CN109097596B - Molten aluminum transfer method for metal casting - Google Patents
Molten aluminum transfer method for metal casting Download PDFInfo
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- CN109097596B CN109097596B CN201811223845.1A CN201811223845A CN109097596B CN 109097596 B CN109097596 B CN 109097596B CN 201811223845 A CN201811223845 A CN 201811223845A CN 109097596 B CN109097596 B CN 109097596B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a molten aluminum transferring method for metal casting, which comprises the following steps in sequence; step S1: checking the cleaning degree of the transfer pouring chute, cleaning sundries in the flow chute, removing caking matters on the inner wall of the flow chute, pouring partial clear water into the flow chute, observing whether the flow chute has a liquid seepage condition, and monitoring the amount of aluminum liquid in the main furnace through an observation hole in a furnace door of the main furnace; step S2: placing a temperature measuring rod at a position 35-45 cm away from the inlet of the launder and about 45-50 cm deep of the molten aluminum, recording the temperature, and installing a throttling device on the launder when the temperature reaches the transfer temperature and the temperature of the molten aluminum is 720-760 ℃; the invention is beneficial to reducing the flow velocity of the aluminum liquid, is convenient to change the flow velocity of the aluminum liquid by adjusting the angle of the throttle plate, and is also beneficial to the installation and the disassembly of the throttle device; is beneficial to detecting the components of the sample.
Description
Technical Field
The invention relates to the field of metal casting, in particular to a method for transferring molten aluminum for metal casting.
Background
The metal casting is a technological process of smelting metal into liquid meeting certain requirement, pouring the liquid into a casting mold, cooling, solidifying and cleaning to obtain a casting with preset shape, size and performance. The casting blank is almost shaped, so that the purpose of no machining or little machining is achieved, the cost is reduced, and the time is reduced to a certain extent. Fusion casting is one of the fundamental processes in the modern mechanical manufacturing industry. The metal casting process comprises a transfer step.
However, the prior transfer-injection sampling process flow has the following defects: the flow speed of the molten aluminum during transferring can not be well controlled, and the molten aluminum is easy to splash, so that personnel are injured; when detecting a sample, the components of the sample are not detected; aiming at the defects, a method for transferring and pouring aluminum liquid for metal casting is necessary.
Disclosure of Invention
The invention aims to provide an aluminum liquid transfer method for metal casting, which is beneficial to reducing the flow velocity of aluminum liquid, is convenient to change the flow velocity of the aluminum liquid by adjusting the angle of a throttle plate, and is also beneficial to the installation and the disassembly of a throttle device; is beneficial to detecting the components of the sample.
The purpose of the invention can be realized by the following technical scheme:
a method for transferring molten aluminum for metal casting comprises the following steps in sequence;
step S1: checking the cleaning degree of the transfer pouring chute, cleaning sundries in the flow chute, removing caking matters on the inner wall of the flow chute, pouring partial clear water into the flow chute, observing whether the flow chute has a liquid seepage condition, and monitoring the amount of aluminum liquid in the main furnace through an observation hole in a furnace door of the main furnace;
step S2: placing a temperature measuring rod at a position 35-45 cm away from the inlet of the launder and about 45-50 cm deep of the molten aluminum, recording the temperature, and installing a throttling device on the launder when the temperature reaches the transfer temperature and the temperature of the molten aluminum is 720-760 ℃;
step S3: when the amount of the aluminum liquid in the main furnace reaches the rated capacity, when any one of the two sub-furnaces is subjected to water, opening the furnace door of any sub-furnace by 15-20 cm, opening the furnace eye of the main furnace by using a furnace eye penetrating tool, and slowly flowing the aluminum liquid to the sub-furnaces through a throttling device on a launder;
step S4: extracting a proper amount of aluminum liquid, pouring the aluminum liquid into a sample mold for preheating, taking a sample before, during, after the transfer, detecting and analyzing the sample, respectively cutting the head by 5cm and the tail by 10cm, taking a low-power test piece from the head and the tail respectively, wherein the thickness of the low-power test piece is 2.5-3 cm, and checking the size and the internal chemical components of the sample through a component detector;
step S5: when the aluminum liquid is transferred to the secondary furnace to reach the rated capacity, monitoring the amount of the aluminum liquid in the secondary furnace through observing observation holes of the secondary furnace, simultaneously observing the amount of the aluminum liquid in the primary furnace, reserving 1/6-1/3 of the aluminum liquid in the primary furnace, and judging according to the submergence degree of an aluminum ingot;
step S6: and after the transfer is finished, blocking a furnace eye of the primary furnace by using an iron plug rod, waiting for aluminum liquid in the runner to be transferred into the secondary furnace, closing a furnace door of the secondary furnace, waiting for the runner to stand for 30min, cleaning the runner, and then retracting the tool for resetting.
