CN214263894U - Gradient ingot casting device - Google Patents
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- CN214263894U CN214263894U CN202022987831.6U CN202022987831U CN214263894U CN 214263894 U CN214263894 U CN 214263894U CN 202022987831 U CN202022987831 U CN 202022987831U CN 214263894 U CN214263894 U CN 214263894U
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Abstract
The utility model provides a gradient ingot casting device relates to metallurgical technical field, this gradient ingot casting device includes reaction vessel, the shaping mobile station, dummy ingot subassembly and a plurality of crucible, the activity of shaping mobile station sets up in reaction vessel, and can follow reaction vessel's diapire free movement, the dummy ingot subassembly sets up in reaction vessel, and be connected with the shaping mobile station, a plurality of crucibles set up in reaction vessel's top, the dummy ingot subassembly is used for removing the below to one of them crucible under the drive of shaping mobile station, the crucible is used for holding ingot casting material, and pour into the ingot casting material to the dummy ingot subassembly. Through setting up a plurality of crucibles in reaction vessel's top to utilize the shaping mobile station to drive the dummy ingot subassembly and remove between the crucible of difference, thereby can realize placing the aluminium liquid of the required different composition of preparation gradient alloy ingot casting in same device simultaneously and spray forming in proper order, improved the production efficiency of ingot casting, and can prepare the equiaxed crystal ingot casting of segregation.
Description
Technical Field
The utility model relates to a metallurgical technology field particularly, relates to a gradient ingot casting device.
Background
When a gradient aluminum alloy ingot is cast by a conventional casting method, it is difficult to obtain a complete equiaxed crystal structure due to the sequence of solidification. Columnar crystals always exist in the alloy structure in a certain proportion, which is not beneficial to obtaining higher alloy performance through the subsequent deformation process. Furthermore, the density of the alloy ingot is improved and the oxidation of the alloy ingot is reduced by changing atomization injection into liquid injection. However, the inventor researches and discovers that in the casting equipment in the prior art, the molten aluminum with different components required for preparing the gradient alloy ingot is respectively placed in different devices, and transition is required between the different devices during casting, so that the production efficiency of the ingot is greatly reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gradient ingot casting device, its injection moulding that can carry out the ingot casting material of different compositions in proper order in same device has improved the production efficiency of ingot casting greatly.
The embodiment of the utility model is realized like this:
in a first aspect, the utility model provides a gradient ingot casting device, including reaction vessel, shaping mobile station, dummy ingot subassembly and a plurality of crucible, the activity of shaping mobile station sets up in the reaction vessel, and can follow reaction vessel's diapire freely removes, the dummy ingot subassembly sets up in the reaction vessel, and with the shaping mobile station is connected, and is a plurality of the crucible sets up reaction vessel's top, the dummy ingot subassembly is used for remove to one of them under the drive of shaping mobile station the below of crucible, the crucible is used for holding ingot casting material, and to the dummy ingot subassembly pours into the ingot casting material.
In an optional embodiment, the dummy bar assembly includes a cooling table, a dummy bar head and a first connecting rod, the cooling table is disposed on the forming moving table and is provided with a cooling medium inside, a dummy bar sleeve is disposed on the cooling table, the dummy bar head is accommodated in the dummy bar sleeve and is used for receiving the ingot casting material injected from the crucible, one end of the first connecting rod is connected to the dummy bar head, and the other end of the first connecting rod is connected to the forming moving table.
In an optional embodiment, the dummy bar assembly further includes a lifting driving member, which is disposed on the forming moving table and connected to an end of the first connecting rod away from the dummy bar head, for driving the first connecting rod to ascend or descend.
In an alternative embodiment, a nozzle for communicating the crucible and the reaction container is arranged at the bottom of each crucible, and a baffle for opening or closing the nozzle is arranged at one end of each nozzle close to the crucible.
In an alternative embodiment, a first heating element for preheating the nozzles is provided around each of the nozzles.
In an optional embodiment, a second connecting rod is further disposed in the crucible, and the second connecting rod is connected to the baffle and is used for driving the baffle to open or close the nozzle.
In an alternative embodiment, a mounting table is arranged at the top of the reaction vessel, a plurality of crucibles are arranged on the mounting table, and a second heating element for heating the crucibles is embedded around each crucible.
