CN112122619A - Position-adjustable gas atomization powder preparation system - Google Patents
Position-adjustable gas atomization powder preparation system Download PDFInfo
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- CN112122619A CN112122619A CN202011183047.8A CN202011183047A CN112122619A CN 112122619 A CN112122619 A CN 112122619A CN 202011183047 A CN202011183047 A CN 202011183047A CN 112122619 A CN112122619 A CN 112122619A
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- 238000009689 gas atomisation Methods 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 title claims description 22
- 238000002360 preparation method Methods 0.000 title description 6
- 239000002184 metal Substances 0.000 claims abstract description 57
- 238000000889 atomisation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 51
- 230000007246 mechanism Effects 0.000 claims description 47
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 238000003860 storage Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims 5
- 238000001816 cooling Methods 0.000 abstract description 16
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 230000008025 crystallization Effects 0.000 abstract description 7
- 229910001004 magnetic alloy Inorganic materials 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 230000006911 nucleation Effects 0.000 abstract description 2
- 238000010899 nucleation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 45
- 239000011261 inert gas Substances 0.000 description 38
- 238000005507 spraying Methods 0.000 description 24
- 239000000110 cooling liquid Substances 0.000 description 11
- 230000001965 increasing effect Effects 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/086—Cooling after atomisation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0892—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting nozzle; controlling metal stream in or after the casting nozzle
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- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a position-adjustable gas atomization powder-making system, which relates to the technical field of soft magnetic alloy metallurgy and solves the problems that the common existing cooling tank and a metal atomization device are generally arranged in a fixed mode, the fixed structure can cause that the cooling speed of amorphous or nano-crystalline alloy is difficult to control, the amorphous cooling value can not be achieved, namely, the amorphous cooling value can not be achieved, finally, nucleation crystallization can only be achieved, and the processing efficiency can not be improved conveniently. So as to control the cooling speed of the amorphous or nanocrystalline alloy, and to improve the processing efficiency.
Description
Technical Field
The invention relates to the technical field of soft magnetic alloy metallurgy, in particular to a position-adjustable gas atomization powder preparation system.
Background
Atomization powder manufacturing is an important method for producing metal powder, and the principle is that after high-speed airflow is accelerated by an atomization nozzle, kinetic energy of the airflow is converted into surface energy of small metal droplets, so that the metal flow is crushed into the small metal droplets and is solidified into powder in subsequent flight. Due to the high efficiency and the controllable granularity of the prepared metal powder, the preparation method is continuously concerned by the field of powder metallurgy. The gas atomization equipment influences the performance of the prepared metal powder to a great extent, and the atomization nozzle is a key part of the whole gas atomization equipment, so that the conversion between the kinetic energy of the airflow and the surface energy of the metal powder is realized.
The existing cooling tank and the metal atomization device are generally fixedly arranged, the cooling speed of amorphous or nanocrystalline alloy is difficult to control due to the fixed structure, and then the amorphous cooling value cannot be achieved, namely the amorphous is not achieved, finally, only nucleation and crystallization can be achieved, and the processing efficiency is not convenient to improve.
Disclosure of Invention
The invention aims to provide a position-adjustable gas atomization powder preparation system which has the advantages that the high-pressure solution flow is vertically matched with the surface side end face of a cooling liquid film through the real-time movement of an air injection device and a liquid outlet device, so that the cooling speed of amorphous or nanocrystalline alloy is controlled, the non-crystallization cooling value is further achieved, and the processing efficiency is improved.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a position adjustable gas atomization powder process system, includes moving mechanism and swing mechanism, be equipped with air jet system on moving mechanism's expansion end, wear to be equipped with out the liquid device on the air jet system, it can load the metal liquid and carry out the heating device who heats to be connected with on the liquid device, swing mechanism's expansion end is equipped with the rotatory jar that is used for the metal liquid refrigerated, rotatory jar is located the below of going out the liquid device.
