US20120328470A1 - Master alloy production for glassy aluminum-based alloys - Google Patents
Master alloy production for glassy aluminum-based alloys Download PDFInfo
- Publication number
- US20120328470A1 US20120328470A1 US13/169,202 US201113169202A US2012328470A1 US 20120328470 A1 US20120328470 A1 US 20120328470A1 US 201113169202 A US201113169202 A US 201113169202A US 2012328470 A1 US2012328470 A1 US 2012328470A1
- Authority
- US
- United States
- Prior art keywords
- crucible
- alloy
- flow
- outlet
- inert gas
- 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.)
- Abandoned
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/08—Amorphous alloys with aluminium as the major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/10—Crucibles
Definitions
- PA0009512U-U73.12-668KL and FORGING OF GLASSY ALUMINUM-BASED ALLOYS, Ser. No. ______; Attorney Docket No. PA0009508U-U73.12-671KL. All referenced incorporated herein.
- Aluminum alloys are important in many industries. Glassy Al-based alloys and their devitrified derivatives are currently being considered for applications in the aerospace industry. These alloys involve the addition of rare earth and transition metal elements. These alloys have high strength and, when processed appropriately, have high ductility.
- Al-based alloys When Al-based alloys are produced in large quantities, they are often direct chill cast into molds that drop into well-like openings in the ground.
- reactive materials such as Al—Li—X alloys
- care must be exercised to preclude or prevent reaction of the Li with any oxidant such as air or water.
- more reactive elements such as Yttrium and other rare earths, even more care is needed because exposure to water that is used to cool direct chill molds could result in fire and/or an explosion.
- Al-based alloys such as Al—Y—Ni—Co alloys are devitrified glass-forming aluminum alloys that derive their strength from a nanometer-sized grain structure and nanometer-sized intermetallic phase or phases.
- the presence of hydrogen destroys the ductility of these alloys. Consequently, it is necessary to produce master alloys with hydrogen contents of 1 ppm or less. Examples of such alloys are disclosed in co-owned U.S. Pat. Nos. 6,974,510 and 7,413,621, the disclosures of which are incorporated herein by reference in their entirety.
- master alloy for devitrified glass-forming Al-based alloys can be produced in a process that avoids hydrogen pickup.
- the molten metal is isolated from the environment to a substantial degree.
- the process includes the use of a bottom-pour or side-pour crucible that is “covered” with an inert gas such as argon.
- the gas cover includes a physical cover on the top of the crucible into which argon or another inert gas such as nitrogen is bled into the crucible to form a positive pressure. The heavier argon forces out any air to minimize exposure of the melt to air.
- the metal is poured out from the side or bottom of the crucible, rather than tipping to pour out the top. It is poured into a launder or pipe that is sealed and attached to the crucible, and is also filled with an inert gas such as argon.
- the molten metal flows through a launder or launder/tundish combination and is deposited directly into molds, which are also filled with inert gas such as argon.
- FIG. 1 shows one embodiment of a bottom pour furnace with a vertical feed for producing aluminum alloy ingots while avoiding hydrogen pickup.
- FIG. 2 shows another embodiment of a bottom pour furnace with a horizontal feed for producing aluminum alloy ingots while avoiding hydrogen pickup.
- FIG. 3 is a possible cross section for the horizontal feed launders of the apparatus of FIG. 2 .
- FIG. 4 is a flow diagram illustrating the method of forming aluminum master alloy ingots.
- FIG. 1 illustrates a bottom pour furnace 10 generally with a vertical feed.
- the entire furnace is inside an inert chamber 11 , having a solid top 17 , with gas feed 13 introducing argon or another inert gas such as nitrogen. It is more effective if the inert gas is heavier than air, as argon is, to more easily push out any air that is initially present in chamber 11 .
- a top-feed crucible 15 is located inside chamber 11 . Inside crucible 15 is a quantity of aluminum and various alloy elements in the form of chips, shot, rod, etc. that is to be made into master alloy ingots.
