CN117620129A - Light alloy back-suction liquid transferring device and process thereof - Google Patents
Light alloy back-suction liquid transferring device and process thereof Download PDFInfo
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- CN117620129A CN117620129A CN202311363334.0A CN202311363334A CN117620129A CN 117620129 A CN117620129 A CN 117620129A CN 202311363334 A CN202311363334 A CN 202311363334A CN 117620129 A CN117620129 A CN 117620129A
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- 229910001234 light alloy Inorganic materials 0.000 title claims abstract description 63
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- 238000005266 casting Methods 0.000 claims abstract description 80
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- 238000004512 die casting Methods 0.000 claims abstract description 9
- 238000009749 continuous casting Methods 0.000 claims abstract description 8
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- 238000012546 transfer Methods 0.000 claims description 25
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Abstract
The invention relates to the technical field of light alloy casting, in particular to a light alloy melt back-suction liquid transferring device and a light alloy melt back-suction liquid transferring process used in the light alloy casting process. The liquid transferring bag is used for caching the light alloy molten liquid, is in a static state and is relatively airtight when in work, and forms secondary precipitation purification without gas coiling and slag formation; the heat-preserving pouring furnace quantitatively provides light alloy melt for a casting machine, so that high-quality production of die castings is ensured; the lifting rotating mechanism is used for adjusting and controlling the position of the inverted straw, so that the full liquid-liquid conversion package and the empty liquid-liquid conversion package can be replaced conveniently; the invention greatly shortens the length of the production line, saves energy, protects environment, reduces the production cost of enterprises, improves the automation level and realizes continuous casting operation.
Description
Technical Field
The invention relates to the technical field of light alloy casting, in particular to a light alloy melt back-suction liquid transferring device and a back-suction liquid transferring process used in the light alloy casting process.
Background
In the casting process of light alloy (mainly titanium alloy, magnesium alloy and aluminum alloy), liquid metal is required to be poured into a mold cavity to be made into various castings or casting blanks. The aluminum alloy used in a large amount in the light alloy can be supplied with liquid in a mode of melting aluminum ingots or in a mode of transferring liquid in a liquid transferring bag. The aluminum liquid in the liquid transferring bag is transferred to the pouring furnace by transferring the liquid from the liquid transferring bag to the liquid transferring bag. Meanwhile, another metal, namely magnesium alloy, which is widely applied to light alloys is not developed in the market at present, and most of casting liquid supply is also supplied in the form of direct melting of alloy ingots.
With new requirements of new technologies and processes, the two main light alloy traditional liquid supply modes have the following problems:
aluminum alloy casting field: in particular to the field of large-scale automobile structural member production such as an integrated frame, which is the field of single-piece large-scale aluminum alloy liquid requirement, the weight of a single-piece casting is 200-300 kg, about 20 castings are produced per hour, the weight of the required aluminum liquid per hour is about 4-6 tons, a large-scale aluminum alloy melting furnace needs to be configured, and how to stably supply liquid to a pouring furnace with high quality becomes a challenging task. Meanwhile, the aluminum alloy melt can be caused to seriously absorb hydrogen and oxidize and slag formation in the process of pouring the liquid transferring ladle, so that hydrogen is separated out in the production process of the casting to generate hydrogen embrittlement, and the inside of the casting is provided with oxidizing slag inclusion, so that the mechanical properties such as strength, toughness and the like of the casting are seriously influenced. In addition, the adoption of the liquid turning ladle for pouring the liquid can cause the fluctuation of the liquid level of the quantitative pouring furnace to be too large, so that the quantitative accuracy has larger problems, and how to solve the problems is an urgent problem to be solved in the casting of large-scale integrated aluminum alloy.
Magnesium alloy casting field: because no mature magnesium alloy liquid transferring technology exists, the vast majority of the field still adopts molten magnesium alloy ingots for casting at present, and the following problems exist:
(1) The alloy workshop needs to cast alloy liquid into alloy ingots, and a large amount of equipment, production sites, manpower and energy sources are required to be input in the process;
(2) The alloy ingot is melted into alloy liquid in a machine side melting furnace, a great amount of energy is further consumed, the casting process is mainly the second most cost in the whole casting cost except the material cost, the annual energy consumption cost of the alloy ingot basically occupies the purchase cost of a machine side melting casting furnace, how to save a great amount of energy is a key factor of industry development, and in the alloy ingot melting process, more than 1.5% of material burning loss is generated in an approximate date, the burning loss cost is equivalent to the energy cost, and even the energy consumption cost is exceeded when the control is bad;
(3) In the process of melting alloy ingots into alloy liquid, equipment occupies larger space due to melting requirement, and manual feeding is required to be consumed, so that larger field and labor cost are brought to enterprises;
(4) In the field of large-scale magnesium alloy casting production, a plurality of large-scale magnesium alloy melting furnaces are required to be configured in the traditional mode of providing alloy liquid by melting alloy ingots, so that a large amount of equipment purchase cost is required to be input, labor and energy are greatly consumed, the production capacity requirement of larger castings cannot be met, and the development and application processes of integrated large-scale magnesium alloy castings are seriously influenced.
