、表面張力、粘性率などの基本
物性が影響していることがわかる。[0004] Many empirical formulas have been reported on the relationship between various conditions of the gas atomization method and the particle size of the powder. As an example, looking at the Lubanska equation shown below, it can be seen that the basic physical properties such as the molten metal density, surface tension, and viscosity are affected.
【０００５】[0005]
【数１】 (Equation 1)
【０００６】従って、ガスアトマイズ法によりチタン粉
末及びチタン合金粉末を製造する場合には、製造される
粉末粒径に影響を及ぼす溶湯の粘性、表面張力が大きい
ため、細粒化されにくい性質がある。更に、チタンは高
融点金属である等の条件が重なり、一般には、ガスアト
マイズ法でチタン及びチタン合金を粉末化しても粗粒し
か得られない。[0006] Therefore, when titanium powder and titanium alloy powder are produced by the gas atomization method, the viscosity and surface tension of the molten metal, which affect the particle diameter of the produced powder, are large, so that there is a tendency that the particles are hardly refined. Furthermore, conditions such as the fact that titanium is a high melting point metal overlap, and in general, only coarse particles can be obtained even if titanium and a titanium alloy are powdered by a gas atomizing method.
【０００７】しかるに、近年チタン及びチタン合金の優
れた特性を生かして各種の機械部品や時計バンドなどに
使用されるようになり、用途の拡大とともに緻密な焼結
体を作るため、チタン及びチタン合金の粉末としては、
細粒のものが要求されるようになり、具体的には８０μ
ｍ以下のものが望まれている。However, in recent years, titanium and titanium alloys have been used in various mechanical parts and watch bands by utilizing the excellent properties of titanium and titanium alloys. As powder of
Fine-grained ones are required, specifically 80μ
m or less is desired.
【０００８】[0008]
【発明が解決しようとする課題】従来のガスアトマイズ
法では、原料として溶製材が使用されている。これは密
度のばらつきがないために安定して溶解できるためであ
る。しかし、この場合、チタン及びチタン合金の粉末粒
径を粗粒化することはできなかった。また、スポンジチ
タンやスポンジチタンとチタンスクラップ片をプレスで
圧縮してコンパクトを作製し、これを複数個溶接により
接合して棒状原料として使用することもある。この場合
でもチタン及びチタン合金の粉末粒径を細粒化すること
はできなかった。In the conventional gas atomizing method, an ingot is used as a raw material. This is because there is no variation in the density, so that it can be stably dissolved. However, in this case, the powder particle size of titanium and titanium alloy could not be coarsened. In addition, titanium sponge or titanium sponge and titanium scrap pieces are compressed by a press to produce a compact, and a plurality of compacts are joined by welding to be used as a rod-shaped raw material. Even in this case, it was not possible to reduce the powder particle size of titanium and titanium alloy.
【０００９】本発明は、上記従来法に見られる問題点を
排除し、汚染の少ない細粒のチタン粉末及びチタン合金
粉末を、ガスアトマイズ法により製造する方法を提供す
ることにある。An object of the present invention is to provide a method for producing fine-grained titanium powder and titanium alloy powder with less contamination by a gas atomization method, eliminating the problems encountered in the conventional method.
【００１０】[0010]
【課題を解決するための手段】本発明者は、上記目的を
達成するため、ガスアトマイズ法により製造されるチタ
ン粉末及びチタン合金粉末の製造条件による細粒化への
影響について検討した。すなわち、ガスアトマイズ法に
よりチタン及びチタン合金粉末を製造する場合、前記ル
バンスカの式に示されるガス噴射能力（ガス圧力、ガス
流量、ガス流速）と溶湯径が同じであれば、粉末粒径は
溶融チタン及び溶融チタン合金の粘性、表面張力、密度
の基本物性によって決定される。Means for Solving the Problems In order to achieve the above object, the present inventor studied the effects of the production conditions of titanium powder and titanium alloy powder produced by the gas atomization method on grain refinement. That is, when producing titanium and a titanium alloy powder by the gas atomization method, if the gas injection capacity (gas pressure, gas flow rate, gas flow rate) shown by the above-mentioned Lubanska equation is the same as the molten metal diameter, the powder particle diameter becomes molten titanium. And the basic properties of viscosity, surface tension, and density of the molten titanium alloy.
