CN115875977A - Hypereutectic silicon-aluminum alloy production device and modification process thereof - Google Patents
Hypereutectic silicon-aluminum alloy production device and modification process thereof Download PDFInfo
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- CN115875977A CN115875977A CN202211302464.9A CN202211302464A CN115875977A CN 115875977 A CN115875977 A CN 115875977A CN 202211302464 A CN202211302464 A CN 202211302464A CN 115875977 A CN115875977 A CN 115875977A
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Abstract
The invention discloses a hypereutectic silicon-aluminum alloy production device which comprises a base, wherein a plurality of support frames which are symmetrically arranged are fixedly connected to the upper end surface of the base, the support frames are arranged in a mutually-separated manner, one ends of the support frames, far away from the base, are jointly and fixedly connected with a working kettle, a working cavity is formed in the inner wall of the working kettle, a heat-conducting plate is fixedly connected to the inner wall of the working cavity, heat-conducting liquid is arranged in the working cavity, a heater is fixedly connected to the outer wall of the working kettle, the output end of the heater penetrates through the working kettle, lifting grooves are formed in the two inner walls of the heat-conducting plate, lifting blocks are connected to the two lifting grooves in a sliding manner, and a fixing shaft is fixedly connected between the two lifting blocks. According to the invention, a user can complete slagging-off and blanking with high quality, the production quality of products is guaranteed, and meanwhile, excellent hypereutectic silicon-aluminum alloy can be produced and processed for piston production and processing.
Description
Technical Field
The invention relates to the technical field of aluminum alloy bar manufacturing, in particular to a hypereutectic silicon-aluminum alloy production device and a modification process thereof.
Background
All trades develop towards lightweight direction, and the piston material has been developed to hypo eutectic silicon aluminum alloy piston and eutectic silicon aluminum alloy piston from traditional cast iron piston, has realized the lightweight effect. The hypereutectic silicon-aluminum alloy is superior to the eutectic silicon-aluminum alloy in high temperature resistance and friction resistance coefficient, but the problem that the size of coarse crystal silicon is higher than 100 mu m cannot be solved in the production and preparation process, and the hypereutectic silicon-aluminum alloy cannot be popularized.
In-process at carrying out hypereutectic silicon aluminum alloy production work, need use the work kettle to carry out a large amount of melting mixed processing work, need carry out a large amount of slagging-off processing work at this in-process, the unable abundant different positions slag with in the work kettle of current slagging-off device is taken off, the in-process that carries out the fuse-element and shift simultaneously, need set up corresponding pipeline, be equipped with corresponding switch structure in the pipeline, but current pipeline and switch structure can make and have one section idle region between the pipeline switch structure in the work kettle, the unable effectual participation processing of material in this region, very big going on that is unfavorable for production work.
Therefore, a hypereutectic silicon-aluminum alloy production device and a modification process thereof are provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a hypereutectic silicon-aluminum alloy production device and a modification process thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a hypereutectic silicon-aluminum alloy apparatus for producing, includes the base, fixedly connected with is a plurality of support frames that are mutual symmetry setting on the up end of base, and is a plurality of the support frame is the setting of keeping away from each other, and is a plurality of the common fixedly connected with work cauldron of one end that the base was kept away from to the support frame, be equipped with the working chamber on the inner wall of work cauldron, fixedly connected with heat-conducting plate on the inner wall of working chamber, be equipped with heat-conducting liquid in the working chamber, fixedly connected with heater on the outer wall of work cauldron, the output of heater runs through the work cauldron setting, all be equipped with the lift groove on two inner walls of heat-conducting plate, two equal sliding connection has the elevator, two in the lift groove fixedly connected with fixed axle between the elevator, it is connected with the rotating tube to rotate on the fixed axle, the sediment net is taken off to fixedly connected with on the rotating tube, the cover is equipped with torsion spring on the fixed axle, torsion spring's one end fixed connection sets up on the inner wall of rotating tube, and torsion spring's the other end fixed connection sets up on the fixed axle, the side wall that the base was kept away from to the work cauldron is kept away from fixedly connected with flexible motor, the work sets up on one of working block through work fixed connection sets up on one of working block, it sets up the setting is symmetrical control network structure.
