JP2009138263A - Method for producing die by metal glass powder sintering, the die, and member produced thereby - Google Patents
Method for producing die by metal glass powder sintering, the die, and member produced thereby Download PDFInfo
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- JP2009138263A JP2009138263A JP2008267057A JP2008267057A JP2009138263A JP 2009138263 A JP2009138263 A JP 2009138263A JP 2008267057 A JP2008267057 A JP 2008267057A JP 2008267057 A JP2008267057 A JP 2008267057A JP 2009138263 A JP2009138263 A JP 2009138263A
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- 239000002184 metal Substances 0.000 title claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 59
- 239000000843 powder Substances 0.000 title claims abstract description 58
- 239000011521 glass Substances 0.000 title claims abstract description 46
- 238000005245 sintering Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 230000009477 glass transition Effects 0.000 claims abstract description 12
- 238000002425 crystallisation Methods 0.000 claims description 10
- 230000008025 crystallization Effects 0.000 claims description 10
- 238000001953 recrystallisation Methods 0.000 abstract 1
- 239000005300 metallic glass Substances 0.000 description 18
- 229910045601 alloy Inorganic materials 0.000 description 16
- 239000000956 alloy Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000009689 gas atomisation Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910017061 Fe Co Inorganic materials 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001347 Stellite Inorganic materials 0.000 description 2
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004455 differential thermal analysis Methods 0.000 description 2
- 125000001475 halogen functional group Chemical group 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000009700 powder processing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000013526 supercooled liquid Substances 0.000 description 2
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/05—Press-mould die materials
- C03B2215/06—Metals or alloys
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/40—Product characteristics
- C03B2215/41—Profiled surfaces
Abstract
Description
本発明は、金属ガラス粉末を用いた金型の製造方法と金型およびその金型によって成形加工された部材に関するものである。より具体的には、金属ガラス粉末のみを用いて、機械加工を行うことなく、金属ガラス粉末をホットプレスにて焼結と同時にプレス成形することで製造することができる金型とその金型によって成形加工される精密部材に関するものである。 The present invention relates to a mold manufacturing method using metal glass powder, a mold, and a member molded by the mold. More specifically, by using a metal mold and a mold that can be manufactured by using metal glass powder only and press-molding the metal glass powder simultaneously with sintering in a hot press without machining. The present invention relates to a precision member to be molded.
一般に金属ガラスは従来のアモルファス合金に比べ、硬度、強度、耐熱性、耐食性に優れ、また、ガラス遷移温度（Ｔｇ）と結晶化温度（Ｔｘ）の間の過冷却液体領域では粘性流動体となり、非常に容易に加工ができる。 In general, metallic glass is superior in hardness, strength, heat resistance and corrosion resistance compared to conventional amorphous alloys, and becomes a viscous fluid in the supercooled liquid region between the glass transition temperature (Tg) and the crystallization temperature (Tx). It can be processed very easily.
近年、この金属ガラスの応用事例として、その加工性、耐久性を活かして金型に使用することが期待されている。しかしながら、金属ガラスの製造には成分によって異なるが１０〜１０００℃／ｓｅｃの冷却速度が必要となるため、作製可能なバルク体の大きさ及び厚さに限界があった。そこで、アトマイズ等によって作製した金属ガラス粉末を固化成形し金型として利用することが考えられている。この粉末冶金の方法を用いることで、大型の金型への適用も考えられる。例えば、特開２００５−２７２２５４号公報（特許文献１）では水アトマイズで作製したＦｅ基金属ガラス粉末を放電プラズマ焼結法で焼結成型しガラス成型用金型とすることが提案されている。 In recent years, as an application example of this metallic glass, it is expected that it will be used in a metal mold taking advantage of its workability and durability. However, the production of metallic glass requires a cooling rate of 10 to 1000 ° C./sec depending on the components, but there is a limit to the size and thickness of the bulk material that can be produced. Therefore, it has been considered that the metallic glass powder produced by atomization or the like is solidified and used as a mold. By using this powder metallurgy method, application to a large mold is also conceivable. For example, Japanese Patent Laid-Open No. 2005-272254 (Patent Document 1) proposes that a Fe-based metal glass powder produced by water atomization is sintered by a discharge plasma sintering method to form a glass molding die.
