EP1288320A2 - Appareil et procédé pour la fabrication d'une mousse metallique - Google Patents

Appareil et procédé pour la fabrication d'une mousse metallique Download PDF

Info

Publication number: EP1288320A2
Authority: EP; European Patent Office
Prior art keywords: gas; melt; bubbles; metal; metal foam
Prior art date: 2001-06-15
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

Application number

EP02450138A

Other languages

German (de)

English (en)

Other versions

EP1288320B1 (fr

EP1288320A3 (fr

Inventor

Franz Dobesberger

Herbert Flankl

Dietmar Leitlmeier

Alois Birgmann

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Huette Klein Reichenbach GmbH

Original Assignee

Huette Klein Reichenbach GmbH

Priority date (The priority date 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 date listed.)

2001-06-15

Filing date

2002-06-14

Publication date

2003-03-05

2001-06-15 Priority claimed from AT0093601A external-priority patent/AT410104B/de

2002-04-22 Priority claimed from AT0062102A external-priority patent/AT411532B/de

2002-06-14 Application filed by Huette Klein Reichenbach GmbH filed Critical Huette Klein Reichenbach GmbH

2003-03-05 Publication of EP1288320A2 publication Critical patent/EP1288320A2/fr

2003-03-12 Publication of EP1288320A3 publication Critical patent/EP1288320A3/fr

2006-04-19 Application granted granted Critical

2006-04-19 Publication of EP1288320B1 publication Critical patent/EP1288320B1/fr

2022-06-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Classifications

- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/005—Casting metal foams
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/083—Foaming process in molten metal other than by powder metallurgy
- C22C1/086—Gas foaming process
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1103—Making porous workpieces or articles with particular physical characteristics
- B22F2003/1106—Product comprising closed porosity
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Definitions