Preferably, the control structure includes that fixed connection is taken off the stay cord that the sediment net is close to on a lateral wall of base, fixedly connected with rotates the motor on keeping away from a lateral wall of base on the support frame, fixedly connected with pulley in the axis of rotation motor, the stay cord is kept away from the one end winding of taking off the sediment net and is set up on the pulley, the stay cord is kept away from the one end fixed connection of taking off the sediment net and is set up on the pulley, be equipped with blanking structure on the reation kettle.
Preferably, blanking structure is including setting up the feed opening on the work cauldron is close to a lateral wall of base, fixedly connected with unloading pipe on the lateral wall that the work cauldron is close to the base, sliding connection has stifled chock in the feed opening, the one end that the base was kept away from to stifled chock is the matching setting with the inner wall of work cauldron, the fixedly connected with lift seat on the lateral wall that the chock is close to the base, the lift seat is equipped with the draw-in groove on being close to a lateral wall of base, be equipped with the bevel piece in the draw-in groove, fixedly connected with propulsion motor on the outer wall of unloading pipe, propulsion motor's propulsion end runs through unloading pipe fixed connection and sets up on the bevel piece, sliding connection has the stop collar on the lift seat, fixedly connected with connecting rod on the outer wall of stop collar, connecting rod fixed connection sets up on the inner wall of unloading pipe.
Preferably, a clamping block is connected in the clamping groove in a sliding mode, and the clamping block is fixedly connected to the inclined plane block.
Preferably, one end of the working kettle close to the base is semicircular, and the shape of the slag removing net is matched with one end of the working kettle close to the base.
A hypereutectic silicon-aluminum alloy modification process comprises the following steps:
1) Smelting aluminum alloy according to the mass fraction: firstly, a heater is started, so that the heater heats heat-conducting liquid through an output end, then heating work of a heat-conducting plate is completed, then an aluminum ingot is placed into a working kettle for heating, the aluminum ingot is melted and then is sequentially added with an industrial silicon block and an aluminum-copper intermediate alloy for melting, the melting temperature is set to 790-810 ℃ through the heater, after ingredients are completely melted, a slag skimming agent is scattered into the working kettle for skimming, and stirring is performed for more than two times, when skimming is performed, two rotating motors can be controlled to control rotating shafts to drive corresponding pulleys to rotate to proper positions, then the two pulleys can be wound or release pull ropes, so that the skimming net can be connected with the skimming net through the two pull ropes, and a torsion spring is arranged, so that the skimming net can descend in a vertical state, after a lifting block drives the skimming net to descend to the bottom of the working kettle by utilizing the output shaft of a telescopic motor, the two rotating motors are controlled to reset and rotate, so that the skimming net can reset under the elastic force action of the torsion spring, then the skimming net is attached to complete skimming work, and then the slag is reversely repeated to ascend, so that the skimming net can be pressed into another working kettle in a 745-745 magnesium ingot stirring direction, and when the skimming ingot is melted, and magnesium is performed, and the slag is melted again;