By adopting the technical scheme, the rotary tank swings and rotates, and the cooling liquid in the tank forms a cooling liquid film attached to the inner side wall of the tank; the air injection device and the liquid outlet device are matched to output high-pressure molten liquid flow, so that the high-pressure molten liquid flow is injected to the surface side end face position of the cooling liquid film; the air injection device and the liquid outlet device move in real time to enable the high-pressure solution flow to be vertically matched with the surface side end face of the cooling liquid film; through the cooperation of moving mechanism and elevating system for air jet system and play liquid device can remove to suitable position, can be convenient for improve the application scope of this scheme, so that adapt to service environment and the application occasion complicated day by day. The scheme can conveniently control the cooling speed of the amorphous or nanocrystalline alloy, further achieve the non-crystallization cooling value, namely achieve the purpose of realizing non-crystallization, and facilitate the improvement of the processing efficiency.
The invention is further provided that the moving mechanism comprises a first linear moving device, a lifting mechanism is arranged on the movable end of the first linear moving device, and the air injection device, the liquid outlet device and the heating device are all arranged on the movable end of the lifting mechanism.
The invention is further provided with a valve component for controlling the circulation and the blockage of molten metal, wherein a spraying cup for pressure-stabilizing connection is connected between the heating device and the liquid outlet device, and the connecting part of the heating device and the spraying cup is provided with the valve component for controlling the circulation and the blockage of the molten metal.
By adopting the technical scheme, the metal liquid can obtain a stable state before entering the atomization process through the arrangement of the connection spray cup, so that the stability and consistency of metal atomization are improved conveniently; secondly, through set up the valve module in heating device and the junction of connecting the spout cup, the flow of flow when can be convenient for control molten metal from heating device flow to play liquid device, and then is convenient for further improve the stability of molten metal.
The valve component comprises a bearing part, a first flow through hole for the circulation of molten metal is formed in the middle of the bearing part, one end of the first flow through hole is communicated with a heating device, and the other end of the first flow through hole is communicated with a connecting spraying cup; the bearing part is internally and slidably connected with a plug rod which can completely seal the first flow through hole.
The valve linear driving mechanism is used for driving the plug rod to move, and the movable end of the valve linear driving mechanism is connected with the plug rod.
Through adopting above-mentioned technical scheme, the cock stem sliding connection just can block first flow through-hole completely in the portion of accepting, and the cock stem can pass first flow through-hole at the slip in-process promptly. Therefore, the degree of blocking the first flow through hole can be accurately controlled by controlling and adjusting the sliding distance of the plug rod in the bearing part, and the control of the flow of the molten metal is further realized. The valve linear driving mechanism is used for driving the sliding distance of the plug rod in the bearing part, and the valve linear driving mechanism is a linear cylinder so as to further improve the accuracy of controlling the sliding distance of the plug rod.
The heating device further comprises a heating container and a heating coil, wherein the heating coil is wound on the outer side wall of the heating container, the heating container is connected with the connecting spraying cup, and the valve assembly is arranged at the connecting position of the heating container and the connecting spraying cup.
By adopting the technical scheme, the heating container is a graphite crucible, and the heating coil is a coil adopting an inductive heating structure.
The invention is further provided with a spraying cup groove matched with the connecting spraying cup, wherein the connecting spraying cup is arranged in the spraying cup groove in a matching way, and the outer side of the connecting spraying cup is provided with a heat-insulating layer positioned in the spraying cup groove.
By adopting the technical scheme, the heat-insulating layer can be used for reducing the temperature lost when the molten metal flows through the connecting spray cup, so that the stability of the molten metal before entering the atomization process is further improved.
The liquid outlet device is further provided with a connecting part at the end part, a first flow guide groove for changing the flow direction of gas is formed in the side wall of the connecting part, the first flow guide groove is arranged around the central axis of the liquid outlet device, and a second flow guide groove arranged around the central axis of the liquid outlet device is formed in the bottom of the connecting part.
By adopting the technical scheme, the cone airflow is formed in the included angle gap by the high-pressure inert gas airflow, so that the molten metal can be isolated from the air, and the oxidation of the molten metal can be prevented.
The cross section of the connecting part is trapezoidal, the outer contour of the connecting part is in a round table shape, the axial direction of the cross section of the gas outlet is the same as the direction of the airflow when the inert gas is sprayed out from the gas outlet, when the bevel edge of the connecting part is axially parallel to the axial direction of the cross section of the gas outlet, the inert gas can be enabled to be close to the discharge hole of the liquid outlet device as far as possible when being sprayed out from the gas outlet, so that a conical airflow cover is formed in one side of the gas outlet by the airflow of the high-pressure inert gas, the molten metal can be isolated from the air.
