CA2284081A1 - Continuous steel supply for casting - Google Patents
Continuous steel supply for casting Download PDFInfo
- Publication number
- CA2284081A1 CA2284081A1 CA 2284081 CA2284081A CA2284081A1 CA 2284081 A1 CA2284081 A1 CA 2284081A1 CA 2284081 CA2284081 CA 2284081 CA 2284081 A CA2284081 A CA 2284081A CA 2284081 A1 CA2284081 A1 CA 2284081A1
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- reservoir
- molten metal
- mold
- pouring
- baffle
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A reservoir for molten metal is provided whereby the continuous filling of molds with such molten metal is allowed. Ladles of molten metal are utilized to provide such molten metal into one side of the reservoir. When such ladle is emptied and removed from pouring contact with the open side of the reservoir, the reservoir itself holds enough molten metal to allow molds to be continuously placed into a pouring station to receive molten metal from the closed side of the reservoir. A new ladle filled with molten metal can be brought into position to begin filling the open side of the reservoir with molten metal without interruption to the filing of molds at the closed side of the reservoir. A refractory baffle is utilized to separate the reservoir into an open side and a closed side. The reservoir is especially designed for bottom pressure filling of such molds with molten metal.
Description
6185-Ribbing CONTINUOUS STEEL SUPPLY FOR CASTING
BACKGROUND OF THE INVENTION
The present invention relates to a reservoir for holding molten metal during a pouring operation and, more particularly, to a reservoir for holding molten metal in a manner to allow the uninterrupted filling of molds while ladles supplying molten metal are removed from and brought to the reservoir.
Reservoirs for molten metal in foundry casting operations are known and are usually referred to as tundishes. The purpose of reservoirs is to provide a supply of molten metal that allows the nearly continuous filling of molds without concern of the presence of a full ladle of molten metal. Typically, molten metal is brought to such reservoirs in ladles and discharged from the ladle to fill the reservoir. The ladle is then removed and a replacement ladle is brought with a new supply of molten metal. Meanwhile, the pattern molds can be brought into operational contact with the reservoir to allow the filling of such molds on a nearby continuous, uninterrupted basis.
However, more sophisticated foundry operations such as the bottom pressure filling of graphite molds with molten steel necessarily require a more sophisticated reservoir of molten metal. In the bottom pressure pouring of metal upwardly into a mold, especially a machined graphite mold, it is usual practice to place a ladle of molten metal into a pouring tank which in turn is covered. The pouring tube extends downwardly from the cover into the molten metal nearly to the bottom of the ladle. The pouring tank itself is pressurized, usually with an inert gas such as argon to avoid reaction with the molten steel, and, upon additional pressurization, molten metal is forced upwardly through the pouring tube into a mold that is placed into operational contact with the top end of the pouring tube. The molds themselves are indexed into what is termed the pouring station and a gasket seal is utilized to seal the contact between the top of the pouring tube and the bottom of the mold. Further, when the mold is filled, a stopper arrangement is utilized to hold the molten metal within the mold until necessary solidification occurs.
However, as is readily apparent, it is necessary to stop filling such molds with molten metal when the ladle of molten metal being utilized at the pouring station is empty. When such ladle is empty, it is necessary to remove the cover from the pouring tank, and remove the ladle and replace it with a full ladle. Another method utilized to speed the replacement of such a pouring tank is set forth in Canadian Patent No. 1,123,571, assigned to the assignee of the present application. Such operation comprises the positioning of a covered pouring tank with a full ladle in a staging station that is tracked into contact with the pouring station. Upon emptying of the ladle in the pouring tank at the pouring station, such pouring tank is rolled from the pouring station on one leg of a V track. The other pouring tank with a full ladle is rolled into the pouring station on the other leg of a V track. This arrangement minimizes the down time in which molds cannot be filled with molten steel. It can be appreciated that in a high output steel foundry operation, for example in the manufacture of cast steel railway wheels, it is desirable to minimize such down time during which mold filling is not occurring.
Accordingly, it is an object of the present invention to eliminate pouring down time during ladle replacement.