- the aluminum alloy can be any alloy but it has been discovered that the glassy devitrified alloys such as those disclosed in co-owned U.S. Pat. Nos. 6,974,510 and 7,413,621, can be formed into low oxygen and low hydrogen master alloy ingots using the method of this invention.
- the alloy in crucible 15 is purged with argon or another inert gas to drive out oxygen and any other reactive gas. Hydrogen from moisture is also driven out.
- Crucible 15 may be any low moisture/low volatiles alumina crucible, such as those produced by St. Gobain, or a graphite crucible with a spall-free alumina coating.
- Typical crucibles are ceramic cylinders that are about two feet in diameter and about three feet deep.
- the alloy is melted in crucible 15 and exits the bottom of crucible through launder 19 , so that the flow of molten alloy is controlled by position-control door 21 .
- Launder may not be needed in some designs of crucible 15 .
- the passage out of crucible 15 is also accomplished in an inert atmosphere via inert gas feed 23 .
- Tundish 25 is a funnel-shaped vessel into which the molten metal is poured.
- the purpose of a tundish is to allow the molten metal to reach a desired height (with a desired head pressure) so that there is a constant pour rate. It has been discovered that a slower rate precluded bubbles from forming in the melt. The height can be adjusted so there is no splashing of the metal into the molds.
- Flowing molten alloy 27 pours into waffle ingot molds 29 carried by conveyor belt 31 , also in an inert atmosphere.
- Allowing the molten alloy to drain down from the bottom of crucible 15 eliminates a major problem in prior art furnaces, in that the dross that accumulates on the top of the molten pool of alloy remains at the top and does not have to be removed until crucible 15 is cleaned prior to recharging with more alloy. Also, the dew point can be monitored, further preventing undesirable gas from contacting the sensitive elements of the alloy, thus preserving the low hydrogen/oxygen content of the master alloy.
- a hygrometer with a computer can be used for measuring the amount of moisture, and therefore hydrogen, in the gases both at the source for 13 and 23 , and within chamber 11 as a function of time. Best results are obtained when the dew point is ⁇ 110° F. ( ⁇ 78.9° C.) or lower.
- a commercially available monitor such as an ALSCAN may be connected to a computer so that hydrogen readings in the melt may also be taken in real time. Similar readings in the launder can be used to monitor hydrogen there as well, which is to be as low as possible, i.e., less than 1 ppm.
- a bottom pour furnace 100 generally is shown in FIG. 2 .
- a first inert chamber 111 having a solid top 117 , is maintained in an inert state via inert gas feed 113 .
- Crucible 115 is filled or purged with an inert gas to drive out all reactive gasses, including hydrogen via the gas from 113 .
- a launder 119 angled downward, is maintained with an inert atmosphere by a plurality of inert gas feeds 123 down stream of metal flow control door 121 .
- Launder 119 has a typical cross section as shown in FIG. 3 , with a steel or other hard casing 141 , a ceramic mold or center passage 143 and the opening 145 through which the molten alloy flows.
- Tundish 125 controls the pour rate and pour height of molten alloy into waffle ingot molds 129 that are carried by conveyor belt 131 .
- inert gas is maintained in second inert chamber 211 by inert gas feed 213 .
- FIG. 4 is a flow diagram of the method of this invention.
- Aluminum and the required elements in the form of chips, shot, rod, etc. (Step 311 ) are selected and placed in an enclosed crucible having an inert atmosphere (Step 313 ) with a positive pressure to drive out other gasses.
- the input stock is melted (Step 315 ) to form a molten alloy.
- the molten alloy is transferred (Step 317 ) to a mold while maintaining an inert atmosphere at least until the ingot is solidified.
