JPH03162504A - Manufacture of metal powder sintered compact - Google Patents
Manufacture of metal powder sintered compactInfo
- Publication number
- JPH03162504A JPH03162504A JP30435789A JP30435789A JPH03162504A JP H03162504 A JPH03162504 A JP H03162504A JP 30435789 A JP30435789 A JP 30435789A JP 30435789 A JP30435789 A JP 30435789A JP H03162504 A JPH03162504 A JP H03162504A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- powder
- metal powder
- alloy
- rubber
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 16
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 239000011812 mixed powder Substances 0.000 claims description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- WTKKCYNZRWIVKL-UHFFFAOYSA-N tantalum Chemical compound [Ta+5] WTKKCYNZRWIVKL-UHFFFAOYSA-N 0.000 claims description 2
- HHIQWSQEUZDONT-UHFFFAOYSA-N tungsten Chemical group [W].[W].[W] HHIQWSQEUZDONT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 14
- 229910052702 rhenium Inorganic materials 0.000 abstract description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 8
- 230000035515 penetration Effects 0.000 abstract description 7
- 238000005245 sintering Methods 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 229920006311 Urethane elastomer Polymers 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- -1 etc. Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- MGTZNGICWXYDPR-ZJWHSJSFSA-N 3-[[(2r)-2-[[(2s)-2-(azepane-1-carbonylamino)-4-methylpentanoyl]amino]-3-(1h-indol-3-yl)propanoyl]amino]butanoic acid Chemical compound N([C@@H](CC(C)C)C(=O)N[C@H](CC=1C2=CC=CC=C2NC=1)C(=O)NC(C)CC(O)=O)C(=O)N1CCCCCC1 MGTZNGICWXYDPR-ZJWHSJSFSA-N 0.000 description 1
- 229910017770 Cu—Ag Inorganic materials 0.000 description 1
- 229910017816 Cu—Co Inorganic materials 0.000 description 1
- 241001629511 Litchi Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば防護物を侵徹する成形弾用ライナに有
用な金属粉末成形体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 manufacturing a metal powder compact useful as, for example, a liner for a shaped bullet that penetrates a protective object.
（従来の技術）
戒形弾用ライナには純銅（無酸素銅）が、一般的に使用
されているが、このライナの製造方法としては、鍛造法
、機械加工法、電析法などがある。(Prior technology) Pure copper (oxygen-free copper) is generally used for liners for military bullets, and methods for manufacturing this liner include forging, machining, and electrodeposition. .
ところで、この或形弾用ライナに要求される特性は、■
密度が高いこと、■ジェットの伸びが大きいことであり
、この要求を比較的満足する材料としては前記した純銅
の他、金、タンタルなどが知られている。By the way, the characteristics required for this liner for a certain type of bullet are: ■
(1) high density, and (1) large elongation of the jet. In addition to the pure copper mentioned above, gold, tantalum, and the like are known as materials that relatively satisfy these requirements.
（発明が解決しようとする課題）
しかしながら金やタンタルは純銅より特性は優れている
が高価であるため実用化されておらず、純銅より特性の
優れた合金及びライチの製造方法の開発が望まれていた
。(Problem to be solved by the invention) However, although gold and tantalum have better properties than pure copper, they are expensive and have not been put into practical use.Therefore, it is desired to develop an alloy with better properties than pure copper and a method for producing litchi. was.
本発明は上記実情に鑑みて威されたものであり、銅より
も密度、伸びの大きい合金、換言すれば、防護物の侵敬
長の大きい合金を用いて成形体を製造する方法を提供す
ることを目的としている。The present invention was developed in view of the above circumstances, and provides a method for manufacturing a molded body using an alloy that has a higher density and elongation than copper, in other words, an alloy that has a large penetration length of a protective object. The purpose is to
（課題を解決するための手段）
タングステン（Ｗ）、タンタル（Ｔａ） 、レニウム（
Ｒｅ）と！Ｍ（Ｃｕ）は液相あるいは固相状態で相互に
固溶しないため、鋳造法、鍛造法では製造が困難である
．しかしながら粉末冶金法で、Ｗ，Ｔａ、Ｒｅ粉末の骨
格を形成させた後に焼結してＣｕを溶浸することにより
製造が可能である．この粉末冶金法で製造した合金（た
とえばＷ−Ｃｕ）は古くから電気接点材料として使用さ
れているが、例えば環状円錐形をした戒形弾用ライナへ
の適用はなされておらず、その製造方法も知られていな
い。(Means for solving the problem) Tungsten (W), tantalum (Ta), rhenium (
Re) and! Since M (Cu) does not dissolve into each other in the liquid or solid state, it is difficult to manufacture by casting or forging methods. However, it can be manufactured using a powder metallurgy method by forming a skeleton of W, Ta, and Re powder, sintering it, and infiltrating it with Cu. Alloys manufactured by this powder metallurgy method (for example, W-Cu) have been used as electrical contact materials for a long time, but they have not been applied to, for example, liners for military bullets in the shape of an annular cone, and their manufacturing method is also unknown.
