Al-Sr-Ti-B alloy casting equipment and casting process

Abstract

The invention relates to the technical field of alloy casting equipment, and discloses Al-Sr-Ti-B alloy casting equipment and a casting technology.The casting equipment comprises an equipment table, a bearing frame is fixedly installed in the equipment table, a heat preservation tank is fixedly installed at the top of the equipment table, and an alloy melt is stored in the heat preservation tank. When the alloy melt flows out of the sprue gate, the sprue gate does reciprocating motion, rotation of the first conveying pipe enables the sprue gate to do eccentric rotation on the basis of movement, superposition of the two kinds of movement enables the alloy melt to form a spiral reciprocating motion track after flowing out of the sprue gate, and then the alloy melt is subjected to spiral reciprocating motion in cooperation with gradual descending of the mold. According to the casting device, the pouring gate is arranged in the mold, so that the liquid level of alloy melt in the mold always has a constant distance from the pouring gate, the casting track of the alloy melt forms a track similar to spiral rising and reciprocating motion, the casting path is beneficial to more uniform distribution of the alloy melt in the mold, and the risks of gaps, bubbles and uneven density are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of alloy casting equipment, and in particular to Al-Sr-Ti-B alloy casting equipment and a casting process. Background Art

[0002] Al-Sr-Ti-B alloy is an advanced lightweight metal material composed of aluminum (Al), strontium (Sr), titanium (Ti) and boron (B). The development of this type of alloy aims to solve the limitations of traditional aluminum alloys in strength, plasticity, heat resistance, etc. By precisely adding trace amounts of Sr, Ti and B elements, the microstructure of the aluminum matrix is ​​optimized to obtain better comprehensive performance. Its production process includes three major steps: pre-melting alloy elements, refinement treatment and casting molding.

[0003] The alloy melt has a high gas solubility in the molten state. As the temperature decreases, the solubility decreases, causing excess gas to precipitate in the form of bubbles. Therefore, in the current casting process, the alloy melt is often stored in an insulated storage tank and injected into the mold through a fixed-position delivery pipe. However, since the delivery pipe is fixed and usually higher than the mold, the alloy melt will violently impact the mold bottom plate during the initial injection, which not only increases the number of bubbles and inclusions in the melt, but also causes the subsequently injected melt to be concentrated at one point, resulting in the lower layer of bubbles being difficult to discharge, and bubbles and impurities are easily entrained, affecting the molding quality. At the same time, the fixed casting position also hinders the effective dissipation of heat. Based on this, the present invention purposely provides an Al-Sr-Ti-B alloy casting device and a casting process that can reduce bubbles and inclusions generated when casting the alloy melt through a reasonable casting trajectory. Summary of the invention

[0004] The purpose of the present invention is to provide an Al-Sr-Ti-B alloy casting device and a casting process to solve the technical problems in the prior art in view of the shortcomings of the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions: An Al-Sr-Ti-B alloy casting device, comprising: An equipment table, in which a bearing frame is fixedly installed, and a heat preservation tank is fixedly installed on the top, wherein the heat preservation tank stores alloy melt, and a reciprocating component and a rotating component are arranged in the bearing frame; A first delivery pipe is slidably disposed in the carrier, and an input end thereof is connected to the heat preservation tank through a hose, the first delivery pipe is rotatably connected to the hose, and the two are dynamically sealed, an output end of the first delivery pipe is connected to a second delivery pipe, the second delivery pipe is coaxially arranged with the first delivery pipe, and a pouring port is provided at the bottom thereof, the pouring port is eccentrically arranged, when the reciprocating assembly is started, it drives the first delivery pipe to reciprocate, and at the same time the reciprocating assembly drives the first delivery pipe to rotate through the rotating assembly; and A lifting frame is slidably installed in the equipment table and driven by a driving source to perform lifting motion. The lifting frame is located below the carrier frame, on which a mold is placed, and a transmission assembly for controlling the start of the reciprocating assembly is arranged. When the driving source drives the lifting frame to rise to the highest point, the pouring port is close to the bottom plate of the mold. When the driving source drives the lifting frame to descend, the lifting frame controls the start of the reciprocating assembly through the transmission assembly. The reciprocating assembly includes a reciprocating screw and a moving plate, wherein the reciprocating screw is rotatably mounted in the carrier frame, and the moving plate is slidably mounted in the carrier frame, is threadedly connected to the reciprocating screw, and is sleeved on the first conveying pipe; The rotating assembly comprises a first gear and a horizontal rack plate, wherein the first gear is coaxially fixedly mounted on the outer circumferential surface of the first conveying pipe, and the horizontal rack plate is fixedly mounted in the bearing frame and meshes with the first gear; The transmission assembly includes a second gear, a transmission wheel, a vertical rack plate and a ratchet assembly. The second gear and the transmission wheel are both rotatably mounted on the carrier frame, the two are coaxially arranged, and the two are transmission connected by the ratchet assembly. The transmission wheel is transmission connected to the reciprocating screw through a synchronous belt, and the vertical rack plate is fixedly mounted on the lifting frame, and it is meshed with the second gear.