2) Furnace guiding and refining: guiding the melt obtained in the step 1) into a standing furnace through a blanking pipe, controlling a propulsion motor to push an inclined plane block to slide through a propulsion end in the blanking process, then enabling the inclined plane block to push a lifting seat and a blocking block to ascend through a clamping groove, enabling the blocking block to be separated from a feeding hole, enabling the melt to smoothly enter the standing furnace through the feeding hole and the blanking pipe, introducing a refining agent into the melt through argon for refining, and then skimming slag to finish the melt purification treatment;
3) Modification treatment: adjusting the temperature of the melt obtained in the step 2) to 770-780 ℃, then pressing the aluminum-phosphorus alterant into the melt according to 20kg/t, stirring for 3 times, wherein the stirring interval time is 5-6min and the stirring time is 7-8min;
4) Heating and standing: adjusting the temperature of the melt obtained in the step 3) to 750-770 ℃, standing for 30min, guiding the melt into a filter box and a degassing box through a launder to further complete melt purification, and simultaneously uniformly melting aluminum-titanium-boron wires into the aluminum melt through a wire feeder at the front end of the filter box;
5) Casting: casting the melt obtained in the step 4), wherein the casting speed is 60-120mm/min, and the cooling water flow is controlled at 40-90L/min;
6) Homogenizing cast ingots: homogenizing the ingot obtained in the step 5), keeping the temperature at 470-480 ℃ for 8-10h, discharging and cooling with water, wherein the cooling strength is more than or equal to 200 ℃/h;
7) Section bar material: heating the cast ingot obtained in the step 6) to 350-400 ℃, controlling the temperature of an extrusion cylinder to 350-380 ℃, carrying out online quenching extrusion production by adopting a bar die at the speed of 2-4m/min, wherein the online cooling strength is more than or equal to 2 ℃/s.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a user can freely lift the slag raking net by means of the structures such as the telescopic motor and the like, the slag raking net can rotate in the working kettle by means of the structures such as the two rotating motors and the two pull ropes, and the slag raking net and the special shape of the working kettle close to the base are matched, so that the slag raking net can fully filter out slag in the working kettle, the processing quality is greatly ensured, meanwhile, the blocking block is lifted by means of the matching arrangement of the blocking block and the working kettle and the structures such as the pushing motor and the like, the situation that materials are not involved in processing work can be avoided while the smooth transfer of the materials is ensured, and the production quality of products is further ensured.
2. The hypereutectic aluminum alloy coarse crystalline silicon has the average size of less than or equal to 50 microns and the maximum size of less than or equal to 80 microns, and can produce ingots with the diameter of 90-330 mm.
Drawings
FIG. 1 is a cross-sectional view of the front structure of a hypereutectic aluminum-silicon alloy production apparatus according to the present invention;
FIG. 2 is an enlarged view of the structure A of FIG. 1;
fig. 3 is a partial side sectional view of a hypereutectic aluminum silicon alloy production apparatus according to the present invention.
In the figure: the device comprises a base 1, a support frame 2, a working kettle 3, a working cavity 4, a heat conducting plate 5, a heater 6, a lifting groove 7, a lifting block 8, a fixed shaft 9, a rotating pipe 10, a slag removing net 11, a torsion spring 12, a telescopic motor 13, a pull rope 14, a rotating motor 15, a pulley 16, a feed opening 17, a feed pipe 18, a plugging block 19, a lifting seat 20, a clamping groove 21, a bevel block 22, a propelling motor 23, a limiting sleeve 24, a connecting rod 25, a clamping block 26 and heat conducting liquid 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a hypereutectic silicon-aluminum alloy production device, including a base 1, a plurality of support frames 2 symmetrically arranged with each other are fixedly connected to the upper end surface of the base 1, the plurality of support frames 2 are arranged away from each other, one end of the plurality