Simultaneously, the high-pressure inert gas flow forms an inner layer gas flow and an outer layer gas flow under the guiding action of the gas outlet, and an annular gas flow junction arranged in an annular mode is also formed at the junction of the inner layer gas flow and the outer layer gas flow, so that the annular gas flow junction breaks molten metal in an oxygen-free state and naturally forms an amorphous spherical shape, and then standard amorphous powder is obtained.
The high-pressure inert gas flows are annularly arranged, and the inclination angle of the gas flow intersection is 30-60 degrees.
After the high-pressure inert gas flows through the first flow guide groove, the first flow guide groove guides the high-pressure inert gas flow so that the high-pressure inert gas flow breaks through the inner layer gas flow and is guided out, and the outflow of molten metal is accelerated by forming the action of gas flow suction; this scheme is through simple structure in order to realize the smooth outflow of metal liquid, both can be convenient for reduce the probability that goes out the liquid device jam, still can be convenient for reduce the manufacturing cost of this scheme.
The invention is further provided with the air injection device which is arranged in a ring shape, the periphery of the air injection device is provided with an air inlet, the lower side of the air injection device is provided with an air outlet, and an opening of the air outlet is obliquely arranged and faces to the central shaft position of the air injection device; the air injection device is internally provided with a connecting cavity communicated with the air inlet and the air outlet, a separating part is arranged in the connecting cavity, the separating part divides the connecting cavity into a first air storage chamber and a buffer chamber, and the air inlet, the connecting cavity, the first air storage chamber, the buffer chamber and the air outlet are sequentially communicated.
By adopting the technical scheme, the inert gas enters the first gas storage chamber from the gas inlet to store gas, flows into the buffer chamber after the first gas storage chamber is filled with the inert gas, and is sprayed out from the gas outlet; the first gas storage chamber can be used for increasing the gas storage amount of the inert gas at the initial stage, so that the connecting cavity is filled with the inert gas, and the pressure of the inert gas during spraying is increased; secondly, the buffer chamber is used for increasing the buffer capacity of the inert gas so as to increase the stability of the inert gas during initial spraying and improve the consistency of the inert gas during subsequent spraying, and the working stability of the inert gas spraying of the scheme can be effectively improved.
The invention further provides that the air injection device comprises an upper nozzle part and a lower nozzle part which are arranged up and down in an assembling way, the upper nozzle part and the lower nozzle part are both arranged in a ring shape, and the connecting cavity is formed between the upper nozzle part and the lower nozzle part which are fixedly assembled; the utility model discloses a buffer chamber, including last mouth portion, division portion, buffer chamber, division portion, buffer chamber, the periphery lateral wall hypomere of going up the mouth portion is around establishing and being formed with first annular depressed part, division portion circumference arranges in the upside of mouth portion down, be equipped with second annular depressed part on the lateral wall of division portion near mouth portion axis one side down, the buffer chamber is formed between first annular depressed part and second annular depressed part.
Through adopting above-mentioned technical scheme, air jet equipment adopts split type package assembly, and the equipment through last mouth and lower mouth is fixed in order to form the inside cavity structure of surge chamber, and then is convenient for reduce manufacturing cost.
In conclusion, the invention has the following beneficial effects:
1. the air injection device and the liquid outlet device move in real time to enable the high-pressure solution flow to be vertically matched with the surface side end face of the cooling liquid film,
2. so as to control the cooling speed of the amorphous or nanocrystalline alloy and further achieve the non-crystallization cooling value, so as to improve the processing efficiency;
3. the metal liquid can obtain a stable state before entering the atomization process, so that the stability and consistency of metal atomization are improved conveniently;
4. the flow of the molten metal can be conveniently controlled through the valve component, so that the stability of the molten metal is further improved;
5. the probability of metal liquid backflow can be reduced, so that the probability of blockage of the liquid outlet device is reduced;
6. simple structure and convenient production and manufacture.