また、特開２００４−９０４３４号公報（特許文献２）では板状の金属ガラス表面をプレス成形し金型の成型面を作製し、金属ガラス粉末と焼結し積層することで厚みのあるプラスチックやガラス成形用金型の製造方法が提案されている。これらは、いずれも金属ガラスの高い加工性や型転写性を活かして金型面を作製すること、またその強度、耐食性を活かして耐久性のある金型とすることを特徴としている。 In JP 2004-90434 A (Patent Document 2), a plate-shaped metallic glass surface is press-molded to form a molding surface of a mold, and sintered with a metallic glass powder and laminated to form a thick plastic or A method for manufacturing a glass molding die has been proposed. These are all characterized in that a metal mold surface is produced by taking advantage of the high workability and mold transferability of metallic glass, and that a durable mold is produced by taking advantage of its strength and corrosion resistance.
しかしながら、特許文献１にあるパルス放電焼結法は従来のホットプレス法の欠点を解決する手段として提案されているが、電流による粉末界面の過熱温度上昇によって界面部分が結晶化する恐れがあることや、装置が複雑かつ高価となるため現実的な解決手段とはいえないのが現状である。また、特許文献２では粉末などと積層するため、工程が複雑であり、コストがかかる。
上述したように、金属ガラスの特徴を活かした粉末焼結による微細な凹凸をもつ金型を得るためには、加工中の結晶化を防いで非晶質構造を保ちつつ高密度化、特に金型となる加工表面の高密度化をする必要がある。本発明は、金属ガラスの金型を工業的に安価に、かつ大型の金型にも適用可能な製造法で提供することを課題としている。 As described above, in order to obtain a metal mold having fine irregularities by powder sintering utilizing the characteristics of metallic glass, it is possible to prevent crystallization during processing and increase the density while maintaining an amorphous structure, in particular, gold. It is necessary to increase the density of the processing surface to be the mold. An object of the present invention is to provide a metal glass mold at a low cost industrially and by a manufacturing method applicable to a large mold.
前記の問題を解消するために、本発明者らは鋭意検討を重ねた結果、金型の工業的な製造において問題となっていたこれらの課題について、金属ガラス粉末をホットプレスにより加圧焼結する際に、同時に母型となるパンチを用いて温度や圧力を精密に制御しつつ焼結することによって非晶質相を保ったまま高密度かつ高精度な金型を作製する方法を見出した。 In order to solve the above-mentioned problems, the present inventors have intensively studied, and as a result of these problems that have been a problem in the industrial production of molds, the metal glass powder is subjected to pressure sintering by hot pressing. At the same time, we found a method to produce a high-density and high-precision mold while maintaining the amorphous phase by sintering while precisely controlling the temperature and pressure using the punch that becomes the mold at the same time .
本発明によると、金属ガラス粉末をホットプレス装置を用いてガラス遷移温度以上、結晶化温度以下に昇温して焼結する際に、同時に母型となる金型を用いて、その中にガスアトマイズにより作製された粉末を充填し、金型成形面近傍の粉末の粘性流動性が高くするため、金型成形面の温度を焼結温度よりも高くすることにより非晶質相の特徴を保った表面が高密度、高精度の金型が得られるものである。 According to the present invention, when a metallic glass powder is sintered at a temperature higher than the glass transition temperature and lower than the crystallization temperature using a hot press apparatus, a metal mold is simultaneously used as a matrix, and gas atomization is performed therein. In order to increase the viscous fluidity of the powder in the vicinity of the molding surface of the mold, the amorphous phase was maintained by making the temperature of the molding surface higher than the sintering temperature. A mold having a high density and high accuracy on the surface can be obtained.