the invention relates to a device for introducing gas into a melt foamable metal by means of at least one tube for the production of metal foam
the invention comprises a method for producing metal foam by Blowing gas into a foamable molten metal.
Such a material is a metal foam, the on the one hand, in comparison with a solid material, a much smaller, specific one Has weight and on the other hand, different mechanical properties and a has completely different material behavior.
An introduction of gas into the liquid metal can also according to EP-545957 B1 means of a vortex, wherein in the thus formed and solidified foam material There are pores with different diameters, from which a little reproducible material behavior results. Adjusting the pore size or Size distribution in the foam body is not sufficient possible.
the invention seeks to remedy the situation and sets itself the goal of a device of to create the type mentioned above, with which gas in the form of approximately having the same volume, adjustable in size pores or bubbles in the Melt is einbringbar.
Another object of the invention is the specification of a Method for creating a desired metal foam.
the gas inlet tube projecting protrudes into the melt and at the projecting end has a gas outlet cross-section with an area of 0.006 to 0.2 mm and a tube end face of less than 4.0 mm 2 .
the inventive geometric design of the gas inlet tube can created the first desired and stable gas bubble removal criteria in the melt which have substantially the same single bubble volume and accordingly resulting formed metal foam.
the formation of the device can be made with advantage so that the Outlet opening of the gas introduction tube to an extent of at least the 5 times, preferably at least 10 times, the value of the largest Inner dimension of the outlet opening is formed protruding into the melt. In order to are particularly effective stable tear-off criteria of the bubbles in the melt reachable.
the gas inlet tube a circular gas outlet opening and has a pipe end edge or annular pipe face, are special Economical pipe end formations for controlling the gas bubble size can be created.
the projecting into the melt gas inlet tube at least in Area of the gas outlet end a kugelsegment-, truncated cone or having truncated pyramidal outer contour. It is advantageous, the outer contour the gas introduction tube so that the angle that the generator of the Stump surface with the axis of the gas inlet channel includes a value of less than 60 °, preferably less than 45 °.
Plant technology but also with regard to the performance of the plant and the Product quality can also provide a substantial advantage if at least 2, preferably more than 2 gas inlet tubes, in particular each with the same mutual distance, preferably a value of greater than 10 times the Einrageausiqueses the outlet opening and the gas inlet tube in the Melting, in a replaceable nozzle in the melting vessel of Metal foam systems are arranged.
gas inlet tubes in particular each with the same mutual distance, preferably a value of greater than 10 times the Einrageausiquesconcees the outlet opening and the gas inlet tube in the Melting, in a replaceable nozzle in the melting vessel of Metal foam systems are arranged.
the invention aims at a further embodiment, with which also in continuous operation over long periods stable Gasblasenablinatekriterien Foaming a molten metal can be achieved.
the object to provide an embodiment of the device with which also in the Continuous operation over long periods of stable gas bubble removal criteria Foaming a molten metal can be achieved is achieved by that the gas inlet tube at least in the region of the protruding end of a ceramic consists.
the invention makes use of the knowledge that the ceramic formed parts of the device, optionally the entire device at Comparison with previously used steel-fabricated equipment with molten metal react significantly slower and at the same time with the same geometry the formation of a hydrophobic system with respect to a gas bubble formation in Allow entry of gas into the melt.
the ceramic is an oxide ceramic, in particular an aluminum oxide ceramic.
the further object of the invention is a method of the type mentioned specify with which high quality metal foam by blowing gas into it foamable metal can be created is achieved by a uniformity of the Diameter or the size of the individual bubbles and the size of the Gas bubbles through a geometric nozzle design and by adjusting the Influence parameters of the gas are controlled in the molten metal.
Process engineering but also with regard to a high product quality can continue from Be advantageous if the gas at a pressure of 0.3 to 12 bar, preferably 0.7 to 5 bar, is blown into the foaming metal.
Particularly lightweight or low density having metal foam body can be created when the metallic melt of light metal, preferably made of aluminum or an aluminum alloy. This can also be a achieved versatile material behavior at low mass of the part become.
the foamability of the metal, but also the formation of the foam matrix or the foam wall can be substantially improved if SiC particles and / or Al 2 O 3 particles and other non-metallic particles and / or particles of intermetallic phases are used to prepare the foamable molten metal be used. It is favorable in terms of stability and strength, in particular buckling strength of the foam walls when particles for stabilizing the metal foam with a size of 1 to 50 microns, preferably 3 to 20 microns, used and evenly distributed in the foam matrix, with excellent results can be achieved if in the base metal, a foamable molten metal with a volume fraction of particles of 2 to 50 vol .-%, in particular from 18 to 28 vol .-% is created.
an oxygen-containing gas preferably air
substantially pure oxygen is injected, in Surprisingly, the beneficial effects of a on the particle content of Melt tuned gas bubbles minimum height to be increased because at the Surface of the particle and metal-laden gas bubble at the same time a reinforcing acting oxide layer is formed.
the invention also aims to a flowable Metal foam with gas bubbles passing through walls of a liquid metal matrix solid reinforcing particles is limited. This goal is thereby achieved that the diameter of the largest gas bubbles broken by that the smallest gas bubbles gives a value of less than 2.5.
a flowable Metal foam can be used with high accuracy when using different means Parts are shaped and allowed to solidify, depending on individual bubble size and Ratio of a specific density of the part and its compression behavior at Drucknapssbeaufschlagung be achieved. Foam parts with a density of each 0.09 to 0.11 experience, for example, only slightly increasing Compressive stresses of 0.25 to 0.8 MPa compression ratios up to 70%.
a metal foam body which is both high-area and high punctiform mechanical stress withstand, is achieved by that at a Metal foam of the type mentioned the pores substantially spherical and / or ellipsoidal closed, with the largest each Diameter of the pores are distributed monomodally and the pores are essentially made out individual stabilized bubbles are formed and that the wall inner surfaces at least partially coated with an oxide.
a metal foam body according to the invention exhibits an isotropic aspect mechanical properties favorable monomodal size distribution of spatial evenly distributed pores additionally an oxide-reinforced pore wall structure, whereby an increased load capacity achieved in use or a period of use of components with a metal foam unit can be increased. Because of a Formation of the pores such that the pores are substantially single, stabilized bubbles correspond to a flowable metal foam, is suitable Inventive metal foam body for use in components not only at high planar load, but also excellent at high punctiform occurring Burden.
a gas inlet tube 1 is shown, which with an extent E in a Melt protrudes.
the gas inlet tube 1 has between inner surface 4 and outer surface 5 a constant wall thickness with a pipe end face 3, the into the melt S sticks up.
FIG. 2 shows a gas introduction tube 1 with a Einragetress E in a melt S, which tube 1 in the exit region a frustoconical or truncated pyramidal Outer contour 6, which in the extension at an angle to the axis 7 of a Gas inlet channel has.
a Gas inlet tube 1 can with high stability and strength of the base part a Pipe end face 3 formed with the smallest surface area up to a front edge become.
Fig. 3 is an embodiment with a nozzle 8, which is preferably arranged detachably in a wall 9 of a melt vessel, removable.
Three gas inlet tubes 1, 1 ', 1 "projecting into a melt S are arranged at a distance A 1 and A 2 from each other in the nozzle 8.
Such easily exchangeable nozzle rods 8 are preferably used when metal foams having substantially the same single bubble volume but different Produce bubble sizes, because thereby the formation criteria: size of the gas outlet cross-section and size of the gas inlet tube end face, can be changed in the short term.
Fig. 2 shows the pore size distribution of a Metal foam, in compliance with the AufMum lake invention was created. As can be seen by the histogram in Fig. 5, is at a monomodal distribution of pore sizes at a mean value of 4 mm Proportion of pores of about 6 mm proportionately only slightly higher than that of 2 mm, that is, the pore sizes are approximate to both sides of an average distributed to the same extent or the same frequency.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Manufacturing & Machinery (AREA)
Manufacture And Refinement Of Metals (AREA)
Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Powder Metallurgy (AREA)
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Manufacture Of Alloys Or Alloy Compounds (AREA)
Chemically Coating (AREA)