[0006] As a further solution of the present invention: the ratchet assembly includes an inner ratchet and a pawl, the inner ratchet is coaxially fixedly connected to the inner wall of the second gear, a plurality of pawls are circumferentially arranged around the transmission wheel, and the pawls are rotatably mounted on the transmission wheel, and the pawls cooperate with the inner ratchet.

[0007] As a further solution of the present invention: the radius of the transmission wheel is greater than the radius of the reciprocating screw.

[0008] As a further solution of the present invention: a vibration component is arranged at the bottom of the equipment table, and when the driving source drives the lifting frame to descend to the lowest point, the bottom of the mold fits with the vibration component.

[0009] As a further solution of the present invention: a plurality of equally spaced conveying rollers are rotatably installed at the bottom of the equipment table, two adjacent conveying rollers are connected by a transmission belt, one conveying roller is driven to rotate by a first output source, two symmetrically arranged grooves are provided at the bottom of the equipment table, a telescopic frame is slidably installed in the grooves, the telescopic frame is driven to rise and fall by a second output source, and a plurality of equally spaced round rollers are rotatably installed thereon, a fixed table is fixedly installed at the bottom of the equipment table, a push plate is slidably installed on the fixed table, and the push plate is driven to rise and fall by a third output source.

[0010] As a further solution of the present invention: the second conveying pipe is divided into an upper chamber and a lower chamber by a partition, the partition is fixedly installed on the inner wall of the second conveying pipe, and a through hole is opened on it, the upper chamber is located above the lower chamber, it is connected with the first conveying pipe, and it is connected with the lower chamber through the through hole, the lower chamber is connected with the pouring gate, and the axis of the through hole and the axis of the pouring gate are symmetrical about the axis of the first conveying pipe.

[0011] A casting process of an Al-Sr-Ti-B alloy casting device, the process is applied to the Al-Sr-Ti-B alloy casting device as described above, the process comprises the following steps: Step S1: First, high-purity aluminum, strontium, titanium and boron compounds are selected as raw materials, the raw materials are melted and mixed and stirred, and after the reaction is sufficient, the alloy melt after refinement treatment is injected into the insulation tank; Step S2: driving the lifting frame to descend to the lowest position through the driving source, placing the mold on the lifting frame, and then driving the lifting frame to rise to the highest position through the driving source, at which time the pouring port is close to the bottom plate of the mold; Step S3: Then, the alloy melt in the heat preservation tank is injected into the mold through the hose, the first delivery pipe, the second delivery pipe and the pouring port in sequence, and at the same time, the driving source drives the lifting frame to descend, and when the lifting frame descends, the transmission assembly controls the reciprocating assembly to start; Step S4: the reciprocating assembly drives the first conveying pipe to reciprocate on the carrier, and the reciprocating assembly drives the first conveying pipe to rotate through the rotating assembly, so that the alloy melt is spirally raised and reciprocatingly injected into the mold; Step S5: After the casting is completed, the driving source drives the lifting frame to descend to the lowest point, the mold after the casting is completed can be removed and replaced with a new mold, and a new round of casting operation can be started.