【００１１】例えば、チタン及びチタン合金は、アルミ
ニウムに比べると密度は大きく細粒化方向であるが、粘
性や表面張力といった物性値は大きくなり粗粒化方向と
なる。そこで、これらの現象をとらえて種々検討の結
果、溶解原料中の塩素濃度を制御することにより細粒化
の効果があることを見いだした。この知見に基づいて、
次のとおり発明を完成した。For example, titanium and titanium alloys have a higher density and a finer grain direction than aluminum, but have large physical property values such as viscosity and surface tension, and thus have a coarser grain direction. Therefore, as a result of various studies taking these phenomena into consideration, it has been found that controlling the chlorine concentration in the dissolved raw material has an effect of grain refinement. Based on this finding,
The invention was completed as follows.
【００１２】本発明のチタン粉末及びチタン合金粉末の
製造方法は、コンパクトで構成された棒状原料を高周波
誘導溶解するガスアトマイズ法によりチタン粉末及びチ
タン合金粉末を製造する方法において、棒状原料の塩素
濃度を３００〜１５００ｐｐｍの範囲に調整して溶解す
ることにある。The method for producing titanium powder and titanium alloy powder according to the present invention is a method for producing titanium powder and titanium alloy powder by a gas atomization method in which a compact rod-shaped raw material is subjected to high frequency induction melting. It is to adjust and dissolve in the range of 300 to 1500 ppm.
【００１３】また、上記チタン及びチタン合金粉末の製
造方法において、塩化マグネシウムや塩化ナトリウムの
塩、またはそれらの塩を高濃度に含有するチタンを原料
中に添加・混合することにより、棒状原料の塩素濃度を
調整することにある。[0013] In the above method for producing titanium and titanium alloy powder, a magnesium chloride or sodium chloride salt or titanium containing a high concentration of such a salt is added to and mixed with the raw material so that the rod-shaped raw material chlorine is removed. The purpose is to adjust the density.
【００１４】[0014]
【発明の実施の形態】本発明は、棒状原料を高周波誘導
溶解するガスアトマイズ法によりチタン粉末及びチタン
合金粉末を製造する方法において、棒状原料の塩素濃度
を３００〜１５００ｐｐｍの範囲に調整して溶解するこ
とにある。このように、棒状原料中の塩素濃度を規制す
ることにより、粉末の細粒化が促進される。その理由は
つまびらかではないが、次のように推測される。すなわ
ち、塩化マグネシウムや塩化ナトリウムといった塩は、
溶解時に蒸気となって揮発するが、その蒸発する際に、
溶融チタン及び溶融チタン合金の粘性や表面張力を小さ
くする。または、塩化マグネシウム蒸気や塩化ナトリウ
ム蒸気が溶湯の雰囲気を包み、見かけ上の粘性や表面張
力が小さくなるような現象が発生するのではないかと推
定される。BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a method for producing titanium powder and titanium alloy powder by a gas atomization method in which a rod-shaped raw material is subjected to high frequency induction melting, wherein the rod-shaped raw material is dissolved by adjusting the chlorine concentration in the range of 300 to 1500 ppm. It is in. In this way, by regulating the chlorine concentration in the rod-shaped raw material, finer powder is promoted. The reason is not obvious, but is speculated as follows. That is, salts such as magnesium chloride and sodium chloride
When dissolved, it evaporates as a vapor, but when it evaporates,
Reduce the viscosity and surface tension of molten titanium and molten titanium alloy. Alternatively, it is presumed that magnesium chloride vapor or sodium chloride vapor envelops the atmosphere of the molten metal, causing a phenomenon in which apparent viscosity and surface tension are reduced.
【００１５】従って、粉末原料となる溶解前のチタン及
びチタン合金、あるいは目標のチタン合金組成に配合さ
れたチタンと合金元素との混合物に塩化マグネシウムや
塩化ナトリウムの塩、またはこれらの塩を高濃度に含有
するチタンを添加・混合することにより、細粒化したチ
タン粉末及びチタン合金粉末を得ることができる。Therefore, magnesium chloride, sodium chloride salt, or a salt thereof is added to the undissolved titanium or titanium alloy as a powder raw material or the mixture of titanium and alloy element blended in the target titanium alloy composition. By adding and mixing the titanium contained in the powder, fine-grained titanium powder and titanium alloy powder can be obtained.
【００１６】上記塩は、粉末原料の塩素濃度が３００〜
１５００ｐｐｍの範囲となるように添加する必要があ
る。その理由は、粉末原料の塩素濃度が３００ｐｐｍ未
満では、アトマイズされた粉末は細粒化されず、また１
５００ｐｐｍを超えると溶解時のスプラッシュの発生が
激しくなり、安定した溶解が困難となるからである。な
お、ガスアトマイズ法における溶解上のトラブルを避
け、効率良く経済的に細粒化粉末を製造するには、塩素
濃度を更に狭めて５００〜１２００ｐｐｍの範囲とする
ことが望ましい。The above salt has a powder material having a chlorine concentration of 300 to 300.