It is an additional object of the present invention to assure uniform temperature of molten metal being filled into molds.
BACKGROUND OF THE INVENTION
The present invention relates to a reservoir for holding molten metal during a pouring operation and, more particularly, to a reservoir for holding molten metal in a manner to allow the uninterrupted filling of molds while ladles supplying molten metal are removed from and brought to the reservoir.
Reservoirs for molten metal in foundry casting operations are known and are usually referred to as tundishes. The purpose of reservoirs is to provide a supply of molten metal that allows the nearly continuous filling of molds without concern of the presence of a full ladle of molten metal. Typically, molten metal is brought to such reservoirs in ladles and discharged from the ladle to fill the reservoir. The ladle is then removed and a replacement ladle is brought with a new supply of molten metal. Meanwhile, the pattern molds can be brought into operational contact with the reservoir to allow the filling of such molds on a nearby continuous, uninterrupted basis.
However, more sophisticated foundry operations such as the bottom pressure filling of graphite molds with molten steel necessarily require a more sophisticated reservoir of molten metal. In the bottom pressure pouring of metal upwardly into a mold, especially a machined graphite mold, it is usual practice to place a ladle of molten metal into a pouring tank which in turn is covered. The pouring tube extends downwardly from the cover into the molten metal nearly to the bottom of the ladle. The pouring tank itself is pressurized, usually with an inert gas such as argon to avoid reaction with the molten steel, and, upon additional pressurization, molten metal is forced upwardly through the pouring tube into a mold that is placed into operational contact with the top end of the pouring tube. The molds themselves are indexed into what is termed the pouring station and a gasket seal is utilized to seal the contact between the top of the pouring tube and the bottom of the mold. Further, when the mold is filled, a stopper arrangement is utilized to hold the molten metal within the mold until necessary solidification occurs.
However, as is readily apparent, it is necessary to stop filling such molds with molten metal when the ladle of molten metal being utilized at the pouring station is empty. When such ladle is empty, it is necessary to remove the cover from the pouring tank, and remove the ladle and replace it with a full ladle. Another method utilized to speed the replacement of such a pouring tank is set forth in Canadian Patent No. 1,123,571, assigned to the assignee of the present application. Such operation comprises the positioning of a covered pouring tank with a full ladle in a staging station that is tracked into contact with the pouring station. Upon emptying of the ladle in the pouring tank at the pouring station, such pouring tank is rolled from the pouring station on one leg of a V track. The other pouring tank with a full ladle is rolled into the pouring station on the other leg of a V track. This arrangement minimizes the down time in which molds cannot be filled with molten steel. It can be appreciated that in a high output steel foundry operation, for example in the manufacture of cast steel railway wheels, it is desirable to minimize such down time during which mold filling is not occurring.
Accordingly, it is an object of the present invention to eliminate pouring down time during ladle replacement.
It is an additional object of the present invention to assure uniform temperature of molten metal being filled into molds.
SUMMARY OF THE INVENTION
The present invention provides a reservoir for molten metal that is adapted to receive such molten metal from a ladle and to dispense such molten metal into a mold in a foundry casting operation. The reservoir itself is usually comprised of a steel refractory lined structure and, because of the designed specialized bottom pressure pouring application, the reservoir is divided into two sections by a baffle arrangement. The baffle itself is usually a refractory material having openings at its lower portion to allow molten metal to flow from an open side of the reservoir to a closed or sealed side of the reservoir.
The open side of the reservoir is adapted to receive molten metal from a ladle. This arrangement could be a traditional top pouring from a ladle or could be a bottom discharge from a ladle as desired. The open side of the reservoir itself must extend upwardly to a vertical height above the height of metal to be received into any mold being filled from the closed side of the reservoir.
The closed side of the reservoir is adapted such that a mold can be filled with molten metal from such closed side of the reservoir, usually in a bottom pressure pouring operation.
Such bottom pressure pouring operation requires the sealing of the closed side of the reservoir, usually with a cover. The pressurization is usually accomplished with air or preferably an inert gas such as argon. A pouring tube extends downwardly through the cover of the sealed or closed side of the reservoir into the molten metal to near the bottom of the closed side of the reservoir.