In the invention, the high-pressure solution flow and the surface side end face of the cooling liquid film are vertically matched by moving the air injection device and the liquid outlet device in real time, so that the cooling speed of amorphous or nano-crystalline alloy is controlled, the non-crystallization cooling value is further achieved, and the processing efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic view showing the connection relationship between the moving mechanism, the lifting mechanism, the air injection device and the liquid outlet device in the present embodiment;
FIG. 3 is a schematic view showing the connection of the air-blowing device, the liquid-discharging device and the heating device in this embodiment;
FIG. 4 is a schematic view of a half-sectional structure of the air injection device in the present embodiment;
FIG. 5 is a schematic view of a half-section structure of the liquid outlet device in this embodiment;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a schematic structural view of the liquid outlet device in this embodiment;
FIG. 8 is a schematic view showing the connection relationship between the air injection device, the liquid outlet device and the air box in this embodiment.
Reference numerals:
1. a base; 2. rotating the tank; 3. a moving mechanism; 31. a lifting mechanism; 32. a first linear motion device; 4. a swing mechanism; 5. a heating device; 51. heating the container; 52. a heating coil; 61. a liquid outlet device; 62. an air injection device; 621. an upper mouth part; 622. a lower mouth part; 7. connecting the spraying cup; 8. a valve assembly; 81. a receiving part; 9. a stopper rod; 10. a first flow through hole; 11. a heat-insulating layer; 12. a connecting portion; 121. an inclined surface; 13. a first flow guide groove; 14. a second flow guide groove; 15. a discharge hole; 16. an air inlet; 17. a connecting cavity; 171. a first gas storage chamber; 172. a buffer chamber; 18. an air outlet; 19. a partition portion; 20. a truncated cone-shaped recess; 21. a first annular recess; 22. a second annular recess; 23. a box body; 24. installing a groove; 25. a second gas storage chamber; 26. an air inlet pipe; 27. a fixed mount; 28. spraying a cup groove; 29. a second flow through hole; 30. a filter layer; 31. a pressurizing port; 311. a first pressure increasing section; 312. a second pressure increasing section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the utility model provides a position adjustable gas atomization powder process system, as shown in fig. 1 to 8, includes moving mechanism 3 and swing mechanism 4, is equipped with air jet system 62 on the expansion end of moving mechanism 3, wears to be equipped with out liquid device 61 on the air jet system 62, is connected with on the liquid device 61 and to load the molten metal and carry out the heating device 5 that heats, is equipped with the rotatory jar 2 that is used for the molten metal refrigerated on the expansion end of swing mechanism 4, and rotatory jar 2 is located out the below of liquid device 61.
The working process and principle are as follows: specifically, the hot melting device and the air injection device 62 are combined and connected with a moving mechanism 3, and a rotating mechanism for driving the rotating tank 2 to do self-rotation movement and a swinging mechanism 4 for driving the rotating tank to do swinging angle adjustment are connected with the rotating tank; the rotary tank 2 rotates by itself in the range of 30-60 degrees in the swing angle under the swing adjustment of the swing mechanism 4 and the rotation drive of the rotating mechanism, so as to meet the requirement of forming a cooling liquid film in the tank. The moving mechanism 3 may include a lifting mechanism 31 and a translation mechanism 32, which cooperate to form the transmission movement in the XY-axis direction.
A position sensor is arranged on the combined mechanism of the hot melting device and the air injection device 62 towards the side of the tank opening of the rotary tank 2, and the position sensor can be an infrared sensor in the prior art; the position sensor senses and collects the position information of the in-tank cooling liquid film facing to the position in real time so as to analyze and confirm the position state of the surface side end face of the cooling liquid film, and the position information is sequentially fed back to the corresponding controller. Based on the program setting application of the controller, the lifting mechanism 31 and the translation mechanism 32 are driven to move in a linkage manner, so that the air injection device and the hot melting device are driven to perform position alignment adjustment, and the amorphous powder flow is output corresponding to the cooling liquid film.
The liquid outlet device 61 is a liquid outlet nozzle, the air injection device 62 is an air outlet nozzle, the liquid outlet nozzle is threaded in the air outlet nozzle, and the connecting part 12 is abutted to the inner side wall of the air outlet nozzle.
The moving mechanism 3 comprises a first linear moving device 32, a lifting mechanism 31 is arranged on the movable end of the first linear moving device 32, and the air injection device 62, the liquid outlet device 61 and the heating device 5 are all arranged on the movable end of the lifting mechanism 31. The first linear motion device 32 is a carrier cart that moves in a plane.
A spraying cup 7 for pressure stabilization connection is connected between the heating device 5 and the liquid outlet device 61, and a valve assembly 8 for controlling the flow and blockage of molten metal is arranged at the joint of the heating device 5 and the spraying cup 7.
Through the arrangement of the connecting spray cup 7, the molten metal can obtain a relatively stable state before entering the atomization process, so that the stability and consistency of metal atomization are improved conveniently; secondly, the valve component 8 is arranged at the joint of the heating device 5 and the spraying cup 7, so that the flow of the molten metal flowing from the heating device 5 to the liquid outlet device 61 can be conveniently controlled, and the stability of the molten metal can be further improved.
The valve component 8 comprises a bearing part 81, a first flow through hole 10 for the circulation of molten metal is arranged in the middle of the bearing part 81, one end of the first flow through hole 10 is communicated with the heating device 5, and the other end is communicated with the connecting spray cup 7; a plug rod 9 which can completely close the first flow through hole 10 is slidably connected in the receiving portion 81.
The embodiment comprises a valve linear driving mechanism for driving the plug rod 9 to move, and the movable end of the valve linear driving mechanism is connected with the plug rod 9.
The stopper rod 9 is slidably connected in the receiving portion 81 and can completely block the first flow through hole 10, i.e. the stopper rod 9 can pass through the first flow through hole 10 during sliding. Therefore, by controlling and adjusting the sliding distance of the plug rod 9 in the receiving portion 81, the degree of blocking the first flow through hole 10 can be accurately controlled, and the flow rate of the molten metal can be controlled. The valve linear driving mechanism is used for driving the sliding distance of the plug rod 9 in the receiving portion 81, and the valve linear driving mechanism is a linear cylinder so as to further improve the accuracy of controlling the sliding distance of the plug rod 9.
The heating device 5 comprises a heating container 51 and a heating coil 52, the heating coil 52 is wound on the outer side wall of the heating container 51, the heating container 51 is connected with the connecting spray cup 7, and the valve assembly 8 is arranged at the connecting position of the heating container 51 and the connecting spray cup 7.
The heating container 51 is a graphite crucible, and the heating coil 52 is a coil having an induction heating structure.
This embodiment is still including setting up base 1 on elevating system 31 expansion end, set up on base 1 and connect spout cup 7 assorted spout cup recess 28, connect spout cup 7 and match and install in spouting cup recess 28, connect the outside of spouting cup 7 and be equipped with the heat preservation 11 that is located spout cup recess 28.
The insulating layer 11 can be used to reduce the temperature loss of the molten metal when the molten metal flows through the connecting cup 7, so as to further improve the stability of the molten metal before entering the atomization process.
The end of the liquid outlet device 61 is provided with a connecting part 12, the outer periphery of the connecting part 12 is provided with an inclined surface 121 which is inclined towards the position of the air outlet 18, the air outlet 18 is arranged towards the inclined surface 121, and the outer wall of the inclined surface 121 is provided with a first flow guide groove 13 for changing the flow direction of the air outlet 18 of the air outlet nozzle. The inclined surface 121 is inclined at an angle of 30 to 60 degrees with respect to the central axis of the air outlet 18. The bottom of the connecting part 12 is provided with a second flow guiding groove 14 arranged around the central axis of the liquid outlet device 61. The reverse airflow of the high-pressure inert gas crossed at the central point is guided by the second diversion groove 14 to disperse the outlet airflow in the discharge hole 15, and further form the internal suction of the airflow to enable the molten metal to flow out smoothly.
The cross section of the first flow guide groove 13 is semicircular and the diameter of the first flow guide groove is 2 mm. The cross section of the second diversion groove 14 is semicircular and the diameter is 2 mm.
The high-pressure inert gas flow forms cone gas flow in the included angle gap, so that the molten metal can be isolated from air, and the oxidation of the molten metal is prevented.
The cross section of the connecting part 12 is trapezoidal, the outer contour of the connecting part 12 is in a round table shape, the axial direction of the cross section of the air outlet 18 is the same as the air flow direction when the inert gas is sprayed out from the air outlet 18, when the inclined edge of the connecting part 12 is axially parallel to the cross section of the air outlet 18, the inert gas can be close to the discharge opening of the liquid outlet device 61 as far as possible when being sprayed out from the air outlet 18, so that a conical air flow cover is formed in one side of the air outlet 18 by the high-pressure inert gas air flow, the molten metal can be isolated from the air, and the oxidation of the molten metal can.