As a further scheme of the invention: in the step S1, after the clear water is poured into the flow groove to observe the seepage condition of the flow groove, the seepage condition occurs, the seepage gap is filled by welding, the clear water in the flow groove is pumped out by a water pump and is discharged out of the flow groove, and the residual clear water in the flow groove is dried by a hot air blower.
As a further scheme of the invention: in step S1, the amount of aluminum liquid in the main furnace may be monitored through any one of an observation hole formed in the door of the main furnace and a liquid level detection device.
As a further scheme of the invention: in the step S2, the throttling device includes two L-shaped fixing plates, two rectangular fixing plates, a cross-shaped slider, two throttle plates, a throttle hole, a transverse sliding groove, a first through hole, a threaded hole, a first nut, a vertical sliding groove, a bolt, a second through hole, a second nut, and a threaded rod, the two L-shaped fixing plates are symmetrically disposed, the transverse sliding groove is disposed at a middle position of one side of each L-shaped fixing plate, and the vertical sliding groove is disposed at a middle position of one side of each L-shaped fixing plate;
the vertical sliding groove and the transverse sliding groove are mutually and vertically communicated;
a rectangular fixing plate is fixedly welded at one end of the top of the L-shaped fixing plate, a first through hole is formed in the middle of one side of the rectangular fixing plate and penetrates through the other side of the rectangular fixing plate, a second through hole is formed in one side of the rectangular fixing plate and is located right below the first through hole, the second through hole penetrates through the other side of the rectangular fixing plate, a threaded hole is formed in the top end of one side of the cross-shaped sliding block and penetrates through the other side of the cross-shaped sliding block, the cross-shaped sliding block is correspondingly clamped in the vertical sliding groove and the transverse sliding groove, and one end, with threads, of the bolt penetrates through the second through hole and is in threaded;
wherein, the number of the bolts is two;
a plurality of throttling holes are formed in one side of the throttling plate and penetrate through the other side of the throttling plate, threaded rods are symmetrically mounted at the top ends of two corresponding sides of the throttling plate and correspondingly penetrate through first through holes in two ends of the throttling plate, and first nuts and second nuts are sleeved on the outer sides of two ends of the threaded rods, which are located on the rectangular fixing plate, respectively.
As a further scheme of the invention: the vertical sliding groove and the horizontal sliding groove are equal in depth.
As a further scheme of the invention: the inner diameter of the first through hole is equal to the outer diameter of the threaded rod.