The top or cover area of the closed side of the reservoir is adapted to receive a mold that is fit into a sealed relationship with the upper part of the pouring tube protruding through the cover. The bottom part of the mold is sealed, usually by the use of a gasket, to the top part of the pouring tube such that upon pressurization of the closed side of the reservoir, molten metal is forced upwardly through the pouring tube and into the mold, filling the mold from the bottom.
Such an operation is usually termed a bottom pressure pouring or bottom pressure casting operation. When molten steel is used to fill machined graphite molds, such operation represents the state of the art manufacture of coast steel railway wheels.
It can be seen that the baffle arrangement is necessary because the pressurization of gas above the molten metal on the closed side of the reservoir would force the level of molten metal in the reservoir downwardly as metal is forced upwardly through the pouring tube and into the mold. Such molten metal when forced downwardly in the closed side of the reservoir would accordingly be forced upwardly in the open side of the reservoir to a height about equal to the height of the molten metal in the mold being filled. Accordingly, it is necessary for the open side of the reservoir to extend upwardly to a height at least as high as the highest level of molten metal expected in any mold being filled.
It is also possible to provide heating, usually in the form of induction coils, or gas burners, around the reservoir to keep the molten metal at a desired temperature range to optimize pouring characteristics of the molten metal.
It is also desirable to design the cover of the closed side of the reservoir to receive the pouring tube in a manner that allows the pouring tube to be readily changed out and replaced with a new pouring tube. The ceramic pouring tubes typically last 4 number of pours and would accordingly require change out about daily. The baffle arrangement is also designed to be readily replaced by unifying the baffle structure and allowing it to be raised from its position between the open side and closed side of the reservoir and replaced with a newly constructed baffle structure.
As is typical in a molten metal handling arrangement, the refractory structure of the baffle would require rebuilding from time to time and the ready change out of the baffle would contribute to the capability of the present reservoir to provide molten metal to be pressure poured into molds on a nearly continuous basis.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings, Figure 1 is a side view in partial cross section of a molten metal reservoir in accordance with the present invention;
Figure 2 is a top view of a molten metal reservoir in accordance with the present invention;
Figure 3 is a side view of a baffle plate;
Figure 4 is a cross sectional view of a baffle plate;
Figure 5 is a top view of a baffle plate;
Figure 6 is a top view of a pouring cover;
Figure 7 is a partial side cross section of a pouring cover;
Figure 8 is a top view of a pouring cover and pouring tube; and Figure 9 is a partial cross section of a pouring cover and pouring tube.
DETAILED DESCRIPTION OF THE INVENTION
The reservoir for holding molten metal is shown generally at 10. The construction of such reservoir would usually be of steel lined with a refractory material or refractory brick.
- Reservoir 10 is divided into open side 12 and closed side 24. The division between open side 12 and closed side 24 is provided by baffle 44 comprised of an upper section and a lower section 42.
Lower section 42 includes openings 46 that allow molten metal to flow between open side 12 and closed side 24 of reservoir 10. Baffle 44 is typically constructed of refractory material or refractory brick. Further, a unifying frame structure is provided whereby baffle 44 can be removed from between open side 12 and closed side 24 of reservoir 10 to provide ready replacement with a new baffle as may be required from time to time.
Referring now to Figures 3-5, baffle 44 separates closed side 24 of reservoir 10 from open side 12. Top 62 of baffle 44 is constructed of a steel shell material.
Top 62 of baffle 44 is equipped with steel rings 64. Rings 64 serve two functions. The first function is for quick locking and unlocking of the baffle. The locking and unlocking is accomplished by placing and removing a metal pin (not shown). The baffle needs to be locked to keep the baffle in place while reservoir 10 is pressurized. The second function of rings 64 is for lifting baffle 44 from reservoir 10 for repair or replacement.