of support frames 2 away from the base 1 is fixedly connected with a working kettle 3 together, a working chamber 4 is arranged on the inner wall of the working kettle 3, a heat conducting plate 5 is fixedly connected to the inner wall of the working chamber 4, heat conducting liquid 27 is arranged in the working chamber 4, a heater 6 is fixedly connected to the outer wall of the working kettle 3, the output end of the heater 6 penetrates through the working kettle 3, lifting grooves 7 are arranged on two inner walls of the heat conducting plate 5, lifting blocks 8 are slidably connected in the two lifting grooves 7, a fixed shaft 9 is fixedly connected between the two lifting blocks 8, a rotating pipe 10 is rotatably connected to the fixed shaft 9, a slag raking net 11 is fixedly connected to the rotating pipe 10, one end of the working kettle 3 close to the base 1 is arranged in a semicircular shape, the slag raking net 11 is arranged to be matched with one end of the working kettle 3 close to the base 1, and the inner wall of the working kettle 3 is completely attached to the working kettle 3;
a torsion spring 12 is sleeved on the fixed shaft 9, one end of the torsion spring 12 is fixedly connected on the inner wall of the rotating tube 10, the other end of the torsion spring 12 is fixedly connected to the fixed shaft 9, the torsion spring 12 is arranged so that the rotary pipe 10 and the slag raking net 11 can smoothly complete reset work and then can hold slag to rise, a telescopic motor 13 is fixedly connected to a side wall of the working kettle 3 far away from the base 1, an output shaft of the telescopic motor 13 penetrates through the working kettle 3 and is fixedly connected to one lifting block 8, two symmetrically-arranged control structures are arranged on the slag raking net 11, the control structures comprise a pull rope 14 fixedly connected to a side wall of the slag raking net 11 close to the base 1, a rotary motor 15 is fixedly connected to a side wall of the support frame 2 far away from the base 1, a pulley 16 is fixedly connected to a rotating shaft of the rotary motor 15, one end of the pull rope 14 far away from the slag raking net 11 is wound on the pulley 16, one end of the pull rope 14 far away from the slag raking net 11 is fixedly connected to the pulley 16, a blanking structure is arranged on the working kettle 3, the blanking structure comprises a blanking port 17 arranged on a side wall of the working kettle 3 close to the base 1, a side wall of the clamping block 3 close to the base 1, a blanking port 18 is fixedly connected to an outer wall of the base 1, a clamping block 17, a clamping block 19 is fixedly connected to a clamping block 21 arranged on an inclined surface block 21 arranged on an inner wall of the base 1, a clamping groove 21 close to which is connected to a clamping groove 21, and is arranged on a clamping block 21, and a clamping groove 21 which is arranged on a lifting block 21 which is arranged on the base 21, and is arranged on a side wall of the base 21, and a lifting block 21, and a clamping groove 26 which is arranged on the base 21, and is arranged on the base 1, and a lifting block 21, and a clamping groove 21 is arranged on the base 21, and a clamping block 21 is arranged in the lifting block 21, and a clamping groove 26 which is arranged on the lifting block 21 is arranged on the base 1, and is arranged on the lifting block 21 is arranged on the base, and is arranged in the lifting block 21, and is arranged on the lifting block 21;
fixedly connected with propulsion motor 23 on the outer wall of unloading pipe 18, propulsion motor 23's propulsion end runs through unloading pipe 18 fixed connection and sets up on sloping piece 22, sliding connection has stop collar 24 on lift seat 20, fixedly connected with connecting rod 25 on the outer wall of stop collar 24, connecting rod 25 fixed connection sets up on the inner wall of unloading pipe 18, set up like this and make the lift that jam piece 19 and lift seat 20 can be stable, accomplish material emission and jam work then.