The invention has the beneficial effects that:
1. the threaded rods at the two ends of the throttle plate are inserted into the first through hole, and the threaded rods are positioned at the outer sides of the two ends of the rectangular fixing plate and are respectively sleeved with the first nut and the second nut, so that the throttle plate is rotated to a proper angle, and then the first nut and the second nut are screwed, so that the first nut and the second nut move oppositely to clamp the rectangular fixing plate between the first nut and the second nut, and the threaded rods are fixed, the throttle plate is fixed conveniently, the angle of the throttle plate is adjusted conveniently, and the throttle plate is matched with chutes with different slopes for use; the two L-shaped fixing plates are lapped on two ends of the top of the runner, the two ends of the runner are clamped between the L-shaped fixing plates and the cross-shaped slider, the cross-shaped slider is driven to move by rotating the bolt, and the bolt is connected with the threaded hole in a threaded manner, so that when the cross-shaped slider moves to the outer side of the runner, the bolt is screwed, the L-shaped fixing plates and the cross-shaped slider extrude side plates at two ends of the runner to be fixed in an extruding manner, and the L-shaped fixing plates are fixed in an easily fixed manner; in the process, when the aluminum liquid flows to the other end of the flow groove through the throttling hole on the throttling plate, and meanwhile, part of the aluminum liquid flows to the other end of the flow groove through a gap between the throttling plate and the flow groove, the flow speed of the aluminum liquid is favorably reduced, and meanwhile, the flow speed of the aluminum liquid is convenient to change by adjusting the angle of the throttling plate, and the installation and the disassembly of a throttling device are also favorably realized;
2. the method comprises the steps of extracting a proper amount of aluminum liquid, pouring the aluminum liquid into a sample mold for preheating, taking a sample before, during and after transfer, detecting and analyzing the sample, respectively cutting the head by 5cm and the tail by 10cm, taking a low-power test piece at the head and the tail by 2.5-3 cm, detecting the size of the sample and the chemical composition inside the sample through a composition detector, and detecting the composition of the sample.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is an overall elevational view of the present invention;
FIG. 4 is an overall right side view of the present invention;
in the figure: 1. an L-shaped fixing plate; 2. a rectangular fixing plate; 3. a cross-shaped sliding block; 4. a throttle plate; 5. an orifice; 6. a transverse chute; 7. a first through hole; 8. a threaded hole; 9. a first nut; 10. a vertical chute; 11. a bolt; 12. a second through hole; 13. a second nut; 14. a threaded rod.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a technical solution: a method for transferring and injecting molten aluminum for metal casting comprises the following steps:
example 1:
a method for transferring molten aluminum for metal casting comprises the following steps in sequence;
step S1: checking the cleaning degree of the transfer pouring chute, cleaning sundries in the flow chute, removing caking matters on the inner wall of the flow chute, pouring partial clear water into the flow chute, observing whether the flow chute has a liquid seepage condition, and monitoring the amount of aluminum liquid in the main furnace through an observation hole in a furnace door of the main furnace;
after the clear water is poured into the flow groove to observe the seepage condition of the flow groove, the seepage condition occurs, the seepage gap is filled by welding, the clear water in the flow groove is pumped out by a water pump and discharged out of the flow groove, and the residual clear water in the flow groove is dried by a hot air blower, so that the leakage is prevented;
the amount of the aluminum liquid in the primary furnace can be monitored through any one of an observation hole on the furnace door of the primary furnace or a liquid level detection device, so that the amount of the aluminum liquid can be monitored;
step S2: placing a temperature measuring rod at a position 35-45 cm away from the inlet of the launder and about 45-50 cm deep of the molten aluminum, recording the temperature, and installing a throttling device on the launder when the temperature reaches the transfer temperature and the temperature of the molten aluminum is 720-760 ℃;
the throttling device comprises an L-shaped fixing plate 1, a rectangular fixing plate 2, a cross-shaped sliding block 3, a throttling plate 4, a throttling hole 5, a transverse sliding chute 6, a first through hole 7, a threaded hole 8, a first nut 9, a vertical sliding chute 10, a bolt 11, a second through hole 12, a second nut 13 and a threaded rod 14, wherein the two L-shaped fixing plates 1 are symmetrically arranged, the transverse sliding chute 6 is arranged in the middle of one side of each L-shaped fixing plate 1, and the vertical sliding chute 10 is arranged in the middle of one side of each L-shaped fixing plate 1;
the vertical sliding groove 10 is vertically communicated with the transverse sliding groove 6;