[0012] Beneficial effects of the present invention: 1. In the present invention, an eccentrically arranged pouring port is provided on the second conveying pipe. When the first conveying pipe reciprocates, the pouring port also reciprocates, and the rotation of the first conveying pipe causes the pouring port to rotate eccentrically on the basis of movement. The superposition of these two movements causes the alloy melt to form a spiral reciprocating trajectory after flowing out of the pouring port. Combined with the gradual descent of the mold, the alloy melt liquid level in the mold is always at a constant distance from the pouring port, so that the casting trajectory of the alloy melt forms a spiral ascending and reciprocating trajectory. Such a casting path helps the alloy melt to be more evenly distributed inside the mold, reducing the risks of voids, bubbles and uneven density, and the spiral casting can effectively eliminate the violent turbulence caused by direct casting and avoid local overheating problems; 2. In the present invention, through the cooperation of the inner ratchet and the pawl, the reciprocating assembly is activated only when the lifting frame descends, driving the first conveying tube to reciprocate on the carrier, and the reciprocating assembly drives the first conveying tube to rotate by the rotating assembly, and the reciprocating assembly is not activated when the lifting frame rises, thereby avoiding meaningless movement of the first conveying tube; 3. In the present invention, by adding a partition in the second conveying pipe, the alloy melt is injected into the upper cavity through the first conveying pipe, and then enters the lower cavity through the through hole. Because the through hole and the pouring gate are distributed on both sides of the axis of the first conveying pipe, the alloy melt entering the lower cavity will first fill the lower cavity, and then flow into the pouring gate from all sides, and finally be injected into the mold, avoiding the problem of inconsistent discharge speed of the pouring gate caused by partial overlap between the pouring gate and the first conveying pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 Side view structural diagram; Figure 3 It is a structural schematic diagram of the carrier frame in the present invention; Figure 4 It is a schematic diagram of the structure of the rotating assembly in the present invention; Figure 5 It is a structural schematic diagram of the mold in the present invention in a state of being ready for casting; Figure 6 The present invention Figure 5 The structural diagram of the middle mold section; Figure 7 It is a structural schematic diagram of the mold in the present invention in the state of being moved downward during casting; Figure 8 The present invention Figure 7 The structural diagram of the middle mold section; Fig. 9 It is a diagram showing the cooperation between the mold and the vibration assembly in the present invention; Fig.10 It is a schematic diagram of mold blanking in the present invention; Fig.11 It is a schematic diagram of the cross-sectional structure of the second delivery pipe in the present invention; Fig.12 It is a schematic structural diagram of the ratchet assembly in the present invention.

[0015] In the figure: 1. equipment table; 2. lifting frame; 3. insulation tank; 4. bearing frame; 5. first conveying pipe; 6. second conveying pipe; 7. pouring gate; 8. hose; 9. reciprocating assembly; 901. reciprocating screw rod; 902. moving plate; 10. rotating assembly; 1001. first gear; 1002. horizontal rack plate; 11. transmission assembly; 1101. second gear; 1102. transmission wheel; 1103. synchronous belt; 1104. vertical rack plate; 12. ratchet assembly; 1201. inner ratchet; 1202. pawl; 13. vibration assembly; 14. groove; 15. telescopic frame; 16. round roller; 17. fixed table; 18. push plate; 19. conveying roller; 20. mold; 21. partition; 22. through hole; 23. upper cavity; 24. lower cavity. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 12 As shown, the present invention is an Al-Sr-Ti-B alloy casting device, comprising: An equipment platform 1, in which a carrier frame 4 is fixedly installed, and a heat preservation tank 3 is fixedly installed on the top thereof, wherein the heat preservation tank 3 stores alloy melt, and a reciprocating component 9 and a rotating component 10 are arranged in the carrier frame 4; The first delivery pipe 5 is slidably disposed in the carrier 4, and its input end is connected to the insulation tank 3 through a hose 8. The first delivery pipe 5 is rotatably connected to the hose 8, and the two are dynamically sealed. The output end of the first delivery pipe 5 is connected to the second delivery pipe 6. The second delivery pipe 6 is coaxially arranged with the first delivery pipe 5, and a pouring port 7 is opened at the bottom. The pouring port 7 is eccentrically arranged. When the reciprocating component 9 is started, it drives the first delivery pipe 5 to reciprocate. At the same time, the reciprocating component 9 drives the first delivery pipe 5 to rotate through the rotating component 10; and The lifting frame 2 is slidably installed in the equipment table 1, and is driven by a driving source to perform lifting movement. The lifting frame 2 is located below the carrier frame 4, on which a mold 20 is placed, and a transmission component 11 for controlling the start of the reciprocating component 9 is arranged. When the driving source drives the lifting frame 2 to rise to the highest point, the pouring port 7 is close to the bottom plate of the mold 20. When the driving source drives the lifting frame 2 to descend, the lifting frame 2 controls the start of the reciprocating component 9 through the transmission component 11.