In an alternative embodiment, the periphery of the mounting table is further provided with an insulating layer.
In an alternative embodiment, a filter layer is disposed within each crucible for filtering the ingot material entering the nozzle.
In an optional embodiment, the opposite side walls of the reaction container are respectively provided with a vacuum pumping pipe joint and a vent pipe joint, the vacuum pumping pipe joint is used for being externally connected with a vacuum pump to pump out air in the reaction container, and the vent pipe joint is used for being externally connected with an air pump to introduce protective gas into the reaction container.
The utility model discloses beneficial effect includes:
the embodiment of the utility model provides a gradient ingot casting device, the activity of shaping mobile station sets up in reaction vessel to can follow reaction vessel's diapire and freely remove, the dummy ingot subassembly sets up in reaction vessel, and is connected with the shaping mobile station, and a plurality of crucibles set up in reaction vessel's top, and the dummy ingot subassembly is used for removing to the below of one of them crucible under the drive of shaping mobile station, and the crucible is used for holding ingot casting material, and pours into ingot casting material to the dummy ingot subassembly. Through setting up a plurality of crucibles in reaction vessel's top to utilize the shaping mobile station to drive dummy ingot subassembly and remove between the crucible of difference, thereby can realize placing the aluminium liquid of the required different composition of preparation gradient alloy ingot casting in same device simultaneously and spray the shaping in proper order, improved the production efficiency of ingot casting.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a gradient ingot casting device provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a connection structure between the forming moving table and the dummy bar assembly shown in FIG. 1;
FIG. 3 is a schematic view of the crucible and mounting plate of FIG. 1 shown in a first view;
FIG. 4 is a schematic view of the crucible and the mounting table of FIG. 1, shown in a second view;
fig. 5 is a schematic diagram of a moving track of the forming moving table when the nozzle sprays the ingot casting material according to the embodiment of the present invention.
Icon: 100-gradient ingot casting device; 110-a reaction vessel; 111-vacuum pipe joint; 113-a breather fitting; 130-form the mobile station; 150-a dummy ingot assembly; 151-cooling table; 153-dummy bar head; 155-a first link; 157-a lifting drive; 159-dummy ingot sleeve; 170-crucible; 171-a nozzle; 172-a baffle; 173-a first heating element; 174-a second link; 175-a second heating element; 176-a filter layer; 190-mounting table; 191-an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As disclosed in the background art, when the gradient ingot is cast by using a conventional casting room in the prior art, all equiaxed crystal structures are difficult to obtain due to the solidification sequence, namely, the solidification sequence is thick, the outer layer is cooled quickly, the solidification is rapid, the inner layer is cooled slowly, and the solidification speed is relatively slow, so that a certain proportion of columnar crystals exist in the alloy, and the performance of the alloy is influenced. In order to solve the problem, a method for forming an ingot by using a liquid spraying process is provided, and the method can improve the compactness of the alloy ingot and reduce the oxidation of the alloy ingot. However, when preparing the gradient alloy ingot, the prior art generally puts alloy ingot materials with different gradients into different heating devices, and the ingot guiding device needs to be switched among the different heating devices during casting so as to form the gradient alloy, which undoubtedly greatly reduces the production efficiency of the ingot.
To improve the efficiency of ingot production, the present invention provides a novel gradient ingot casting apparatus, it being noted that the components of the embodiments of the present invention, generally described and illustrated in the drawings herein, can be arranged and designed in a variety of different configurations.
With reference to fig. 1 to 5, the present embodiment provides a gradient ingot casting apparatus 100, which can simultaneously place molten aluminum with different components required for preparing a gradient alloy ingot in a same apparatus for sequential injection molding, thereby improving the production efficiency of the ingot casting.
The gradient ingot casting device 100 provided by this embodiment includes a reaction vessel 110, a forming moving table 130, a dummy bar assembly 150 and a plurality of crucibles 170, wherein the forming moving table 130 is movably disposed in the reaction vessel 110 and can freely move along a bottom wall of the reaction vessel 110, the dummy bar assembly 150 is disposed in the reaction vessel 110 and is connected to the forming moving table 130, the plurality of crucibles 170 are disposed above the reaction vessel 110, the dummy bar assembly 150 is configured to move to a position below one of the crucibles 170 under the driving of the forming moving table 130, and during the moving process, a surface of an ingot which is formed before protrudes a certain distance D2 above an upper surface of a cooling table 151, so as to ensure that a solid phase is not completely formed on the surface of an original ingot before an ingot layer of a next component is formed, and a bonding effect between different gradient layers is weakened. The crucible 170 is used for receiving the ingot material and injecting the ingot material into the dummy bar assembly 150.
