Aluminum-titanium-boron intermediate alloy and preparation method and application thereof
By improving the preparation method of aluminum-titanium boron intermediate alloy, the transmission spring joints and movable split shaft structure of the powder mixer are used for buffering, combined with the distance limit plate page and customized pressure relief valve, the problems of inaccurate element proportion control and high wear and noise of the powder chamber are solved, and the stability and quietness of the equipment are achieved.
Patent Information
- Application Number
- CN202510512924.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-07-08
AI Technical Summary
During the preparation of traditional aluminum-titanium-boron intermediate alloys, the element proportion control is not accurate, the powder chamber drive structure is prone to wear and noisy, and the powder chamber shakes severely.
The powder mixer is used to mix and press aluminum, titanium and boron raw materials, combined with the worm gear and worm self-locking structure, and buffer through the transmission spring joints and movable split shafts, set up the distance plate page and a customized pressure relief valve to stabilize the flip of the powder chamber, and use positioning sensors to ensure the position of the chamber.
It improves the accuracy of elemental component ratio, reduces wear and noise of the powder bin, ensures the stability and quietness of the equipment, and avoids the shaking of the powder bin during feeding and unloading.
Smart Images
Figure CN120272766A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of alloy preparation, and specifically to an aluminum-titanium-boron master alloy and its preparation method and application. Background Art
[0002] The aluminum-titanium-boron master alloy is a multi-element alloy additive used in the production of aluminum alloys. It is composed of elements such as aluminum (Al), titanium (Ti), and boron (B). The compounds formed by titanium and boron with aluminum can serve as heterogeneous crystal nuclei, increasing the number of crystal nuclei and making the grains of the aluminum alloy refined during solidification, significantly improving the mechanical properties such as strength, hardness, toughness, and ductility of the aluminum alloy. During the preparation process of the aluminum-titanium-boron master alloy, when prepared by smelting in traditional technology, the control of the element ratio and the control of the element distribution uniformity are not precise enough; when prepared by powder metallurgy, it is necessary to carry out a mixing treatment through a powder mixer. In the traditional powder mixer, the powder bin is driven by a worm and worm gear, and the self-locking ability of the worm and worm gear is utilized to achieve multi-angle self-locking of the powder bin. However, in the worm and worm gear drive structure, when the powder bin is suddenly stopped and rotated forward and backward, since the worm transmission component directly stops rotating, and the powder bin contains a large amount of metal powder with a large mass, driving the worm gear will generate a large inertial impact, making the components more prone to wear, and the noise and vibration during the working process are greater. Summary of the Invention
[0003] The purpose of the present invention is to provide an aluminum-titanium-boron master alloy and its preparation method and application to solve the problems raised in the above background art.
[0004] To achieve the above purpose, the present invention provides the following technical solution: A preparation method of an aluminum-titanium-boron master alloy, the preparation method comprising the following steps: Step 1: Grind the aluminum, titanium, and boron raw materials into powders. The particle size of the aluminum powder is between 50 and 200 mesh, and the particle sizes of the titanium powder and boron powder are between 100 and 300 mesh; Step 2: According to a certain alloy composition ratio, fully mix the three powders evenly in a powder mixer, and then put the mixed powder into a mold and press it under a certain pressure to form a green body with the required shape. The pressing pressure is between 250 and 500 MPa; Step 3: Put the green body into a high-temperature furnace for sintering. The sintering temperature is between 600 and 1000 °C, the sintering atmosphere is an inert gas, and keep it warm for 2 to 4 hours to obtain the aluminum-titanium-boron master alloy.
[0005] In step 2, the powder mixer specifically includes a powder bin, and trapezoidal side frames, a worm gear part, and a worm part provided on both sides of the powder bin for supporting the powder bin; The worm gear part and the worm part are meshed with each other and have a self-locking ability. The worm part drives the worm gear part to rotate, so that the powder bin tumbles to mix the internal powder; The powder mixer further includes a movable split shaft, a transmission spring section, and a driving main shaft. The worm part is coaxially and fixedly connected to the movable split shaft. The transmission spring section is arranged between the movable split shaft and the driving main shaft, and the transmission spring section and the driving main shaft are coaxially and fixedly connected. When the transmission spring section rotates, it can drive the movable split shaft to rotate, and the movable split shaft can elastically expand and contract along the axial direction relative to the transmission spring section.