[0018] In one case of this embodiment, the driving source may be an electric cylinder, an electric telescopic rod or other components, or other mechanisms capable of achieving lifting motion, which is not specifically limited in this embodiment.

[0019] The working principle of the present invention is as follows: firstly, alloy elements are pre-melted, and high-purity aluminum Al, strontium Sr, titanium Ti and boron B compounds such as potassium fluoroborate are mainly selected as raw materials and pre-melted, stirred and heat-insulated to make a preliminary chemical reaction between the elements to form a preliminary alloy phase. Then, a refiner is added to the pre-melted alloy, stirred again and heat-insulated, and finally the refined alloy melt is injected into the heat-insulating tank 3, that is, the preparation of the raw materials is completed, and then casting can be performed. The specific operation is as follows: First, Fig. 9 As shown, the lifting frame 2 is driven by the driving source to descend to the lowest position, and the mold 20 is placed on the lifting frame 2, and then Figure 5 and Figure 6 As shown, the driving source drives the lifting frame 2 to rise to the highest point. At this time, the pouring port 7 is close to the bottom plate of the mold 20. At this time, the alloy melt in the insulation tank 3 can be injected into the mold 20 through the hose 8, the first conveying pipe 5, the second conveying pipe 6 and the pouring port 7 in sequence, so as to avoid the problem that the pouring port 7 is too far away from the bottom plate of the mold 20 at the beginning of casting, resulting in excessive casting impact force. At the same time, the driving source drives the lifting frame 2 to drive the mold 20 to descend, and when the lifting frame 2 descends, the transmission component 11 is used to control the reciprocating component 9 to start, and the reciprocating component 9 drives the first conveying pipe 5 to reciprocate on the carrier 4. At the same time, the reciprocating component 9 drives the first conveying pipe 5 to rotate through the rotating component 10, and the pouring port 7 is eccentrically arranged at On the second conveying pipe 6, when the first conveying pipe 5 reciprocates, the pouring port 7 also reciprocates, and the rotation of the first conveying pipe 5 causes the pouring port 7 to rotate eccentrically on the basis of movement. The superposition of these two movements causes the alloy melt to form a spiral reciprocating trajectory after flowing out of the pouring port 7. Combined with the gradual descent of the mold 20, the casting trajectory of the alloy melt forms a spiral ascending and reciprocating trajectory. Such a casting path helps the alloy melt to be more evenly distributed inside the mold 20, reducing the risks of voids, bubbles and uneven density, and the spiral casting can effectively eliminate the violent turbulence caused by direct casting and avoid local overheating problems. The above process is as follows Figure 7 and Figure 8 As shown, until the lifting frame 2 descends to the lowest position again, the alloy melt casting is completed, and the lifting frame 2 is at the lowest position, and a new mold 20 can be replaced for a new round of casting.

[0020] like Figure 1-Figure 4 As shown, as a preferred embodiment of the present invention, the reciprocating assembly 9 includes a reciprocating screw 901 and a movable plate 902, the reciprocating screw 901 is rotatably installed in the supporting frame 4, the movable plate 902 is slidably installed in the supporting frame 4, it is threadedly connected to the reciprocating screw 901, and it is sleeved on the first conveying pipe 5.

[0021] In actual application of this embodiment, since the reciprocating screw 901 and the movable plate 902 are threadedly connected, the rotation of the reciprocating screw 901 can drive the movable plate 902 to move back and forth on the supporting frame 4, and the movable plate 902 will drive the first conveying pipe 5 to move together, so that the casting point of the pouring port 7 in the mold 20 can move back and forth, avoiding the problem of easy accumulation of thermal stress and difficulty in discharging bubbles due to the fixed injection point of the alloy melt during casting.