EP02450138A 2001-06-15 2002-06-14 Appareil et procédé pour la fabrication d'une mousse metallique Expired - Lifetime EP1288320B1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
AT9362001		2001-06-15
AT0093601A AT410104B (de)	2001-06-15	2001-06-15	Vorrichtung und verfahren zur herstellung von metallschaum
AT6212002		2002-04-22
AT0062102A AT411532B (de)	2002-04-22	2002-04-22	Vorrichtung und verfahren zur herstellung von metallschaum

Publications (3)

Publication Number	Publication Date
EP1288320A2 true EP1288320A2 (fr)	2003-03-05
EP1288320A3 EP1288320A3 (fr)	2003-03-12
EP1288320B1 EP1288320B1 (fr)	2006-04-19

Family

ID=25608370

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP02450138A Expired - Lifetime EP1288320B1 (fr)	2001-06-15	2002-06-14	Appareil et procédé pour la fabrication d'une mousse metallique

Country Status (10)

Country	Link
EP (1)	EP1288320B1 (fr)
JP (1)	JP2003112253A (fr)
AT (1)	ATE323785T1 (fr)
CA (1)	CA2390745C (fr)
CZ (1)	CZ302631B6 (fr)
DE (1)	DE50206447D1 (fr)
ES (1)	ES2263762T3 (fr)
NO (1)	NO335092B1 (fr)
PT (1)	PT1288320E (fr)
SI (1)	SI1288320T1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1419835A1 (fr) *	2002-09-09	2004-05-19	Hütte Klein-Reichenbach Gesellschaft m.b.H.	Procédé et dispositif pour la fabrication d'une mousse métallique fluide
DE102005037305A1 (de) *	2005-08-02	2007-03-29	Hahn-Meitner-Institut Berlin Gmbh	Verfahren zur pulvermetallurgischen Herstellung von Metallschaumstoff und von Teilen aus Metallschaumstoff
DE102006031213B3 (de) *	2006-07-03	2007-09-06	Hahn-Meitner-Institut Berlin Gmbh	Verfahren zur Herstellung von Metallschäumen und Metallschaum
DE102008000100A1 (de)	2008-01-18	2009-07-23	Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.	Leichtgewichtiger Grün- und Formkörper aus einem keramischen und/oder pulvermetallurgischen Material und Verfahren zu seiner Herstellung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102013103672A1 (de) *	2013-04-11	2014-10-30	Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.	Poren-Druckguss
CN112342423A (zh) *	2020-09-15	2021-02-09	安徽省新方尊自动化科技有限公司	一种泡沫铝枪托的加工方法

