EP1919645A1 - Verfahren zur herstellung metallhaltiger gusskörper und vorrichtung dafür - Google Patents
Verfahren zur herstellung metallhaltiger gusskörper und vorrichtung dafürInfo
- Publication number
- EP1919645A1 EP1919645A1 EP06778066A EP06778066A EP1919645A1 EP 1919645 A1 EP1919645 A1 EP 1919645A1 EP 06778066 A EP06778066 A EP 06778066A EP 06778066 A EP06778066 A EP 06778066A EP 1919645 A1 EP1919645 A1 EP 1919645A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal
- mold
- melt
- containing melt
- voltage source
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 57
- 239000002184 metal Substances 0.000 title claims abstract description 57
- 238000005266 casting Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000155 melt Substances 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 9
- 239000005300 metallic glass Substances 0.000 abstract description 8
- 238000013021 overheating Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000035040 seed growth Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/02—Use of electric or magnetic effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
Definitions
- the invention relates to the fields of materials science and process engineering and relates to a method for producing metal-containing castings, as can be used for example for the production of moldings from metallic glasses and an apparatus for implementing this method.
- a metallic glass is a metastable alloy that has no long-range order, unlike normal crystalline materials. Its structure is amorphous and resembles that of a liquid. To obtain the amorphous state on cooling, several conditions must be satisfied. Thus, nucleation and seed growth must be suppressed to freeze the structure of the liquid. To realize this, the metallic melt must be cooled very quickly, for example by contact with the surface of a very good heat-conducting heat sink. The quality of the thermal contact and the thickness and thermal conductivity of the liquid layer determine the cooling rate.
- a well-known and widespread method for casting metals and also massive metallic glasses is the casting into cold molds.
- the melt is forced by different measures in the mold and solidifies there in the form prescribed by the mold.
- the mold is made of good heat conducting material.
- the casting process is very fast. First, the metal is melted in a crucible, and then the melt is forced by gas pressure or centrifugal force into the mold.
- the surface of the mold In order to ensure a good thermal contact between the metallic melt and the mold, advantageously made of copper, the surface of the mold must be very clean. This can be easily realized by mechanical cleaning and pickling.
- the melt should wet the mold well. The wetting depends essentially on the viscosity and interfacial tension of the melt with respect to the copper mold and with respect to the ambient atmosphere. The viscosity depends very much on the temperature. It decreases exponentially with increasing temperature, while the interfacial tensions decrease linearly with increasing temperature. Small values of viscosity and interfacial tension, which are desirable for good wetting and for good filling of the mold, can in principle be set by a high temperature.
- the object of the present invention is to specify a method for producing metal-containing castings and a device therefor, in which in addition high cooling rates and a good mold filling during casting without overheating a metal-containing melt is achieved.
- a metal-containing melt is introduced into an electrically conductive casting mold, wherein the metal-containing melt and the mold are electrically conductively connected to the outputs of the same voltage source during introduction into a casting mold, so that through the boundary layer between the melt and form a preset current flows.
- the metal-containing melt to more than 50 wt .-% of a metal.
- molten amorphous metals are used as metal-containing melt.
- the metal-containing melt is connected via an electrode to a voltage source.
- the introduction of the metal-containing melt into the casting mold is realized by the die-casting method.
- the apparatus according to the invention for producing metal-containing castings there is an electrically conductive connection between a metal-containing melt and a voltage source.
- an electrically conductive mold is present, in which the metal-containing melt is to be introduced, which is also electrically connected to the same voltage source as the metal-containing melt.
- the metal-containing melt is in a device for melting out of metals, even more advantageously in an induction furnace.
- the metal-containing melt is connected via an electrode, advantageously via a tungsten electrode, to a voltage source.
- the metal-containing melt is introduced into the casting mold by means of die casting technology.
- the melting and casting of the metal-containing compounds takes place in a closed system Inert gas atmosphere.
- the likewise advantageously inductively molten metal-containing melt is pressed into the mold, for example by overpressure of the atmosphere, for example argon atmosphere.
- the tension can be changed for each shaping operation or even during a shaping operation.
- a short-circuit current between metal-containing melt and electrically conductive mold is predetermined.
- the main advantage of the solution according to the invention is the specific variability of the wetting behavior between melt and mold without overheating of the melt so that the melt wets the mold better and the contact between melt and mold becomes more homogeneous. Depending on the type of melt, specific property improvements result for different materials.
- Another advantage of the solution according to the invention is that the coercive force of the produced castings is smaller and their magnetization is higher by the application of electrical voltage during the molding process in soft magnetic materials. This is achieved by lower internal stresses during shaping, which is due to the more homogeneous cooling and then leads to improved magnetic and mechanical properties of the product according to the invention. In addition, complex shapes are better formed and the products according to the invention also become mechanically stronger.
- a metallic melt is produced in an induction furnace under argon atmosphere.
- a tungsten electrode which is connected to a voltage source, reaches into the metallic melt.
- the copper mold is also electrically connected to the voltage source. After applying the voltage of 230 V, the outflow opening in the induction furnace is opened. At the same time, an argon overpressure of 200 kPa is applied. As a result, the metallic melt is pressed into the recess in the copper mold and fills it completely due to the lower surface tension. After cooling and opening the copper mold is a complete annular disc with the desired dimensions.