[0022] like Figure 1-Figure 4 As shown, as a preferred embodiment of the present invention, the rotating assembly 10 includes a first gear 1001 and a horizontal rack plate 1002, the first gear 1001 is coaxially fixedly installed on the outer cylindrical surface of the first conveying pipe 5, and the horizontal rack plate 1002 is fixedly installed in the supporting frame 4, and it is meshed with the first gear 1001.

[0023] In actual application of this embodiment, when the movable plate 902 drives the first conveying tube 5 to move back and forth, the first gear 1001 is engaged with the horizontal rack plate 1002, and the movable plate 902 is sleeved on the first conveying tube 5. Therefore, when the first conveying tube 5 moves, the first gear 1001 will rotate under the action of the horizontal rack plate 1002, and can achieve immediate rotation while achieving horizontal movement, thereby expanding the coverage of the pouring port 7.

[0024] like Figure 1-Figure 4 As shown, as a preferred embodiment of the present invention, the transmission assembly 11 includes a second gear 1101, a transmission wheel 1102, a vertical rack plate 1104 and a ratchet assembly 12. The second gear 1101 and the transmission wheel 1102 are both rotatably mounted on the carrier frame 4, the two are coaxially arranged, and the two are transmission connected by the ratchet assembly 12. The transmission wheel 1102 is transmission connected to the reciprocating screw 901 through a synchronous belt 1103, and the vertical rack plate 1104 is fixedly mounted on the lifting frame 2, and it is meshed with the second gear 1101.

[0025] In practical application, if Figure 1Taking the example shown, at this time, the second gear 1101 is meshed with the vertical rack plate 1104. When the lifting frame 2 drives the mold 20 to descend, the vertical rack plate 1104 will also descend, thereby driving the second gear 1101 to rotate, and the second gear 1101 will drive the transmission wheel 1102 to rotate through the ratchet assembly 12, and the transmission wheel 1102 drives the reciprocating screw 901 to rotate through the synchronous belt 1103, thereby driving the first conveying pipe 5 to reciprocate. This linkage ensures that the first conveying pipe 5 is immediately driven to move when the mold 20 descends, so that the position of the pouring port 7 injecting the alloy melt is immediately changed to prevent excessive accumulation at one point.

[0026] like Figure 4-Figure 12 As shown, as a preferred embodiment of the present invention, the ratchet assembly 12 includes an inner ratchet 1201 and a pawl 1202, the inner ratchet 1201 is coaxially fixedly connected to the inner wall of the second gear 1101, a plurality of pawls 1202 are circumferentially arranged around the transmission wheel 1102, and the pawls 1202 are rotatably mounted on the transmission wheel 1102, and the pawls 1202 cooperate with the inner ratchet 1201.

[0027] In actual application of this embodiment, when the lifting frame 2 descends, the second gear 1101 is driven to rotate by the vertical rack plate 1104. Fig.12 Taking the example shown, the second gear 1101 rotates counterclockwise, and the pawl 1202 meshes with the inner ratchet 1201, thereby driving the transmission wheel 1102 to rotate counterclockwise synchronously. When the lifting frame 2 rises, the second gear 1101 is driven to rotate clockwise through the vertical rack plate 1104. At this time, the pawl 1202 and the inner ratchet 1201 slide together and cannot drive the transmission wheel 1102 to rotate. Therefore, when the lifting frame 2 drives the mold 20 to rise, the reciprocating component 9 will not be started. At this time, the position of the first conveying tube 5 is constant, which can avoid the problem of meaningless movement of the first conveying tube 5 when the mold 20 rises.

[0028] like Figure 1-Figure 2 As shown, as a preferred embodiment of the present invention, the radius of the transmission wheel 1102 is greater than the radius of the reciprocating screw 901.

[0029] In actual application of this embodiment, due to the characteristics of the length and height of the mold 20, the descending stroke of the lifting frame 2 is short, and the reciprocating screw 901 needs to rotate a sufficient number of times to drive the movable plate 902 to move back and forth on the supporting frame 4. Under the premise that the descending stroke of the vertical rack plate 1104 is short, it can only drive the second gear 1101 and the transmission wheel 1102 to rotate a small number of times. Therefore, the radius of the transmission wheel 1102 is set to be larger than the radius of the reciprocating screw 901, so that the transmission wheel 1102 can drive the reciprocating screw 901 to rotate more times, ensuring that the movable plate 902 can move back and forth on the supporting frame 4.