In this embodiment, the number of the crucibles 170 is 6, 6 crucibles 170 are uniformly distributed above the reaction vessel 110, and during actual casting, the forming moving table 130 moves along the bottom wall of the reaction vessel 110, so as to move the dummy bar assembly 150 to the lower part of one of the crucibles 170, after cooling to form a partial ingot, the dummy bar assembly 150 moves to the lower part of the other crucible 170 through the forming moving table 130, a film layer is formed on the surface of the formed ingot, and after moving to the lower parts of the 6 crucibles 170, a gradient ingot is formed. Due to the adoption of the forming moving table 130 and the arrangement of the plurality of crucibles 170 above the reaction vessel 110, the gradient ingot casting can be realized in the same reaction vessel 110 without transition in different reaction vessels 110, and the production efficiency of the ingot casting is greatly improved. Of course, the number of crucibles 170 is merely illustrative here, and the number of crucibles 170 may vary for different materials, different gradients of ingots.
In the present embodiment, the plurality of crucibles 170 contain different ingot materials, so that ingots with different gradients are formed. For example, 6 crucibles 170 may be filled with ingot materials of Al-Mg, Al-Si, Al-Mn, Al-Cr, Al-Zn, respectively, to form a graded alloy ingot having a fully equiaxed structure and no segregation, which is a square gradient.
In this embodiment, the forming moving stage 130 is driven by a motor, and the moving manner may be a wheel type or a rail type, which is not limited herein. It should be noted that the forming moving stage 130 may be driven by a motor to move freely, or may be driven by a motor to move horizontally along the front, back, left, and right directions, and the moving direction is not limited. For the internal structure and control principle of the modeling mobile station 130, reference may be made to an existing mobile platform.
The forming moving table 130 in the present embodiment is used to move the dummy bar assembly 150 to a position below a different crucible 170. Meanwhile, the forming moving stage 130 is also configured to move a small amount in a specific direction and trajectory under the corresponding crucible 170, thereby ensuring uniformity of the film during forming.
The dummy bar assembly 150 comprises a cooling table 151, a dummy bar head 153, a first connecting rod 155 and a lifting driving member 157, wherein the cooling table 151 is arranged on the forming moving table 130 and is internally provided with a cooling medium, a dummy bar sleeve 159 is arranged on the cooling table 151, the dummy bar head 153 is accommodated in the dummy bar sleeve 159 and is used for receiving ingot casting materials injected from the crucible 170, one end of the first connecting rod 155 is connected with the dummy bar head 153, and the lifting driving member 157 is arranged on the forming moving table 130 and is connected with one end of the first connecting rod 155, which is far away from the dummy bar head 153, and is used for driving the first connecting rod 155 to ascend or descend.
In the present embodiment, the cooling platform 151 is a closed structure, and the cooling medium such as cooling water is filled in the cooling platform 151, and the dummy bar sleeve 159 is integrally disposed in the middle of the cooling platform 151, so as to be directly contacted with the cooling medium, thereby improving the cooling effect.
In this embodiment, the lifting driving member 157 is a driving motor, a gear is disposed on an output shaft of the driving motor, a rack engaged with the gear is disposed at a lower portion of the first link 155, and the driving motor can drive the first link 155 to ascend or descend, so that the dummy bar head 153 can ascend or descend, and ingot forming is facilitated.
In the present embodiment, the bottom of each crucible 170 is provided with a nozzle 171 for communicating the crucible 170 with the reaction vessel 110, and one end of each nozzle 171 near the crucible 170 is provided with a shutter 172 for opening or closing the nozzle 171. Specifically, the nozzle 171 is an adjustable nozzle 171, and by adjusting the slit width of the nozzle 171, the ejection flow rate and the ejection distance can be adjusted, and by providing the baffle 172, the ejection of the nozzle 171 can be effectively controlled.