a rectangular fixing plate 2 is fixedly welded at one end of the top of the L-shaped fixing plate 1, a first through hole 7 is formed in the middle of one side of the rectangular fixing plate 2, the first through hole 7 penetrates to the other side of the rectangular fixing plate 2, a second through hole 12 is formed in one side of the rectangular fixing plate 2, which is located right below the first through hole 7, the second through hole 12 penetrates to the other side of the rectangular fixing plate 2, a threaded hole 8 is formed in the top end of one side of the cross-shaped sliding block 3, the threaded hole 8 penetrates to the other side of the cross-shaped sliding block 3, the cross-shaped sliding block 3 is correspondingly clamped inside the vertical sliding groove 10 and the transverse sliding groove 6, and the threaded end of the bolt 11 penetrates;
two bolts 11 are arranged;
a plurality of throttling holes 5 are formed in one side of the throttling plate 4, the throttling holes 5 penetrate through the other side of the throttling plate 4, threaded rods 14 are symmetrically mounted at the top ends of two corresponding sides of the throttling plate 4, the threaded rods 14 correspondingly penetrate through first through holes 7 in two ends of the throttling plate 4, and first nuts 9 and second nuts 13 are respectively sleeved on the outer sides of the two ends of the rectangular fixing plate 2, of the threaded rods 14;
wherein, the vertical sliding chute 10 and the horizontal sliding chute 6 have the same depth;
wherein the inner diameter of the first through hole 7 is equal to the outer diameter of the threaded rod 14;
the threaded rods 14 at the two ends of the throttle plate 4 are inserted into the first through holes 7, and the threaded rods 14 are positioned at the outer sides of the two ends of the rectangular fixing plate 2 and are respectively sleeved with the first nuts 9 and the second nuts 13, so that the throttle plate 4 is rotated to a proper angle, and then the first nuts 9 and the second nuts 13 are screwed, so that the first nuts 9 and the second nuts 13 move oppositely to clamp the rectangular fixing plate 2 therebetween, and the threaded rods 14 are fixed, thereby being beneficial to fixing the throttle plate 4, being convenient for adjusting the angle of the throttle plate 4 and being matched with chutes with different slopes for use; the two L-shaped fixing plates 1 are lapped on two ends of the top of the runner, the two ends of the runner are clamped between the L-shaped fixing plates 1 and the cross-shaped slider 3, the bolt 11 is rotated to drive the cross-shaped slider 3 to move, and the bolt 11 is screwed when the cross-shaped slider 3 moves to the outer side of the runner due to the threaded connection of the bolt 11 and the threaded hole 8, so that the L-shaped fixing plates 1 and the cross-shaped slider 3 extrude and fix side plates at the two ends of the runner, and the L-shaped fixing plates 1 are favorably fixedly mounted; in the process, when the aluminum liquid flows to the other end of the flow groove through the throttling hole 5 on the throttling plate 4, and meanwhile, part of the aluminum liquid flows to the other end of the flow groove through a gap between the throttling plate 4 and the flow groove, the flow velocity of the aluminum liquid is favorably reduced, and meanwhile, the flow velocity of the aluminum liquid is convenient to change by adjusting the angle of the throttling plate 4, and the installation and the disassembly of a throttling device are favorably realized;
step S3: when the amount of the aluminum liquid in the main furnace reaches the rated capacity, when any one of the two sub-furnaces is subjected to water, opening the furnace door of any sub-furnace by 15-20 cm, opening the furnace eye of the main furnace by using a furnace eye penetrating tool, and slowly flowing the aluminum liquid to the sub-furnaces through a throttling device on a launder;
step S4: extracting a proper amount of aluminum liquid, pouring the aluminum liquid into a sample mold for preheating, taking a sample before, during, after the transfer, detecting and analyzing the sample, respectively cutting the head by 5cm and the tail by 10cm, taking a low-power test piece from the head and the tail respectively, wherein the thickness of the low-power test piece is 2.5-3 cm, and checking the size and the internal chemical components of the sample through a component detector;
step S5: when the aluminum liquid is transferred to the secondary furnace to reach the rated capacity, monitoring the amount of the aluminum liquid in the secondary furnace through observing observation holes of the secondary furnace, simultaneously observing the amount of the aluminum liquid in the primary furnace, reserving 1/6-1/3 of the aluminum liquid in the primary furnace, and judging according to the submergence degree of an aluminum ingot;
step S6: and after the transfer is finished, blocking a furnace eye of the primary furnace by using an iron plug rod, waiting for aluminum liquid in the runner to be transferred into the secondary furnace, closing a furnace door of the secondary furnace, waiting for the runner to stand for 30min, cleaning the runner, and then retracting the tool for resetting.