- the ingot is then removed (Step 319 ) and available for subsequent processing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Apparatus is provided for forming aluminum alloy ingots in a sealed chamber having a source of inert gas using a crucible positioned inside the chamber for melting aluminum alloy powder. The crucible has a solid top and a source of inert gas therein. An outlet in the crucible is positioned to draw molten alloy from the crucible at a point proximate the lowest point in the crucible. A tundish adapted to control the flow of molten alloy from the crucible on a path to at least one ingot mold out of the sealed chamber
Description
- This application is related to the following co-pending applications that are filed on even date herewith and are assigned to the same assignee: DIFFUSION BONDING OF GLASSY ALUMINUM-BASED ALLOYS, Ser. No. ______, Attorney Docket No. PA0009506U-U73.12-665; EXTRUSION OF GLASSY ALUMINUM-BASED ALLOYS, Ser. No. ______; Attorney Docket No. PA0009510U-U73.12-667KL; PRODUCTION OF ATOMIZED POWDER FOR GLASSY ALUMINUM-BASED ALLOYS, Ser. No. ______, Attorney Docket No. PA0009512U-U73.12-668KL; and FORGING OF GLASSY ALUMINUM-BASED ALLOYS, Ser. No. ______; Attorney Docket No. PA0009508U-U73.12-671KL. All referenced incorporated herein.
- Aluminum alloys are important in many industries. Glassy Al-based alloys and their devitrified derivatives are currently being considered for applications in the aerospace industry. These alloys involve the addition of rare earth and transition metal elements. These alloys have high strength and, when processed appropriately, have high ductility.
- One of the key requirements for high ductility is control of the uptake of hydrogen. While all Al-based alloys are sensitive to hydrogen, alloys containing rare earth elements are particularly susceptible to the effects of hydrogen during alloy production.
- When Al-based alloys are produced in large quantities, they are often direct chill cast into molds that drop into well-like openings in the ground. For reactive materials such as Al—Li—X alloys, care must be exercised to preclude or prevent reaction of the Li with any oxidant such as air or water. For more reactive elements such as Yttrium and other rare earths, even more care is needed because exposure to water that is used to cool direct chill molds could result in fire and/or an explosion.
- Al-based alloys such as Al—Y—Ni—Co alloys are devitrified glass-forming aluminum alloys that derive their strength from a nanometer-sized grain structure and nanometer-sized intermetallic phase or phases. The presence of hydrogen destroys the ductility of these alloys. Consequently, it is necessary to produce master alloys with hydrogen contents of 1 ppm or less. Examples of such alloys are disclosed in co-owned U.S. Pat. Nos. 6,974,510 and 7,413,621, the disclosures of which are incorporated herein by reference in their entirety.
- It is necessary to find an alternative process for production of these highly reactive Al-based alloys.
- It has now been discovered that master alloy for devitrified glass-forming Al-based alloys can be produced in a process that avoids hydrogen pickup. The molten metal is isolated from the environment to a substantial degree. The process includes the use of a bottom-pour or side-pour crucible that is “covered” with an inert gas such as argon. The gas cover includes a physical cover on the top of the crucible into which argon or another inert gas such as nitrogen is bled into the crucible to form a positive pressure. The heavier argon forces out any air to minimize exposure of the melt to air.
- The metal is poured out from the side or bottom of the crucible, rather than tipping to pour out the top. It is poured into a launder or pipe that is sealed and attached to the crucible, and is also filled with an inert gas such as argon. The molten metal flows through a launder or launder/tundish combination and is deposited directly into molds, which are also filled with inert gas such as argon.