そこで本発明者は、侵徹長にすぐれかつ高価な金属であ
るＷ， Ｔａ， Ｒｅの材料歩留りの高いＷ −Ｃｕ、
Ｔａ − ＣｕおよびＲｅ−Ｃｕ合金素材を用いた成形
体を開発するため、合金粉末成形体の製造方法につき、
種々検討を加えた結果、以下のような本発明を成立させ
たのである。Therefore, the present inventor developed W-Cu, which has a high material yield of W, Ta, and Re, which are expensive metals with excellent penetration length.
In order to develop compacts using Ta-Cu and Re-Cu alloy materials, we developed a method for producing alloy powder compacts.
As a result of various studies, the following invention was established.
すなわち第１の本発明は、金属粉末をゴム型と、金型の
中子とで形成される空間に充填して冷間静水圧成形した
後、該威形体に銅あるいは銅合金を溶浸させることを要
旨とする金属粉末或形体の製造方法である。That is, the first aspect of the present invention is to fill a space formed by a rubber mold and a core of the mold with metal powder, perform cold isostatic pressing, and then infiltrate the large body with copper or copper alloy. This is a method for manufacturing a metal powder or shaped body.
また第２の本発明は、金属粉末がタングステン、タンタ
ルあるいはレニウムの粉末、あるいはこれらと銅又は銅
合金粉末との混合粉末であることを要旨とする前記第１
の本発明に係る金属粉末成形体の製造方法である。Further, the second invention is characterized in that the metal powder is tungsten, tantalum or rhenium powder, or a mixed powder of these and copper or copper alloy powder.
1 is a method for manufacturing a metal powder compact according to the present invention.
また第３の本発明は、成形体が或形弾用合金素材である
ことを要旨とする前記第ｌ又は第２の本発明に係る金属
粉末成形体の製造方法である。A third aspect of the present invention is a method for manufacturing a metal powder compact according to the first or second aspect of the present invention, wherein the compact is an alloy material for a certain shaped bullet.
本発明方法では例えば第３図に示す形状のライナ素材の
成形体１を製造するため、第１図に示す如き冷間静水圧
プレス（以下ｒＣ Ｉ ＰＪと略す）用型を使用するの
である。In the method of the present invention, a mold for cold isostatic press (hereinafter abbreviated as rC I PJ) as shown in FIG. 1 is used to manufacture a molded body 1 of a liner material having the shape shown in FIG. 3, for example.
第１図及び第２図において２はゴム型であり、材質は硬
さＨｓ７０程度が適しておりたとえばウレタンゴムを用
いる．硬さがこれより低いと金属粉がゴムにささるため
、ＣＩＰの除荷時、金属粉とゴムとの摩擦が大きくなる
ため成形体にクランクが発生しやすくなるからである。In FIGS. 1 and 2, 2 is a rubber type, and the suitable material is a hardness of about Hs70, for example, urethane rubber. If the hardness is lower than this, the metal powder will stick to the rubber, and when the CIP is unloaded, the friction between the metal powder and the rubber will increase, making it easier for the molded product to crack.
また、硬さがこれより高くなるとゴムのモジュラスが大
きくなり、同様に成形体にクランクが発生しやすくなる
からである。ゴムの肉厚は５口から２５ｍｍの範囲が望
ましい。肉厚が５１ＩＩｆｌｌより小さいと金型の中子
３とゴム型２のセッティングが不安定となってＣＩＰ時
或形体の芯ズレを生じるからである。また肉厚が２５１
ＩＩＩを超えるとＣＩＰ時の収縮率が変化してくる上、
モジュラスが大きくなり、除荷時、成形体にクラフクが
発生しやすくなるからである。第２図に示すようにゴム
型２の肉厚に変化をつけることにより、第１図に比べて
芯ズレ防止、クラック防止を一層図ることが可能である
。Further, if the hardness is higher than this, the modulus of the rubber will increase, and the molded product will similarly be prone to cranking. The thickness of the rubber is preferably in the range of 5 mm to 25 mm. This is because if the wall thickness is smaller than 51IIfl, the setting of the mold core 3 and the rubber mold 2 will become unstable, resulting in misalignment of a certain shaped object during CIP. Also, the wall thickness is 251
If it exceeds III, the shrinkage rate during CIP will change,
This is because the modulus becomes large and cracks are likely to occur in the molded product during unloading. By varying the thickness of the rubber mold 2 as shown in FIG. 2, it is possible to further prevent misalignment and cracks compared to FIG. 1.