In the present embodiment, a first heating member 173 for preheating the nozzle 171 is provided around each nozzle 171. The crucible 170 is further provided with a second connecting rod 174, and the second connecting rod 174 is connected to the shutter 172 for driving the shutter 172 to open or close the nozzle 171. Specifically, the second link 174 extends upward out of the crucible 170, and the second link 174 can be driven to move up and down by a hand or a driving member, so as to open and close the nozzle 171.
In the present embodiment, the reaction vessel 110 is provided at the top thereof with a mounting table 190, a plurality of crucibles 170 are provided on the mounting table 190, and a second heating element 175 for heating the crucibles 170 is embedded around each crucible 170. Specifically, the periphery of the mounting table 190 is further provided with an insulating layer 191, which can effectively insulate the plurality of crucibles 170 and ensure the heating effect.
In the present embodiment, a filter layer 176 is provided in each crucible 170, and the filter layer 176 is used to filter the ingot material entering the nozzle 171. Specifically, the center of the filter layer 176 is further provided with a relief hole for the second link 174 to pass through.
In this embodiment, the opposite sidewalls of the reaction container 110 are respectively provided with a vacuum pipe joint 111 and a vent pipe joint 113, the vacuum pipe joint 111 is externally connected with a vacuum pump to pump air out of the reaction container 110, and the vent pipe joint 113 is externally connected with an air pump to introduce a shielding gas into the reaction container 110. Specifically, the vacuum pump can pump out air in the reaction vessel 110, so that the reaction vessel 110 is in a negative pressure state, and the air pump can introduce a protective gas, such as argon, into the reaction vessel 110, so as to protect the reaction vessel from oxidation during the casting process.
In the gradient ingot casting apparatus 100 provided in this embodiment, the process of preparing the gradient ingot casting is as follows:
(1) first, completely molten Al-Mg, Al-Si, Al-Mn, Al-Cr, Al-Zn solutions were poured into 6 crucibles 170 (set numbers 1 to 6), respectively, left in the crucibles 170 for 1 hour and adjusted to a suitable temperature T1(T1>660 ℃) by the second heating element 175. The reaction vessel 110 was evacuated by a vacuum pump, and an appropriate amount of argon gas was introduced by an air pump so that the pressure in the reaction vessel 110 was P1(P1<1 atm), and the nozzle 171 was preheated to a temperature of T2(T2>660 ℃) by the first heating element 173.
(2) Then, by adjusting the nozzle 171, a proper spray distance D1 and flow rate are set, and by adjusting the height of the dummy head 153 by the elevating drive member 157, the vertical distance between the contact surface, which is the surface of the dummy head 153, and the cooling surface, which is the upper surface of the cooling stage 151, and the motor, a proper moving speed v1(mm/s), a pass pitch D (mm/pass), and a proper moving manner of the forming moving stage 130 are set, and the basic planar moving manner is as shown in fig. 5, but the actual operation is not limited to this moving manner.
(3) The dummy bar head 153 is moved to the lower part of the crucible 170 by the motor-controlled forming moving table 130, the baffle plate 172 is lifted by the second connecting rod 174, the Al-Mg liquid in the crucible 170 is sprayed out from the nozzle 171 at a speed v2 under the action of the air pressure difference, and is sprayed to the surface of the moving dummy bar head 153 through a distance D1, and is instantaneously condensed under the cooling action. Meanwhile, the forming moving table 130 is controlled to move left and right and back and forth, so that the crystallization is completed on a rectangular plane, and a thin layer with the thickness delta is formed. After the process is finished, the dummy bar head 153 moves downwards by a distance delta, then the forming moving table 130 is controlled to move left and right and back and forth repeatedly to form a new crystallization layer, a square cast ingot with a certain thickness and a full equiaxial crystal structure and without segregation can be prepared by repeating the process, the set left and right stroke and front and back stroke are the length and width dimension of the square cast ingot, and the distance of movement in the vertical direction is the thickness dimension of the alloy layer. After the required thickness H1 of the Al-Mg alloy layer is obtained, the baffle 172 of the nozzle 171 is put down, the forming moving table 130 is moved to enable the ingot to be positioned below the Al-Si liquid crucible 170, and in the moving process, the surface of the ingot formed before is required to be controlled to protrude a certain distance D2 from the upper surface of the cooling table 151 so as to ensure that the surface of the original ingot cannot completely form a solid phase before the ingot layer of the next component is formed, so that the bonding effect between different gradient layers is weakened. The shutter 172 of the nozzle 171 of the crucible 170 for Al — Si solution is opened, and the forming moving stage 130 is repeatedly controlled to move horizontally and back and forth to form a crystal layer of a new alloy composition, and the thickness is similarly δ. The Al-Mg alloy layer with the required thickness H2 can be prepared by repeating the step of preparing the Al-Mg alloy layer. And (3) continuing to perform the operation steps to finally prepare the square gradient alloy ingot with the gradient distribution of Al-Mg, Al-Si, Al-Mn, Al-Zn, Al and Al-Cr layers, the congruent axis crystal structure and no segregation, wherein the set left and right stroke and front and back stroke are the length and width dimensions of the square ingot, and the total distance of movement in the vertical direction is the thickness dimension of the square ingot.