Aiming at the problems, a novel light alloy melt liquid supply technology and equipment which are energy-saving, environment-friendly, high in automation level, low in labor cost, small in occupied area and short in production line flow, meet the production of large castings and meet the requirements on large liquid supply amount and high quality of light alloy melt are developed, and are urgent requirements for solving the general problems faced by the current industry.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the invention provides a light alloy back-suction liquid transferring device and a process thereof, which greatly shorten the length of a production line, save energy in a large range, protect environment, reduce labor, reduce production sites and cost and promote automation level.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the light alloy back-suction liquid transferring device comprises a liquid transferring bag and a heat preservation pouring furnace, wherein a back-suction pipe is communicated between the liquid transferring bag and the heat preservation pouring furnace, and a lifting and rotating mechanism is arranged at the lower end of the back-suction pipe. The liquid transferring bag is used for caching the light alloy molten liquid, is in a static state and is relatively airtight when in work, and forms secondary precipitation purification without gas coiling and slag formation; the heat-preserving pouring furnace quantitatively provides light alloy melt for a casting machine, so that high-quality production of castings is ensured; the lifting rotating mechanism is used for adjusting and controlling the position of the inverted straw, so that the full liquid-liquid transfer bag and the empty liquid transfer bag can be replaced conveniently.
The liquid transferring package is composed of a liquid transferring package furnace body, a liquid transferring package crucible arranged in the liquid transferring package furnace body and a liquid transferring package furnace cover arranged at the upper end of the liquid transferring package crucible, and a laser range finder is arranged on the liquid transferring package furnace cover. An insulating layer is arranged in the liquid transferring ladle furnace body and used for insulating the liquid transferring ladle crucible; and the laser distance measuring instrument measures the liquid level height of the molten liquid in the liquid transferring ladle crucible through a measuring window on the liquid transferring ladle furnace cover.
The heat preservation pouring furnace comprises a pouring furnace body, a pouring furnace crucible arranged in the pouring furnace body and a pouring furnace cover arranged at the upper end of the pouring furnace crucible, wherein a reverse suction pump, a pouring furnace laser liquid level range finder, an upper liquid level probe, a working liquid level probe, a lower liquid level probe, a pouring pump and a pouring pipe are respectively arranged on the pouring furnace cover, the reverse suction pump is communicated with the reverse suction pipe in a sealing manner, an outlet of the pouring pump is communicated with the pouring pipe in a sealing manner, a pouring nozzle is communicated with the pouring pipe, the pouring nozzle is communicated with a die of a casting machine, and light alloy melt fully precipitated in a liquid transferring bag is transferred into the heat preservation pouring furnace and is further conveyed into a die cavity of a casting machine through the pouring nozzle to complete casting molding.
Preferably, the lifting rotating mechanism comprises a frame component, a guide component, an upper mounting plate, a connecting flange, a straw pouring lifting cylinder and a straw pouring rotating cylinder, wherein the straw pouring lifting cylinder is arranged in the middle of the frame component, the guide component is arranged on two sides of the straw pouring lifting cylinder, the upper mounting plate is arranged on a piston rod end of the straw pouring lifting cylinder, the connecting flange is rotationally connected with one end of the upper mounting plate, the straw pouring rotating cylinder is arranged at the other end of the upper mounting plate, the output end of the straw pouring rotating cylinder is hinged to one side of the connecting flange, and the straw pouring is connected with the lifting rotating mechanism through the connecting flange. The lifting rotating mechanism stably drives the inverted straw to ascend and descend, and the inverted straw lifting oil cylinder is used as a rotation center to rotate, so that the liquid filling bag and the empty liquid bag can be replaced conveniently.
Further, the flange is two semicircle cylinder flanges, fall the straw with lifting rotation mechanism passes through two semicircle cylinder flange bolted connection, and the installation is dismantled more conveniently.
Further, the reverse suction pump is a centrifugal pump, a U-shaped liquid inlet pipe is led out from the central position of the bottom of the reverse suction pump, a liquid outlet is arranged at the circumference of the shell of the reverse suction pump, the liquid inlet of the U-shaped liquid inlet pipe of the reverse suction pump is of a ball head structure, the liquid outlet of the reverse suction pipe is of a horn structure, and the reverse suction pump is connected with the reverse suction pipe in a horn conical surface spherical sealing manner.
Further, the inverted straw consists of an inner pipe, an outer pipe, a heating device and an insulating layer, the inverted straw is of an inverted U-shaped structure, a vertical section of the inverted straw in the liquid transferring bag is inserted into the liquid transferring bag crucible and is 200-400 mm away from the bottom of the liquid transferring bag crucible, and a middle pipeline of the inverted straw forms an angle of 0-45 degrees with a horizontal plane.