前記金型の中子３は強度、耐摩耗性の点よりＨｓ３５以
上の鋼例えばＳ４５Ｃ，ＳＣＭ４４０の調質材を用いる
ことが好ましい。For the core 3 of the mold, it is preferable to use a tempered material of Hs35 or higher steel, such as S45C or SCM440, from the viewpoint of strength and wear resistance.
中子３に金型を用いることによりゴム型を用いるよりも
ＣＩＰｔｃ形体の寸法精度を大幅に向上させることが可
能だからである。This is because by using a mold for the core 3, it is possible to significantly improve the dimensional accuracy of the CIPtc shape compared to using a rubber mold.
第１図及び第２図の４はゴム栓であり粉末充填後、密封
するために用いる。4 in FIGS. 1 and 2 is a rubber stopper, which is used for sealing after powder filling.
次に前記したようなＣＩＰ用型を用いた本発明製造方法
について詳細に述べる。Next, the manufacturing method of the present invention using the CIP mold as described above will be described in detail.
Ｗ， Ｔａ， Ｒｅ粉あるいはＷ−Ｃｕ．．Ｔａ −Ｃ
ｕ， Ｒｅ Ｃｕの混合粉にバインダーを添加した後
、第１図あるいは第２図に示すＣＩＰ用型に充填し、Ｃ
ＩＰ威形する。Ｗ， Ｔａ， Ｒｅ粉末の粒度は２−３
０μｍの範囲が好ましい。ここで、粒度とはフィッシャ
ー・サブ・シーブ・サイザーで測定した値をいう。Ｃｕ
粉の粒度はフルイ法でｅ２００メッシュが好ましい。W, Ta, Re powder or W-Cu. ．． Ta-C
After adding a binder to the mixed powder of u, Re Cu, it was filled into the CIP mold shown in Figure 1 or Figure 2, and
IP prestige. The particle size of W, Ta, Re powder is 2-3
A range of 0 μm is preferred. Here, the particle size refers to a value measured using a Fisher sub-sieve sizer. Cu
The particle size of the powder is preferably e200 mesh by the sieve method.
Ｗ．．Ｔａ， Ｒｅ粉とＣｕ又はＣｕ合金粉の混合はボ
ールミル、Ｖ型あるいはＷコーンミキサー、アトライタ
ー等で行う。なお、焼結、溶浸促進のため、必要により
Ｎｉ粉を添加する。W. ．． Ta, Re powder and Cu or Cu alloy powder are mixed using a ball mill, V-type or W-cone mixer, attritor, or the like. Note that Ni powder is added if necessary to promote sintering and infiltration.
ところでバインダーは粉末冶金に一般に用いられている
ワックス、セルロース、ステアリン酸亜鉛等が適用でき
る。By the way, wax, cellulose, zinc stearate, etc., which are generally used in powder metallurgy, can be used as the binder.
ＣＩＰの或形圧力は粉末粒度、Ｃｕ合金粉の混合比率に
より変化するが圧力は５００〜３０００ｋｇｆ／ｃｆｆ
ｌの範囲が適当である。この範囲の圧力ならば溶浸後、
ライナ素材の組威が、Ｗ，ＴａあるいはＲｅが６０ −
９０重量％となるからである。The pressure of a certain type of CIP varies depending on the powder particle size and the mixing ratio of Cu alloy powder, but the pressure is 500 to 3000 kgf/cff.
A range of l is appropriate. If the pressure is in this range, after infiltration,
The liner material has a W, Ta or Re of 60 −
This is because it is 90% by weight.
前記した方法で成形した成形体、あるいは或形体を脱ろ
うし、焼結した焼結体の上部あるいはキャビティにＣｕ
あるいはＣｕ合金の円板あるいは粉末を載せ、Ｃｕ溶浸
を行う。溶漫に使用するＣｕあるいはＣｕ合金は鋳鍛造
品から加工した円板の他、Ｃｕ、Ｃｕ−Ａｇ．．Ｃｕ
− Ｐ， Ｃｕ−Ｃｏなどの粉末を用いる。溶浸処理は
、水素あるいは水素一窒素混合雰囲気中で１１００〜１
２５０℃で１０〜１２０分間行う。また、溶浸前にエン
ドリングを容易とするため、必要に応じて焼結するが、
１１００〜１２５０″Ｃで１０〜１２０分間、真空ある
いは水素、水素一窒素混合雰囲気中で行う。A molded body formed by the method described above or a certain shaped body is dewaxed, and Cu is applied to the upper part or cavity of the sintered body.