It should be noted that the independently controllable parameters of the preparation process include: 1. pressure p1 of reaction vessel 110: the speed and flow rate of the aluminum liquid injection can be controlled by controlling the air pressure difference between the reaction vessel 110 and the outside. 2. Aluminum and aluminum alloy melt temperature T1 and nozzle 171 preheat temperature T2. 3. The slit width d of the nozzle 171. 4. Spray distance D1 and perpendicular distance D2 between the contact surface and the cooling surface. 5. The cooling stage 151 moving speed v1, the pass pitch d, and the planar moving method.
To sum up, the embodiment of the utility model provides a gradient ingot casting device 100 is applicable to the no segregation equiaxial crystal gradient aluminum alloy ingot of jumbo size, shaping mobile station 130 activity sets up in reaction vessel 110, and can follow the diapire free movement of reaction vessel 110, dummy bar subassembly 150 sets up in reaction vessel 110, and be connected with shaping mobile station 130, a plurality of crucibles 170 set up in reaction vessel 110's top, dummy bar subassembly 150 is used for moving to the below of one of them crucible 170 under shaping mobile station 130's drive, crucible 170 is used for holding ingot casting material, and pour into ingot casting material into to dummy bar subassembly 150. By arranging the plurality of crucibles 170 above the reaction vessel 110 and driving the dummy ingot assembly 150 to move among different crucibles 170 by the forming moving platform 130, the aluminum liquids with different components required by preparing the gradient alloy ingot can be simultaneously placed in the same device to be sequentially subjected to injection forming, and meanwhile, the density of the alloy ingot is improved, the oxidation of the alloy ingot is reduced, and the production efficiency of the ingot is improved by utilizing a liquid injection forming mode.
The following is a detailed description of the actual parameters and the preparation process of the gradient ingot casting apparatus 100 provided in this embodiment, and of course, this is only an example and does not play any limiting role.
Example 1
According to the operation process, pouring Al-Mg, Al-Si, Al-Mn, Al-Cr, Al and Al-Zn liquid into the crucible 170 with the number of 1-6, staying for 1 hour, and adjusting the temperature to 715 ℃. Moving the dummy bar head 153 to the position below the crucible 170 filled with Al-Mg liquid, vacuumizing the reaction container 110, filling a proper amount of argon gas to ensure that the air pressure in the reaction container 110 is 0.5 atmosphere, preheating the nozzle 171 to the temperature of 720 ℃; the spraying distance was set to 18cm, the vertical distance between the contact surface and the cooling surface was set to 2.5cm, the moving speed of the forming moving stage 130 was 5mm/s, the pass interval was 1.2mm, and the moving manner was as shown in FIG. 5. The total displacement of the dummy head 153 in the three directions is set to 100mm for X, 100mm for Y, and 100mm for Z. The baffle 172 is lifted, the aluminum liquid in the heat-preservation crucible 170 is sprayed out from the nozzle 171 under the action of the air pressure difference, the forming moving platform 130 is started to translate for a small time, and the aluminum liquid is sprayed to the surface of the moving dummy head 153 and is instantly condensed under the cooling action. The crystallization is completed on a rectangular plane by controlling the left-right and front-back translation of the forming moving table 130, and a thin layer with the thickness of 1.2mm is formed. After the completion, the dummy bar head 153 is moved downwards by a distance of 1.2mm, and then the forming moving table 130 is controlled to move left and right and back and forth repeatedly to form a new crystal layer, and the process is repeated to prepare the Al-Mg alloy layer with a full equiaxed crystal structure and no segregation, wherein the thickness of the alloy layer is 15 mm. And (3) putting down the baffle 172, moving the forming moving platform 130 to enable the cast ingot to be positioned below the Al-Si liquid crucible 170, opening the baffle 172 of the Al-Si liquid, ejecting the aluminum liquid in the heat-insulating crucible 170 from the nozzle 171 under the action of air pressure difference, simultaneously starting the forming moving platform 130 to translate, and ejecting the aluminum liquid to the upper surface of the moving Al-Mg alloy layer and instantly condensing under the cooling action. The crystallization is completed on a rectangular plane by controlling the left-right and front-back translation of the forming