[0030] like Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, a vibration component 13 is provided at the bottom of the equipment table 1. When the driving source drives the lifting frame 2 to descend to the lowest point, the bottom of the mold 20 fits with the vibration component 13.

[0031] In one case of this embodiment, it should be noted that the vibration assembly 13 described in the present invention is prior art, and the present invention does not improve them. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, which does not affect the integrity of the present invention.

[0032] In actual application of this embodiment, the bottom of the mold 20 is vibrated by the vibration component 13, and the vibration is transmitted to the alloy melt in the mold 20 to promote the discharge of bubbles inside the mold 20.

[0033] like Figure 9-10 As shown, as a preferred embodiment of the present invention, a plurality of equally spaced conveying rollers 19 are rotatably installed at the bottom of the equipment platform 1, two adjacent conveying rollers 19 are connected by a transmission belt, and one conveying roller 19 is driven to rotate by a first output source, and two symmetrically arranged grooves 14 are provided at the bottom of the equipment platform 1, and a telescopic frame 15 is slidably installed in the groove 14, and the telescopic frame 15 is driven to rise and fall by a second output source, and a plurality of equally spaced round rollers 16 are rotatably installed thereon, and a fixed platform 17 is fixedly installed at the bottom of the equipment platform 1, and a push plate 18 is slidably installed on the fixed platform 17, and the push plate 18 is driven to rise and fall by a third output source.

[0034] In practical application, if Fig. 9 and Fig.10 As shown in the figure, when the bottom of the mold 20 is in contact with the vibration component 13, its bottom is located above the groove 14. When the mold 20 is unloaded, the first output source drives the conveying roller 19 to rotate and the second output source drives the telescopic frame 15 to rise. At this time, the round roller 16 abuts against the bottom of the mold 20 and pushes the mold 20 to rise, so that the round roller 16 and the conveying roller 19 are at the same horizontal height. Then the third driving source drives the push plate 18 to move, thereby pushing the mold 20 from the round roller 16 to the conveying roller 19. At this time, the conveying roller 19 smoothly conveys the mold 20 to unload. This function can also be used for loading the mold 20. The output source only needs to drive the conveying roller 19 to rotate in the opposite direction to convey the mold 20 on the conveying roller 19 to the round roller 16. Then, the position is manually corrected. At this time, the lifting frame 2 rises to drive the mold 20 to rise.

[0035] like Fig.11As shown, as a preferred embodiment of the present invention, the second delivery pipe 6 is divided into an upper chamber 23 and a lower chamber 24 by a partition 21, the partition 21 is fixedly installed on the inner wall of the second delivery pipe 6, and a through hole 22 is opened thereon, the upper chamber 23 is located above the lower chamber 24, it is connected with the first delivery pipe 5, and it is connected with the lower chamber 24 through the through hole 22, the lower chamber 24 is connected with the pouring gate 7, and the axis of the through hole 22 and the axis of the pouring gate 7 are symmetrical about the axis of the first delivery pipe 5.

[0036] In practical application, if Fig.11 As shown in the figure as an example, if there is no partition 21 blocking the second conveying pipe 6, since the pouring port 7 has a partial overlapping area with the first conveying pipe 5, after the alloy melt flows from the first conveying pipe 5 to the second conveying pipe 6, the alloy melt flow rate in the overlapping area of ​​the pouring port 7 and the first conveying pipe 5 is significantly faster, resulting in inconsistent discharge speed of the pouring port 7, and the problem of increased bubbles is prone to occur during casting. With the setting of the partition 21, the alloy melt will be injected into the upper cavity 23 through the first conveying pipe 5, and then enter the lower cavity 24 through the through hole 22. Because the through hole 22 and the pouring port 7 are distributed on both sides of the axis of the first conveying pipe 5, the alloy melt entering the lower cavity 24 will first fill the lower cavity 24, and then flow into the pouring port 7 from all sides, and finally be injected into the mold 20, thereby avoiding the problem of inconsistent discharge speed of the pouring port 7 due to partial overlap between the pouring port 7 and the first conveying pipe 5.