Baffle 44 itself is constructed of a ceramic material similar to the material used for baffles in tundishes on continuous steel casters. Openings 46 in baffle 44 are placed high enough to maintain an optimum level of molten steel but low enough to maintain a seal when the system if pressurized. Top 62 is made of steel and is received in slot arrangement 63 in the top edge of reservoir 10.
At the interface between the top of baffle 44 and the shell of reservoir 10, a ceramic material can be placed. This will prevent the flow of molten metal through the seam on open side 12 of reservoir 10 when the system is pressurized. It will also prevent the flow of air or inert gas through the seam on closed side 24 of reservoir 10 when then the system is pressurized.
It can be seen that open side 12 of reservoir 10 has an extended upper section 14 that terminates with an opening 20 at the top thereof. Ladle 16 provides a supply of molten metal, typically molten steel which is released through pouring spout 18 into upper section 14 and ultimately to open side 12 of reservoir 10. The ladle arrangement could also comprise a tiltable ladle with a side pouring spout. It may be necessary to construct some special refractory material at the bottom of open side 12 to provide for splashing or other wear that may be caused by molten metal falling from ladle 16.
Closed side 24 of reservoir 10 is seen to include a plug 26 which is typically of ceramic material which can be removed when it is necessary to allow molten metal to flow out from reservoir 10. Pouring cover 50 is provided to contact the upper walls of closed side 24 in a sealed arrangement. Pressurizing gas, either air or an inert gas such as argon, is injected through supply line 52 into the area above the normal molten metal level shown at 38.
Such pressurization allows molten metal to rise upwardly through pouring spout 28 and enter mold lower or drag section 32 and ultimately mold top or cope section 34. Pouring tube 28 is typically of a cylindrical ceramic material and is connected to the lower portion of cope section 32 by sealing gasket 30. Such sealing gasket is typically of fiberglass material to provide an air tight seal between the bottom of drag section 32 and upper section of pouring tube 28.
Under normal operating conditions without pressurization, the normal level of molten metal is shown at 38. This level is above openings 46 in the lower section 42 of baffle 44.
However, upon pressurization, molten metal is pushed downwardly in closed section 24 of reservoir 10 and upwardly to level 22 in open section 12 in the upper section 14 of open section 12 of reservoir 10.
Accordingly, molten metal is forced upwardly through pouring tube 28 to enter drag section 32 and ultimately cope section 34 of the mold to a level 36. As can be seen from comparing the vertical level of the molten metal at 36 in mold cope section 34 with the raised level of molten metal 22 in upper section 14 of open side 12 of reservoir 10, it is seen that these two levels are nearly identical.
Heating of reservoir 10 may be provided by induction coil shown at 40 or gas burners shown at 48, or other similar means to keep molten metal, usually molten steel, within reservoir 10 at the ideal temperature range for pouring into the mold.
Referring now to Figures 6-9, pouring cover 50 is removable to allow maintenance and repairs inside reservoir 10. Pouring cover 50 is equipped with steel rings 51 to allow ready removal by lifting using a crane. Pouring cover 51 is constructed of a steel material received in slot arrangement 53 around the top of reservoir 10.
At the interface between pouring cover 50 and the shell of the reservoir 10, a ceramic material can be placed. This will prevent the flow of air or inert gas through the seam on the sealed side of the reservoir when then the system is pressurized.
Top 29 of the pouring tube is constructed of a steel ring received in a slot arrangement in pouring cover 50.
At the interface between top 29 of pouring tube 28 and pouring cover 50 a ceramic material can be placed. This prevents the flow of air or inert gas through the seam on closed side 24 of reservoir 10 when then the system is pressurized.
The present invention provides a reservoir for molten metal that is adapted to receive such molten metal from a ladle and to dispense such molten metal into a mold in a foundry casting operation. The reservoir itself is usually comprised of a steel refractory lined structure and, because of the designed specialized bottom pressure pouring application, the reservoir is divided into two sections by a baffle arrangement. The baffle itself is usually a refractory material having openings at its lower portion to allow molten metal to flow from an open side of the reservoir to a closed or sealed side of the reservoir.