その発明の要旨とするところは、
（１）ホットプレス装置にて金属ガラス粉末をガラス遷移温度（Ｔｇ）以上、結晶化温度（Ｔｘ）以下に保った状態でパンチを用いて加圧して焼結すると同時に、焼結用パンチの表面を転写し金型成形面を作製するために、成形面の温度を粉末焼結温度よりも高くすることを特徴とする金属ガラス粉末焼結体金型の製造方法。
（２）前記（１）に記載された金属ガラス粉末焼結体金型の製造方法によって製造された金属ガラス粉末焼結体金型。
（３）前記（２）に記載された金属ガラス粉末焼結体金型によって作製された部材にある。
The gist of the invention is that
(1) The surface of the sintering punch is simultaneously pressed and sintered with a punch while the metal glass powder is maintained at a glass transition temperature (Tg) or higher and a crystallization temperature (Tx) or lower in a hot press apparatus. A method for producing a metal glass powder sintered body mold, wherein the temperature of the molding surface is made higher than the powder sintering temperature in order to transfer the mold and produce the mold molding surface.
(2) A metal glass powder sintered body mold manufactured by the method for manufacturing a metal glass powder sintered body mold described in (1) above.
(3) The member is produced by the metal glass powder sintered body mold described in (2).
以上述べたように、本発明により金属ガラス粉末の焼結と母型の型転写加工を同時に行うことで金型を工業的に安価で量産できる。しかも、その金型は金属ガラスの特徴である非晶質相を保持しているために耐食性や強度に優れ、耐久性が良い極めて優れた効果を奏するものである。 As described above, according to the present invention, metal molds can be mass-produced industrially at low cost by simultaneously performing sintering of metal glass powder and mold transfer processing of a mother mold. In addition, since the metal mold retains the amorphous phase that is characteristic of metallic glass, it has excellent corrosion resistance and strength, and has excellent durability and excellent effects.
以下、本発明について図面に従って詳細に説明する。
図１は、金属ガラス合金粉末加工装置を示す図である。この図に示すように、金属ダイ５中に金属ガラス合金粉末４を挿入し、上加圧用ラム２と一体となった表面を所望の形状に加工した母型となるパンチ６および下加圧用ラム３に挟み上加圧用ラム２をラム駆動用モーター１の駆動により金属ガラス合金粉末４を加圧する。この場合に上下加圧用ラム２、３に挟まれた金属ガラス合金粉末４の温度を調整せるための加熱用ヒーター７、８をそれぞれ上下加圧用ラム２、３に埋設し、この加熱用ヒーター７、８により、加圧温度を最適温度に制御する。
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a metallic glass alloy powder processing apparatus. As shown in this figure, a
図２は、本発明に係る金型製造工程を模式的に示した図である。図２（ａ）は金型および金属ガラス粉末をホットプレス装置に設置した加工前の状態を示す。この状態で加熱用ヒーター７、８により、金型パンチ６および金属ガラス合金粉末４の加熱を行う。ここで、金属ガラス合金粉末４の設定温度は金属ガラスのガラス遷移温度（Ｔｇ）から結晶化温度（Ｔｘ）までの過冷却液体領域のなかで、結晶化開始までの時間が長いガラス遷移温度近傍とする。一方、金型パンチ６の設定温度は、粉末焼結の金型表面の転写性を高めるために、ガラス遷移温度（Ｔｇ）から結晶化温度（Ｔｘ）の中間温度よりも高い温度に設定する。
FIG. 2 is a diagram schematically showing a mold manufacturing process according to the present invention. Fig.2 (a) shows the state before the process which installed the metal mold | die and the metal glass powder in the hot press apparatus. In this state, the
図２（ｂ）は金属ガラス粉末を加圧焼結し、焼結体を作製する工程を示す。金属ガラス粉末がガラス遷移温度近傍で加圧されることにより焼結が促進される。ここでパンチ表面９はガラス遷移温度近傍より高温になっているため、その近傍の粉末も加熱され、強度が低下し粘性流動性が増すことで金型パンチを精密に転写できる。 FIG.2 (b) shows the process of pressure-sintering metallic glass powder and producing a sintered compact. Sintering is promoted by pressing the metal glass powder near the glass transition temperature. Here, since the punch surface 9 is hotter than the vicinity of the glass transition temperature, the powder in the vicinity thereof is also heated, and the die punch can be accurately transferred by decreasing the strength and increasing the viscous fluidity.