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GB1217597A (en) *	1968-10-03	1970-12-31	Carrier Engineering Co Ltd	Improvements in air distribution devices for delivering air to enclosures
GR71466B (fr) *	1978-03-06	1983-05-30	Alcan Res & Dev
US5112697A (en) *	1989-09-06	1992-05-12	Alcan International Limited	Stabilized metal foam body
JPH03170630A (ja) *	1989-11-29	1991-07-24	Mitsubishi Heavy Ind Ltd	発泡金属の製造方法
JP3045773B2 (ja) *	1991-05-31	2000-05-29	アルキャン・インターナショナル・リミテッド	粒子安定化発泡金属の成型スラブの製造方法と装置
US5186886A (en) *	1991-09-16	1993-02-16	Westinghouse Electric Corp.	Composite nozzle assembly for conducting a flow of molten metal in an electromagnetic valve
DE4139020C2 (de) *	1991-11-27	1994-02-24	Pantec Paneltechnik Gmbh	Vorrichtung und Verfahren zur Herstellung eines Metallschaums
US5281251A (en) *	1992-11-04	1994-01-25	Alcan International Limited	Process for shape casting of particle stabilized metal foam
JP2000176613A (ja) *	1998-12-17	2000-06-27	Japan Science & Technology Corp	溶融金属中への微細気泡の分散方法、その装置および微細気泡含有金属
JP2000263194A (ja) *	1999-03-15	2000-09-26	Nippon Steel Corp	溶湯噴射用ノズル
FR2792948B1 (fr) *	1999-04-27	2001-06-08	Pechiney Rhenalu	Procede et dispositif ameliores de degazage et de separation des inclusions d'un bain de metal liquide par injection de bulles de gaz

2002
- 2002-06-11 JP JP2002204812A patent/JP2003112253A/ja active Pending
- 2002-06-11 CZ CZ20022036A patent/CZ302631B6/cs not_active IP Right Cessation
- 2002-06-12 NO NO20022795A patent/NO335092B1/no not_active IP Right Cessation
- 2002-06-14 AT AT02450138T patent/ATE323785T1/de active
- 2002-06-14 DE DE50206447T patent/DE50206447D1/de not_active Expired - Lifetime
- 2002-06-14 SI SI200230333T patent/SI1288320T1/sl unknown
- 2002-06-14 PT PT02450138T patent/PT1288320E/pt unknown
- 2002-06-14 CA CA002390745A patent/CA2390745C/fr not_active Expired - Fee Related
- 2002-06-14 EP EP02450138A patent/EP1288320B1/fr not_active Expired - Lifetime
- 2002-06-14 ES ES02450138T patent/ES2263762T3/es not_active Expired - Lifetime

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1419835A1 (fr) *	2002-09-09	2004-05-19	Hütte Klein-Reichenbach Gesellschaft m.b.H.	Procédé et dispositif pour la fabrication d'une mousse métallique fluide
US7144636B2 (en)	2002-09-09	2006-12-05	Huette Klein-Reichenbach Gesellschaft M.B.H.	Process and device for manufacturing free-flowing metal foam
US7959852B2 (en) *	2002-09-09	2011-06-14	Hütte Klein-Reichenbach Gesellschaft M.B.H.	Process and device for manufacturing free-flowing metal foam
DE102005037305A1 (de) *	2005-08-02	2007-03-29	Hahn-Meitner-Institut Berlin Gmbh	Verfahren zur pulvermetallurgischen Herstellung von Metallschaumstoff und von Teilen aus Metallschaumstoff
DE102005037305B4 (de) *	2005-08-02	2007-05-16	Hahn Meitner Inst Berlin Gmbh	Verfahren zur pulvermetallurgischen Herstellung von Metallschaumstoff und von Teilen aus Metallschaumstoff
US8562904B2 (en)	2005-08-02	2013-10-22	Helmholtz-Zentrum Berlin Fuer Materialien Und Energie Gmbh	Method for the powder-metallurgical production of metal foamed material and of parts made of metal foamed material
DE102006031213B3 (de) *	2006-07-03	2007-09-06	Hahn-Meitner-Institut Berlin Gmbh	Verfahren zur Herstellung von Metallschäumen und Metallschaum
DE102008000100A1 (de)	2008-01-18	2009-07-23	Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.	Leichtgewichtiger Grün- und Formkörper aus einem keramischen und/oder pulvermetallurgischen Material und Verfahren zu seiner Herstellung

Also Published As

Publication number	Publication date
ES2263762T3 (es)	2006-12-16
NO20022795D0 (no)	2002-06-12
JP2003112253A (ja)	2003-04-15
CA2390745C (fr)	2007-06-05
SI1288320T1 (sl)	2006-08-31
NO20022795L (no)	2002-12-16
PT1288320E (pt)	2006-08-31
EP1288320B1 (fr)	2006-04-19
NO335092B1 (no)	2014-09-08
DE50206447D1 (de)	2006-05-24
CA2390745A1 (fr)	2002-12-15
EP1288320A3 (fr)	2003-03-12
ATE323785T1 (de)	2006-05-15
CZ302631B6 (cs)	2011-08-10
CZ20022036A3 (cs)	2003-02-12

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