moving table 130, and a thin layer with the thickness of 1.2mm is formed. After the completion, the dummy bar head 153 is moved downward by a distance of 1.2mm, and then the forming moving table 130 is controlled to move left and right and back and forth repeatedly to form a new crystal layer, and the process is repeated to prepare the Al-Si alloy layer with a full equiaxed crystal structure and no segregation, wherein the thickness of the alloy layer is 15 mm. And (3) continuing to perform the operation steps to finally prepare a square gradient alloy ingot with gradient distribution of Al-Mg, Al-Si, Al-Mn, Al-Zn, Al and Al-Cr layers, full equiaxial crystal structure and no segregation, wherein the thicknesses of the gradient alloy layers are respectively 15mm, 20mm and 15 mm. The set left and right strokes and the set front and back strokes are the length and width dimensions of the square cast ingot, and the total distance of movement in the vertical direction is the thickness dimension of the square cast ingot. The resulting cuboidal ingot had dimensions of 100 × 100 (mm).
Example 2
According to the operation process, pouring Al-Mg, Al-Si, Al-Mn, Al-Cr, Al and Al-Zn liquid into the crucible 170 with the number of 1-6, staying for 1 hour, and adjusting the temperature to 680 ℃. Moving the dummy bar head 153 to the position below the crucible 170 filled with Al-Mg liquid, vacuumizing the reaction container 110, filling a proper amount of argon gas to ensure that the air pressure in the reaction container 110 is 0.6 atmosphere, preheating the nozzle 171 to the temperature of 700 ℃; the spraying distance was set to 15cm, the vertical distance between the contact surface and the cooling surface was set to 2.5cm, the moving speed of the forming moving stage 130 was 3.5mm/s, the pass interval was 0.8mm, and the moving manner was as shown in FIG. 5. The total displacement of the dummy head 153 in the three directions is set to X120 mm, Y20 mm, and Z80 mm, respectively. The baffle 172 is lifted, the aluminum liquid in the heat-preservation crucible 170 is sprayed out from the nozzle 171 under the action of the air pressure difference, the forming moving platform 130 is started to translate, and the aluminum liquid is sprayed to the surface of the moving dummy head 153 and is instantly condensed under the cooling action. The crystallization is completed on a rectangular plane by controlling the left-right and front-back translation of the forming moving table 130, and a thin layer with the thickness of 0.8mm is formed. After the completion, the dummy bar head 153 is moved downward by a distance of 0.8mm, and then the forming moving table 130 is controlled to move left and right and back and forth repeatedly to form a new crystal layer, and the process is repeated to prepare the Al-Mg alloy layer with a fully equiaxed crystal structure and no segregation, wherein the thickness of the alloy layer is 10 mm. And (3) putting down a baffle plate 172 of the nozzle 171, moving the forming moving platform 130 to enable the ingot to be positioned below the Al-Si liquid crucible 170, opening the baffle plate 172 of the nozzle 171 of the Al-Si liquid crucible 170, ejecting the aluminum liquid in the heat-insulating crucible 170 from the nozzle 171 under the action of air pressure difference, starting the cooling platform 151 to translate, and ejecting the aluminum liquid to the upper surface of the moving Al-Mg alloy layer to be instantaneously condensed under the cooling action. The crystallization is completed on a rectangular plane by controlling the left-right and front-back translation of the forming moving table 130, and a thin layer with the thickness of 0.8mm is formed. After the completion, the dummy bar head 153 is moved downward by a distance of 0.8mm, and then the forming moving table 130 is controlled to move left and right and back and forth repeatedly to form a new crystal layer, and the process is repeated to prepare the Al-Si alloy layer with a fully equiaxed crystal structure and no segregation, wherein the thickness of the alloy layer is 10 mm. And (3) continuing to perform the operation steps to finally prepare a square gradient alloy ingot with gradient distribution of Al-Mg, Al-Si, Al-Mn, Al-Zn, Al and Al-Cr layers, full equiaxial crystal structure and no segregation, wherein the thicknesses of the gradient alloy layers are respectively 10mm, 15mm and 15 mm. The set left and right strokes and the set front and back strokes are the length and width dimensions of the square cast ingot, and the total distance of movement in the vertical direction is the thickness dimension of the square cast ingot. The resulting cuboidal ingot had dimensions of 120 x 20 x 80 (mm).