[0006] The transmission spring section is provided with a hexagonal notch. A hexagonal shaft is coaxially and fixedly arranged at the lower part of the movable split shaft. The hexagonal shaft passes through the hexagonal notch and is in limit fit with the hexagonal notch. When the transmission spring section rotates, the hexagonal shaft is limited by the hexagonal notch, so that the movable split shaft rotates. An intermediate disc is arranged inside the transmission spring section. The lower end of the hexagonal shaft is fixedly installed with the intermediate disc. Centering springs are symmetrically arranged on the upper and lower parts of the intermediate disc. Due to the elastic pressure of the centering springs, the intermediate disc has an elastic tendency to be in the middle position of the transmission spring section.
[0007] A distance-limiting convex ring is fixedly arranged on the outside of the movable split shaft. Distance-limiting plate pages are symmetrically arranged on the upper and lower parts of the distance-limiting convex ring. The distance-limiting convex ring is limited up and down by the distance-limiting plate pages. A cam part is fixedly arranged on the driving main shaft. An extrusion air pump is arranged outside the cam part. When the driving main shaft rotates, the extrusion air pump generates positive-pressure gas through the cooperation of the cam part and the extrusion air pump. The distance between the upper and lower groups of distance-limiting plate pages increases through the positive-pressure gas. When the driving main shaft stops rotating, the distance between the upper and lower groups of distance-limiting plate pages decreases.
[0008] A slider end is fixedly arranged on the distance-limiting plate page. A chute vertical plate is fixedly arranged on the trapezoidal side frame. The slider end is slidably limited in the chute vertical plate. A bidirectional lead screw is inserted into the slider end. The bidirectional lead screw is in screw fit with the slider end. Two sets of threads with opposite spiral directions are arranged on the bidirectional lead screw. By rotating the bidirectional lead screw, the two groups of distance-limiting plate pages can be driven to move synchronously and in opposite directions.
[0009] An axial sleeve is fixedly arranged on the chute vertical plate. An axial snap ring is fixedly arranged on the bidirectional lead screw. The bidirectional lead screw is axially limited through the cooperation of the axial snap ring and the axial sleeve. A gear disc is fixedly arranged at the end of the bidirectional lead screw. A rack chute is fixedly arranged on the trapezoidal side frame. A switching rack is slidably limited in the rack chute. The switching rack meshes with the gear disc. The gear disc is driven to rotate forward and backward through the linear reciprocating motion of the switching rack.
[0010] An end connector is fixedly arranged outside the switching rack, and a cylinder part is fixedly arranged on the trapezoidal side frame. The cylinder part extends out after positive pressure gas is input and can elastically retract after losing the positive pressure gas. The telescopic shaft of the cylinder part is fixedly connected to the switching rack through the end connector; A customized pressure relief valve is communicated with the outside of the cylinder part. A gas input pipe is arranged on the customized pressure relief valve. The gas input pipe is communicated with the cylinder part through the customized pressure relief valve, and the other end of the gas input pipe is communicated with an extrusion air pump; A pressure relief hole is opened in the customized pressure relief valve. A sealing plug is arranged on one side of the pressure relief hole, and the pressure relief hole is blocked by the sealing plug. An annular plug is spirally installed in the customized pressure relief valve. A pressure spring is arranged between the annular plug and the sealing plug. Under the elastic pressure of the pressure spring, the sealing plug is in sealing contact with the pressure relief hole to achieve blocking. A reset flow hole is penetrated through the sealing plug, and the pressure relief hole is continuously communicated with the outside through the reset flow hole.
[0011] Positioning points are arranged on the powder bin, and a positioning sensor is arranged outside the powder bin. The position of the powder bin is detected by the cooperation of the positioning sensor and the positioning points, so that the top bin opening of the powder bin faces upward when the machine stops.
[0012] An aluminum-titanium-boron master alloy is prepared by the preparation method of the aluminum-titanium-boron master alloy, and the weight percentages are as follows: Titanium 4.2 - 5%, boron 0.5 - 0.8%, and the balance is aluminum.
[0013] The application of the aluminum-titanium-boron master alloy is to add the aluminum-titanium-boron master alloy during the melting process of aluminum alloy.