- the alloy Fe B s 1S Cr 4 Mo 4 Ga 4 P-> C 5 B 515 can not be cast amorphously into an annular disk according to the prior art methods. According to the method of Example 1 can now be made of this alloy a complete annular disc, wherein the product is in an amorphous form.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005037982A DE102005037982B3 (de) | 2005-08-02 | 2005-08-02 | Verfahren zur Herstellung metallhaltiger Gusskörper und Vorrichtung dafür |
| PCT/EP2006/064809 WO2007014916A1 (de) | 2005-08-02 | 2006-07-28 | Verfahren zur herstellung metallhaltiger gusskörper und vorrichtung dafür |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1919645A1 true EP1919645A1 (de) | 2008-05-14 |
| EP1919645B1 EP1919645B1 (de) | 2010-04-21 |
Family
ID=37078404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06778066A Not-in-force EP1919645B1 (de) | 2005-08-02 | 2006-07-28 | Verfahren zur herstellung metallhaltiger gusskörper und vorrichtung dafür |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8002014B2 (de) |
| EP (1) | EP1919645B1 (de) |
| JP (1) | JP2009502515A (de) |
| KR (1) | KR20080036624A (de) |
| CN (1) | CN101237951A (de) |
| AT (1) | ATE464963T1 (de) |
| DE (2) | DE102005037982B3 (de) |
| WO (1) | WO2007014916A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941066B (zh) * | 2010-10-15 | 2012-07-04 | 哈尔滨工业大学 | 用于电场处理下浇铸金属的陶瓷铸型及采用其浇铸钛铝基合金的方法 |
| DE102011050149A1 (de) * | 2010-11-17 | 2012-05-24 | Ferrofacta Gmbh | Druckgussdüse und Druckgussverfahren |
| CN102974807A (zh) * | 2012-08-01 | 2013-03-20 | 南昌大学 | 一种提高液态金属充型能力的方法及装置 |
| US9802247B1 (en) | 2013-02-15 | 2017-10-31 | Materion Corporation | Systems and methods for counter gravity casting for bulk amorphous alloys |
| US10668529B1 (en) | 2014-12-16 | 2020-06-02 | Materion Corporation | Systems and methods for processing bulk metallic glass articles using near net shape casting and thermoplastic forming |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3498894A (en) * | 1967-01-13 | 1970-03-03 | Ibm | Preparation of compound semiconductors by fused salt electrolysis |
| US3752216A (en) * | 1969-05-14 | 1973-08-14 | Sandel Ind Inc | Apparatus for homogeneous refining and continuously casting metals and alloys |
| DE4207694A1 (de) * | 1992-03-11 | 1993-09-16 | Leybold Durferrit Gmbh | Vorrichtung fuer die herstellung von metallen und metall-legierungen hoher reinheit |
| JP2930880B2 (ja) * | 1994-10-14 | 1999-08-09 | 井上 明久 | 差圧鋳造式金属ガラスの製造方法および装置 |
| DE19614182C1 (de) * | 1996-04-11 | 1997-07-31 | Inteco Int Techn Beratung | Wassergekühlte Kokille zum Herstellen von Blöcken oder Strängen sowie deren Verwendung |
| DE19950037C2 (de) * | 1999-10-16 | 2001-12-13 | Drm Druckgus Gmbh | Verfahren und Vorrichtung zum Urformen eines Werkstoffes |
| US7517415B2 (en) * | 2003-06-02 | 2009-04-14 | University Of Virginia Patent Foundation | Non-ferromagnetic amorphous steel alloys containing large-atom metals |
| WO2005031015A1 (ja) * | 2003-09-25 | 2005-04-07 | National Institute Of Advanced Industrial Science And Technology | 金属ガラス体、その製造方法及び装置 |
| JP4701377B2 (ja) * | 2003-09-25 | 2011-06-15 | 独立行政法人産業技術総合研究所 | 金属ガラス体、その製造方法及び装置 |
| DE102004018664A1 (de) | 2004-04-13 | 2005-11-10 | Hahn-Meitner-Institut Berlin Gmbh | Verfahren und Anordnung zur Kristallzüchtung aus metallischen Schmelzen oder Schmelzlösungen |
-
2005
- 2005-08-02 DE DE102005037982A patent/DE102005037982B3/de not_active Expired - Fee Related
-
2006
- 2006-07-28 DE DE502006006811T patent/DE502006006811D1/de active Active
- 2006-07-28 AT AT06778066T patent/ATE464963T1/de active
- 2006-07-28 JP JP2008524498A patent/JP2009502515A/ja active Pending
- 2006-07-28 US US11/997,634 patent/US8002014B2/en not_active Expired - Fee Related
- 2006-07-28 CN CNA2006800285739A patent/CN101237951A/zh active Pending
- 2006-07-28 WO PCT/EP2006/064809 patent/WO2007014916A1/de not_active Ceased
- 2006-07-28 KR KR1020087004973A patent/KR20080036624A/ko not_active Ceased
- 2006-07-28 EP EP06778066A patent/EP1919645B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007014916A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005037982B3 (de) | 2007-03-15 |
| KR20080036624A (ko) | 2008-04-28 |
| EP1919645B1 (de) | 2010-04-21 |
| ATE464963T1 (de) | 2010-05-15 |
| US8002014B2 (en) | 2011-08-23 |
| CN101237951A (zh) | 2008-08-06 |
| WO2007014916A1 (de) | 2007-02-08 |
| JP2009502515A (ja) | 2009-01-29 |
| DE502006006811D1 (de) | 2010-06-02 |
| US20080295991A1 (en) | 2008-12-04 |
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