図２（ｃ）は加圧焼結後、冷却し金型パンチを取り外した状態を示す。金属ガラス粉末焼結体が金型パンチ６の表面を転写し、金属ガラス粉末焼結金型１０が得られる。その場合、金型パンチ、およびダイは金属ガラス加工温度である５００〜６００℃にて充分な強度を持つ金型用鋼や超硬合金及びその表面にＰＶＤもしくはメッキなどの方法でＣｒＮなどを成膜したものが用いられる。
FIG. 2 (c) shows a state in which the die punch is removed after cooling by pressure sintering. The metal glass powder sintered body transfers the surface of the
以下、本発明について実施例によって具体的に説明する。
（実施例１）
ガスアトマイズによって流動性と充填性に優れた球状のＮｉ基金属ガラス合金粉末（成分：Ｎｉ60Ｎｂ15Ｔｉ20Ｚｒ5 ）を作製した。該粉末をＸ線回折により、非晶質を示すハローパターンとなった粒度（５３μｍ）以下に分級し、これを用いて金型を作製した。このＮｉ基金属ガラス合金粉末をＤＳＣ（示差熱分析）で測定したところ、ガラス遷移温度（Ｔｇ）は５６５℃、結晶化温度（Ｔｘ）は６１５℃であった。
Hereinafter, the present invention will be specifically described with reference to examples.
(Example 1)
A spherical Ni-based metallic glass alloy powder (component: Ni 60 Nb 15 Ti 20 Zr 5 ) having excellent fluidity and filling properties was produced by gas atomization. The powder was classified by X-ray diffraction to a particle size (53 μm) or less having a halo pattern showing an amorphous shape, and a mold was produced using this. When this Ni-based metallic glass alloy powder was measured by DSC (differential thermal analysis), the glass transition temperature (Tg) was 565 ° C. and the crystallization temperature (Tx) was 615 ° C.
一方、金属ガラス粉末を金型に焼結成形するためのパンチおよび、ダイをステライトにて作製した。上パンチ表面は、放電加工により幅０．５ｍｍ、深さ０．５ｍｍの溝を０．５ｍｍ間隔で作製したのち、鏡面研磨加工により、表面粗さＲｙ＝０．１μｍに仕上げた。この金型に金属ガラス合金粉末２ｇを充填後、プレス温度を上パンチが６００℃、下パンチが５７０℃、プレス圧２００ＭＰａなる条件で加圧焼結し、焼結体金型（φ１０ｍｍ×３ｍｍt）を得た。得られた金型はＸ線回折により、アモルファス相である事を確認し、レーザー顕微鏡により、金属ガラス金型に深さ０．５ｍｍ幅０．５ｍｍの溝が作製されていることを確認した。また、金属ガラス金型表面の粗さはＲｙ＝０．１〜０．１２μｍで、パンチの表面状態を転写していた。その結果、レーザー顕微鏡で１０枚を観察し、深さ０．５ｍｍ幅０．５ｍｍの溝部の角が丸くなっている領域があったものを不良として評価したところ、１０枚中不良は０枚であった。一方、上記と同様の粉末を金型を用いて上下パンチの温度を同じ５７０℃で加工した場合には、１０枚中不良が４枚発生した。 On the other hand, a punch and a die for sintering metal glass powder into a mold were produced with stellite. On the surface of the upper punch, grooves having a width of 0.5 mm and a depth of 0.5 mm were formed at intervals of 0.5 mm by electric discharge machining, and then finished to a surface roughness Ry = 0.1 μm by mirror polishing. After filling this metal mold with 2 g of metal glass alloy powder, press sintering was performed under the conditions that the press temperature was 600 ° C. for the upper punch, 570 ° C. for the lower punch, and 200 MPa press pressure, and the sintered body mold (φ10 mm × 3 mm t ) It was confirmed by X-ray diffraction that the obtained mold was an amorphous phase, and it was confirmed by a laser microscope that a groove having a depth of 0.5 mm and a width of 0.5 mm was formed in the metal glass mold. The surface roughness of the metal glass mold was Ry = 0.1 to 0.12 μm, and the surface state of the punch was transferred. As a result, 10 sheets were observed with a laser microscope, and when there was an area where the corner of the groove portion having a depth of 0.5 mm and a width of 0.5 mm was rounded, the defect was evaluated as 0. there were. On the other hand, when the same powder as above was processed at the same upper and lower punch temperatures of 570 ° C. using a mold, four defects out of 10 occurred.