-
FIG. 1 shows one embodiment of a bottom pour furnace with a vertical feed for producing aluminum alloy ingots while avoiding hydrogen pickup. -
FIG. 2 shows another embodiment of a bottom pour furnace with a horizontal feed for producing aluminum alloy ingots while avoiding hydrogen pickup. -
FIG. 3 is a possible cross section for the horizontal feed launders of the apparatus ofFIG. 2 . -
FIG. 4 is a flow diagram illustrating the method of forming aluminum master alloy ingots. -
FIG. 1 illustrates a bottom pourfurnace 10 generally with a vertical feed. The entire furnace is inside aninert chamber 11, having asolid top 17, withgas feed 13 introducing argon or another inert gas such as nitrogen. It is more effective if the inert gas is heavier than air, as argon is, to more easily push out any air that is initially present inchamber 11. A top-feed crucible 15 is located insidechamber 11. Inside crucible 15 is a quantity of aluminum and various alloy elements in the form of chips, shot, rod, etc. that is to be made into master alloy ingots. The aluminum alloy can be any alloy but it has been discovered that the glassy devitrified alloys such as those disclosed in co-owned U.S. Pat. Nos. 6,974,510 and 7,413,621, can be formed into low oxygen and low hydrogen master alloy ingots using the method of this invention. - The alloy in
crucible 15 is purged with argon or another inert gas to drive out oxygen and any other reactive gas. Hydrogen from moisture is also driven out. Crucible 15 may be any low moisture/low volatiles alumina crucible, such as those produced by St. Gobain, or a graphite crucible with a spall-free alumina coating. Typical crucibles are ceramic cylinders that are about two feet in diameter and about three feet deep. - The alloy is melted in
crucible 15 and exits the bottom of crucible throughlaunder 19, so that the flow of molten alloy is controlled by position-control door 21. Launder may not be needed in some designs ofcrucible 15. With or withoutlaunder 19, the passage out of crucible 15 is also accomplished in an inert atmosphere viainert gas feed 23. - Tundish 25 is a funnel-shaped vessel into which the molten metal is poured. The purpose of a tundish is to allow the molten metal to reach a desired height (with a desired head pressure) so that there is a constant pour rate. It has been discovered that a slower rate precluded bubbles from forming in the melt. The height can be adjusted so there is no splashing of the metal into the molds. Flowing
molten alloy 27 pours intowaffle ingot molds 29 carried byconveyor belt 31, also in an inert atmosphere. - Allowing the molten alloy to drain down from the bottom of
crucible 15 eliminates a major problem in prior art furnaces, in that the dross that accumulates on the top of the molten pool of alloy remains at the top and does not have to be removed untilcrucible 15 is cleaned prior to recharging with more alloy. Also, the dew point can be monitored, further preventing undesirable gas from contacting the sensitive elements of the alloy, thus preserving the low hydrogen/oxygen content of the master alloy. - For the two embodiments as discussed herein, a hygrometer with a computer can be used for measuring the amount of moisture, and therefore hydrogen, in the gases both at the source for 13 and 23, and within
chamber 11 as a function of time. Best results are obtained when the dew point is −110° F. (−78.9° C.) or lower. A commercially available monitor such as an ALSCAN may be connected to a computer so that hydrogen readings in the melt may also be taken in real time. Similar readings in the launder can be used to monitor hydrogen there as well, which is to be as low as possible, i.e., less than 1 ppm. - In an alternative embodiment, a bottom pour
furnace 100 generally is shown inFIG. 2 . A firstinert chamber 111, having a solid top 117, is maintained in an inert state viainert gas feed 113.Crucible 115 is filled or purged with an inert gas to drive out all reactive gasses, including hydrogen via the gas from 113. Alaunder 119, angled downward, is maintained with an inert atmosphere by a plurality of inert gas feeds 123 down stream of metalflow control door 121.Launder 119 has a typical cross section as shown inFIG. 3 , with a steel or otherhard casing 141, a ceramic mold orcenter passage 143 and theopening 145 through which the molten alloy flows.Tundish 125 controls the pour rate and pour height of molten alloy intowaffle ingot molds 129 that are carried byconveyor belt 131. Again inert gas is maintained in secondinert chamber 211 byinert gas feed 213. -