[0037] See also Figure 1-Figure 12 As shown, the present invention is a casting process of an Al-Sr-Ti-B alloy casting device, and the process is applied to an Al-Sr-Ti-B alloy casting device as described in the above embodiment, and the process includes the following steps: Step S1: Firstly, high-purity aluminum, strontium, titanium and boron compounds are selected as raw materials, the raw materials are melted and mixed and stirred, and after the reaction is sufficient, the alloy melt after refinement treatment is injected into the insulation tank 3; Step S2: The driving source drives the lifting frame 2 to descend to the lowest position, and the mold 20 is placed on the lifting frame 2. Then, the driving source drives the lifting frame 2 to rise to the highest position, and at this time, the pouring port 7 is close to the bottom plate of the mold 20; Step S3: Then, the alloy melt in the heat preservation tank 3 is injected into the mold 20 through the hose 8, the first delivery pipe 5, the second delivery pipe 6 and the pouring port 7 in sequence, and at the same time, the driving source drives the lifting frame 2 to descend, and when the lifting frame 2 descends, the transmission assembly 11 controls the reciprocating assembly 9 to start; Step S4: the reciprocating assembly 9 drives the first conveying pipe 5 to reciprocate on the carrier 4, and at the same time, the reciprocating assembly 9 drives the first conveying pipe 5 to rotate through the rotating assembly 10, so that the alloy melt is spirally raised and reciprocatingly injected into the mold 20; Step S5: After the casting is completed, the driving source drives the lifting frame 2 to descend to the lowest point, and the mold 20 after the casting is completed can be removed and replaced with a new mold 20, and a new round of casting operation can be started.

[0038] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An Al-Sr-Ti-B alloy casting device, characterized in that: include: An equipment platform (1) having a support frame (4) fixedly mounted therein and a heat preservation tank (3) fixedly mounted on the top thereof, wherein alloy melt is stored in the heat preservation tank (3), and a reciprocating assembly (9) and a rotating assembly (10) are arranged in the support frame (4); A first delivery pipe (5) is slidably arranged in the support frame (4), and its input end is connected to the heat preservation tank (3) through a hose (8). The first delivery pipe (5) and the hose (8) are rotatably connected, and the two are dynamically sealed. The output end of the first delivery pipe (5) is connected to the second delivery pipe (6). The second delivery pipe (6) and the first delivery pipe (5) are coaxially arranged, and a pouring port (7) is provided at the bottom. The pouring port (7) is eccentrically arranged. When the reciprocating component (9) is started, it drives the first delivery pipe (5) to reciprocate, and at the same time, the reciprocating component (9) drives the first delivery pipe (5) to rotate through the rotating component (10); and A lifting frame (2) is slidably mounted in the equipment platform (1) and is driven by a driving source to perform lifting motion. The lifting frame (2) is located below the carrier frame (4) and has a mold (20) placed thereon. A transmission component (11) for controlling the start of a reciprocating component (9) is provided thereon. When the driving source drives the lifting frame (2) to rise to the highest point, the pouring port (7) is close to the bottom plate of the mold (20). When the driving source drives the lifting frame (2) to descend, the lifting frame (2) controls the start of the reciprocating component (9) through the transmission component (11); The reciprocating assembly (9) comprises a reciprocating screw rod (901) and a movable plate (902), wherein the reciprocating screw rod (901) is rotatably mounted in the support frame (4), and the movable plate (902) is slidably mounted in the support frame (4), is threadedly connected to the reciprocating screw rod (901), and is sleeved on the first conveying pipe (5); The rotating assembly (10) comprises a first gear (1001) and a horizontal rack plate (1002), wherein the first gear (1001) is coaxially fixedly mounted on the outer circumferential surface of the first conveying pipe (5), and the horizontal rack plate (1002) is fixedly mounted in the supporting frame (4) and meshes with the first gear (1001); The transmission assembly (11) comprises a second gear (1101), a transmission wheel (1102), a vertical rack plate (1104) and a ratchet assembly (12); the second gear (1101) and the transmission wheel (1102) are both rotatably mounted on the support frame (4), the two are coaxially arranged, and the two are transmission-connected via the ratchet assembly (12); the transmission wheel (1102) is transmission-connected to a reciprocating screw rod (901) via a synchronous belt (1103); the vertical rack plate (1104) is fixedly mounted on the lifting frame (2) and meshes with the second gear (1101).