It is necessary to add so as to be in a range of 1500 ppm. The reason is that if the chlorine concentration of the powder raw material is less than 300 ppm, the atomized powder will not be refined,
If the content exceeds 500 ppm, the generation of splash during dissolution becomes severe and stable dissolution becomes difficult. In order to efficiently and economically produce a finely divided powder while avoiding a trouble in dissolution in the gas atomization method, it is desirable to further narrow the chlorine concentration to be in the range of 500 to 1200 ppm.
【００１７】粉末原料の塩素濃度を調整するには、原料
コンパクトを製作する際、塩化マグネシウムや塩化ナト
リウムの塩を添加するか、あるいはこれらの塩を高濃度
に含有するスポンジチタンを使用する。In order to adjust the chlorine concentration of the powder raw material, when manufacturing a raw material compact, a salt of magnesium chloride or sodium chloride is added, or sponge titanium containing a high concentration of these salts is used.
【００１８】[0018]
【実施例】実施例１ 塩素濃度の異なるスポンジチタン及びチタンスクラップ
原料を、目標とする塩素濃度に配合した後にプレスで圧
縮してコンパクト（直径４０ｍｍ、長さ４０ｍｍ）を各
種塩素濃度ごとに複数個ずつ作製し、次に、このコンパ
クトを溶接により接合することにより各種塩素濃度ごと
の棒状原料を作製した。この棒状原料を高周波非接触誘
導溶解ガスアトマイズ法によって粉末化し、純チタン粉
末を製造した。この際の高周波誘導溶解は周波数１００
ｋＨｚ，溶解電力５０ｋｗの条件で溶解し、噴霧媒体と
して４０ｋｇ／ｃｍ2、１５Ｎｍ2／ｍｉｎのアルゴンガ
スを使用した。得られた純チタン粉末の平均粒径、溶解
状況を表１に示す。Example 1 Titanium sponge and titanium scrap raw materials having different chlorine concentrations were blended to a target chlorine concentration and then compressed by a press to produce a plurality of compacts (diameter 40 mm, length 40 mm) for each chlorine concentration. Then, the compacts were joined by welding to produce rod-shaped raw materials for various chlorine concentrations. This rod-shaped raw material was powdered by a high-frequency non-contact induction melting gas atomizing method to produce pure titanium powder. The high-frequency induction melting at this time is performed at a frequency of 100.
Melting was performed under the conditions of kHz and a melting power of 50 kW, and argon gas of 40 kg / cm 2 and 15 Nm 2 / min was used as a spray medium. Table 1 shows the average particle size and the dissolution state of the obtained pure titanium powder.
【００１９】[0019]
【表１】 [Table 1]
【００２０】上記表１の結果より、本発明の実施により
塩素濃度を３００〜１５００ｐｐｍの範囲に規制した実
施例１〜６は、いずれも粉末粒径が８０μｍ以下の細粒
が得られており、また安定操業性もよいことがわかる。
これに対し、塩素濃度が３００〜１５００ｐｐｍの範囲
を外れた比較例１〜３は、いずれも粉末粒径が８０μｍ
を超えており、細粒化していないことがわかる。比較例
３では安定操業ができなかった。具体的には、棒状原料
の下端部の溶解部分から発生するスプラッシュが激しか
ったためか、棒状原料の下端から流下する溶湯流が乱れ
ていた。そのため、噴霧ガスの集中部分に安定して溶湯
流を供給することができなかったために、細粒化が阻害
されたものと考えられる。From the results shown in Table 1 above, in Examples 1 to 6 in which the chlorine concentration was controlled in the range of 300 to 1500 ppm by implementing the present invention, fine particles having a powder particle size of 80 μm or less were obtained. Also, it can be seen that the stable operability is good.
On the other hand, in Comparative Examples 1 to 3 in which the chlorine concentration was out of the range of 300 to 1500 ppm, the powder particle size was 80 μm.
, And it can be seen that the particles were not refined. In Comparative Example 3, stable operation could not be performed. Specifically, the flow of the molten metal flowing down from the lower end of the rod-shaped raw material was disturbed, probably because of the violent splash generated from the melting portion at the lower end of the rod-shaped raw material. Therefore, it is considered that the melt flow could not be stably supplied to the concentrated portion of the spray gas, and thus the grain refinement was inhibited.