Further, the distance between the lower end face of the upper liquid level probe and the lower end face of the casting furnace cover is 10-50 mm, the distance between the lower end face of the working liquid level probe and the lower end face of the casting furnace cover is 55-100 mm, the distance between the lower end face of the lower liquid level probe and the lower end face of the casting furnace cover is 100-150 mm, the distance value can be set according to the diameter of the heat preservation casting furnace and the volume of a casting piece, and the purpose of the continuous casting device is to accurately control the liquid level height of light alloy melt in a casting furnace crucible and realize continuous casting operation.
Further, the pouring pipe and the pouring pipe are provided with the heating device, so that the light alloy melt can be prevented from solidifying during conveying, and the fluidity can be better guaranteed.
The invention also provides a light alloy back-suction liquid transferring process, which is completed by adopting the light alloy back-suction liquid transferring device, and comprises the following steps:
s1, an inverted straw lifting oil cylinder of the lifting rotating mechanism ascends to drive an inverted straw to the highest position, the inverted straw rotating oil cylinder acts to drive the inverted straw to rotate by a preset angle by taking the inverted straw lifting oil cylinder as a rotation center, a liquid transferring bag filled with liquid is moved to a feeding station (the station is provided with a positioning device to ensure the position of the liquid transferring bag is unique), then the inverted straw lifting oil cylinder descends until a liquid outlet bell mouth of the inverted straw is tightly matched and connected with a liquid inlet ball head of the inverted straw pump, and the ball head and the bell mouth are automatically aligned and sealed under the action of the pressing force of the inverted straw lifting oil cylinder;
s2, when the liquid level in the casting furnace crucible is higher than the trigger liquid level height of the lower liquid level probe and lower than the liquid level height of the working liquid level probe, the control system starts a reverse suction pump, and the reverse suction pump sucks the light alloy melt in the liquid transfer ladle crucible into the casting furnace crucible to promote the liquid level in the casting furnace crucible to rise until the working liquid level probe triggers to obtain electricity;
s3, after the working liquid level probe is triggered electrically, the reverse suction pump stops working, and the high-temperature light alloy melt in the reverse suction pipe flows back into the crucible of the liquid transfer ladle under the pressure effect caused by the liquid level difference in the liquid transfer ladle and the heat preservation pouring furnace;
s4, along with the casting, the pouring pump quantitatively presses the light alloy melt in the crucible of the pouring furnace into the die cavity of the die casting machine through the pouring pipe and the pouring nozzle, the light alloy melt in the crucible of the pouring furnace is continuously reduced until the working liquid level probe is out of contact with the light alloy melt, and the power is lost;
s5, restarting the reverse suction pump, sucking the high-temperature light alloy melt in the liquid transferring bag into the casting furnace crucible through the reverse suction pump, and promoting the liquid level in the casting furnace crucible to rise until the working liquid level probe is contacted with the light alloy melt again, and obtaining electricity, wherein the reverse suction pump stops working;
s6, continuously and circularly repeating the steps S4 and S5 until the laser range finder arranged on the cover of the liquid transferring bag measures that the liquid level in the liquid transferring bag reaches the set low liquid level, and stopping the operation of the back suction pump; at this time, after the inverted straw lifting cylinder moves upwards to drive the inverted straw to the highest position, the inverted straw rotating cylinder acts to drive the inverted straw to rotate to a preset angle, the empty liquid transfer liquid package is removed, the full liquid transfer liquid package is transferred to the feeding station, the inverted straw rotating cylinder resets, the inverted straw lifting cylinder moves downwards, and the continuous casting operation is completed by repeating the processes S1-S5.
Further, in S1 and S6, the preset angle is 5 to 90 degrees, so as to facilitate replacement of the full-liquid-to-liquid package and the empty-liquid-to-liquid package.
Furthermore, in order to reduce the influence of air in the inverted straw on the light alloy melt, protective gas can be introduced into the inverted straw after the inverted straw is discharged every time.