Claims (10)
1. The utility model provides a gradient ingot casting device, its characterized in that includes reaction vessel, shaping mobile station, dummy ingot subassembly and a plurality of crucible, the activity of shaping mobile station sets up in the reaction vessel, and can follow reaction vessel's diapire free movement, the dummy ingot subassembly sets up in the reaction vessel, and with the shaping mobile station is connected, and is a plurality of the crucible sets up reaction vessel's top, the dummy ingot subassembly is used for the drive of shaping mobile station is moved to one of them the below of crucible, the crucible is used for holding the ingot casting material, and to the dummy ingot subassembly pours into the ingot casting material.
2. The gradient ingot casting device according to claim 1, wherein the dummy ingot assembly comprises a cooling table, a dummy ingot head and a first connecting rod, the cooling table is arranged on the forming moving table and is internally provided with a cooling medium, a dummy ingot sleeve is arranged on the cooling table, the dummy ingot head is accommodated in the dummy ingot sleeve and is used for receiving the ingot casting material injected from the crucible, one end of the first connecting rod is connected with the dummy ingot head, and the other end of the first connecting rod is connected with the forming moving table.
3. The gradient ingot casting device of claim 2, wherein the dummy bar assembly further comprises a lifting driving member, the lifting driving member is arranged on the forming moving table and is connected with one end of the first connecting bar far away from the dummy bar head, and the lifting driving member is used for driving the first connecting bar to ascend or descend.
4. The gradient ingot casting device according to claim 1, wherein a nozzle for communicating the crucible and the reaction vessel is arranged at the bottom of each crucible, and a baffle for opening or closing the nozzle is arranged at one end of each nozzle close to the crucible.
5. The gradient ingot casting apparatus of claim 4, wherein a first heating element is arranged around each nozzle for preheating the nozzle.
6. The gradient ingot casting device according to claim 4, wherein a second connecting rod is further arranged in the crucible and connected with the baffle for driving the baffle to open or close the nozzle.
7. The gradient ingot casting device according to any one of claims 1 to 6, wherein a mounting table is arranged at the top of the reaction vessel, a plurality of crucibles are arranged on the mounting table, and a second heating element for heating the crucibles is embedded around each crucible.
8. The gradient ingot casting device of claim 7, wherein the periphery of the mounting platform is further provided with an insulating layer.
9. The gradient ingot casting device of claim 7, wherein each crucible is provided with a filter layer therein for filtering the ingot casting material entering the dummy ingot assembly.
10. The gradient ingot casting device according to any one of claims 1 to 6, wherein the opposite side walls of the reaction vessel are respectively provided with a vacuum pumping pipe joint and a vent pipe joint, the vacuum pumping pipe joint is externally connected with a vacuum pump to pump air in the reaction vessel, and the vent pipe joint is externally connected with an air pump to pump protective gas into the reaction vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022987831.6U CN214263894U (en) | 2020-12-10 | 2020-12-10 | Gradient ingot casting device |
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| CN117969218A (en) * | 2024-04-01 | 2024-05-03 | 烟台大学 | Device and method for preparing high-temperature alloy rare earth element gradient segregation sample |
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