A hypereutectic silicon-aluminum alloy modification process comprises the following steps:
1) Smelting aluminum alloy according to the mass fraction: firstly, a heater 6 is started, so that the heater 6 heats a heat-conducting liquid 27 through an output end, then the heating work of a heat-conducting plate 5 is completed, then an aluminum ingot is put into a working kettle 3 for heating, the aluminum ingot is melted and then is sequentially added with an industrial silicon block and an aluminum-copper intermediate alloy for melting, the melting temperature is set to 790-810 ℃ through the heater 6, after the ingredients are completely melted, a slag skimming agent is scattered into the working kettle 3 for skimming, and stirring is carried out for more than two times, when skimming is carried out, two rotating motors 15 can be controlled to control rotating shafts to drive corresponding pulleys 16 to rotate to proper positions, then the two pulleys 16 can be wound or release pull ropes 14, and thus the two pull ropes 14 are connected with a skimming net 11, the arrangement of the torsion spring 12 enables the slag removing net 11 to descend in a vertical state, after the lifting block 8 drives the slag removing net 11 to descend to the bottom of the working kettle 3 by utilizing an output shaft of the telescopic motor 13, the two rotary motors 15 are controlled to reset and rotate, the slag removing net 11 can reset under the elastic force of the torsion spring 12 and then is attached to the bottom of the working kettle 3 to shovel and complete slag removing work, and then the slag removing net 11 can shovel and remove slag in the other direction by repeating the ascending step in the reverse direction, so that slag in the working kettle 3 can be comprehensively filtered, the processing quality of products is greatly guaranteed, magnesium ingots are pressed into a melt when the temperature is reduced to 745-745 ℃, and stirring and slag removing are carried out after the magnesium ingots are melted;
2) Guiding a furnace and refining: the melt obtained in the step 1 is guided into a standing furnace through a feeding pipe 18, in the feeding process, a pushing motor 23 is controlled to push a bevel block 22 to slide through a pushing end, then the bevel block 22 can push a lifting seat 20 and a blocking block 19 to ascend through a clamping groove 21, the blocking block 19 is separated from a feeding port 17, then the melt can smoothly enter the standing furnace through the feeding port 17 and the feeding pipe 18, in this way, the material can be smoothly transferred, meanwhile, the blocking block 19 is attached to the inner wall of a working kettle 3, the material is completely positioned in the working kettle 3 during processing, then, sufficient processing work can be completed in the working kettle 3, the omission situation cannot occur, the processing quality is further guaranteed, a refining agent is introduced into the melt for refining through argon, slag removal is performed afterwards, and melt purification treatment is completed;
3) Modification treatment: adjusting the temperature of the melt obtained in the step 2) to 770-780 ℃, then pressing the aluminum-phosphorus alterant into the melt according to 20kg/t, and stirring for 3 times, wherein the interval time of each stirring is 5-6min, and the stirring time is 7-8min;
4) Heating and standing: adjusting the temperature of the melt obtained in the step 3) to 750-770 ℃, then standing for 30min, then guiding the melt into a filter box and a degassing box through a launder, further completing melt purification, and simultaneously uniformly melting aluminum-titanium-boron wires into the aluminum melt through a wire feeder at the front end of the filter box;
5) Casting: casting the melt obtained in the step 4), wherein the casting speed is 60-120mm/min, and the cooling water flow is controlled at 40-90L/min;
6) Ingot casting homogenization: homogenizing the ingot obtained in the step 5), keeping the temperature for 8-10h at the homogenizing temperature of 470-480 ℃, and then discharging from the furnace and cooling with water, wherein the cooling strength is more than or equal to 200 ℃/h;
7) Section bar material: heating the cast ingot obtained in the step 6) to 350-400 ℃, controlling the temperature of an extrusion cylinder to 350-380 ℃, carrying out online quenching extrusion production by adopting a bar die at the speed of 2-4m/min, wherein the online cooling strength is more than or equal to 2 ℃/s.