The beneficial effects of the invention are as follows: (1) The reverse suction pump and the airtight reverse suction pipe are adopted, so that the whole liquid transferring process is carried out in sealing liquid, the large-scale hydrogen absorption and oxidation slagging in the aluminum alloy tilting liquid transferring process are eliminated, the defects of hydrogen embrittlement, slag inclusion and the like are prevented, and the mechanical performance index of an aluminum alloy casting is improved; (2) In the application field of magnesium alloy, the liquid transferring is carried out by adopting the relatively sealed liquid transferring bag, so that the application of the liquid transferring bag is realized, thereby reducing unnecessary technological processes of alloy ingot casting, melting and the like consuming a large amount of energy sources, greatly shortening the whole casting technological process, and reducing equipment investment, manual investment, energy source investment, site investment and the like; meanwhile, the material burning loss and the process defects generated by unnecessary process flow are reduced; (3) In the liquid transferring process, the liquid transferring bag is in a static and relatively airtight state, gas rolling and slag formation are avoided, the light alloy is intensively smelted in the large-scale smelting furnace to finish primary purification, the light alloy melt is again static and secondarily precipitated and purified in the liquid transferring bag, and the light alloy melt at the upper half layer is always extracted, so that the slag is prevented from being stirred and brought into the casting, and the quality of the casting is effectively improved; (4) The laser range finder and the liquid level probe are adopted for monitoring the liquid level, and the PLC control system receives the information for controlling the liquid level height in real time, so that the start and stop of the reverse suction pump and the pouring pump are accurately controlled, and the quantitative pouring precision is ensured; (5) Aiming at the current situation that the liquid supply amount of the traditional process cannot meet the requirement in the existing large-scale casting production, the invention can timely provide a large quantity of light alloy melt with excellent product quality for the large-scale casting production, and provides a new melt supply process and equipment solution for the large-scale integrated casting production.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
In the figure, 100, a liquid transferring ladle, 101, a liquid transferring ladle furnace body, 102, a liquid transferring ladle crucible, 103, a liquid transferring ladle furnace cover, 200, a heat preservation pouring furnace, 201, a pouring furnace body, 202, a pouring furnace crucible, 203, a pouring furnace cover, 300, a pouring straw, 400, a lifting rotating mechanism, 401, a rack assembly, 402, a guiding assembly, 403, an upper mounting plate, 404, a connecting flange, 405, a pouring straw lifting oil cylinder, 406, a pouring straw rotating oil cylinder, 500, a laser distance meter, 600, a pouring pump, 700, a pouring furnace laser liquid level distance meter, 800, an upper liquid level probe, 900, a working liquid level probe, 1000, a lower liquid level probe, 1100, a pouring pump, 1200, a pouring pipe, 1300 and a pouring nozzle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a light alloy back-suction liquid transferring device comprises a liquid transferring bag 100 and a heat preservation pouring furnace 200, wherein a back-suction pipe 300 is communicated between the liquid transferring bag 100 and the heat preservation pouring furnace 200, and a lifting and rotating mechanism 400 is arranged at the lower end of the back-suction pipe 300. The liquid transferring bag 100 is used for buffering light alloy molten liquid, and is in a static and relatively airtight state during working, so that secondary precipitation purification is formed, gas is not rolled, and slag formation is not caused; the heat preservation pouring furnace 200 quantitatively provides light alloy melt for the die casting machine, so that high-quality production of die castings is ensured; the lifting and rotating mechanism 400 is used for adjusting and controlling the position of the inverted straw 300, so that the liquid transfer ladle 100 filled with liquid and the liquid transfer ladle 100 empty liquid can be replaced conveniently, and multi-machine continuous casting is ensured.
The liquid transferring ladle 100 consists of a liquid transferring ladle furnace body 101, a liquid transferring ladle crucible 102 arranged in the liquid transferring ladle furnace body 101 and a liquid transferring ladle furnace cover 103 arranged at the upper end of the liquid transferring ladle crucible 102, wherein a laser range finder 500 is arranged on the liquid transferring ladle furnace cover 103. An insulating layer is arranged in the liquid transferring ladle furnace body 101 and used for insulating the liquid transferring ladle crucible 102; the laser distance meter 500 measures and monitors the liquid level of the melt in the ladle crucible 102 through a measuring window on the ladle furnace cover 103.
The heat preservation pouring furnace 200 comprises a pouring furnace body 201, a pouring furnace crucible 202 arranged in the pouring furnace body 201 and a pouring furnace cover 203 arranged at the upper end of the pouring furnace crucible 202, wherein a pouring pump 600, a pouring furnace laser liquid level range finder 700, an upper liquid level probe 800, a working liquid level probe 900, a lower liquid level probe 1000, a pouring pump 1100 and a pouring pipe 1200 are respectively arranged on the pouring furnace cover 203, the pouring pump 600 is communicated with the pouring pipe 300 in a sealing way, an outlet of the pouring pump 1100 is communicated with the pouring pipe 1200 in a sealing way, a pouring nozzle 1300 is communicated with a die of a casting machine, and light alloy melt fully precipitated in the liquid transferring bag 100 is transferred into the heat preservation pouring furnace 200 and is further conveyed into a die cavity of the casting machine through the pouring nozzle 1300 to complete casting molding.