Example 2:
a method for transferring molten aluminum for metal casting comprises the following steps in sequence;
step S1: checking the cleaning degree of the transfer pouring chute, cleaning sundries in the flow chute, removing caking matters on the inner wall of the flow chute, pouring partial clear water into the flow chute, observing whether the flow chute has a liquid seepage condition, and monitoring the amount of aluminum liquid in the main furnace through an observation hole in a furnace door of the main furnace;
after the clear water is poured into the flow groove to observe the seepage condition of the flow groove, the seepage condition occurs, the seepage gap is filled by welding, the clear water in the flow groove is pumped out by a water pump and discharged out of the flow groove, and the residual clear water in the flow groove is dried by a hot air blower, so that the leakage is prevented;
the amount of the aluminum liquid in the primary furnace can be monitored through any one of an observation hole on the furnace door of the primary furnace or a liquid level detection device, so that the amount of the aluminum liquid can be monitored;
step S2: placing a temperature measuring rod at a position 35-45 cm away from the inlet of the launder and about 45-50 cm deep of the molten aluminum, recording the temperature, and installing a throttling device on the launder when the temperature reaches the transfer temperature and the temperature of the molten aluminum is 720-760 ℃;
the throttling device comprises an L-shaped fixing plate 1, a rectangular fixing plate 2, a cross-shaped sliding block 3, a throttling plate 4, a throttling hole 5, a transverse sliding chute 6, a first through hole 7, a threaded hole 8, a first nut 9, a vertical sliding chute 10, a bolt 11, a second through hole 12, a second nut 13 and a threaded rod 14, wherein the two L-shaped fixing plates 1 are symmetrically arranged, the transverse sliding chute 6 is arranged in the middle of one side of each L-shaped fixing plate 1, and the vertical sliding chute 10 is arranged in the middle of one side of each L-shaped fixing plate 1;
the vertical sliding groove 10 is vertically communicated with the transverse sliding groove 6;
a rectangular fixing plate 2 is fixedly welded at one end of the top of the L-shaped fixing plate 1, a first through hole 7 is formed in the middle of one side of the rectangular fixing plate 2, the first through hole 7 penetrates to the other side of the rectangular fixing plate 2, a second through hole 12 is formed in one side of the rectangular fixing plate 2, which is located right below the first through hole 7, the second through hole 12 penetrates to the other side of the rectangular fixing plate 2, a threaded hole 8 is formed in the top end of one side of the cross-shaped sliding block 3, the threaded hole 8 penetrates to the other side of the cross-shaped sliding block 3, the cross-shaped sliding block 3 is correspondingly clamped inside the vertical sliding groove 10 and the transverse sliding groove 6, and the threaded end of the bolt 11 penetrates;
two bolts 11 are arranged;
a plurality of throttling holes 5 are formed in one side of the throttling plate 4, the throttling holes 5 penetrate through the other side of the throttling plate 4, threaded rods 14 are symmetrically mounted at the top ends of two corresponding sides of the throttling plate 4, the threaded rods 14 correspondingly penetrate through first through holes 7 in two ends of the throttling plate 4, and first nuts 9 and second nuts 13 are respectively sleeved on the outer sides of the two ends of the rectangular fixing plate 2, of the threaded rods 14;
wherein, the vertical sliding chute 10 and the horizontal sliding chute 6 have the same depth;
wherein the inner diameter of the first through hole 7 is equal to the outer diameter of the threaded rod 14;
the threaded rods 14 at the two ends of the throttle plate 4 are inserted into the first through holes 7, and the threaded rods 14 are positioned at the outer sides of the two ends of the rectangular fixing plate 2 and are respectively sleeved with the first nuts 9 and the second nuts 13, so that the throttle plate 4 is rotated to a proper angle, and then the first nuts 9 and the second nuts 13 are screwed, so that the first nuts 9 and the second nuts 13 move oppositely to clamp the rectangular fixing plate 2 therebetween, and the threaded rods 14 are fixed, thereby being beneficial to fixing the throttle plate 4, being convenient for adjusting the angle of the throttle plate 4 and being matched with chutes with