FIG. 4 is a flow diagram of the method of this invention. Aluminum and the required elements in the form of chips, shot, rod, etc. (Step 311) are selected and placed in an enclosed crucible having an inert atmosphere (Step 313) with a positive pressure to drive out other gasses. The input stock is melted (Step 315) to form a molten alloy. The molten alloy is transferred (Step 317) to a mold while maintaining an inert atmosphere at least until the ingot is solidified. The ingot is then removed (Step 319) and available for subsequent processing. - Both bottom and side pouring embodiments have been found to be effective in producing satisfactory ingots. The advantage of the system of
FIG. 1 is that the system is more compact with the launder going straight down. However, if the pouring goes too fast and can't be stopped, the risk of overpouring onto the floor exists. In the system ofFIG. 2 , more space is used but there can be multiple metal flow gates to contain failure at the bottom of the furnace. - While the invention has been described with reference to an exemplary embodiment(s), it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment(s) disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (20)
1. Apparatus for forming aluminum alloy ingots, comprising:
a sealed chamber having a source of inert gas;
a crucible positioned inside the chamber for melting aluminum alloy input stock including, but not limited to, chips, shot, rod, bar, etc., the sealed chamber having a solid top and a source of inert gas therein adapted to drive out other atmosphere;
an outlet in the crucible positioned to draw molten alloy from the crucible at a point proximate the lowest point in the crucible; and
a tundish adapted to control the flow of molten alloy from the crucible on a path to at least one ingot mold while maintaining an inert atmosphere during the flow of alloy to the mold and out of the sealed chamber.
2. The apparatus of claim 1 , wherein the outlet on the crucible is positioned to flow alloy out the bottom of the crucible.
3. The apparatus of claim 1 , wherein the outlet on the crucible is positioned to flow alloy out of the lower side of the crucible.
4. The apparatus of claim 1 , wherein the outlet includes a launder having, but not limited to, a cylindrical cross section for transferring the molten alloy from the crucible to the tundish.
5. The apparatus of claim 1 , wherein the inert gas is argon.
6. The apparatus of claim 1 , wherein the alloy is a devitrified glass-forming aluminum alloys having a nanometer-sized grain structure and nanometer-sized intermetallic phase or phases.
7. A method of forming aluminum alloy ingots, comprising the steps of:
melting aluminum alloy feed stock in a crucible having an inert atmosphere;
drawing molten alloy from the crucible at a point below the inert atmosphere; and
maintaining an inert atmosphere during the flow of alloy from the crucible to a mold.
8. The method of claim 7 , wherein the outlet of the crucible means is proximate the bottom of the crucible.
9. The method of claim 7 , wherein the outlet of the crucible is positioned to flow alloy out of the lower side of the crucible.
10. The method of claim 7 , wherein the the molten alloy is transferred from the crucible to the mold is performed with a launder having a cylindrical or other cross section.
11. The method of claim 7 , wherein the inert gas is argon.
12. The method of claim 7 , wherein the alloy is a devitrified glass-forming aluminum alloys having a nanometer-sized grain structure and nanometer-sized intermetallic phase or phases.
13. A method of forming aluminum alloy ingots, comprising the steps of:
melting a quantity of aluminum alloy feed stock in a crucible, the crucible being positioned inside a chamber having an inert atmosphere at a pressure sufficient to drive out ambient atmosphere, the crucible melting the feed stock to a molten alloy;
removing molten alloy from the crucible through an outlet at a point proximate the lowest point of the crucible;
controlling the flow of molten alloy from the crucible to at least one ingot mold while maintaining an inert atmosphere, the flow being controlled with a tundish; and
removing the at least one ingot mold from an inert atmosphere.
14. The method of claim 13 , wherein the outlet means on the crucible means is positioned to flow alloy out the bottom of the crucible.
15. The method of claim 13 , wherein the outlet means on the crucible means is positioned to flow alloy out of the lower side of the crucible.
16. The method of claim 13 , wherein the outlet includes a launder having a cylindrical or other cross section for transferring the molten alloy from the crucible to the tundish.