The lifting rotating mechanism 400 comprises a frame assembly 401, a guide assembly 402, an upper mounting plate 403, a connecting flange 404, a reverse suction pipe lifting cylinder 405 and a reverse suction pipe rotating cylinder 406, wherein the reverse suction pipe lifting cylinder 405 is arranged in the middle of the frame assembly 401, the guide assembly 402 is arranged on two sides of the reverse suction pipe lifting cylinder 405, the upper mounting plate 403 is arranged on a piston rod end of the reverse suction pipe lifting cylinder 405, the connecting flange 404 is rotatably connected with one end of the upper mounting plate 403, the reverse suction pipe rotating cylinder 406 is arranged at the other end of the upper mounting plate 403, the output end of the reverse suction pipe rotating cylinder 406 is hinged to one side of the connecting flange 404, and the reverse suction pipe 300 is connected to the lifting rotating mechanism 400 through the connecting flange 404. The lifting and rotating mechanism 400 stably drives the inverted straw 300 to lift and descend, and rotates by taking the inverted straw lifting oil cylinder 406 as a rotation center, so that the replacement of the full liquid-to-liquid package and the empty liquid-to-liquid package is facilitated. The connecting flange 404 is two semicircular cylinder flanges, the inverted straw 300 is connected with the lifting rotary mechanism 400 through two semicircular cylinder flange bolts, and the installation and the disassembly are more convenient.
The reverse suction pump 600 is a centrifugal pump, a U-shaped liquid inlet pipe 601 is led out from the central position of the bottom of the reverse suction pump 600, a liquid outlet 602 is arranged at the circumference of the shell of the reverse suction pump 600, the liquid inlet of the U-shaped liquid inlet pipe of the reverse suction pump 600 is of a ball head structure, the liquid outlet of the reverse suction pipe 300 is of a horn structure, and the reverse suction pump 600 is connected with the reverse suction pipe 300 in a horn conical surface spherical sealing manner.
The inverted straw 300 is composed of an inner pipe, an outer pipe, a heating device and an insulating layer, and has an inverted U-shaped structure, wherein the vertical section of the inverted straw 300 in the liquid transferring bag 100 is inserted into the liquid transferring bag crucible 102 and is 200-400 mm away from the bottom of the liquid transferring bag crucible 102, and the middle pipeline of the inverted straw 300 is parallel to the horizontal plane.
The distance between the lower end face of the upper liquid level probe 800 and the lower end face of the casting furnace cover 203 is 10-50 mm, the distance between the lower end face of the working liquid level probe 900 and the lower end face of the casting furnace cover 203 is 55-100 mm, and the distance between the lower end face of the lower liquid level probe 1000 and the lower end face of the casting furnace cover 203 is 100-150 mm.
The invention also provides a light alloy back-suction liquid transferring process, which is described in detail by taking a magnesium alloy liquid transferring process as an embodiment, and comprises the following steps:
s1, fully melting a magnesium alloy ingot with selected components in a large melting furnace, and transferring 670-750 ℃ molten magnesium alloy melt into a liquid transferring ladle 100; meanwhile, a driving button of the lifting and rotating mechanism 400 is started, after the inverted straw lifting oil cylinder 405 ascends to lift the inverted straw 300 to the highest position, the inverted straw rotating oil cylinder 406 acts to rotate the inverted straw 300 by a preset angle of 90 degrees, then the liquid transferring bag 100 filled with molten liquid is transferred to a feeding station where the heat preservation pouring furnace 200 is located, then the inverted straw rotating oil cylinder 406 resets, the inverted straw lifting oil cylinder 405 descends until a liquid outlet horn of the inverted straw 300 is tightly matched and connected with a liquid inlet ball head of the inverted straw pump 600, and liquid transferring is waited;
s2, starting a PLC control system, when the liquid level in the casting furnace crucible 202 is higher than the trigger liquid level of the lower liquid level probe 1000 and lower than the liquid level of the working liquid level probe 900, the control system sends a command to start the reverse suction pump 600, and an impeller in the reverse suction pump 600 sucks the magnesium alloy melt in the liquid transfer ladle crucible 102 into the casting furnace crucible 202 under the action of centrifugal force, so that the liquid level of the magnesium alloy melt in the casting furnace crucible 202 is promoted to rise until the working liquid level probe 900 triggers to obtain electricity;
s3, after the working liquid level probe 900 is triggered electrically, the reverse suction pump 600 stops working, and the high-temperature magnesium alloy melt in the reverse suction pipe 300 flows back into the liquid transfer ladle crucible 102 under the pressure caused by the liquid level difference between the liquid transfer ladle 100 and the heat preservation pouring furnace 200 (at the moment, the liquid level of the liquid transfer ladle crucible 102 is lower than the liquid level of the pouring furnace crucible 202);
s4, along with the casting, the control system sends out an instruction to start the casting pump 1100, simultaneously starts the die casting machine, starts the protective gas leading to the die cavity of the die casting machine, preheats the die to 200-250 ℃, enables the magnesium alloy melt to enter the casting nozzle 1300 through the inner pipe channel of the casting pipe 1200, quantitatively presses into the die cavity of the die casting machine, ensures the injection pressure to be 0.2-1 MPa, and circularly performs casting molding after pressure maintaining for 2-10 min, cooling and opening until the liquid level in the casting furnace crucible 202 reaches the lowest casting liquid level, and the PLC sends out an instruction to stop the casting pump 1100, enables the working liquid level probe 900 to be separated from contact with the magnesium alloy melt and loses power;
s5, restarting the reverse suction pump 600, sucking the high-temperature light alloy melt in the liquid transferring ladle 100 into the casting furnace crucible 202 through the reverse suction pump 600, and promoting the liquid level in the casting furnace crucible 202 to rise until the working liquid level probe 900 contacts the magnesium alloy melt again, and obtaining electricity, wherein the reverse suction pump 600 stops working;
s6, continuously and circularly repeating the steps S4 and S5 until the laser range finder 500 arranged on the liquid transfer ladle furnace cover 103 measures that the liquid level in the liquid transfer ladle crucible 102 reaches the set low liquid level, and stopping the operation of the reverse suction pump; at this time, after the inverted straw lifting cylinder 405 moves up to drive the inverted straw 300 to the highest position, the inverted straw rotating cylinder 406 moves to drive the inverted straw 300 to rotate 90 °, so as to facilitate the removal of the empty transfer ladle 100, and the transfer ladle 100 filled with liquid is moved into the feeding station, the inverted straw rotating cylinder resets, the inverted straw lifting cylinder moves down, and the above processes S1 to S5 are repeated, thereby completing the continuous casting operation.