The open side of the reservoir is adapted to receive molten metal from a ladle. This arrangement could be a traditional top pouring from a ladle or could be a bottom discharge from a ladle as desired. The open side of the reservoir itself must extend upwardly to a vertical height above the height of metal to be received into any mold being filled from the closed side of the reservoir.
The closed side of the reservoir is adapted such that a mold can be filled with molten metal from such closed side of the reservoir, usually in a bottom pressure pouring operation.
Such bottom pressure pouring operation requires the sealing of the closed side of the reservoir, usually with a cover. The pressurization is usually accomplished with air or preferably an inert gas such as argon. A pouring tube extends downwardly through the cover of the sealed or closed side of the reservoir into the molten metal to near the bottom of the closed side of the reservoir.
The top or cover area of the closed side of the reservoir is adapted to receive a mold that is fit into a sealed relationship with the upper part of the pouring tube protruding through the cover. The bottom part of the mold is sealed, usually by the use of a gasket, to the top part of the pouring tube such that upon pressurization of the closed side of the reservoir, molten metal is forced upwardly through the pouring tube and into the mold, filling the mold from the bottom.
Such an operation is usually termed a bottom pressure pouring or bottom pressure casting operation. When molten steel is used to fill machined graphite molds, such operation represents the state of the art manufacture of coast steel railway wheels.
It can be seen that the baffle arrangement is necessary because the pressurization of gas above the molten metal on the closed side of the reservoir would force the level of molten metal in the reservoir downwardly as metal is forced upwardly through the pouring tube and into the mold. Such molten metal when forced downwardly in the closed side of the reservoir would accordingly be forced upwardly in the open side of the reservoir to a height about equal to the height of the molten metal in the mold being filled. Accordingly, it is necessary for the open side of the reservoir to extend upwardly to a height at least as high as the highest level of molten metal expected in any mold being filled.
It is also possible to provide heating, usually in the form of induction coils, or gas burners, around the reservoir to keep the molten metal at a desired temperature range to optimize pouring characteristics of the molten metal.
It is also desirable to design the cover of the closed side of the reservoir to receive the pouring tube in a manner that allows the pouring tube to be readily changed out and replaced with a new pouring tube. The ceramic pouring tubes typically last 4 number of pours and would accordingly require change out about daily. The baffle arrangement is also designed to be readily replaced by unifying the baffle structure and allowing it to be raised from its position between the open side and closed side of the reservoir and replaced with a newly constructed baffle structure.
As is typical in a molten metal handling arrangement, the refractory structure of the baffle would require rebuilding from time to time and the ready change out of the baffle would contribute to the capability of the present reservoir to provide molten metal to be pressure poured into molds on a nearly continuous basis.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings, Figure 1 is a side view in partial cross section of a molten metal reservoir in accordance with the present invention;
Figure 2 is a top view of a molten metal reservoir in accordance with the present invention;
Figure 3 is a side view of a baffle plate;
Figure 4 is a cross sectional view of a baffle plate;
Figure 5 is a top view of a baffle plate;
Figure 6 is a top view of a pouring cover;
Figure 7 is a partial side cross section of a pouring cover;
Figure 8 is a top view of a pouring cover and pouring tube; and Figure 9 is a partial cross section of a pouring cover and pouring tube.
DETAILED DESCRIPTION OF THE INVENTION
The reservoir for holding molten metal is shown generally at 10. The construction of such reservoir would usually be of steel lined with a refractory material or refractory brick.
- Reservoir 10 is divided into open side 12 and closed side 24. The division between open side 12 and closed side 24 is provided by baffle 44 comprised of an upper section and a lower section 42.
Lower section 42 includes openings 46 that allow molten metal to flow between open side 12 and closed side 24 of reservoir 10. Baffle 44 is typically constructed of refractory material or refractory brick. Further, a unifying frame structure is provided whereby baffle 44 can be removed from between open side 12 and closed side 24 of reservoir 10 to provide ready replacement with a new baffle as may be required from time to time.