[0014] Compared with the prior art, the beneficial effects of the present invention are: In the preparation method of the aluminum-titanium-boron master alloy of the present invention, after the raw materials of aluminum, titanium, and boron are made into powders and pre-mixed by a powder mixer, and then pressed and sintered into shape, the accuracy of controlling the component ratio of the aluminum-titanium-boron master alloy can be improved; in the powder mixer of the present invention, through the cooperation of structures such as the transmission spring section and the movable split shaft, the flipping of the powder bin can be elastically buffered under working conditions such as the forward and reverse rotation and sudden stop of the powder bin, reducing the impact wear suffered when the worm gear part and the worm part are self-locked and matched, and at the same time reducing the impact noise and shaking generated by the equipment.
[0015] Through the cooperation of structures such as the set distance-limiting plate pages, customized pressure relief valves, and extrusion air pumps, the present invention can increase the distance between the distance-limiting plate pages during the process of driving the main shaft to rotate and drive the powder bin to flip, so that the powder bin has a higher buffer flipping stroke. After the driving main shaft stops, the distance-limiting plate pages automatically approach each other and axially lock the movable sub-shaft. At this time, the powder bin loses the buffer flipping stroke, thus ensuring the locking stability of the powder bin and avoiding the swinging and shaking of the powder bin during the feeding and discharging processes. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the powder mixer of the present invention.
[0017] Figure 2 is Figure 1 An enlarged schematic diagram of area A in
[0018] Figure 3 It is a schematic diagram of another angle of the overall structure of the powder mixer of the present invention.
[0019] Figure 4 is Figure 3 An enlarged schematic diagram of area B in
[0020] Figure 5 It is a three-dimensional semi-sectional schematic diagram of the powder mixer of the present invention.
[0021] Figure 6 is Figure 5 An enlarged schematic diagram of area C in
[0022] Figure 7 is Figure 5 An enlarged schematic diagram of area D in
[0023] Figure 8 It is a three-dimensional semi-sectional schematic diagram of the customized pressure relief valve of the present invention.
[0024] Figure 9 is Figure 8 An enlarged schematic diagram of area E in
[0025] In the figure: 1. Powder bin; 2. Trapezoidal side frame; 3. Worm gear part; 4. Worm part; 5. Movable spline shaft; 6. Drive spring section; 7. Drive main shaft; 601. Hexagonal notch; 602. Hexagonal shaft; 603. Intermediate disc; 604. Centering spring; 501. Distance limiting convex ring; 502. Distance limiting plate leaf; 503. Cam part; 504. Extrusion air pump; 505. Slider end; 506. Chute vertical plate; 507. Bi-directional lead screw; 508. Axial bushing; 509. Axial snap ring; 510. Gear disc; 511. Rack chute; 512. Switching rack; 513. End connector; 514. Cylinder part; 515. Customized pressure relief valve; 516. Gas inlet pipe; 517. Pressure relief hole; 518. Sealing plug; 519. Pressure spring; 520. Ring plug; 521. Reset flow hole; 101. Positioning point; 102. Positioning sensor; 201. Bin shaft support; 202. Bin body rotating shaft; 203. Through slot; 204. Power base; 205. Bevel gear module. Detailed implementation mode
[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.
[0027] Please refer to Figures 1 to 9 , the present invention provides a technical solution: a preparation method of aluminum-titanium-boron master alloy, and the preparation method includes the following steps: Step 1: Grind aluminum, titanium, and boron raw materials into powders. The particle size of the aluminum powder is between 50 and 200 meshes, and the particle sizes of the titanium powder and the boron powder are between 100 and 300 meshes; Step 2: According to a certain alloy composition ratio, fully mix the three powders in a powder mixer, and then put the mixed powder into a mold and press it under a certain pressure to form a green body with the required shape. The pressing pressure is between 250 and 500 MPa; Step 3: Put the green body into a high-temperature furnace for sintering. The sintering temperature is between 600 and 1000 °C, the sintering atmosphere is an inert gas, and keep it warm for 2 to 4 hours to prepare the aluminum-titanium-boron master alloy.