The invention sets the liquid transferring ladle 100 and the crucible of the heat preservation pouring furnace 200 in the heat preservation shell sealed by the sealing cover, and sets the reverse suction pipe socket on the liquid transferring ladle cover 103 and the pouring furnace cover 203, the socket can also set the automatic opening and closing door, which is convenient for the automatic sealing when the reverse suction pipe 300 is out, and under the dual monitoring of the laser range finder 500, the pouring furnace laser liquid level range finder 700, the upper liquid level probe 800, the working liquid level probe 900 and the lower liquid level probe 1000, the PLC control system receives the liquid level height information in real time, controls the start and stop of the reverse suction pump 600 and the pouring pump 1100, thereby ensuring the accuracy of the quantitative pouring of the heat preservation pouring furnace 200. The transfer ladle 100 is in a static and relatively airtight state in the transfer process of the inverted straw 300, gas is not rolled up and slag is not formed, the large-scale smelting furnace intensively smelts the light alloy to finish primary purification, the magnesium alloy melt is subjected to secondary static and secondary precipitation purification in the transfer ladle 100, the large-scale smelting furnace continuously supplies liquid to one or more transfer ladle 100, the large-scale requirement of large-scale light alloy integrated continuous casting on high-quality light alloy melt in batches can be met, the movable inverted straw 300 and the lifting and rotating mechanism 400 are matched, the transfer ladle 100 conveniently supplies liquid to a plurality of pouring furnaces to realize multi-machine continuous injection, the direct insertion of the pouring pipe 1200 into the smelting furnace is avoided, the slag at the bottom of a pot is stirred, and the casting is brought into the casting, and the die casting quality is improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The light alloy back-suction liquid transferring device is characterized by comprising a liquid transferring bag and a heat preservation pouring furnace, wherein a back-suction pipe is communicated between the liquid transferring bag and the heat preservation pouring furnace, and a lifting and rotating mechanism is arranged at the lower end of the back-suction pipe;
the liquid transferring bag consists of a liquid transferring bag furnace body, a liquid transferring bag crucible arranged in the liquid transferring bag furnace body and a liquid transferring bag furnace cover arranged at the upper end of the liquid transferring bag crucible, and a laser range finder is arranged on the liquid transferring bag furnace cover;
the heat preservation pouring furnace comprises a pouring furnace body, a pouring furnace crucible arranged in the pouring furnace body and a pouring furnace cover arranged at the upper end of the pouring furnace crucible, wherein a reverse suction pump, a pouring furnace laser liquid level range finder, an upper liquid level probe, a working liquid level probe, a lower liquid level probe, a pouring pump and a pouring pipe are respectively arranged on the pouring furnace cover, the reverse suction pump is in sealed communication with the reverse suction pipe, an outlet of the pouring pump is in sealed communication with the pouring pipe, and a pouring nozzle is communicated with the pouring pipe.
2. The light alloy back-suction liquid transferring device according to claim 1, wherein the lifting rotating mechanism comprises a frame component, a guiding component, an upper mounting plate, a connecting flange, a back-suction pipe lifting cylinder and a back-suction pipe rotating cylinder, the back-suction pipe lifting cylinder is arranged in the middle of the frame component, the guiding component is arranged on two sides of the back-suction pipe lifting cylinder, the upper mounting plate is arranged on a piston rod end of the back-suction pipe lifting cylinder, the connecting flange is rotatably connected with one end of the upper mounting plate, the back-suction pipe rotating cylinder is arranged on the other end of the upper mounting plate, and an output end of the back-suction pipe rotating cylinder is hinged to the connecting flange, and the back-suction pipe is connected with the lifting rotating mechanism through the connecting flange.