Referring now to Figures 3-5, baffle 44 separates closed side 24 of reservoir 10 from open side 12. Top 62 of baffle 44 is constructed of a steel shell material.
Top 62 of baffle 44 is equipped with steel rings 64. Rings 64 serve two functions. The first function is for quick locking and unlocking of the baffle. The locking and unlocking is accomplished by placing and removing a metal pin (not shown). The baffle needs to be locked to keep the baffle in place while reservoir 10 is pressurized. The second function of rings 64 is for lifting baffle 44 from reservoir 10 for repair or replacement.
Baffle 44 itself is constructed of a ceramic material similar to the material used for baffles in tundishes on continuous steel casters. Openings 46 in baffle 44 are placed high enough to maintain an optimum level of molten steel but low enough to maintain a seal when the system if pressurized. Top 62 is made of steel and is received in slot arrangement 63 in the top edge of reservoir 10.
At the interface between the top of baffle 44 and the shell of reservoir 10, a ceramic material can be placed. This will prevent the flow of molten metal through the seam on open side 12 of reservoir 10 when the system is pressurized. It will also prevent the flow of air or inert gas through the seam on closed side 24 of reservoir 10 when then the system is pressurized.
It can be seen that open side 12 of reservoir 10 has an extended upper section 14 that terminates with an opening 20 at the top thereof. Ladle 16 provides a supply of molten metal, typically molten steel which is released through pouring spout 18 into upper section 14 and ultimately to open side 12 of reservoir 10. The ladle arrangement could also comprise a tiltable ladle with a side pouring spout. It may be necessary to construct some special refractory material at the bottom of open side 12 to provide for splashing or other wear that may be caused by molten metal falling from ladle 16.
Closed side 24 of reservoir 10 is seen to include a plug 26 which is typically of ceramic material which can be removed when it is necessary to allow molten metal to flow out from reservoir 10. Pouring cover 50 is provided to contact the upper walls of closed side 24 in a sealed arrangement. Pressurizing gas, either air or an inert gas such as argon, is injected through supply line 52 into the area above the normal molten metal level shown at 38.
Such pressurization allows molten metal to rise upwardly through pouring spout 28 and enter mold lower or drag section 32 and ultimately mold top or cope section 34. Pouring tube 28 is typically of a cylindrical ceramic material and is connected to the lower portion of cope section 32 by sealing gasket 30. Such sealing gasket is typically of fiberglass material to provide an air tight seal between the bottom of drag section 32 and upper section of pouring tube 28.
Under normal operating conditions without pressurization, the normal level of molten metal is shown at 38. This level is above openings 46 in the lower section 42 of baffle 44.
However, upon pressurization, molten metal is pushed downwardly in closed section 24 of reservoir 10 and upwardly to level 22 in open section 12 in the upper section 14 of open section 12 of reservoir 10.
Accordingly, molten metal is forced upwardly through pouring tube 28 to enter drag section 32 and ultimately cope section 34 of the mold to a level 36. As can be seen from comparing the vertical level of the molten metal at 36 in mold cope section 34 with the raised level of molten metal 22 in upper section 14 of open side 12 of reservoir 10, it is seen that these two levels are nearly identical.
Heating of reservoir 10 may be provided by induction coil shown at 40 or gas burners shown at 48, or other similar means to keep molten metal, usually molten steel, within reservoir 10 at the ideal temperature range for pouring into the mold.
Referring now to Figures 6-9, pouring cover 50 is removable to allow maintenance and repairs inside reservoir 10. Pouring cover 50 is equipped with steel rings 51 to allow ready removal by lifting using a crane. Pouring cover 51 is constructed of a steel material received in slot arrangement 53 around the top of reservoir 10.
At the interface between pouring cover 50 and the shell of the reservoir 10, a ceramic material can be placed. This will prevent the flow of air or inert gas through the seam on the sealed side of the reservoir when then the system is pressurized.
Top 29 of the pouring tube is constructed of a steel ring received in a slot arrangement in pouring cover 50.
At the interface between top 29 of pouring tube 28 and pouring cover 50 a ceramic material can be placed. This prevents the flow of air or inert gas through the seam on closed side 24 of reservoir 10 when then the system is pressurized.