（実施例２）
ガスアトマイズによって流動性と充填性に優れた球状のＦｅ−Ｃｏ基金属ガラス合金粉末（成分：Ｆｅ36Ｃｏ36Ｂ19.2Ｓｉ4.8 Ｎｂ4 ）を作製した。該粉末をＸ線回折により、非晶質を示すハローパターンとなった粒度（１５０μｍ）以下に分級し、これを用いて金型を作製した。このＦｅ−Ｃｏ基金属ガラス合金粉末をＤＳＣ（示差熱分析）で測定したところ、ガラス遷移温度（Ｔｇ）は５４０℃、結晶化温度（Ｔｘ）は５９５℃であった。
(Example 2)
A spherical Fe—Co based metallic glass alloy powder (component: Fe 36 Co 36 B 19.2 Si 4.8 Nb 4 ) having excellent fluidity and filling properties was produced by gas atomization. The powder was classified by X-ray diffraction to a particle size (150 μm) or less having a halo pattern showing an amorphous shape, and a mold was produced using this. When this Fe—Co based metal glass alloy powder was measured by DSC (differential thermal analysis), the glass transition temperature (Tg) was 540 ° C. and the crystallization temperature (Tx) was 595 ° C.
一方、金属ガラス粉末を金型に焼結成形するためのパンチおよび、ダイをステライトにて作製した。上パンチ表面は、放電加工により幅０．３ｍｍ、深さ０．３ｍｍの溝を０．９ｍｍ間隔で作製したのち、鏡面研磨加工により、表面粗さＲｙ＝０．１μｍに仕上げた。この金型にＦｅ−Ｃｏ基金属ガラス合金粉末１ｇを充填後、プレス温度を上パンチが５８０℃、下パンチが５６０℃、プレス圧４００ＭＰａなる条件で加圧焼結し、焼結体金型（φ１０ｍｍ×１．５ｍｍt）を得た。得られた金型はＸ線回折により、アモルファス相である事を確認し、レーザー顕微鏡により、金属ガラス金型に深さ０．５ｍｍ幅０．５ｍｍの溝が作製されていることを確認した。また、金属ガラス金型表面の粗さはＲｙ＝０．１〜０．１２μｍで、パンチの表面状態を転写していた。その結果、レーザー顕微鏡で１０枚を観察し、１０枚中不良は０枚であった。一方、上記と同様の粉末を金型を用いて上下パンチの温度を同じ５６０℃で加工した場合には、１０枚中不良が６枚発生した。 On the other hand, a punch and a die for sintering metal glass powder into a mold were produced with stellite. On the surface of the upper punch, grooves having a width of 0.3 mm and a depth of 0.3 mm were produced at intervals of 0.9 mm by electric discharge machining, and then finished to a surface roughness Ry = 0.1 μm by mirror polishing. After filling this mold with 1 g of Fe—Co-based metallic glass alloy powder, press sintering was performed under the conditions that the press temperature was 580 ° C. for the upper punch, 560 ° C. for the lower punch, and the press pressure was 400 MPa. φ10 mm × 1.5 mm t ) was obtained. It was confirmed by X-ray diffraction that the obtained mold was an amorphous phase, and it was confirmed by a laser microscope that a groove having a depth of 0.5 mm and a width of 0.5 mm was formed in the metal glass mold. The surface roughness of the metal glass mold was Ry = 0.1 to 0.12 μm, and the surface state of the punch was transferred. As a result, 10 sheets were observed with a laser microscope, and the number of defects among the 10 sheets was 0. On the other hand, when the same powder as described above was processed at the same upper and lower punch temperatures of 560 ° C. using a mold, 6 defects out of 10 occurred.