17. The method of claim 13 , wherein the inert gas is argon.
18. The method of claim 13 , which further includes the step of maintaining the dew point in the crucible between −35° F. (−37.2° C.) and −110° F. (−78.9° C.) or lower.
19. The method of claim 13 , wherein the alloy is a devitrified glass-forming aluminum alloy having a nanometer-sized grain structure and nanometer-sized intermetallic phase or phases.
20. An aluminum alloy formed by the method of claim 19 .
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/169,202 US20120328470A1 (en) | 2011-06-27 | 2011-06-27 | Master alloy production for glassy aluminum-based alloys |
EP12165809.0A EP2567764B1 (en) | 2011-06-27 | 2012-04-26 | Master alloy production for glassy aluminum-based alloys |
US14/086,540 US20140076463A1 (en) | 2011-06-27 | 2013-11-21 | Master alloy production for glassy aluminum-based alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/169,202 US20120328470A1 (en) | 2011-06-27 | 2011-06-27 | Master alloy production for glassy aluminum-based alloys |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US201113169194A Division | 2011-06-27 | 2011-06-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/086,540 Division US20140076463A1 (en) | 2011-06-27 | 2013-11-21 | Master alloy production for glassy aluminum-based alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120328470A1 true US20120328470A1 (en) | 2012-12-27 |
Family
ID=46049248
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/169,202 Abandoned US20120328470A1 (en) | 2011-06-27 | 2011-06-27 | Master alloy production for glassy aluminum-based alloys |
US14/086,540 Abandoned US20140076463A1 (en) | 2011-06-27 | 2013-11-21 | Master alloy production for glassy aluminum-based alloys |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/086,540 Abandoned US20140076463A1 (en) | 2011-06-27 | 2013-11-21 | Master alloy production for glassy aluminum-based alloys |
Country Status (2)
Country | Link |
---|---|
US (2) | US20120328470A1 (en) |
EP (1) | EP2567764B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015006466A1 (en) | 2013-07-10 | 2015-01-15 | United Technologies Corporation | Aluminum alloys and manufacture methods |
CN108296457A (en) * | 2018-04-13 | 2018-07-20 | 无锡隆达金属材料有限公司 | Improve combination smelting equipment and its application of alloy-steel casting lumber recovery |
US11123790B2 (en) | 2017-10-16 | 2021-09-21 | General Electric Company | Apparatus for casting a mold |
US11123791B2 (en) | 2017-10-16 | 2021-09-21 | General Electric Company | Method for casting a mold |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103162539B (en) * | 2013-03-27 | 2015-07-15 | 湖南巴陵炉窑节能股份有限公司 | Method of transferring and pouring aluminum liquid in process of preparation of electrician round aluminum rod |
CN109097596B (en) * | 2018-10-19 | 2021-05-25 | 佛山市南海创利有色金属制品有限公司 | Molten aluminum transfer method for metal casting |
CN112442616A (en) * | 2019-09-03 | 2021-03-05 | 天津大学 | High-hardness aluminum-based nanocrystalline alloy and preparation method thereof |
CN111663058B (en) * | 2020-06-28 | 2021-06-01 | 沈阳航空航天大学 | Fe-Al alloy used as aluminum alloy additive and preparation method and application thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3467167A (en) * | 1966-09-19 | 1969-09-16 | Kaiser Ind Corp | Process for continuously casting oxidizable metals |
US4688621A (en) * | 1984-03-28 | 1987-08-25 | Falih Darmara | Method and apparatus for casting rapidly solidified ingots |
US4832105A (en) * | 1988-01-13 | 1989-05-23 | The Interlake Corporation | Investment casting method and apparatus, and cast article produced thereby |
US5346184A (en) * | 1993-05-18 | 1994-09-13 | The Regents Of The University Of Michigan | Method and apparatus for rapidly solidified ingot production |