The hypereutectic silicon-aluminum alloy bar produced and processed by the process comprises the following chemical components in percentage by mass: si:15.0 to 18.0%, cu:4.0-5.0%, mg:0.4% -0.7%, P:0.08-0.12%, fe is less than or equal to 0% and less than or equal to 25%, ti is less than or equal to 0.1%, mn is 0.9-1.2%, RE is less than or equal to 0.05%, other elements are less than or equal to 0.05% individually, the sum is less than or equal to 0.15%, the average size of the hypereutectic aluminum alloy coarse crystalline silicon is less than or equal to 50 μm, the maximum size is less than or equal to 80 μm, the cast ingot with the diameter of 90-330mm can be produced, the hardness of the hypereutectic silicon rod material in the H112 state is 80-90HBW, compared with the eutectic silicon in the same state, the hardness is improved by more than 25%, the quality of an aluminum alloy piston is greatly guaranteed, meanwhile, the aluminum-phosphorus alterant is adopted, the growth of the coarse crystalline silicon can be greatly limited, and the melt is more fully altered through multiple times of stirring, so that the quality of the product is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A hypereutectic silicon-aluminum alloy production device comprises a base (1) and is characterized in that a plurality of support frames (2) which are symmetrically arranged with each other are fixedly connected to the upper end face of the base (1), a plurality of support frames (2) are arranged away from each other, one end of each support frame (2) away from the base (1) is fixedly connected with a working kettle (3) together, a working cavity (4) is arranged on the inner wall of the working kettle (3), a heat-conducting plate (5) is fixedly connected to the inner wall of the working cavity (4), heat-conducting liquid (27) is arranged in the working cavity (4), a heater (6) is fixedly connected to the outer wall of the working kettle (3), the output end of the heater (6) penetrates through the working kettle (3) to be arranged, lifting grooves (7) are respectively arranged on two inner walls of the heat-conducting plate (5), lifting blocks (8) are respectively connected in the lifting grooves (7) in a sliding manner, a fixing shaft (9) is fixedly connected between the two lifting blocks (8), a rotating shaft (10) is rotatably connected to the fixing shaft (9), a rotating spring (11) is fixedly connected to the inner wall of the rotating shaft (12), and one end of a torsion spring (12) is sleeved on the rotating shaft (10), and the other end fixed connection of torsion spring (12) sets up on fixed axle (9), fixedly connected with flexible motor (13) on the lateral wall of base (1) is kept away from in reation kettle (3), the output shaft of flexible motor (13) runs through reation kettle (3) fixed connection and sets up on one of them elevator (8), it is the control structure that the symmetry set up to be equipped with two on slag raking net (11).
2. The hypereutectic silicon-aluminum alloy production device according to claim 1, wherein the control structure comprises a pull rope (14) fixedly connected to one side wall of the slag-off net (11) close to the base (1), a rotating motor (15) is fixedly connected to one side wall of the support frame (2) far away from the base (1), a pulley (16) is fixedly connected to a rotating shaft of the rotating motor (15), one end of the pull rope (14) far away from the slag-off net (11) is wound on the pulley (16) to be arranged, one end of the pull rope (14) far away from the slag-off net (11) is fixedly connected to the pulley (16) to be arranged, and a blanking structure is arranged on the working kettle (3).
3. The hypereutectic silicon-aluminum alloy production device according to claim 2, wherein the blanking structure comprises a blanking opening (17) formed in the position, close to one side wall of the base (1), of the working kettle (3), the blanking pipe (18) is fixedly connected to the position, close to the base (1), of the outer wall of one side of the working kettle (3), a plugging block (19) is connected in the blanking opening (17) in a sliding mode, one end, far away from the base (1), of the plugging block (19) is matched with the inner wall of the working kettle (3), the plugging block (19) is close to one side wall of the base (1), a lifting seat (20) is fixedly connected to the lifting seat (20) and is arranged on one side wall, close to the base (1), of the lifting seat (20), a bevel blocks (22) are arranged in the clamping groove (21), a pushing motor (23) is fixedly connected to the outer wall of the blanking pipe (18), the pushing end of the pushing motor (23) penetrates through the blanking pipe (18) and is fixedly connected to the bevel blocks (22), a limiting sleeve (24) is connected to the inner wall of the connecting rod (25).
4. A hypereutectic silicon aluminum alloy production apparatus as claimed in claim 3 wherein said notch (21) is slidably connected with a block (26), said block (26) being fixedly connected to said ramp block (22).
5. A hypereutectic silicon aluminum alloy production device according to claim 1, wherein one end of the working kettle (3) close to the base (1) is semicircular, and the shape of the slag-off net (11) is matched with one end of the working kettle (3) close to the base (1).