3. The light alloy back-suction liquid transferring device of claim 1, wherein the back-suction pump is a centrifugal pump, a U-shaped liquid inlet pipe is led out from the central position of the bottom of the back-suction pump, a liquid outlet is arranged at the circumference of the shell of the back-suction pump, the liquid inlet of the U-shaped liquid inlet pipe of the back-suction pump is of a ball head structure, the liquid outlet of the back-suction pipe is of a bell mouth structure, and the back-suction pump and the back-suction pipe are connected in a bell mouth conical surface spherical sealing mode.
4. The light alloy back-suction liquid transferring device according to claim 1, wherein the back-suction pipe consists of an inner pipe, an outer pipe, a heating device and a heat preservation layer, the structure is of a back-U-shaped structure, a vertical section of the back-suction pipe in the liquid transferring bag is inserted into the liquid transferring bag crucible and is 200-400 mm away from the bottom of the liquid transferring bag crucible, and a middle pipeline of the back-suction pipe forms an angle of 0-45 degrees with a horizontal plane.
5. The light alloy back-suction liquid transferring device according to claim 1, wherein the distance between the lower end face of the upper liquid level probe and the lower end face of the casting furnace cover is 10-50 mm, the distance between the lower end face of the working liquid level probe and the lower end face of the casting furnace cover is 55-100 mm, and the distance between the lower end face of the lower liquid level probe and the lower end face of the casting furnace cover is 100-150 mm.
6. The light alloy back-suction liquid transferring device as set forth in claim 1, wherein said pouring tube is also provided with a heating device.
7. A light alloy back-suction liquid transferring process, characterized in that the light alloy back-suction liquid transferring device of any one of claims 1 to 6 is adopted, comprising the following steps:
s1, an inverted straw lifting oil cylinder of the lifting rotating mechanism ascends to drive an inverted straw to the highest position, the inverted straw rotating oil cylinder acts to drive the inverted straw to rotate by a preset angle by taking the inverted straw lifting oil cylinder as a rotation center, a liquid turning bag filled with liquid is moved to a feeding station at the moment, then the inverted straw lifting oil cylinder descends until a liquid outlet bell mouth of the inverted straw is tightly matched and connected with a liquid inlet ball head of an inverted straw pump, and the ball head and the bell mouth are automatically aligned and sealed under the action of the pressing force of the inverted straw lifting oil cylinder;
s2, when the liquid level in the casting furnace crucible is higher than the trigger liquid level height of the lower liquid level probe and lower than the liquid level height of the working liquid level probe, the control system starts a reverse suction pump, and the reverse suction pump sucks the light alloy melt in the liquid transfer ladle crucible into the casting furnace crucible to promote the liquid level in the casting furnace crucible to rise until the working liquid level probe triggers to obtain electricity;
s3, after the working liquid level probe is triggered electrically, the reverse suction pump stops working, and the high-temperature light alloy melt in the reverse suction pipe flows back into the crucible of the liquid transfer ladle under the pressure effect caused by the liquid level difference in the liquid transfer ladle and the heat preservation pouring furnace;
s4, along with the casting, the pouring pump quantitatively presses the light alloy melt in the crucible of the pouring furnace into the die cavity of the die casting machine through the pouring pipe and the pouring nozzle, the light alloy melt in the crucible of the pouring furnace is continuously reduced until the working liquid level probe is out of contact with the light alloy melt, and the power is lost;
s5, restarting the reverse suction pump, sucking the high-temperature light alloy melt in the liquid transferring bag into the casting furnace crucible through the reverse suction pump, and promoting the liquid level in the casting furnace crucible to rise until the working liquid level probe is contacted with the light alloy melt again, and obtaining electricity, wherein the reverse suction pump stops working;
s6, continuously and circularly repeating the steps S4 and S5 until the laser range finder arranged on the cover of the liquid transferring bag measures that the liquid level in the liquid transferring bag reaches the set low liquid level, and stopping the operation of the back suction pump; at this time, after the inverted straw lifting cylinder ascends to drive the inverted straw to the highest position, the inverted straw rotating cylinder acts to drive the inverted straw to rotate to a preset angle, the empty liquid-to-liquid package is removed, the full liquid-to-liquid package is moved into the feeding station, the inverted straw lifting cylinder descends, and the continuous casting operation is completed by repeating the processes S1-S5.