【００２１】実施例２ 塩素濃度の異なるスポンジチタン及びチタンスクラップ
原料をアルミ・バナジウム母合金と共に、目標とする合
金組成と塩素濃度に配合して実施例１と同様に各種塩素
濃度の直径４０ｍｍの棒状原料を作り、高周波誘導溶解
ガスアトマイズ法によりＴｉ−６Ａｌ−４Ｖ合金粉末を
製造した。この際、噴霧媒体として４０ｋｇ／ｃｍ2、
１５Ｎｍ2／ｍｉｎのアルゴンガスを使用した。得られ
たＴｉ−６Ａｌ−４Ｖ合金粉末の平均粒径、溶解状況を
表２に示す。EXAMPLE 2 A mixture of titanium sponge and titanium scrap materials having different chlorine concentrations together with an aluminum / vanadium master alloy to a target alloy composition and chlorine concentration was prepared. A raw material was prepared, and a Ti-6Al-4V alloy powder was manufactured by a high-frequency induction melting gas atomizing method. At this time, 40 kg / cm 2 as a spray medium,
15 Nm 2 / min of argon gas was used. Table 2 shows the average particle size and the dissolution state of the obtained Ti-6Al-4V alloy powder.
【００２２】[0022]
【表２】 [Table 2]
【００２３】上記表２の結果より、本発明の実施により
塩素濃度を３００〜１５００ｐｐｍの範囲に規制した実
施例７〜９は、いずれも粉末粒径が８０μｍ以下の細粒
が得られており、また安定操業性もよいことがわかる。
これに対し、塩素濃度が３００〜１５００ｐｐｍの範囲
を外れた比較例４〜６は、いずれも粉末粒径が８０μｍ
を超えており、細粒化していないことがわかる。From the results in Table 2 above, in Examples 7 to 9 in which the chlorine concentration was controlled to be in the range of 300 to 1500 ppm by implementing the present invention, fine particles having a powder particle size of 80 μm or less were obtained. Also, it can be seen that the stable operability is good.
On the other hand, in Comparative Examples 4 to 6 in which the chlorine concentration was out of the range of 300 to 1500 ppm, the powder particle size was 80 μm.
, And it can be seen that the particles were not refined.
【００２４】[0024]
【発明の効果】本発明の実施によれば、ガスアトマイズ
法において、塩素濃度を３００〜１５００ｐｐｍの範囲
に規制した原料を使ってアトマイズすることにより、効
率良くチタン及びチタン合金の細粒粉末を製造すること
ができる。According to the present invention, fine particles of titanium and titanium alloy can be produced efficiently by atomizing using a raw material whose chlorine concentration is regulated in the range of 300 to 1500 ppm in the gas atomization method. be able to.
Claims (2)
波誘導溶解するガスアトマイズ法によりチタン粉末及び
チタン合金粉末を製造する方法において、棒状原料の塩
素濃度を３００〜１５００ｐｐｍの範囲に調整して溶解
するチタン粉末及びチタン合金粉末の製造方法。1. A method for producing a titanium powder and a titanium alloy powder by a gas atomization method in which a compact rod-shaped raw material is subjected to high frequency induction melting by dissolving the rod-shaped raw material by adjusting the chlorine concentration of the raw material to a range of 300 to 1500 ppm. Method for producing powder and titanium alloy powder.
塩、またはそれらの塩を高濃度に含有するチタンを原料
中に添加・混合することにより、棒状原料の塩素濃度を
調整する請求項１記載のチタン粉末及びチタン合金粉末
の製造方法。2. The titanium powder according to claim 1, wherein the chlorine concentration of the rod-shaped raw material is adjusted by adding / mixing a salt of magnesium chloride or sodium chloride, or titanium containing a high concentration thereof to the raw material. And a method for producing titanium alloy powder.
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| JP2001144470A JP2002339006A (en) | 2001-05-15 | 2001-05-15 | Method for manufacturing titanium and titanium alloy powder |
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|---|---|---|---|
| JP2001144470A JP2002339006A (en) | 2001-05-15 | 2001-05-15 | Method for manufacturing titanium and titanium alloy powder |
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ID=18990416
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| WO2007135806A1 (en) * | 2006-05-18 | 2007-11-29 | Osaka Titanium Technologies Co., Ltd. | Process for producing spherical titanium alloy powder |
| US7833472B2 (en) * | 2005-06-01 | 2010-11-16 | General Electric Company | Article prepared by depositing an alloying element on powder particles, and making the article from the particles |
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| US7833472B2 (en) * | 2005-06-01 | 2010-11-16 | General Electric Company | Article prepared by depositing an alloying element on powder particles, and making the article from the particles |
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| CN107151752B (en) * | 2017-06-13 | 2018-10-23 | 东北大学 | The method for preparing titanium alloy with wash heat refining based on the reduction of aluminothermy self- propagating gradient |
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