Alternatively, a Cu alloy disk or powder is placed and Cu infiltration is performed. Cu or Cu alloys used for melting are not only disks machined from cast and forged products, but also Cu, Cu-Ag. ．． Cu
- Use powders such as P, Cu-Co, etc. Infiltration treatment is carried out in a hydrogen or hydrogen-nitrogen mixed atmosphere at 1100-1
It is carried out for 10-120 minutes at 250°C. In addition, in order to facilitate the end ring before infiltration, sintering is performed as necessary.
The treatment is carried out at 1100 to 1250''C for 10 to 120 minutes in vacuum or in a hydrogen or hydrogen-nitrogen mixed atmosphere.
かかる方法によって或形弾用ライナに適した金属粉末成
形体が製造できる。By this method, a metal powder compact suitable for a liner for a certain type of bullet can be manufactured.
（実 施 例）
Ｗ， ＴａＳＲｅ粉末あるいはボールミルで４時間混合
したＷ −Ｃｕ， Ｔａ−Ｃｕ， Ｒｅ粉末にロストワ
ックスを加熱混合して添加した。(Example) Lost wax was heated and mixed and added to W, TaSRe powder or W-Cu, Ta-Cu, Re powder that had been mixed in a ball mill for 4 hours.
直径φ５０鴫の内径を有する第１図のＣＩＰ用型に粉末
を充填シタ後、５００〜３０００ｋｇｆ／ｃ１ａ（７）
圧力テＣＩＰ戒形し、その後、型より成形体を取り出し
た。After filling the powder into the CIP mold shown in Fig. 1, which has an inner diameter of 50 mm in diameter, 500 to 3000 kgf/c1a (7)
After applying pressure and CIP, the molded product was taken out from the mold.
比較として、■直径φ５０ｍｏ＋の内径を有する中子も
ゴム型からなる第１図のＣＩＰ用型にロストワックスを
添加したＷ粉末を充填した後、１０００ｋｇｆ／ｃｆｆ
ｌの圧力でＣＩＰ成形した成形体と、■直径φ５０印の
内径を有する金型にロストワックスを添加したＷ粉末を
充填した後、ダブルアクションの粉末成形プレスで、１
０００ｋｇｆ／ｃｍの圧力で加圧成形し、円柱形状の成
形体を得た。As a comparison, after filling the CIP mold shown in Fig. 1, which also has a rubber core with an inner diameter of φ50mo+, and filling it with W powder to which lost wax has been added, 1000 kgf/cff was obtained.
After filling the molded body CIP-molded at a pressure of 1 lb with W powder to which lost wax has been added into a mold having an inner diameter of φ50 mark, 1
Pressure molding was performed at a pressure of 1,000 kgf/cm to obtain a cylindrical molded body.
これら成形体を脱ろう後、真空焼結炉で１ｌ５０゜Ｃで
２時間焼結し、焼結体の上にＣｕの円板を載せて１１３
０”Ｃで１時間溶浸処理した。さらにこの素材より所定
の形状に機械加工した後、炸薬Ｃｏｍｐ Ｂを用いて侵
徹試験を実施した。試験には比較として前記の、■の方
法で製造した成形体と無酸素銅の丸棒から削り出したラ
イナを用いた。After dewaxing these molded bodies, they were sintered in a vacuum sintering furnace at 1 liter and 50°C for 2 hours, and a Cu disk was placed on top of the sintered bodies.
The material was infiltrated for 1 hour at 0"C. After this material was machined into a predetermined shape, a penetration test was conducted using the explosive Comp B. For comparison, A molded body and a liner cut from a round bar of oxygen-free copper were used.
試験結果を下記第１表に示すが、本発明製造方法は従来
のＣｕ （比較例３）と比較して、１．３倍以上の侵徹
長を有するとともに、比較例１に比較して材料歩留まり
の高い製造方法であることが明らかである。なお、比較
例２は、質量が大きいため溶漫欠陥が発生し、
侵敞長は低下している。The test results are shown in Table 1 below, and the manufacturing method of the present invention has a penetration length that is 1.3 times or more compared to conventional Cu (Comparative Example 3), and has a lower material yield than Comparative Example 1. It is clear that this is a highly efficient manufacturing method. In addition, in Comparative Example 2, a dissolution defect occurred due to the large mass, and the erosion length decreased.