8. The light alloy reverse suction liquid transferring process according to claim 7, wherein in S1 and S6, the preset angle is 5-90 °.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142887A (en) * | 1991-05-24 | 1994-05-24 | Ats Beteiligungs Gmbh | Method and equipment for casting magnesium-made light metal article |
| CN1157763A (en) * | 1995-09-08 | 1997-08-27 | 挪威海德罗公司 | Apparatus and method for horizontal direct chill casting of light metals |
| CN1851369A (en) * | 2006-05-19 | 2006-10-25 | 清华大学 | Over-flow type maguesium alloy melt quantitative transfering apparatus |
| CN2912866Y (en) * | 2006-05-22 | 2007-06-20 | 南京云海特种金属股份有限公司 | Magnesium alloy siphon electrical heating transfusion apparatus |
| CN101797637A (en) * | 2010-04-20 | 2010-08-11 | 上海交通大学 | Duplex type magnesium alloy continuous casting device |
| CN102632226A (en) * | 2012-03-28 | 2012-08-15 | 攀枝花市立宇矿业有限公司 | Ingot casting method, equipment, accessory and refining and ingot casting integrated production process |
| CN102935500A (en) * | 2012-11-09 | 2013-02-20 | 南京云海轻金属精密制造有限公司 | Heat-preserving furnace for magnesium alloy die casting |
| CN205888051U (en) * | 2016-06-15 | 2017-01-18 | 上海盛铸智能科技有限公司 | Metal melt repeats from switching on siphon system |
| CN106335866A (en) * | 2015-07-10 | 2017-01-18 | 宁波创润新材料有限公司 | Device used for transferring liquid from inside of sealed container |
| CN206160743U (en) * | 2016-10-31 | 2017-05-10 | 东莞市宏幸工业炉制造有限公司 | Magnesium alloy double -furnace |
| CN107052281A (en) * | 2017-01-12 | 2017-08-18 | 福建坤孚股份有限公司 | A kind of magnesium liquid casting holding furnace |
| CN107914002A (en) * | 2017-11-27 | 2018-04-17 | 山西八达镁业有限公司 | A kind of equipment that refining slag is removed during magnesium alloy smelting |
| CN108526442A (en) * | 2018-07-13 | 2018-09-14 | 河南瑞科智能科技有限公司 | Magnesium alloy founding turns liquid with the method for preventing melt from flowing back and turns liquid device |
| CN115958179A (en) * | 2022-12-27 | 2023-04-14 | 巢湖云海轻金属精密制造有限公司 | Magnesium liquid balance system |
| CN115971462A (en) * | 2022-12-27 | 2023-04-18 | 巢湖云海轻金属精密制造有限公司 | Magnesium water transfer system |
-
2023
- 2023-10-18 CN CN202311363334.0A patent/CN117620129A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06142887A (en) * | 1991-05-24 | 1994-05-24 | Ats Beteiligungs Gmbh | Method and equipment for casting magnesium-made light metal article |
| CN1157763A (en) * | 1995-09-08 | 1997-08-27 | 挪威海德罗公司 | Apparatus and method for horizontal direct chill casting of light metals |
| CN1851369A (en) * | 2006-05-19 | 2006-10-25 | 清华大学 | Over-flow type maguesium alloy melt quantitative transfering apparatus |
| CN2912866Y (en) * | 2006-05-22 | 2007-06-20 | 南京云海特种金属股份有限公司 | Magnesium alloy siphon electrical heating transfusion apparatus |
| CN101797637A (en) * | 2010-04-20 | 2010-08-11 | 上海交通大学 | Duplex type magnesium alloy continuous casting device |
| CN102632226A (en) * | 2012-03-28 | 2012-08-15 | 攀枝花市立宇矿业有限公司 | Ingot casting method, equipment, accessory and refining and ingot casting integrated production process |
| CN102935500A (en) * | 2012-11-09 | 2013-02-20 | 南京云海轻金属精密制造有限公司 | Heat-preserving furnace for magnesium alloy die casting |
| CN106335866A (en) * | 2015-07-10 | 2017-01-18 | 宁波创润新材料有限公司 | Device used for transferring liquid from inside of sealed container |
| CN205888051U (en) * | 2016-06-15 | 2017-01-18 | 上海盛铸智能科技有限公司 | Metal melt repeats from switching on siphon system |
| CN206160743U (en) * | 2016-10-31 | 2017-05-10 | 东莞市宏幸工业炉制造有限公司 | Magnesium alloy double -furnace |
| CN107052281A (en) * | 2017-01-12 | 2017-08-18 | 福建坤孚股份有限公司 | A kind of magnesium liquid casting holding furnace |
| CN107914002A (en) * | 2017-11-27 | 2018-04-17 | 山西八达镁业有限公司 | A kind of equipment that refining slag is removed during magnesium alloy smelting |
| CN108526442A (en) * | 2018-07-13 | 2018-09-14 | 河南瑞科智能科技有限公司 | Magnesium alloy founding turns liquid with the method for preventing melt from flowing back and turns liquid device |
| CN115958179A (en) * | 2022-12-27 | 2023-04-14 | 巢湖云海轻金属精密制造有限公司 | Magnesium liquid balance system |
| CN115971462A (en) * | 2022-12-27 | 2023-04-18 | 巢湖云海轻金属精密制造有限公司 | Magnesium water transfer system |
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