[0028] In step 2, the powder mixer specifically includes a powder bin 1, and trapezoidal side frames 2, a worm gear part 3, and a worm part 4 arranged on both sides of the powder bin 1 for supporting the powder bin 1; The worm gear part 3 and the worm part 4 are meshed with each other and have a self-locking ability. The worm gear part 3 is driven to rotate by the worm part 4, so that the powder bin 1 tumbles to mix the powder inside; the structure of the powder bin 1 is asFigure 1 As shown, it has an upper opening and is provided with a cover for closing the top of the powder bin 1. A discharge valve is provided at the bottom of the powder bin 1, and the discharge valve is normally closed. The powder mixer further includes a movable split shaft 5, a transmission spring section 6, and a driving main shaft 7. The worm part 4 is coaxially and fixedly connected to the movable split shaft 5. The transmission spring section 6 is arranged between the movable split shaft 5 and the driving main shaft 7, and the transmission spring section 6 and the driving main shaft 7 are coaxially and fixedly connected. When the transmission spring section 6 rotates, it can drive the movable split shaft 5 to rotate, and the movable split shaft 5 can elastically expand and contract along the axial direction relative to the transmission spring section 6.
[0029] A hexagonal notch 601 is formed on the transmission spring section 6. A hexagonal shaft 602 is coaxially and fixedly arranged at the lower part of the movable split shaft 5. The hexagonal shaft 602 passes through the hexagonal notch 601 and is in limit fit with the hexagonal notch 601. When the transmission spring section 6 rotates, the movable split shaft 5 is driven to rotate through the limit of the hexagonal shaft 602 by the hexagonal notch 601. An intermediate disc 603 is arranged inside the transmission spring section 6. The lower end of the hexagonal shaft 602 is fixedly installed with the intermediate disc 603. Centering springs 604 are symmetrically arranged on the upper and lower parts of the intermediate disc 603. Due to the elastic pressure of the centering springs 604, the intermediate disc 603 has an elastic tendency to be in the middle position of the transmission spring section 6.
[0030] A distance-limiting convex ring 501 is fixedly arranged on the outside of the movable split shaft 5. Distance-limiting plate pages 502 are symmetrically arranged on the upper and lower parts of the distance-limiting convex ring 501 to limit the up and down movement of the distance-limiting convex ring 501 through the distance-limiting plate pages 502. A cam part 503 is fixedly arranged on the driving main shaft 7. An extrusion air pump 504 is arranged outside the cam part 503. The extrusion air pump 504 is a piston pump, which consists of a piston cylinder block, a return spring, and two groups of one-way air valves. Through the intermittent extrusion of the cam part 503 and the cooperation of the return spring, the piston in the piston cylinder block reciprocates, and gas pumping is realized through the two groups of one-way air valves. The extrusion air pump 504 is a common structure in traditional air pump technology.
[0031] When the driving main shaft 7 rotates, through the cooperation of the cam part 503 and the extrusion air pump 504, the extrusion air pump 504 generates positive-pressure gas, and the distance between the upper and lower two groups of distance-limiting plate pages 502 is increased through the positive-pressure gas. When the driving main shaft 7 stops rotating, the distance between the upper and lower two groups of distance-limiting plate pages 502 is decreased.
[0032] A slider end 505 is fixedly arranged on the distance-limiting plate page 502. A chute vertical plate 506 is fixedly arranged on the trapezoidal side frame 2. The slider end 505 is arranged in the chute vertical plate 506 in a limited sliding manner. A bidirectional lead screw 507 is inserted into the slider end 505, and the bidirectional lead screw 507 is in screw fit with the slider end 505. The double - lead screw 507 is provided with two sets of threads with opposite helix directions. By rotating the double - lead screw 507, two sets of distance - limiting plate pages 502 can be driven to move synchronously and in opposite directions.
[0033] An axial retaining sleeve 508 is fixedly arranged on the chute vertical plate 506, and an axial retaining ring 509 is fixedly arranged on the double - lead screw 507. Through the cooperation of the axial retaining ring 509 and the axial retaining sleeve 508, the double - lead screw 507 is axially limited. A gear disc 510 is fixedly arranged at the end of the double - lead screw 507, a rack chute 511 is fixedly arranged on the trapezoidal side frame 2, a switching rack 512 is slidably limited in the rack chute 511, and the switching rack 512 meshes with the gear disc 510. By the linear reciprocating motion of the switching rack 512, the gear disc 510 is driven to rotate forward and backward.