different slopes for use; the two L-shaped fixing plates 1 are lapped on two ends of the top of the runner, the two ends of the runner are clamped between the L-shaped fixing plates 1 and the cross-shaped slider 3, the bolt 11 is rotated to drive the cross-shaped slider 3 to move, and the bolt 11 is screwed when the cross-shaped slider 3 moves to the outer side of the runner due to the threaded connection of the bolt 11 and the threaded hole 8, so that the L-shaped fixing plates 1 and the cross-shaped slider 3 extrude and fix side plates at the two ends of the runner, and the L-shaped fixing plates 1 are favorably fixedly mounted; in the process, when the aluminum liquid flows to the other end of the flow groove through the throttling hole 5 on the throttling plate 4, and meanwhile, part of the aluminum liquid flows to the other end of the flow groove through a gap between the throttling plate 4 and the flow groove, the flow velocity of the aluminum liquid is favorably reduced, and meanwhile, the flow velocity of the aluminum liquid is convenient to change by adjusting the angle of the throttling plate 4, and the installation and the disassembly of a throttling device are favorably realized;
step S3: when the amount of the aluminum liquid in the main furnace reaches the rated capacity, when any one of the two sub-furnaces is subjected to water, opening the furnace door of any sub-furnace by 15-20 cm, opening the furnace eye of the main furnace by using a furnace eye penetrating tool, and slowly flowing the aluminum liquid to the sub-furnaces through a throttling device on a launder;
step S4: extracting a proper amount of aluminum liquid, pouring the aluminum liquid into a sample mold for preheating, taking a sample before, during, after the transfer, detecting and analyzing the sample, respectively cutting the head by 5cm and the tail by 10cm, taking a low-power test piece from the head and the tail respectively, wherein the thickness of the low-power test piece is 2.5-3 cm, and checking the size and the internal chemical components of the sample through a component detector;
step S5: when the aluminum liquid is transferred to the secondary furnace to reach the rated capacity, monitoring the amount of the aluminum liquid in the secondary furnace through observing observation holes of the secondary furnace, simultaneously observing the amount of the aluminum liquid in the primary furnace, reserving 1/6-1/3 of the aluminum liquid in the primary furnace, and judging according to the submergence degree of an aluminum ingot;
step S6: and after the transfer is finished, blocking a furnace eye of the primary furnace by using an iron plug rod, waiting for aluminum liquid in the runner to be transferred into the secondary furnace, closing a furnace door of the secondary furnace, waiting for the runner to stand for 30min, cleaning the runner, and then retracting the tool for resetting.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A method for transferring molten aluminum for metal casting is characterized by comprising the following steps in sequence;
step S1: checking the cleaning degree of the transfer pouring chute, cleaning sundries in the flow chute, removing caking matters on the inner wall of the flow chute, pouring partial clear water into the flow chute, observing whether the flow chute has a liquid seepage condition, and monitoring the amount of aluminum liquid in the main furnace through an observation hole in a furnace door of the main furnace;
after the clean water is poured into the flow groove to observe the seepage condition of the flow groove, the seepage condition occurs, the seepage gap is filled by welding, the clean water in the flow groove is pumped out by a water pump and discharged out of the flow groove, and the residual clean water in the flow groove is dried by a hot air blower;
wherein, the amount of the aluminum liquid in the main furnace is monitored through any one of an observation hole on the main furnace door or a liquid level detection device;
step S2: placing a temperature measuring rod at a position 35-45 cm away from the inlet of the launder and 45-50 cm deep of the molten aluminum, recording the temperature, and installing a throttling device on the launder when the temperature reaches the transfer temperature and the temperature of the molten aluminum is 720-760 ℃;