Claims (13)
1. Apparatus for pouring molten metal comprising a ladle of molten metal, said ladle having a spout to release said molten metal, a reservoir to receive said molten metal from said ladle, a baffle separating said reservoir into an open side and a sealed side, said ladle releasing said molten metal into said open side of said reservoir, a mold received on said sealed side of said reservoir, a pouring tube extending into said mold from said sealed side of said reservoir, means to pressurize said sealed side of said reservoir to force molten metal upwardly through said pouring tube into said mold.
2. The apparatus of claim 1 wherein said open side of said reservoir extends upwardly to a height of the level of molten metal in said mold when filled.
3. The apparatus of claim 1 further comprising heating means to maintain said molten metal in said reservoir at a desired temperature range.
4. The apparatus of claim 1 further comprising a cover that receives said pouring tube and that extends across a top of said sealed side of said reservoir.
5. The apparatus of claim 1 wherein said baffle includes openings that are kept below the level of molten metal in said reservoir where said sealed side of said reservoir is pressurized.
6. The apparatus of claim 4 wherein said pouring tube is received in said cover in a manner such that said pouring tube can be replaced while said cover is in place across said top of said sealed side of said reservoir.
7. The apparatus of claim 1 wherein said baffle is received in said reservoir in a manner such that said baffle can be replaced while a quantity of molten metal remains in said reservoir.
8. A method of pouring molten metal comprising the steps of:
pouring molten metal from a ladle into a reservoir, providing said reservoir with an open compartment and a closed compartment, providing a removable baffle between said open compartment and said closed compartment, providing said baffle with openings such that said molten metal can flow between said open compartment and said closed compartment below a pre-determined height of said baffle, providing a mold on said closed compartment of said reservoir, providing a pouring tube extending from said mold into said molten metal in said closed compartment, and pressurizing said closed compartment to force molten metal through said pouring tube into said mold.
pouring molten metal from a ladle into a reservoir, providing said reservoir with an open compartment and a closed compartment, providing a removable baffle between said open compartment and said closed compartment, providing said baffle with openings such that said molten metal can flow between said open compartment and said closed compartment below a pre-determined height of said baffle, providing a mold on said closed compartment of said reservoir, providing a pouring tube extending from said mold into said molten metal in said closed compartment, and pressurizing said closed compartment to force molten metal through said pouring tube into said mold.
9. The method of claim 8 wherein upon pressurization of said closed compartment of said reservoir, said molten metal rises within said mold and also to an equivalent height in said open compartment.
10. The method of claim 8 further including the step of heating said reservoir to keep said molten metal at a pre-determined temperature range.
11. The method of claim 8 further including the step of providing a cover over said closed compartment that allows the pressurization of the gas above said molten metal in said closed compartment.
12. The method of claim 8 wherein said pressurizing of said closed compartment takes place when said molten metal is at a level above openings in said baffle.
13. The method of claim 8 wherein said mold is moved into contact with said pouring tube above said closed compartment, said mold is filled with molten metal while said closed compartment is pressurized, said closed compartment is depressurized and said mold is then moved from contact with said pouring tube above said closed compartment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24599299A | 1999-02-05 | 1999-02-05 | |
| US09/245,992 | 1999-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2284081A1 true CA2284081A1 (en) | 2000-08-05 |
Family
ID=31715362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2284081 Abandoned CA2284081A1 (en) | 1999-02-05 | 1999-09-27 | Continuous steel supply for casting |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2284081A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116855920A (en) * | 2023-09-05 | 2023-10-10 | 山西中设华晋铸造有限公司 | Steel strip casting process |
-
1999
- 1999-09-27 CA CA 2284081 patent/CA2284081A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116855920A (en) * | 2023-09-05 | 2023-10-10 | 山西中设华晋铸造有限公司 | Steel strip casting process |
| CN116855920B (en) * | 2023-09-05 | 2023-11-21 | 山西中设华晋铸造有限公司 | Steel strip casting process |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |