A method for producing a composite alloy powder

Abstract

The application discloses a preparation method of a composite alloy powder, which comprises the following steps: smelting, hydrogen breaking, airflow grinding and compounding. The composite alloy powder is prepared by compounding three kinds of alloy powders with different types and different sizes, so that the synergistic diffusion effect of the multiple alloys can be achieved, the coercive force is greatly improved, the remanence is slightly reduced, the effect is better than that of single material, and the utilization rate of rare earth can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of grain boundary diffusion, and particularly relates to a preparation method of a composite alloy powder. BACKGROUND

[0002] Sintered neodymium-iron-boron diffusion coating originated from the grain boundary diffusion (GBD) technology named by Nakamura et al. in the early 21st century. The invention of the technology laid the theoretical foundation for diffusion coating. According to the different diffusion sources, the grain boundary diffusion can be divided into surface coating diffusion method, surface sputtering diffusion method and gas phase evaporation method. Among them, the surface coating diffusion method is a method of mixing diffusion source materials, resins, additives, solvents and the like to prepare diffusion coating, and then preparing a coating layer by brushing, spraying and the like, and then performing high-temperature diffusion treatment after low-temperature surface drying. The coating diffusion method has the advantages of improving the coercivity of the magnet, without significantly reducing the remanence, and can effectively reduce the amount of heavy rare earth additives and is suitable for large-scale production, which has caused a great leap in the magnetic material industry.

[0003] However, the method also has some disadvantages at present, such as insufficient diffusion depth, gradually reduced effective utilization rate when the coating amount increases, not only waste of coating, but also easy to cause the phenomenon of sticking material (magnetic pieces are bonded together) and coating layer falling off. The sticking material will directly cause the product to be scrapped, and the coating layer falling off will cause the diffusion material to separate from the substrate and not play the diffusion purpose, thereby causing insufficient performance. SUMMARY

[0004] The purpose of the present application is to solve the problems in the background art and provide a preparation method of a composite alloy powder.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] A preparation method of a composite alloy powder, comprising the following steps:

[0007] S1, melting, melting raw materials of M0M1, M2H and M3Fe respectively to obtain respective alloy ribbon;

[0008] S2, hydrogen breaking, putting the alloy ribbon of M0M1, M2H and M3Fe into respective hydrogen breaking furnaces for hydrogen breaking;

[0009] S3, airflow mill, grinding the hydrogen broken alloy ribbon into a micro powder in the airflow mill respectively to obtain M0M1 alloy powder, M2H alloy powder and M3Fe alloy powder;

[0010] S4, compounding, mixing the M0M1 alloy powder, the M2H alloy powder and the M3Fe alloy powder to obtain a composite alloy powder.

[0011] The particle sizes of the M0M1, M2H and M3Fe alloy powders are controlled at 0.5-1 micron, 1-3 microns and 0.5-1.5 microns respectively.

[0012] The three types of alloy powders are as follows: M0 is one or two combinations of Pr or Nd; M1 is one or more combinations of Co, Ni, Al, Cu, Zn, Ga and Mo; M2H is one or two combinations of Dy or Tb, and H is hydrogen; and M3Fe is one or more combinations of Gd, Ho, La and Ce.

[0013] The mass percentages of the M0M1, M2H and M3Fe alloy powders are 20-45%, 35-50% and 15-20% respectively.

[0014] The present application can realize the synergistic diffusion effect of multiple alloys, greatly improve the coercivity with little reduction of remanence, and has better effect than single material, and can improve the utilization rate of rare earth.

[0015] The present application can optimize the diffusion channel, improve the diffusion depth, improve the effective utilization rate of the coating, optimize the microstructure of the substrate and improve the anisotropy of the hard magnetic grain, so as to greatly improve the coercivity with little reduction of remanence or small reduction.

[0016] The present application can greatly improve the coercivity with little reduction of remanence or small reduction, and ensure that the coating does not fall off and the adhesion between the magnetic sheets.

[0017] The hydrogen breaking device comprises a frame, and the frame is sequentially provided with a lifting feeding mechanism, a hydrogen breaking furnace overturning mechanism, a M0M1 alloy strip piece high-efficiency cooling hydrogen breaking furnace mechanism, a M2H alloy strip piece high-efficiency cooling hydrogen breaking furnace mechanism, a M3Fe high-efficiency cooling hydrogen breaking furnace mechanism, and a hydrogen breaking furnace transfer mechanism above the M0M1 alloy strip piece high-efficiency cooling hydrogen breaking furnace mechanism, the M2H alloy strip piece high-efficiency cooling hydrogen breaking furnace mechanism and the M3Fe high-efficiency cooling hydrogen breaking furnace mechanism.

[0018] The hydrogen breaking furnace is transferred to the hydrogen breaking furnace turnover mechanism by the hydrogen breaking furnace transfer mechanism, the hydrogen breaking furnace turnover mechanism turns the hydrogen breaking furnace from horizontal to vertical direction, the feeding port of the hydrogen breaking furnace is upward, the discharging port is downward, the material is taken out through the discharging port, then the discharging port is closed, the feeding port is opened, the material is conveyed to the upper side of the hydrogen breaking furnace turnover mechanism through the lifting feeding mechanism, the material falls into the hydrogen breaking furnace, then the hydrogen breaking furnace is turned over, so that the hydrogen breaking furnace is turned over from vertical to horizontal direction, then the hydrogen breaking furnace is transferred to the M0M1 alloy strip casting high-efficiency cooling hydrogen breaking furnace mechanism or the M2H alloy strip casting high-efficiency cooling hydrogen breaking furnace mechanism or the M3Fe high-efficiency cooling hydrogen breaking furnace mechanism for heating, hydrogen breaking and cooling, so that the hydrogen breaking is completed, the whole process has high automation degree, and multiple hydrogen breaking furnaces can work simultaneously, so that the work efficiency is improved.

[0019] Preferably, the M0M1 alloy strip casting high-efficiency cooling hydrogen breaking furnace mechanism comprises a workbench, a hydrogen breaking furnace body, a heating furnace, a bottom water spraying pipe, a water collecting tank and side water spraying pipes, the hydrogen breaking furnace body can rotate through a driving device, the driving device can adopt a motor, and the motor rotates the furnace body, which is prior art, so that the description is not repeated in the present case, the workbench is arranged on a rack, the hydrogen breaking furnace body is horizontally placed on the top of the workbench, the water collecting tank is arranged at the bottom of the hydrogen breaking furnace body and fixed on the workbench, the bottom water spraying pipe is arranged on the water collecting tank, the side water spraying pipes are located on the two sides of the hydrogen breaking furnace body, and the heating furnace comprises a first half furnace body and a second half furnace body for clamping the hydrogen breaking furnace body oppositely, the bottom of each of the first half furnace body and the second half furnace body is provided with a sliding block, the workbench is provided with a sliding rail, the sliding block slides on the sliding rail, and one end of the hydrogen breaking furnace body is connected with a gas distribution device for vacuumizing and aerating the hydrogen breaking furnace body, which is prior art, and the hydrogen breaking furnace has the gas distribution device, so that the description is not repeated in the present case.

[0020] The first half furnace body and the second half furnace body are closed by approaching the hydrogen breaking furnace along the sliding rails, the gas distribution device is used for vacuumizing and filling hydrogen in the hydrogen breaking furnace body, then the hydrogen breaking furnace is rotated, the stirring dry rod in the hydrogen breaking furnace body starts to stir the material, the rotation and stirring are favorable for improving the hydrogen absorption speed and uniformity of the material, the heating furnace is heated, the gas distribution device is used for dehydrogenation, then the gas distribution device is used for injecting inert gas into the furnace barrel, then the first half furnace body and the second half furnace body are separated and moved away from the hydrogen breaking furnace along the respective sliding rails, then the bottom water spraying pipe and the side water spraying pipes spray water to the hydrogen breaking furnace, so that the spraying area of the hydrogen breaking furnace is increased, and the hydrogen breaking furnace is efficiently and fully cooled.

[0021] Preferably, the bottom of the side water spraying pipe is provided with a rotating shaft, the bottom of the water spraying pipe penetrates through the rotating shaft, one side of the rotating shaft is rotatably connected with the workbench, the other side is fixedly connected with a turnover motor, the motor end of the turnover motor is fixedly connected with the side wall of the workbench, and the bottom of the workbench is provided with an accommodating cavity capable of accommodating the side water spraying pipe.

[0022] The present application controls the rotation of the rotating shaft through the turnover motor, so that the side water spraying pipe can be turned over to the vertical state for work when needed, and can be hidden in the accommodating cavity through turnover when not needed, preventing affecting the heating furnace.

[0023] The hydrogen furnace breaking transfer mechanism comprises a top plate arranged above the workbench, a transfer sliding rail arranged at the bottom of the top plate, a first sliding plate arranged at the bottom of the transfer sliding rail, a distance adjusting sliding rail arranged at the bottom of the sliding plate, the sliding direction of the distance adjusting sliding rail being perpendicular to the transfer sliding rail, a second sliding plate arranged at the bottom of the distance adjusting sliding rail, two lifting hooks arranged at the bottom of the second sliding plate, the two lifting hooks corresponding to the two ends of the hydrogen furnace body, a lifting hook electric push rod arranged between the lifting hook and the second sliding plate, the motor end of the lifting hook electric push rod being fixedly connected with the second sliding plate, and the push rod end of the lifting hook electric push rod being fixedly connected with the lifting hook.

[0024] The present application moves the lifting hook to the side of the hydrogen furnace through the distance adjusting sliding rail, then the lifting hook electric push rod drives the lifting hook to move downward, so that the lifting hook is located at the side of the neck of the hydrogen furnace, then the lifting hook is moved through the distance adjusting sliding rail, so that the lifting hook hooks the neck of the hydrogen furnace, then the lifting hook electric push rod moves upward, and then the transfer sliding rail is moved to the hydrogen furnace turnover mechanism or the M0M1 alloy belt piece efficient cooling hydrogen furnace breaking mechanism, so that manual carrying is not needed, multiple workstations of the hydrogen furnace can work at the same time, and the working efficiency is improved.

[0025] Preferably, the hydrogen furnace overturning mechanism comprises a first up-down sliding slide rail, a second up-down sliding slide rail, a first up-down sliding slide block, a first rotary motor, a control opening and closing electric push rod, a ring-shaped clamp, a second rotary motor, the first up-down sliding slide rail and the second up-down sliding slide rail are arranged on the side wall of the rack, the first up-down sliding slide rail and the second up-down sliding slide rail are oppositely arranged, the ring-shaped clamp is arranged between the first up-down sliding slide rail and the second up-down sliding slide rail, the ring-shaped clamp is composed of an upper half ring and a lower half ring, the output end of the first rotary motor is fixedly connected with the side wall of the lower half ring, the motor end of the first rotary motor is fixedly connected with the first up-down sliding slide block, the first up-down sliding slide block is slidably arranged on the first up-down sliding slide rail, the motor end of the control opening and closing electric push rod is fixedly connected with the output end of the second rotary motor, the motor end of the second rotary motor is slidably arranged on the second up-down sliding slide rail, the push rod end of the control opening and closing electric push rod is provided with a rotary plate, one end of the rotary plate is hingedly connected with the control opening and closing electric push rod, and the other end is fixedly connected with the side wall of the lower half ring.

[0026] The upper half ring is opened by shortening the control opening and closing electric push rod, the hydrogen furnace is placed after being moved by the hydrogen furnace transferring mechanism, the upper half ring is combined with the lower half ring by extending the control opening and closing electric push rod, so that the hydrogen furnace is clamped, then the ring-shaped clamp is overturned by the first rotary motor and the second rotary motor, so that the hydrogen furnace is in a vertical state, which is convenient for feeding and discharging in the later period, after feeding is completed, the hydrogen furnace is lifted away by the hydrogen furnace transferring mechanism, which is convenient for feeding and discharging in the later period, and also makes one hydrogen furnace perform feeding, and other hydrogen furnaces can also work.

[0027] Preferably, the lifting feeding mechanism comprises a material tank horizontal moving slide rail, an electric hoist and an electric hoist fixing plate, the material tank horizontal moving slide rail is arranged on the top of the rack, the material tank horizontal moving slide rail is provided with two, and the two material tank horizontal moving slide rails are arranged along the length direction of the rack, the electric hoist fixing plate is fixed on the material tank horizontal moving slide rail, the electric hoist is arranged on the electric hoist fixing plate, and the electric hoist fixing plate is provided with a mounting port for facilitating the up-down movement of the lifting hook of the electric hoist.

[0028] The bottom of the rack is provided with a conveying vehicle, the conveying vehicle comprises two mutually parallel conveying slide rails, a tray is slidably arranged on the conveying slide rail, a fixing ring is fixed on the tray, and a material tank is arranged in the fixing ring.

[0029] The material tank comprises a tank body with a top opening, the top of the tank body is provided with a support frame, the support frame is formed with a feeding port, the bottom of the tank body is provided with a discharging port, the discharging port is provided with a bottom plate, the diameter of the bottom plate is larger than that of the discharging port, the middle part of the support frame is provided with a through hole, the through hole is provided with a sliding rod, the bottom of the sliding rod extends into the tank body and is fixedly connected with the bottom plate, and the top of the sliding rod is fixedly connected with a tank lifting hook.

[0030] The tank body is placed on the fixing ring, the material is put into the tank body through the feeding port of the support frame, then the tank is transported to the lower part of the rack through the conveying slide rail, the electric hoist lifts the tank lifting hook, moves to the upper part of the hydrogen breaking furnace overturning mechanism through the tank horizontal moving slide rail, then falls into the feeding port of the hydrogen breaking furnace which is turned to the vertical direction, when the conical part of the tank is inserted into the feeding port of the hydrogen breaking furnace, the electric hoist continues to move downward, so that the bottom plate is opened, and the material falls into the tank, then the electric hoist moves upward, the bottom of the tank is closed, then the tank is reset along the tank horizontal moving slide rail, then is adjusted into the fixing ring, then is reset through the conveying slide rail, so that the lifting feeding is completed, and manual feeding is not needed.

[0031] In summary, the beneficial effects of the present application are:

[0032] 1. The three different structures and components of the alloy powder are compounded, which is beneficial to optimize the diffusion channel and improve the diffusion depth, not only improves the effective utilization rate of the coating, but also optimizes the microstructure of the base material and improves the anisotropy of the whole hard magnetic grain, so that the coercive force can be greatly improved under the condition of less diffusion coating (heavy rare earth metal), and the remanence is almost not reduced or the reduction is very small;

[0033] 2. The hydrogen breaking furnace is transferred to the hydrogen breaking furnace overturning mechanism through the hydrogen breaking furnace transfer mechanism, the hydrogen breaking furnace overturning mechanism turns the hydrogen breaking furnace from horizontal to vertical direction, the feeding port of the hydrogen breaking furnace is upward, the discharging port is downward, the material is taken out through the discharging port, then the discharging port is closed and the feeding port is opened, the material is transported to the upper part of the hydrogen breaking furnace overturning mechanism through the lifting feeding mechanism, the material falls into the hydrogen breaking furnace, then is turned, so that the hydrogen breaking furnace is turned from vertical to horizontal direction, then is transferred to the M0M1 alloy ribbon high-efficiency cooling hydrogen breaking furnace mechanism or the M2H alloy ribbon high-efficiency cooling hydrogen breaking furnace mechanism or the M3Fe high-efficiency cooling hydrogen breaking furnace mechanism through the hydrogen breaking furnace transfer mechanism for heating, hydrogen breaking and cooling, so that the hydrogen breaking is completed, the whole process has high automation degree, and multiple hydrogen breaking furnaces can work at the same time, so that the working efficiency is improved;

[0034] 3. The first half furnace body and the second half furnace body of the present application are closed along the sliding rails like a hydrogen breaking furnace, the gas distribution device performs vacuumization on the hydrogen breaking furnace body, fills hydrogen, and then the hydrogen breaking furnace is rotated, the stirring rod in the hydrogen breaking furnace starts to stir the material, and the rotation and stirring are beneficial to improving the hydrogen absorption speed and uniformity of the material, the heating furnace is heated, the gas distribution device is dehydrogenated, then the gas distribution device is used to flush inert gas into the furnace barrel, then the first half furnace body and the second half furnace body are separated and moved away from the hydrogen breaking furnace along the respective sliding rails, then the bottom water jet pipe and the side water jet pipe spray water to the hydrogen breaking furnace, thereby improving the spraying area of the hydrogen breaking furnace and achieving efficient and sufficient cooling;

[0035] 4. The upper half ring is opened by controlling the opening and closing electric push rod to shorten, after the hydrogen breaking furnace is placed, the upper half ring is combined with the lower half ring by controlling the opening and closing electric push rod to extend, so as to clamp the hydrogen breaking furnace, then the hydrogen breaking furnace is moved to a certain distance by the sliding rail, the first rotary motor and the second rotary motor work at the same time to overturn the ring-shaped clamp, so that the hydrogen breaking furnace is in a vertical state, which is convenient for feeding and discharging in the later period, after feeding is completed, the hydrogen breaking furnace is lifted away by the hydrogen breaking furnace transfer mechanism, which is convenient for feeding and discharging in the later period, and also makes one hydrogen breaking furnace load, and other hydrogen breaking furnaces can also work;

[0036] 5. The tank body is placed on the fixed ring, the material is put into the tank body through the feeding port of the support frame, then the tank is conveyed to the lower part of the rack through the conveying sliding rail, the electric hoist lifts the tank hook, moves to the upper part of the hydrogen breaking furnace overturning mechanism through the tank horizontal moving sliding rail, then falls into the feeding port of the hydrogen breaking furnace which is overturned to a vertical direction, when the conical part of the tank is inserted into the feeding port of the hydrogen breaking furnace, the electric hoist continues to move downward, so as to open the bottom plate and make the material fall into the tank, then the electric hoist moves upward to close the bottom of the tank, then the tank is reset in the fixed ring through the tank horizontal moving sliding rail, and then the conveying sliding rail is reset, so that the lifting and feeding are completed without manual feeding. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the overall schematic diagram of the hydrogen breaking device of the present application;

[0038] Figure 2 It is the overall schematic diagram of the M0M1 alloy strip casting high-efficiency cooling hydrogen breaking furnace mechanism of the present application;

[0039] Figure 3 It is the overall schematic diagram of the hydrogen breaking furnace overturning mechanism of the present application;

[0040] Figure 4 It is the three-dimensional schematic diagram of the tank of the present application;

[0041] Figure 5 is a schematic view of a cross section of the material tank of the present application;

[0042] Figure 6 is a schematic view of a cross section of the hydrogen furnace of the present application; DETAILED DESCRIPTION

[0043] The following specific examples are merely illustrative of the present application and are not intended to limit the present application. Those skilled in the art can make modifications to the present examples without creative contribution, according to the needs after reading the present specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

[0044] The present application will be described in detail below with examples in combination with the accompanying drawings.

[0045] Example 1

[0046] A preparation method of a composite alloy powder, comprising the following steps:

[0047] S1, melting, melting raw materials of M0M1, M2H and M3Fe respectively to obtain respective alloy ribbon;

[0048] S2, hydrogen breaking, putting the alloy ribbon of M0M1, M2H and M3Fe into respective hydrogen breaking furnaces for hydrogen breaking;

[0049] S3, air jet milling, milling the alloy ribbon after hydrogen breaking in air jet mills to obtain M0M1 alloy powder, M2H alloy powder and M3Fe alloy powder respectively;

[0050] S4, compounding, mixing the M0M1 alloy powder, M2H alloy powder and M3Fe alloy powder to obtain a composite alloy powder.

[0051] The particle sizes of M0M1, M2H and M3Fe are controlled at 0.5 μm, 1 μm and 0.5 μm respectively by melting, hydrogen breaking and air jet milling, and a common hydrogen breaking furnace is used, and the cooling time is 4 h.

[0052] The three types of alloy powder, wherein M0 is one or two combinations of Pr or Nd; M1 is one or more combinations of Co, Ni, Al, Cu, Zn, Ga and Mo; M2 in M2H is one or two combinations of Dy or Tb, and H is hydrogen element; M3 in M3Fe is one or more combinations of Gd, Ho, La and Ce.

[0053] The mass percentages of M0M1, M2H and M3Fe are 20%, 35% and 15% respectively.

[0054] Example 2

[0055] A preparation method of a composite alloy powder, comprising the following steps:

[0056] S1, smelting, raw materials of M0M1, M2H, M3Fe are respectively melted to obtain respective alloy ribbon;

[0057] S2, hydrogen breaking, the alloy ribbon of M0M1, M2H, M3Fe is put into respective hydrogen breaking furnace for hydrogen breaking;

[0058] S3, jet mill, the alloy ribbon after hydrogen breaking is respectively ground into powder in the jet mill, to obtain M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder respectively;

[0059] S4, compounding, M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder are mixed to obtain composite alloy powder.

[0060] Through smelting, hydrogen breaking and jet mill, the particle sizes of M0M1, M2H, M3Fe are respectively controlled at 1 μm, 3 μm, 1.5 μm, and the cooling time is 3 h.

[0061] Three types of alloy powder, wherein M0 is one or two combinations of Pr or Nd; M1 is one or more combinations of Co, Ni, Al, Cu, Zn, Ga, Mo; M2H, M2 is one or two combinations of Dy or Tb, and H is hydrogen element; M3Fe, M3 is one or more combinations of Gd, Ho, La, Ce.

[0062] The mass percentages of M0M1, M2H, M3Fe three alloy powders are 45%, 50% and 20% respectively.

[0063] Example 3

[0064] A preparation method of a composite alloy powder, comprising the following steps:

[0065] S1, smelting, raw materials of M0M1, M2H, M3Fe are respectively melted to obtain respective alloy ribbon;

[0066] S2, hydrogen breaking, the alloy ribbon of M0M1, M2H, M3Fe is put into respective hydrogen breaking furnace for hydrogen breaking;

[0067] S3, jet mill, the alloy ribbon after hydrogen breaking is respectively ground into powder in the jet mill, to obtain M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder respectively;

[0068] S4, compounding, M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder are mixed to obtain composite alloy powder.

[0069] The particle sizes of M0M1, M2H and M3Fe are controlled at 0.7 μm, 2 μm and 1 μm respectively by melting, hydrogen decrepitation and jet milling.

[0070] The three types of alloy powder are as follows: M0 is one or two combinations of Pr or Nd; M1 is one or more combinations of Co, Ni, Al, Cu, Zn, Ga and Mo; M2H is one or two combinations of Dy or Tb, and H is hydrogen element; and M3Fe is one or more combinations of Gd, Ho, La and Ce.

[0071] The mass percentages of M0M1, M2H and M3Fe are 33%, 43% and 18% respectively.

[0072] Example 4

[0073] A preparation method of a composite alloy powder comprises the following steps:

[0074] S1, melting, melting raw materials of M0M1, M2H and M3Fe to obtain alloy ribbon strips of each alloy respectively;

[0075] S2, hydrogen decrepitation, putting the alloy ribbon strips of M0M1, M2H and M3Fe into respective hydrogen decrepitation furnaces for hydrogen decrepitation;

[0076] S3, jet milling, jet milling the alloy ribbon strips after hydrogen decrepitation into micropowder in a jet mill to obtain M0M1 alloy powder, M2H alloy powder and M3Fe alloy powder respectively;

[0077] S4, compounding, mixing the M0M1 alloy powder, M2H alloy powder and M3Fe alloy powder to obtain a composite alloy powder.

[0078] The particle sizes of M0M1, M2H and M3Fe are controlled at 0.5 μm, 1 μm and 0.5 μm respectively by melting, hydrogen decrepitation and jet milling.

[0079] The three types of alloy powder are as follows: M0 is one or two combinations of Pr or Nd; M1 is one or more combinations of Co, Ni, Al, Cu, Zn, Ga and Mo; M2H is one or two combinations of Dy or Tb, and H is hydrogen element; and M3Fe is one or more combinations of Gd, Ho, La and Ce.

[0080] The mass percentages of M0M1, M2H and M3Fe are 20%, 35% and 15% respectively.

[0081] As Figure 1As shown, the hydrogen crushing step employs a hydrogen crushing device 7, which includes a frame 70. From left to right, the frame 70 is sequentially equipped with a lifting and feeding mechanism 72, a hydrogen crushing furnace tilting mechanism 74, a high-efficiency cooling hydrogen crushing furnace mechanism 71 for M0M1 alloy strip spinning, a high-efficiency cooling hydrogen crushing furnace mechanism 75 for M2H alloy strip spinning, a high-efficiency cooling hydrogen crushing furnace mechanism 76 for M3Fe, and a high-efficiency cooling hydrogen crushing furnace mechanism 776 for M0M1 alloy strip spinning. The high-efficiency cooling hydrogen blasting furnace mechanism 75 and the M3Fe high-efficiency cooling hydrogen blasting furnace mechanism 76 are equipped with a hydrogen blasting furnace transfer mechanism 73 above them. The high-efficiency cooling hydrogen blasting furnace mechanism 75, the M3Fe high-efficiency cooling hydrogen blasting furnace mechanism 76 and the M0M1 alloy high-efficiency cooling hydrogen blasting furnace mechanism 71 have the same structure. The M0M1 alloy high-efficiency cooling hydrogen blasting furnace mechanism 71 includes a workbench 711, a hydrogen blasting furnace body 712, a heating furnace 713, and a bottom water spray. The hydrogen crusher body 712 comprises a pipe 714, a water collection tank 715, and side spray pipes 716. The workbench 711 is mounted on the frame 70. The hydrogen crusher body 712 lies flat on top of the workbench 711. The water collection tank 715 is located at the bottom of the hydrogen crusher body 712 and fixed to the workbench 711. The bottom spray pipe 714 is located on the water collection tank 715. The side spray pipes 716 are located on both sides of the hydrogen crusher body 712. The heating furnace 713 includes components for... The first half of the hydrogen crusher body 712 is clamped by a first half furnace body 717 and a second half furnace body 718. The bottom of the first half furnace body 717 and the second half furnace body 718 are both provided with sliders 719. The worktable 711 is provided with a slide rail 720. The sliders 719 slide on the slide rail 720. The water collection tank is provided with a water outlet. The interior of the hydrogen crusher body 712 is provided with a number of stirring rods 7121 along the circumferential direction. Multiple sets of stirring rods 7121 are provided along their axial direction.

[0082] like Figure 2 As shown, the bottom of the side spray pipe 716 is provided with a rotating shaft, and the bottom of the spray pipe 716 passes through the rotating shaft. One side of the rotating shaft is rotatably connected to the worktable 711, and the other side is fixedly connected to a tilting motor. The motor end of the tilting motor is fixedly connected to the side wall of the worktable 711. The worktable 711 is provided with a receiving cavity 725 at the bottom of the slider 719, which can accommodate the side spray pipe 716. There are three or more side spray pipes arranged on the rotating shaft. The bottom of the side spray pipe is connected to a flexible hose for easy tilting. The side spray pipe has a spray hole on the side near the hydrogen crusher, and a spray hole is provided above the bottom spray pipe.

[0083] like Figure 1As shown, the hydrogen furnace transfer mechanism 73 includes a top plate 731 arranged above the workbench, the bottom of the top plate 731 is provided with a transfer slide rail 732, the bottom of the transfer slide rail 732 is provided with a first slide plate 733, the bottom of the slide plate 733 is provided with a distance adjusting slide rail 735, the distance adjusting slide rail 735 is perpendicular to the sliding direction of the transfer slide rail 732, the bottom of the distance adjusting slide rail 735 is provided with a second slide plate 736, the bottom of the second slide plate 736 is provided with a lifting hook 734, the lifting hook 734 is arranged in two, the two lifting hooks 734 correspond to the two ends of the hydrogen furnace body 712, and the lifting hook 734 and the second slide plate 736 are provided with a lifting hook electric push rod 737, the motor end of the lifting hook electric push rod 737 is fixedly connected with the second slide plate 736, and the push rod end of the lifting hook electric push rod 737 is fixedly connected with the lifting hook 734.

[0084] As shown in the figure, Figure 3 As shown, the hydrogen furnace turnover mechanism 74 includes a first up-down sliding slide rail 741, a second up-down sliding slide rail 742, a first up-down sliding slide block 743, a first rotary motor 745, a control opening and closing electric push rod 746, a ring-shaped clamp 747, and a second rotary motor 748. The first up-down sliding slide rail 741 and the second up-down sliding slide rail 742 are arranged on the side wall of the rack 70, and the first up-down sliding slide rail 741 and the second up-down sliding slide rail 742 are oppositely arranged. The ring-shaped clamp 747 is arranged between the first up-down sliding slide rail 741 and the second up-down sliding slide rail 742, and the ring-shaped clamp 747 is composed of an upper half ring 740 and a lower half ring 749. The output end of the first rotary motor 745 is fixedly connected with the side wall of the lower half ring 749, the motor end of the first rotary motor 745 is fixedly connected with the first up-down sliding slide block 743, the first up-down sliding slide block 743 is slidingly arranged on the first up-down sliding slide rail 741, the motor end of the control opening and closing electric push rod 746 is fixedly connected with the output end of the second rotary motor 748, and the motor end of the second rotary motor 748 is slidingly arranged on the second up-down sliding slide rail 742. The push rod end of the control opening and closing electric push rod 746 is provided with a rotating plate 7461, one end of the rotating plate 7461 is hinged with the control opening and closing electric push rod 746, and the other end is fixedly connected with the side wall of the lower half ring 749.

[0085] As shown in the figure, Figures 4-5As shown, the lifting feeding mechanism 72 comprises a tank horizontal moving slide rail 721, an electric hoist 722 and an electric hoist fixing plate 723. The tank horizontal moving slide rail 721 is arranged on the top of the rack 70. The tank horizontal moving slide rail 721 is provided with two tank horizontal moving slide rails 721, which are arranged along the length direction of the rack 70. The electric hoist fixing plate 723 is fixed on the tank horizontal moving slide rail 721. The electric hoist 722 is arranged on the electric hoist fixing plate 723. The electric hoist fixing plate 723 is provided with a mounting port 724, which facilitates the up-down movement of the lifting hook of the electric hoist 722. The bottom of the rack 70 is provided with a conveying trolley 77. The conveying trolley 77 comprises two parallel conveying slide rails 771. A tray 772 is slidably arranged on the conveying slide rail 771. A fixing ring 773 is fixed on the tray 772. A tank 774 is arranged in the fixing ring 773. The tank 774 comprises a tank body 775 with an open top. A support frame 774 is arranged on the top of the tank body 775. An inlet 770 is formed on the support frame 774. An outlet is arranged on the bottom of the tank body 775. A bottom plate 776 is arranged on the outlet. The diameter of the bottom plate 776 is larger than that of the outlet. A through hole 777 is arranged in the middle of the support frame 774. A slide rod 778 is arranged in the through hole 777. The bottom of the slide rod 778 is fixedly connected with the bottom plate 776. The top of the slide rod 778 is fixedly connected with a tank lifting hook 779. The lower half of the tank body 775 is tapered.

[0086] Working principle: as Figures 1-6As shown, the present application controls the opening and closing of the electric push rod 746 to make the upper half ring 740 open, after the hydrogen breaking furnace is put in by the hydrogen breaking furnace transfer mechanism, the upper half ring 740 is combined with the lower half ring 749 by controlling the extension of the opening and closing electric push rod 746, so as to clamp the hydrogen breaking furnace, then move to a certain distance by the sliding rail, the first rotary motor 745 and the second rotary motor 748 work at the same time, the annular clamp 747 is turned over, so that the hydrogen breaking furnace is in a vertical state, then the feeding port is opened manually, then the conveying sliding rail 771 feeds the tank 774 to the lower part of the rack 70, the electric hoist 722 lifts the tank hook 779, moves to the upper part of the hydrogen breaking furnace turnover mechanism through the tank horizontal moving sliding rail 721, then falls into the feeding port of the hydrogen breaking furnace turned to the vertical direction, when the conical part of the tank is inserted into the feeding port of the hydrogen breaking furnace, the electric hoist 722 continues to move downward, so as to open the bottom plate 776, so that the material falls into the tank, then the electric hoist 722 moves upward, the bottom of the tank body is closed, then the tank 774 is reset along the tank horizontal moving sliding rail, then it is adjusted into the fixed ring, then it is reset through the conveying sliding rail, so as to complete the lifting and feeding, without manual feeding, after the feeding is completed, the first rotary motor 745 and the second rotary motor 748 are turned over to the horizontal state, the upper half ring is opened, the hydrogen breaking furnace transfer mechanism lifts the hydrogen breaking furnace away, moves to the upper part of the M0M1 alloy belt piece efficient cooling hydrogen breaking furnace mechanism, then falls onto the workbench of the M0M1 alloy belt piece efficient cooling hydrogen breaking furnace mechanism, the first half furnace body 717 and the second half furnace body 718 move to the hydrogen breaking furnace along the sliding rail to form a closed state, the gas distribution device evacuates the hydrogen breaking furnace body, fills hydrogen, then the hydrogen breaking furnace rotates, the stirring rod in the hydrogen breaking furnace starts to stir the material, which is beneficial to improve the speed and uniformity of hydrogen absorption of the material, the heating furnace is heated, and the gas distribution device is dehydrogenated, then the gas distribution device injects inert gas into the furnace, then the first half furnace body 717 and the second half furnace body 718 are separated, and move away from the hydrogen breaking furnace along the respective sliding rails, then the bottom water jet pipe and the side water jet pipe spray water to the hydrogen breaking furnace, after cooling, the rotation of the rotating shaft is hidden in the containing cavity by the turning motor, the hydrogen breaking furnace transfer mechanism lifts the hydrogen breaking furnace to the hydrogen breaking furnace turnover mechanism, and the above work is repeated, the whole process has high automation degree, and multiple hydrogen breaking furnaces can work at the same time, which improves the work efficiency.

[0087] When the M0M1 alloy belt piece efficient cooling hydrogen breaking furnace mechanism works, the hydrogen breaking furnace transfer mechanism moves the hydrogen breaking furnace of the M2H alloy belt piece efficient cooling hydrogen breaking furnace mechanism 75 to the hydrogen breaking furnace turnover mechanism for feeding, when the M2H alloy belt piece efficient cooling hydrogen breaking furnace mechanism works, the M3Fe efficient cooling hydrogen breaking furnace mechanism moves to the hydrogen breaking furnace turnover mechanism for feeding, and the cycle is repeated, so that three efficient cooling hydrogen breaking furnace mechanisms can use one feeding mechanism, improving the efficiency.

[0088]

[0089] From the above table, it can be seen that the cooling time is the shortest by using the hydrogen breaking device.

Claims

1. A method of producing a composite alloy powder, characterized by, Comprise the following steps: S1, smelting, raw materials of M0M1, M2H, M3Fe are melted respectively to obtain the respective alloy ribbon; S2, hydrogen breaking, the alloy ribbon of M0M1, M2H, M3Fe is put into the hydrogen breaking furnace respectively to carry out hydrogen breaking; S3, jet mill, the alloy ribbon after hydrogen breaking is respectively ground into powder in the jet mill, and M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder are obtained respectively; S4, compounding, M0M1 alloy powder, M2H alloy powder, M3Fe alloy powder are mixed to obtain composite alloy powder; Wherein M0 is Pr or Nd 1 or 2 combinations;M1 is Co, Ni, Al, Cu, Zn, Ga, Mo 1 or more combinations;M2H in M2 is Dy or Tb 1 or 2 combinations, H is hydrogen element;M3Fe, M3 is Gd, Ho, La, Ce 1 or more combinations; The mass percentage of M0M1, M2H, M3Fe three kinds of alloy powder is 20%-45%, 35-50% and 15-20% respectively.

2. The method of claim 1, wherein the composite alloy powder is prepared by a method comprising: The particle size of M0M1, M2H, M3Fe alloy powder is controlled at 0.5-1 μm, 1-3 μm, 0.5-1.5 μm respectively.

3. The method of claim 1, wherein the composite alloy powder is prepared by a process comprising: The hydrogen breaking step adopts hydrogen breaking device (7), the hydrogen breaking device (7) includes rack (70), the rack (70) is provided with lifting feeding mechanism (72), hydrogen breaking furnace turnover mechanism (74), M0M1 alloy ribbon high efficiency cooling hydrogen breaking furnace mechanism (71), M2H alloy ribbon high efficiency cooling hydrogen breaking furnace mechanism (75), M3Fe high efficiency cooling hydrogen breaking furnace mechanism (76) from left to right direction in sequence, hydrogen breaking furnace transfer mechanism (73) is arranged above M0M1 alloy ribbon high efficiency cooling hydrogen breaking furnace mechanism (71), M2H alloy ribbon high efficiency cooling hydrogen breaking furnace mechanism (75), M3Fe high efficiency cooling hydrogen breaking furnace mechanism (76).

4. The method of claim 3, wherein the powder is a composite alloy powder. The M0M1 alloy ribbon high efficiency cooling hydrogen breaking furnace mechanism (71) includes workbench (711), hydrogen breaking furnace body (712), heating furnace (713), bottom water jet pipe (714), water collecting tank (715), side water jet pipe (716), the workbench (711) is arranged on the rack (70), the hydrogen breaking furnace body (712) is placed horizontally on the top of the workbench (711), the water collecting tank (715) is arranged at the bottom of the hydrogen breaking furnace body (712) and fixed on the workbench (711), the bottom water jet pipe (714) is arranged on the water collecting tank (715), the side water jet pipe (716) is located on both sides of the hydrogen breaking furnace body (712), the heating furnace (713) includes first half furnace body (717) and second half furnace body (718) for clamping the hydrogen breaking furnace body (712) oppositely, the bottom of the first half furnace body (717) and the second half furnace body (718) is provided with sliding block (719), the workbench (711) is provided with sliding rail (720), the sliding block (719) slides on the sliding rail (720).

5. The method of claim 4, wherein the powder is a composite alloy powder. The bottom of the side water spraying pipe (716) is provided with a rotating shaft, the bottom of the side water spraying pipe (716) penetrates the rotating shaft, one side of the rotating shaft is rotatably connected with the workbench (711), and the other side is fixedly connected with a turnover motor, the motor end of the turnover motor is fixedly connected with the side wall of the workbench (711), and the bottom of the workbench (711) is provided with an accommodating cavity (725) capable of accommodating the side water spraying pipe (716).

6. The method of claim 3, wherein the composite alloy powder is prepared by a process comprising: The hydrogen furnace transfer mechanism (73) comprises a top plate (731) arranged above the workbench, a transfer sliding rail (732) arranged at the bottom of the top plate (731), a first sliding plate (733) arranged at the bottom of the transfer sliding rail (732), a distance adjusting sliding rail (735) arranged at the bottom of the first sliding plate (733), the sliding direction of the distance adjusting sliding rail (735) being perpendicular to that of the transfer sliding rail (732), a second sliding plate (736) arranged at the bottom of the distance adjusting sliding rail (735), and two lifting hooks (734) arranged at the bottom of the second sliding plate (736), the two lifting hooks (734) corresponding to the two ends of the hydrogen furnace body (712), respectively, a lifting hook electric push rod (737) arranged between the lifting hook (734) and the second sliding plate (736), the motor end of the lifting hook electric push rod (737) being fixedly connected with the second sliding plate (736), and the push rod end of the lifting hook electric push rod (737) being fixedly connected with the lifting hook (734).

7. The method of claim 3, wherein the composite alloy powder is prepared by a process comprising: The hydrogen furnace turnover mechanism (74) comprises a first up-down sliding sliding rail (741), a second up-down sliding sliding rail (742), a first up-down sliding sliding block (743), a first rotating motor (745), a control opening and closing electric push rod (746), a ring-shaped clamp (747), and a second rotating motor (748). The first up-down sliding sliding rail (741) and the second up-down sliding sliding rail (742) are arranged on the side wall of the rack (70) and are oppositely arranged. The ring-shaped clamp (747) is arranged between the first up-down sliding sliding rail (741) and the second up-down sliding sliding rail (742) and is composed of an upper half ring (740) and a lower half ring (749). The output end of the first rotating motor (745) is fixedly connected with the side wall of the lower half ring (749), the motor end of the first rotating motor (745) is fixedly connected with the first up-down sliding sliding block (743), the first up-down sliding sliding block (743) is slidably arranged on the first up-down sliding sliding rail (741), the motor end of the control opening and closing electric push rod (746) is fixedly connected with the output end of the second rotating motor (748), the motor end of the second rotating motor (748) is slidably arranged on the second up-down sliding sliding rail (742), and the push rod end of the control opening and closing electric push rod (746) is provided with a rotating plate (7461). One end of the rotating plate (7461) is hingedly connected with the control opening and closing electric push rod (746), and the other end is fixedly connected with the side wall of the lower half ring (749).

8. The method of claim 3, wherein the composite alloy powder is prepared by a process comprising: The lifting feeding mechanism (72) comprises a material tank horizontal moving slide rail (721), an electric hoist (722) and an electric hoist fixing plate (723), the material tank horizontal moving slide rail (721) is arranged on the top of the rack (70), the material tank horizontal moving slide rail (721) is provided with two, the two material tank horizontal moving slide rails (721) are arranged along the length direction of the rack (70), the electric hoist fixing plate (723) is fixed on the material tank horizontal moving slide rail (721), the electric hoist (722) is arranged on the electric hoist fixing plate (723), and the electric hoist fixing plate (723) is provided with a mounting port (724) for facilitating the up-down movement of the lifting hook of the electric hoist (722).

9. The method of claim 8, wherein the powder is a composite alloy powder. The bottom of the rack (70) is provided with a conveying trolley (77), the conveying trolley (77) comprises two parallel conveying slide rails (771), a tray (772) is slidably arranged on the conveying slide rail (771), a fixing ring (773) is fixed on the tray (772), and a material tank (774) is arranged in the fixing ring (773).

Images