Simultaneously, the high-pressure inert gas flow forms an inner layer gas flow and an outer layer gas flow under the guiding action of the gas outlet 18, and an annular gas flow junction arranged in an annular mode is also formed at the junction of the inner layer gas flow and the outer layer gas flow, so that the annular gas flow junction breaks molten metal in an oxygen-free state and naturally forms an amorphous spherical shape, and further standard amorphous powder is obtained.
The inclination angle of the gas flow intersection of the high-pressure inert gas flow arranged in the annular shape is 20-60 degrees.
After the high-pressure inert gas flows through the first flow guide groove 13, the first flow guide groove 13 guides the high-pressure inert gas flow so that the high-pressure inert gas flow breaks through the inner layer gas flow and is guided out, and the outflow of molten metal is accelerated by forming the action of gas flow suction; this scheme is through simple structure in order to realize the smooth outflow of metal liquid, both can be convenient for reduce the probability that goes out liquid device 61 jam, still can be convenient for reduce the manufacturing cost of this scheme.
The air injection device 62 is annularly arranged, the periphery of the air injection device 62 is provided with an air inlet 16, the lower side of the air injection device 62 is provided with an air outlet 18, and the opening of the air outlet 18 is obliquely arranged and faces to the central shaft position of the air injection device 62; a connecting cavity 17 communicated with the air inlet 16 and the air outlet 18 is formed in the air injection device 62, a partition part 19 is arranged in the connecting cavity 17, the connecting cavity 17 is divided into a first air storage chamber 171 and a buffer chamber 172 by the partition part 19, and the air inlet 16, the connecting cavity 17, the first air storage chamber 171, the buffer chamber 172 and the air outlet 18 are communicated in sequence.
The inert gas enters the first gas storage chamber 171 from the gas inlet 16 for gas storage, and when the first gas storage chamber 171 is filled with the inert gas, the inert gas flows into the buffer chamber 172 and is finally sprayed out from the gas outlet 18; the first gas storage chamber 171 can be used to increase the initial gas storage amount of the inert gas, so that the connecting cavity 17 is filled with the inert gas, and the pressure of the inert gas during spraying is increased; secondly, the buffer chamber 172 is used to increase the buffer amount of the inert gas, so as to increase the stability of the inert gas during the initial spraying, improve the consistency of the inert gas during the subsequent spraying, and effectively improve the working stability of the inert gas spraying of the scheme.
The air injection device 62 comprises an upper nozzle 621 and a lower nozzle 622 which are arranged up and down in an attached manner, the upper nozzle 621 and the lower nozzle 622 are both arranged in a ring shape, and the connecting cavity 17 is formed between the fixed upper nozzle 621 and the fixed lower nozzle 622; a first annular recess 21 is formed around a lower section of the outer peripheral side wall of the upper nozzle 621, the partition 19 is circumferentially disposed on an upper side of the lower nozzle 622, a second annular recess 22 is formed on a side wall of the partition 19 on a side close to a central axis of the lower nozzle 622, and the buffer chamber 172 is formed between the first annular recess 21 and the second annular recess 22.
The air injection device 62 adopts a split assembly structure, and is fixed by assembling the upper nozzle 621 and the lower nozzle 622 to form an internal cavity structure of the buffer chamber 172, thereby facilitating to reduce the production and manufacturing costs.
In the embodiment, the diameter of the air inlet 16 is 10-14 mm, and the width of the cross section opening of the air outlet 18 is 0.5-3 mm. The inclination angle of the air outlet 18 relative to the central axis of the air injection device 62 is 30-60 degrees.
The connecting chamber 17 is provided with a pressurizing port 31 for pressurizing the gas at a position close to the gas outlet 18. The pressurizing port 31 includes a first pressurizing section 311 having a circular truncated cone shape in cross section and a second pressurizing section 312 having a rectangular square shape in cross section, the first pressurizing section 311 is connected to the buffer chamber 172, and the first pressurizing section 311 is smoothly connected to the second pressurizing section 312.