6. A hypereutectic silicon-aluminum alloy modification process is characterized by comprising the following steps:
1) Smelting aluminum alloy according to the mass fraction: firstly, a heater (6) is started to heat a heat conducting liquid (27) by the heater (6) through an output end, then the heating work of a heat conducting plate (5) is completed, then an aluminum ingot is put into a working kettle (3) to be heated, the aluminum ingot is melted and then is sequentially added with an industrial silicon block and an aluminum-copper intermediate alloy to be melted, the melting temperature is set to be 790-810 ℃ through the heater (6), after the ingredients are completely melted, a slagging-off agent is scattered into the working kettle (3) to carry out slagging-off, and stirring is carried out for more than two times, when slagging-off is carried out, two rotating motors (15) can be controlled to control rotating shafts to drive corresponding pulleys (16) to rotate to proper positions first, then the two pulleys (16) can be rolled or the pull ropes (14) can be released, so that the two pull ropes (14) can be connected with the slag-raking net (11), and the torsion spring (12) is arranged, so that the slag-raking net (11) can descend in a vertical state, after the lifting block (8) drives the slag-raking net (11) to descend to the bottom of the working kettle (3) by utilizing the output shaft of the telescopic motor (13), the two rotating motors (15) are controlled to reset and rotate, so that the slag-raking net (11) can reset under the elastic force of the torsion spring (12), then the slag-raking net (11) is attached to the bottom of the working kettle (3) to shovel and complete the slag-raking work, and then the slag-raking work in another direction can be completed by reversely and repeatedly ascending steps, when the temperature is reduced to 745-745 ℃, pressing a magnesium ingot into the melt, and stirring and slagging off the magnesium ingot after the magnesium ingot is melted;
2) Furnace guiding and refining: guiding the melt obtained in the step 1) into a standing furnace through a discharging pipe (18), controlling a pushing motor (23) to push an inclined block (22) to slide through a pushing end in the discharging process, enabling the inclined block (22) to push a lifting seat (20) and a blocking block (19) to ascend through a clamping groove (21), enabling the blocking block (19) to be separated from a discharging port (17), enabling the melt to smoothly enter the standing furnace through the discharging port (17) and the discharging pipe (18), introducing a refining agent into the melt through argon for refining, and then removing slag to finish melt purification treatment;
3) Modification treatment: adjusting the temperature of the melt obtained in the step 2) to 770-780 ℃, then pressing the aluminum-phosphorus alterant into the melt according to 20kg/t, and stirring for 3 times, wherein the interval time of each stirring is 5-6min, and the stirring time is 7-8min;
4) Heating and standing: adjusting the temperature of the melt obtained in the step 3) to 750-770 ℃, standing for 30min, guiding the melt into a filter box and a degassing box through a launder to further complete melt purification, and simultaneously uniformly melting aluminum-titanium-boron wires into the aluminum melt through a wire feeder at the front end of the filter box;
5) Casting: casting the melt obtained in the step 4), wherein the casting speed is 60-120mm/min, and the cooling water flow is controlled at 40-90L/min;
6) Homogenizing cast ingots: homogenizing the ingot obtained in the step 5), keeping the temperature at 470-480 ℃ for 8-10h, discharging and cooling with water, wherein the cooling strength is more than or equal to 200 ℃/h;
7) Section bar material: heating the cast ingot obtained in the step 6) to 350-400 ℃, controlling the temperature of an extrusion cylinder to 350-380 ℃, carrying out online quenching extrusion production by adopting a bar mold at the profile speed of 2-4m/min, wherein the online cooling strength is more than or equal to 2 ℃/s.
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| CN117804071A (en) * | 2024-03-01 | 2024-04-02 | 佛山市九龙机器有限公司 | Water heater convenient to clean and filter |
| CN117804071B (en) * | 2024-03-01 | 2024-05-10 | 佛山市九龙机器有限公司 | Water heater convenient to clean and filter |
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