[0034] An end connector 513 is fixedly arranged outside the switching rack 512, and a cylinder part 514 is fixedly arranged on the trapezoidal side frame 2. The cylinder part 514 extends after inputting positive - pressure gas and can elastically retract after losing positive - pressure gas. The inside of the cylinder part 514 includes the structure of a traditional cylinder and is provided with a spring. Through the elastic force of the spring, the cylinder part 514 can elastically reset after losing the drive of positive - pressure gas input.
[0035] The telescopic shaft of the cylinder part 514 is fixedly connected to the switching rack 512 through the end connector 513. An externally - connected customized pressure - relief valve 515 is arranged outside the cylinder part 514. A gas input pipe 516 is arranged on the customized pressure - relief valve 515. The gas input pipe 516 is connected to the cylinder part 514 through the customized pressure - relief valve 515, and the other end of the gas input pipe 516 is connected to the extrusion air pump 504. A pressure - relief hole 517 is opened in the customized pressure - relief valve 515. A sealing plug 518 is arranged on one side of the pressure - relief hole 517 to block the pressure - relief hole 517. An annular plug 520 is screwed into the customized pressure - relief valve 515. A pressure spring 519 is arranged between the annular plug 520 and the sealing plug 518. Under the elastic pressure of the pressure spring 519, the sealing plug 518 is in sealing contact with the pressure - relief hole 517 to achieve blocking. A reset flow - guiding hole 521 is penetrated through the sealing plug 518, and the pressure - relief hole 517 is continuously communicated with the outside through the reset flow - guiding hole 521.
[0036] A positioning point 101 is arranged on the powder bin 1, and a positioning sensor 102 is arranged outside the powder bin 1. By the cooperation of the positioning sensor 102 and the positioning point 101, the position of the powder bin 1 is detected so that the top hatch of the powder bin 1 faces upward when the machine stops. The positioning sensor 102 can adopt a laser transceiver, and the positioning point 101 can be a reflective patch. By the laser transceiver emitting laser and receiving the reflected laser of the reflective patch, the point - position detection is realized.
[0037] The preparation method of aluminum-titanium-boron master alloy prepares aluminum-titanium-boron master alloy, and the weight percentage is as follows: Titanium 4.5%, boron 0.8%, and the balance is aluminum.
[0038] Application of aluminum-titanium-boron master alloy: aluminum-titanium-boron master alloy is added during the aluminum alloy smelting process.
[0039] like Figure 2 As shown in , a bin shaft support 201 is fixedly provided on the upper part of the trapezoidal side frame 2, a bin body rotating shaft 202 is rotatably provided in the bin shaft support 201, the bin body rotating shaft 202 is fixedly installed with the powder bin 1, and the worm gear part 3 is fixed with the powder bin 1 through the bin body rotating shaft 202. A through slot 203 is provided on the trapezoidal side frame 2, and the switching rack 512 and the cylinder member 514 will pass through the through slot 203 when extending, so as to prevent the trapezoidal side frame 2 from blocking the movement of the switching rack 512.
[0040] like Figure 1 As shown in the figure, a power base 204 is provided at the bottom of the trapezoidal side frame 2, and a motor and control electrical components are provided inside the power base 204. A bevel gear module 205 is provided between the power base 204 and the driving spindle 7 for vertical transmission, and the driving spindle 7 is rotated through the power base 204.
[0041] After the powder mixer of the present invention completes the powder mixing operation, when the positioning sensor 102 detects the positioning point 101, the power base 204 controls the driving spindle 7 to stop immediately, so that the top opening of the powder bin 1 faces upward, which is convenient for adding materials or discharging materials from the bottom of the powder bin 1.
[0042] When the powder bin 1 stops suddenly as described above, or when the positive and negative directions are reversed during the flipping process, the worm part 4 stops or reverses directly, and the worm wheel part 3 is connected to the powder bin 1 in a transmission manner, so that the worm wheel part 3 has a large inertia, and the inertial impact acts on the worm part 4, exerting an axial impact force on the worm part 4. This makes the movable sub-shaft 5 and the hexagonal shaft 602 move axially, such as Figure 7 As shown in , when the hexagonal shaft 602 moves axially, the centering spring 604 can perform elastic buffering, thereby buffering and absorbing the impact force, so that the impact wear between the worm wheel part 3 and the worm part 4 of the mixer is smaller, and it is more silent and stable.