the throttling device comprises two L-shaped fixing plates (1), a rectangular fixing plate (2), a cross-shaped sliding block (3), throttle plates (4), throttling holes (5), transverse sliding grooves (6), first through holes (7), threaded holes (8), first nuts (9), vertical sliding grooves (10), bolts (11), second through holes (12), second nuts (13) and threaded rods (14), wherein the two L-shaped fixing plates (1) are symmetrically arranged, the transverse sliding grooves (6) are formed in the middle position of one side of each L-shaped fixing plate (1), and the vertical sliding grooves (10) are formed in the middle position of one side of each L-shaped fixing plate (1);
the vertical sliding chute (10) is vertically communicated with the transverse sliding chute (6);
a rectangular fixing plate (2) is welded and fixed at one end of the top of the L-shaped fixing plate (1), a first through hole (7) is arranged at the middle position of one side of the rectangular fixing plate (2), the first through hole (7) penetrates to the other side of the rectangular fixing plate (2), a second through hole (12) is arranged at the position, right below the first through hole (7), of one side of the rectangular fixing plate (2), the second through hole (12) penetrates to the other side of the rectangular fixed plate (2), a threaded hole (8) is formed in the top end of one side of the cross-shaped sliding block (3), the threaded hole (8) penetrates to the other side of the cross-shaped sliding block (3), the cross-shaped sliding block (3) is correspondingly clamped in the vertical sliding groove (10) and the transverse sliding groove (6), one end of the bolt (11) with threads penetrates through the second through hole (12) to be in threaded connection with the threaded hole (8);
wherein two bolts (11) are provided;
a plurality of throttling holes (5) are formed in one side of the throttling plate (4), the throttling holes (5) penetrate through the other side of the throttling plate (4), threaded rods (14) are symmetrically mounted at the top ends of two corresponding sides of the throttling plate (4), the threaded rods (14) correspondingly penetrate through first through holes (7) in two ends of the throttling plate (4), and first nuts (9) and second nuts (13) are respectively sleeved on the outer sides of two ends of the threaded rods (14) located on the rectangular fixing plate (2);
step S3: when the amount of the aluminum liquid in the main furnace reaches the rated capacity, when any one of the two sub-furnaces is subjected to water, opening the furnace door of any sub-furnace by 15-20 cm, opening the furnace eye of the main furnace by using a furnace eye penetrating tool, and slowly flowing the aluminum liquid to the sub-furnaces through a throttling device on a launder;
step S4: extracting a proper amount of aluminum liquid, pouring the aluminum liquid into a sample mold, preheating, taking a sample before, after and after transfer, detecting and analyzing the sample, respectively cutting the head of the sample by 5cm, cutting the tail by 10cm, respectively taking a low-power test piece from the head and the tail, wherein the thickness is 2.5-3 cm, and checking the size and the internal chemical composition of the sample by a composition detector:
step S5: when the aluminum liquid is transferred to the secondary furnace to reach the rated capacity, monitoring the amount of the aluminum liquid in the secondary furnace through observing observation holes of the secondary furnace, simultaneously observing the amount of the aluminum liquid in the primary furnace, reserving 1/6-1/3 of the aluminum liquid in the primary furnace, and judging according to the submergence degree of an aluminum ingot;
step S6: and after the transfer is finished, blocking a furnace eye of the primary furnace by using an iron plug rod, waiting for aluminum liquid in the runner to be transferred into the secondary furnace, closing a furnace door of the secondary furnace, waiting for the runner to stand for 30min, cleaning the runner, and then retracting the tool for resetting.
2. The molten aluminum re-injection method for metal casting according to claim 1, wherein the vertical runner (10) and the horizontal runner (6) have the same depth.
3. 3-aluminium liquid transfer method for metal casting according to claim 1, characterized in that the inner diameter of the first through hole (7) is equal to the outer diameter of the threaded rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223845.1A CN109097596B (en) | 2018-10-19 | 2018-10-19 | Molten aluminum transfer method for metal casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811223845.1A CN109097596B (en) | 2018-10-19 | 2018-10-19 | Molten aluminum transfer method for metal casting |
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