US6974510B2 (en) | 2003-02-28 | 2005-12-13 | United Technologies Corporation | Aluminum base alloys |
-
2011
- 2011-06-27 US US13/169,202 patent/US20120328470A1/en not_active Abandoned
-
2012
- 2012-04-26 EP EP12165809.0A patent/EP2567764B1/en active Active
-
2013
- 2013-11-21 US US14/086,540 patent/US20140076463A1/en not_active Abandoned
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015006466A1 (en) | 2013-07-10 | 2015-01-15 | United Technologies Corporation | Aluminum alloys and manufacture methods |
US10450636B2 (en) | 2013-07-10 | 2019-10-22 | United Technologies Corporation | Aluminum alloys and manufacture methods |
EP3739073A1 (en) | 2013-07-10 | 2020-11-18 | United Technologies Corporation | Aluminum alloys and manufacture methods |
US11123790B2 (en) | 2017-10-16 | 2021-09-21 | General Electric Company | Apparatus for casting a mold |
US11123791B2 (en) | 2017-10-16 | 2021-09-21 | General Electric Company | Method for casting a mold |
CN108296457A (en) * | 2018-04-13 | 2018-07-20 | 无锡隆达金属材料有限公司 | Improve combination smelting equipment and its application of alloy-steel casting lumber recovery |
Also Published As
Publication number | Publication date |
---|---|
EP2567764A1 (en) | 2013-03-13 |
EP2567764B1 (en) | 2014-01-01 |
US20140076463A1 (en) | 2014-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2567764B1 (en) | Master alloy production for glassy aluminum-based alloys | |
Grandfield et al. | Direct-chill casting of light alloys: science and technology | |
US4248630A (en) | Method of adding alloy additions in melting aluminum base alloys for ingot casting | |
EP2540420B1 (en) | Production of atomized powder for glassy aluminum-based alloys | |
JPH0135881B2 (en) | ||
US9707621B2 (en) | System for metal atomisation and method for atomising metal powder | |
US10465263B2 (en) | System and method for adding molten lithium to a molten aluminium melt | |
JPH04504981A (en) | Induced skull spinning of reactive alloys | |
US5263689A (en) | Apparatus for making alloy power | |
US9783871B2 (en) | Method of producing aluminium alloys containing lithium | |
JP4134836B2 (en) | Method for refining aluminum or aluminum alloy | |
Van Ende | Formation and morphology of non-metallic inclusions in aluminium killed steels | |
EP0487535B1 (en) | Cast composite material having a matrix containing a stable oxide-forming element | |
RU2007101384A (en) | METHOD FOR CASTING AND INSTALLATION FOR CASTING OF ALUMINUM OR ALUMINUM ALLOYS | |
Hartford | 12, Patent Application Publication o Pub. No.: US 2014/0076463A1 | |
JP2002079367A (en) | Automatic continuous casting system and forging system | |
JPS6114065A (en) | Manufacture of metallic block, casting or section into whichhard metallic particle is buried and device thereof | |
JP7296883B2 (en) | Grain refinement using direct vibrational coupling | |
Kamaraj et al. | State of the art control measures for aluminium fade and SEN clogging during steelmaking operations | |
JP2006077290A (en) | Method for producing titanium ingot | |
Ditze et al. | Strip casting of magnesium with the single‐belt process | |
EP1989336B1 (en) | Reactor intended for titanium production | |
Grandfield et al. | Aluminium Tapping and Molten Metal Handling in Primary Smelters | |
WO2021024704A1 (en) | METHOD FOR CASTING Ti-AL BASED ALLOY | |
WO2021192875A1 (en) | Graphite nozzle for bottom tapping and ti-al alloy casting method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UNITED TECHNOLOGIES CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WATSON, THOMAS J.;REEL/FRAME:026504/0446 Effective date: 20110623 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: DARPA, VIRGINIA Free format text: CONFIRMATORY LICENSE;ASSIGNOR:UNITED TECHNOLOGIES CORPORATION;REEL/FRAME:031200/0669 Effective date: 20130521 |