このように、ガスアトマイズにより作製した金属ガラス合金粉末をホットプレスにより加圧焼結する際に、同時に母型となるパンチを用いて温度と圧力を精密に制御しつつ焼結することによって、非晶質相を保ったまま、高密度かつ高精度な金型を工業的に安価に製造することが可能となり、しかも、その金型は金属ガラスの特性である非晶質相を保持しているために耐食性や強度に優れ、かつ耐久性の優れた金型を提供するものである。 In this way, when the metal glass alloy powder produced by gas atomization is pressure-sintered with a hot press, it is simultaneously sintered with precise control of temperature and pressure using a punch that becomes a matrix, thereby making amorphous It is possible to manufacture high-density and high-precision molds industrially at low cost while maintaining the quality phase, and the mold retains the amorphous phase that is characteristic of metallic glass. In addition, the present invention provides a mold having excellent corrosion resistance and strength and excellent durability.
１ ラム駆動用モーター
２ 上加圧用ラム
３ 下加圧用ラム
４ 金属ガラス合金粉末
５ 金属ダイ
６ 金型パンチ
７ 加熱用上ヒーター
８ 加熱用下ヒーター
９ 金型パンチ表面
１０ 金属ガラス粉末焼結金型
特許出願人 山陽特殊製鋼株式会社
代理人 弁理士 椎 名 彊
DESCRIPTION OF SYMBOLS 1 Ram drive
Patent Applicant Sanyo Special Steel Co., Ltd.
Attorney: Attorney Shiina
Claims (3)
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| JP2008267057A JP2009138263A (en) | 2007-11-16 | 2008-10-16 | Method for producing die by metal glass powder sintering, the die, and member produced thereby |
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| JP2007297652 | 2007-11-16 | ||
| JP2008267057A JP2009138263A (en) | 2007-11-16 | 2008-10-16 | Method for producing die by metal glass powder sintering, the die, and member produced thereby |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004090434A (en) * | 2002-08-30 | 2004-03-25 | Sumitomo Metal Ind Ltd | Mold and method for manufacturing that |
| JP2005272254A (en) * | 2004-03-26 | 2005-10-06 | Olympus Corp | Die for molding optical element, its manufacturing method and optical element |
| JP2008133516A (en) * | 2006-11-29 | 2008-06-12 | Nissan Motor Co Ltd | Compact of amorphous metal, manufacturing method and manufacturing apparatus therefor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004090434A (en) * | 2002-08-30 | 2004-03-25 | Sumitomo Metal Ind Ltd | Mold and method for manufacturing that |
| JP2005272254A (en) * | 2004-03-26 | 2005-10-06 | Olympus Corp | Die for molding optical element, its manufacturing method and optical element |
| JP2008133516A (en) * | 2006-11-29 | 2008-06-12 | Nissan Motor Co Ltd | Compact of amorphous metal, manufacturing method and manufacturing apparatus therefor |
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