The base 1 is provided with a box body 23 and an air injection device 62, the box body 23 is provided with a mounting groove 24 matched with the outer contour of the air injection device 62, and the air injection device 62 is mounted in the mounting groove 24 in a matching manner. The side wall of the mounting groove 24 close to the air inlet 16 is provided with a second air storage chamber 25 communicated with the first air storage chamber 171, an air inlet pipe 26 communicated with an external air source is inserted at the side of the box body 23, and the air inlet pipe 26 is communicated with the second air storage chamber 25.
In this embodiment, the molten metal refers to an amorphous or nanocrystalline alloy liquid, and the present solution is mainly applied to the preparation of amorphous or nanocrystalline alloy powder, but is not limited thereto.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a position adjustable gas atomization powder process system, its characterized in that, includes moving mechanism and swing mechanism, be equipped with air jet system on moving mechanism's the expansion end, wear to be equipped with out the liquid device on the air jet system, it is connected with the heating device that can load the molten metal and carry out the heating to go out the liquid device, swing mechanism's expansion end is equipped with the rotatory jar that is used for the molten metal refrigerated, rotatory jar is located the below of going out the liquid device.
2. The system of claim 1, wherein the moving mechanism comprises a first linear moving device, a lifting mechanism is disposed on a movable end of the first linear moving device, and the gas injection device, the liquid outlet device, and the heating device are disposed on a movable end of the lifting mechanism.
3. The gas-atomizing pulverizing system with adjustable position of claim 1, wherein a spray cup for pressure-stabilized connection is connected between the heating device and the liquid outlet device, and a valve assembly for controlling the flow and blockage of the molten metal is disposed at the connection between the heating device and the spray cup.
4. The powder manufacturing system of claim 3, wherein the valve assembly comprises a receiving portion, a first flow hole for the molten metal to flow through is formed in the receiving portion, one end of the first flow hole is connected to the heating device, and the other end of the first flow hole is connected to the cup; the bearing part is internally and slidably connected with a plug rod which can completely seal the first flow through hole.
5. The system of claim 4, further comprising a valve linear actuator for driving the plug rod to move, wherein the movable end of the valve linear actuator is connected to the plug rod.
6. The system of claim 3, wherein the heating device comprises a heating container and a heating coil, the heating coil is wound on an outer sidewall of the heating container, the heating container is connected with the spray cup, and the valve assembly is disposed at a connection position of the heating container and the spray cup.
7. The powder pulverizing system by gas atomization with adjustable position of claim 3, wherein the movable end of the moving mechanism is equipped with a cup groove matching with the connecting cup, the connecting cup is installed in the cup groove, and the outside of the connecting cup is equipped with an insulating layer in the cup groove.
8. The powder pulverizing system by gas atomization with adjustable position of claim 1, wherein the end of the liquid outlet device is provided with a connecting part, the sidewall of the connecting part is opened with a first flow guiding groove for changing the gas flow direction, the first flow guiding groove is arranged around the central axis of the liquid outlet device, and the bottom of the connecting part is opened with a second flow guiding groove arranged around the central axis of the liquid outlet device.
9. The powder pulverizing system by position-adjustable gas atomization of claim 1, wherein the gas-injection device is arranged in a ring shape and has an air inlet opening on its outer circumference, an air outlet opening is formed on the lower side of the gas-injection device, and the opening of the air outlet opening is obliquely arranged and faces the central axis of the gas-injection device; the air injection device is internally provided with a connecting cavity communicated with the air inlet and the air outlet, a separating part is arranged in the connecting cavity, the separating part divides the connecting cavity into a first air storage chamber and a buffer chamber, and the air inlet, the connecting cavity, the first air storage chamber, the buffer chamber and the air outlet are sequentially communicated.
10. The powder pulverizing system by position-adjustable atomization of claim 9, wherein the air-injecting device includes an upper nozzle portion and a lower nozzle portion which are arranged in an up-and-down attachment manner, the upper nozzle portion and the lower nozzle portion are arranged in a ring shape, and the connecting cavity is formed between the fixed upper nozzle portion and the fixed lower nozzle portion; the utility model discloses a buffer chamber, including last mouth portion, division portion, buffer chamber, division portion, buffer chamber, the periphery lateral wall hypomere of going up the mouth portion is around establishing and being formed with first annular depressed part, division portion circumference arranges in the upside of mouth portion down, be equipped with second annular depressed part on the lateral wall of division portion near mouth portion axis one side down, the buffer chamber is formed between first annular depressed part and second annular depressed part.
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Cited By (1)
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