第ｌ表
（発明の効果）
以上説明したように、本発明方法によれば従来使用され
ていたＣｕより著しく侵徹長にすぐれ、かつ、材料歩留
まりの高い成形弾用合金素材を製造することができる。Table 1 (Effects of the Invention) As explained above, according to the method of the present invention, it is possible to produce an alloy material for shaped bullets that has significantly better penetration length than conventionally used Cu and has a high material yield. .
第１図及び第２図は本発明方法に使用するＣＩＰ用型の
説明図、第３図は本発明方法で製造した成形体の一例を
示す図面である。
１は成形体、２はゴム型、３は中子、４はゴム栓。1 and 2 are explanatory diagrams of a CIP mold used in the method of the present invention, and FIG. 3 is a drawing showing an example of a molded article produced by the method of the present invention. 1 is a molded body, 2 is a rubber mold, 3 is a core, and 4 is a rubber stopper.
Claims (3)
空間に充填して冷間静水圧成形した後、該成形体に銅あ
るいは銅合金を溶浸させることを特徴とする金属粉末成
形体の製造方法。(1) The space formed by the rubber mold and the mold core is filled with metal powder, cold isostatic pressing is performed, and then copper or copper alloy is infiltrated into the molded product. A method for producing a metal powder compact.
ウムの粉末、あるいはこれらと銅又は銅合金粉末との混
合粉末であることを特徴とする請求項１記載の金属粉末
成形体の製造方法。(2) The method for producing a metal powder compact according to claim 1, wherein the metal powder is tungsten, tantalum, or rhenium powder, or a mixed powder of these and copper or copper alloy powder.
る請求項１又は２記載の金属粉末成形体の製造方法。(3) The method for producing a metal powder compact according to claim 1 or 2, wherein the compact is an alloy material for a shaped bullet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30435789A JP2932538B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of alloy material for molding bullets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30435789A JP2932538B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of alloy material for molding bullets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03162504A true JPH03162504A (en) | 1991-07-12 |
| JP2932538B2 JP2932538B2 (en) | 1999-08-09 |
Family
ID=17932046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30435789A Expired - Lifetime JP2932538B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of alloy material for molding bullets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2932538B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05287314A (en) * | 1992-04-07 | 1993-11-02 | Nippon Steel Corp | Isostatic molding die and powder molding method |
| KR100490879B1 (en) * | 2002-11-29 | 2005-05-24 | 국방과학연구소 | W-Cu ALLOY WITH HOMOGENEOUS MICRO-STRUCTURE AND THE MANUFACTURING METHOD THEREOF |
| JP2006266531A (en) * | 2005-03-22 | 2006-10-05 | Asahi Kasei Chemicals Corp | Clay composition for shooting |
| JP2011075251A (en) * | 2009-10-01 | 2011-04-14 | Daikin Industries Ltd | Warhead part |
| JP2013231589A (en) * | 2013-07-04 | 2013-11-14 | Daikin Industries Ltd | Warhead part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101632040B1 (en) * | 2014-08-26 | 2016-06-21 | 엔에이티엠 주식회사 | Method for calculating contraction percentage of tungsten crucible and method for producing tungsten crucible using the same |
-
1989
- 1989-11-21 JP JP30435789A patent/JP2932538B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05287314A (en) * | 1992-04-07 | 1993-11-02 | Nippon Steel Corp | Isostatic molding die and powder molding method |
| KR100490879B1 (en) * | 2002-11-29 | 2005-05-24 | 국방과학연구소 | W-Cu ALLOY WITH HOMOGENEOUS MICRO-STRUCTURE AND THE MANUFACTURING METHOD THEREOF |
| US7172725B2 (en) * | 2002-11-29 | 2007-02-06 | Agency For Defense Development | W-Cu alloy having homogeneous micro-structure and the manufacturing method thereof |
| JP2006266531A (en) * | 2005-03-22 | 2006-10-05 | Asahi Kasei Chemicals Corp | Clay composition for shooting |
| JP2011075251A (en) * | 2009-10-01 | 2011-04-14 | Daikin Industries Ltd | Warhead part |
| JP2013231589A (en) * | 2013-07-04 | 2013-11-14 | Daikin Industries Ltd | Warhead part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2932538B2 (en) | 1999-08-09 |
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