2. The Al-Sr-Ti-B alloy casting equipment according to claim 1, characterized in that: The ratchet assembly (12) comprises an inner ratchet (1201) and a pawl (1202); the inner ratchet (1201) is coaxially fixedly connected to the inner wall of the second gear (1101); a plurality of pawls (1202) are circumferentially arranged around the transmission wheel (1102); the pawls (1202) are rotatably mounted on the transmission wheel (1102); and the pawls (1202) cooperate with the inner ratchet (1201).

3. The Al-Sr-Ti-B alloy casting equipment according to claim 1, characterized in that: The radius of the transmission wheel (1102) is greater than the radius of the reciprocating screw rod (901).

4. The Al-Sr-Ti-B alloy casting equipment according to claim 1, characterized in that: A vibration component (13) is provided at the bottom of the equipment platform (1); when the driving source drives the lifting frame (2) to descend to the lowest point, the bottom of the mold (20) fits the vibration component (13).

5. The Al-Sr-Ti-B alloy casting equipment according to claim 1, characterized in that: The bottom of the equipment platform (1) is rotatably mounted with a plurality of equally spaced conveying rollers (19), two adjacent conveying rollers (19) are connected by a transmission belt, and one conveying roller (19) is driven to rotate by a first output source. The bottom of the equipment platform (1) is provided with two symmetrically arranged grooves (14), a telescopic frame (15) is slidably mounted in the grooves (14), the telescopic frame (15) is driven to rise and fall by a second output source, and a plurality of equally spaced round rollers (16) are rotatably mounted on the telescopic frame. The bottom of the equipment platform (1) is fixedly mounted with a fixed platform (17), a push plate (18) is slidably mounted on the fixed platform (17), and the push plate (18) is driven to rise and fall by a third output source.

6. The Al-Sr-Ti-B alloy casting equipment according to claim 1, characterized in that: The second delivery pipe (6) is divided into an upper chamber (23) and a lower chamber (24) by a partition (21); the partition (21) is fixedly mounted on the inner wall of the second delivery pipe (6) and is provided with a through hole (22); the upper chamber (23) is located above the lower chamber (24) and is in communication with the first delivery pipe (5), and is in communication with the lower chamber (24) through the through hole (22); the lower chamber (24) is in communication with the pouring port (7), and the axis of the through hole (22) and the axis of the pouring port (7) are symmetrical about the axis of the first delivery pipe (5).

7. A casting process of Al-Sr-Ti-B alloy casting equipment, characterized in that: The process is applied to an Al-Sr-Ti-B alloy casting device as described in any one of claims 1 to 6, and the process comprises the following steps: Step S1: First, high-purity compounds of aluminum, strontium, titanium and boron are selected as raw materials, the raw materials are melted and mixed and stirred, and after the reaction is sufficient, the alloy melt after refinement treatment is injected into the insulation tank (3); Step S2: driving the lifting frame (2) to descend to the lowest position through the driving source, placing the mold (20) on the lifting frame (2), and then driving the lifting frame (2) to ascend to the highest position through the driving source, at which time the pouring port (7) is close to the bottom plate of the mold (20); Step S3: Subsequently, the alloy melt in the heat preservation tank (3) is injected into the mold (20) through the hose (8), the first delivery pipe (5), the second delivery pipe (6) and the pouring port (7) in sequence, and at the same time, the driving source drives the lifting frame (2) to descend, and when the lifting frame (2) descends, the transmission component (11) controls the reciprocating component (9) to start; Step S4: the reciprocating component (9) drives the first conveying pipe (5) to reciprocate on the support frame (4), and at the same time, the reciprocating component (9) drives the first conveying pipe (5) to rotate through the rotating component (10), so that the alloy melt is spirally raised and reciprocatingly injected into the mold (20); Step S5: After the casting is completed, the driving source drives the lifting frame (2) to descend to the lowest point, and the mold (20) after the casting is completed can be removed and replaced with a new mold (20), and a new round of casting operation can be started.

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