[0043] During the process of driving the main shaft 7 to rotate, the cam portion 503 is driven to rotate. The cam portion 503 intermittently presses the extrusion air pump 504, causing the extrusion air pump 504 to generate positive-pressure gas, which is input into the cylinder member 514 through the gas input pipe 516 and the customized pressure relief valve 515, causing the cylinder member 514 to extend. The cylinder member 514 drives the switching rack 512 to move through the end connector 513, causing the gear disk 510 and the bidirectional lead screw 507 to rotate. When the bidirectional lead screw 507 rotates, the two sets of slider ends 505 move apart, and at this time, the distance between the two sets of distance-limiting plate pages 502 increases, causing the upward and downward movement stroke of the movable sub-shaft 5 to increase, so that the powder bin 1 has a higher buffer flipping stroke.
[0044] As Figure 9 shown, the diameter of the reset beam hole 521 is small enough so that the beam exhaust flow rate of the reset beam hole 521 is much smaller than the gas input flow rate of the gas input pipe 516, ensuring that the cylinder member 514 can be filled with air pressure. When the cylinder member 514 extends completely in place, as the gas input pipe 516 continues to supply positive pressure, the air pressure in the customized pressure relief valve 515 continuously increases until the air pressure pushes the sealing plug 518 open for pressure relief.
[0045] When the driving main shaft 7 stops rotating, the gas input pipe 516 stops inputting positive-pressure gas, and the gas in the cylinder member 514 gradually discharges to the outside through the reset beam hole 521. The cylinder member 514 automatically elastically retracts and resets, and then causes the bidirectional lead screw 507 to rotate in the reverse direction. At this time, the distance-limiting plate pages 502 come closer and clamp the distance-limiting convex ring 501. At this time, the powder bin 1 loses the buffer flipping stroke, so as to ensure the locking stability of the powder bin 1 and avoid the powder bin 1 from swinging and shaking during the feeding and discharging processes.
[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A method for preparing aluminum-titanium-boron master alloy, characterized in that, The preparation method includes the following steps: Step 1: Grind the aluminum, titanium, and boron raw materials into powders. The particle size of the aluminum powder is between 50 and 200 mesh, and the particle sizes of the titanium powder and boron powder are between 100 and 300 mesh. Step 2: According to a certain alloy composition ratio, fully mix the three powders evenly in a powder mixer, and then put the mixed powder into a mold and press it under a certain pressure to form a green body with the required shape. The pressing pressure is between 250 and 500 MPa. Step 3: Put the green body into a high-temperature furnace for sintering. The sintering temperature is between 600 and 1000 °C, the sintering atmosphere is an inert gas, and keep it warm for 2 to 4 hours to obtain an aluminum-titanium-boron master alloy.
2. The preparation method of the aluminum-titanium-boron master alloy according to claim 1, characterized in that: In Step 2, the powder mixer specifically includes a powder bin, and trapezoidal side frames, a worm gear part, and a worm part arranged on both sides of the powder bin for supporting the powder bin. The worm gear part and the worm part are meshed with each other and have a self-locking ability. The worm part drives the worm gear part to rotate, so that the powder bin rolls to mix the internal powder. The powder mixer further includes a movable split shaft, a transmission spring section, and a driving main shaft. The worm part is coaxially and fixedly connected to the movable split shaft. The transmission spring section is arranged between the movable split shaft and the driving main shaft, and the transmission spring section and the driving main shaft are coaxially and fixedly connected. When the transmission spring section rotates, it can drive the movable split shaft to rotate, and the movable split shaft can elastically stretch and move along the axis direction relative to the transmission spring section.
3. The preparation method of the aluminum-titanium-boron master alloy according to claim 2, characterized in that: The transmission spring section is provided with a hexagonal notch. A hexagonal shaft is coaxially and fixedly arranged at the lower part of the movable split shaft. The hexagonal shaft passes through the hexagonal notch and is in limit fit with the hexagonal notch. When the transmission spring section rotates, the hexagonal notch limits the hexagonal shaft, so that the movable split shaft rotates. The interior of the transmission spring section is provided with an intermediate disk. The lower end of the hexagonal shaft is fixedly installed with the intermediate disk. Fixed centering springs are symmetrically arranged on the upper and lower parts of the intermediate disk. Through the elastic pressure of the fixed centering springs, the intermediate disk has an elastic tendency to be in the middle position of the transmission spring section.
4. The preparation method of the aluminum-titanium-boron master alloy according to claim 2, characterized in that: A distance-limiting convex ring is fixedly arranged on the outside of the movable split shaft. Distance-limiting plate pages are symmetrically arranged on the upper and lower parts of the distance-limiting convex ring. The distance-limiting plate pages limit the distance-limiting convex ring up and down. A cam part is fixedly arranged on the driving main shaft. An extrusion air pump is arranged outside the cam part. When the driving main shaft rotates, the cam part cooperates with the extrusion air pump, so that the extrusion air pump generates positive-pressure gas. Through the positive-pressure gas, the distance between the upper and lower groups of distance-limiting plate pages increases. When the driving main shaft stops rotating, the distance between the upper and lower groups of distance-limiting plate pages decreases.
5. The preparation method of the aluminum-titanium-boron master alloy according to claim 4, characterized in that: A slider end is fixedly arranged on the distance-limiting plate page. A chute vertical plate is fixedly arranged on the trapezoidal side frame. The slider end is arranged in the chute vertical plate in a limited sliding manner. A bidirectional lead screw is inserted through the slider end. The bidirectional lead screw is in screw fit with the slider end. Two sets of threads with opposite spiral directions are arranged on the bidirectional lead screw. By rotating the bidirectional lead screw, the two sets of distance-limiting plate pages can be driven to move synchronously and in opposite directions.
6. The preparation method of the aluminum-titanium-boron master alloy according to claim 5, characterized in that: An axial clamping sleeve is fixedly arranged on the chute vertical plate, and an axial clamping ring is fixedly arranged on the bidirectional lead screw. Through the cooperation of the axial clamping ring and the axial clamping sleeve, the bidirectional lead screw is axially limited; a gear disc is fixedly arranged at the end of the bidirectional lead screw, a rack chute is fixedly arranged on the trapezoidal side frame, a switching rack is slidably limited in the rack chute, and the switching rack meshes with the gear disc. Through the linear reciprocating motion of the switching rack, the gear disc is driven to rotate forward and backward.
7. The preparation method of the aluminum-titanium-boron master alloy according to claim 6, characterized in that: An end connector is fixedly arranged outside the switching rack, a cylinder part is fixedly arranged on the trapezoidal side frame, the cylinder part extends after inputting positive-pressure gas and can elastically retract after losing the positive-pressure gas, and the telescopic shaft of the cylinder part is fixedly connected with the switching rack through the end connector; A customized pressure relief valve is communicated with the outside of the cylinder part, a gas input pipe is arranged on the customized pressure relief valve, the gas input pipe is communicated with the cylinder part through the customized pressure relief valve, and the other end of the gas input pipe is communicated with an extrusion air pump; A pressure relief hole is opened in the customized pressure relief valve, a sealing plug is arranged on one side of the pressure relief hole, the pressure relief hole is blocked by the sealing plug, an annular plug is spirally installed in the customized pressure relief valve, a pressure spring is arranged between the annular plug and the sealing plug, and under the elastic pressure of the pressure spring, the sealing plug is in sealed contact with the pressure relief hole to achieve blocking. A reset flow hole is penetrated through the sealing plug, and the pressure relief hole is continuously communicated with the outside through the reset flow hole.
8. The preparation method of the aluminum-titanium-boron master alloy according to claim 2, wherein: A positioning point is arranged on the powder bin, a positioning sensor is arranged outside the powder bin, and through the cooperation of the positioning sensor and the positioning point, the position of the powder bin is detected to make the top bin opening of the powder bin face upward when the machine stops.
9. The aluminum-titanium-boron master alloy is prepared by the preparation method of the aluminum-titanium-boron master alloy according to any one of claims 1-8, and the weight percentages are as follows: Titanium 4.2-5%, boron 0.5-0.8%, and the balance is aluminum.
10. The application of the aluminum-titanium-boron master alloy according to claim 9, wherein, During the melting process of the aluminum alloy, the aluminum-titanium-boron master alloy is added.