CN112091226A - Stable form injection apparatus - Google Patents
Stable form injection apparatus Download PDFInfo
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- CN112091226A CN112091226A CN202011183030.2A CN202011183030A CN112091226A CN 112091226 A CN112091226 A CN 112091226A CN 202011183030 A CN202011183030 A CN 202011183030A CN 112091226 A CN112091226 A CN 112091226A
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- 238000002347 injection Methods 0.000 title claims abstract description 41
- 239000007924 injection Substances 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims description 57
- 238000005507 spraying Methods 0.000 claims description 36
- 238000003860 storage Methods 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 12
- 230000000994 depressogenic effect Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract description 15
- 239000000843 powder Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000003723 Smelting Methods 0.000 abstract description 4
- 238000009689 gas atomisation Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 41
- 239000011261 inert gas Substances 0.000 description 37
- 230000007246 mechanism Effects 0.000 description 31
- 230000001965 increasing effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 239000000110 cooling liquid Substances 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
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 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
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 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
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a stable type injection device, which relates to the technical field of gas atomization powder manufacturing equipment and solves the problem that the conventional gas injection device and liquid outlet device complete the process of atomization powder manufacturing by injecting metal liquid in a smelting furnace at high pressure, and the conventional liquid outlet device is generally directly connected with the smelting furnace, so that the metal liquid received in the liquid outlet device is unstable, and the quality of a finished product of metal atomization powder manufacturing is influenced. The flow of the molten metal can be conveniently controlled.
Description
Technical Field
The invention relates to the technical field of soft magnetic alloy metallurgy, in particular to a stable type spraying device.
Background
The principle of gas atomization powder production is that after high-speed gas flow is accelerated by atomizing nozzle, the kinetic energy of gas flow is converted into surface energy of small metal liquid drops, so that the metal flow is pulverized into small metal liquid drops, and then solidified into powder in 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 gas injection device and the play liquid device are through carrying out the process of high-pressure injection in order to accomplish the atomizing powder process to the metal liquid in the smelting furnace, and current play liquid device is generally directly connected with the smelting furnace, consequently can lead to the metal liquid that receives in the play liquid device not stable enough, and then influences the finished product quality of metal atomizing powder process.
Disclosure of Invention
The invention aims to provide a stable spraying device which has the advantages that the stable state of molten metal can be obtained before the molten metal enters an atomization process, the stability and consistency of metal atomization are further improved, and the flow of the molten metal flowing from a heating device to a liquid outlet device can be controlled conveniently.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a stable form injection apparatus, includes the base, be equipped with air jet system on the base, wear to be equipped with out the liquid device on the air jet system, it spouts the cup to be connected with the connection that is used for the steady voltage on the liquid device, it spouts the cup to be connected with the heating device that can load the molten metal and carry out the heating on the cup to connect, heating device is equipped with the valve member that is used for controlling molten metal circulation and blocks with the junction of connecting spouting the cup.
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 block 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 fixing frame for stabilizing the heating container, wherein the heating container is clamped and fixed in the fixing frame.
By adopting the technical scheme, the fixing frame can be used for clamping and fixing the heating container, so that the stability of the molten metal can be improved conveniently, and the safety of the scheme can be improved conveniently.
The invention is further provided with a spraying cup groove matched with the connecting spraying cup, 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.
According to the invention, a second flow through hole is formed in the connecting spraying cup, one end of the second flow through hole is communicated with the heating device, the other end of the second flow through hole is communicated with the liquid outlet device, and a filtering layer for filtering impurities in the molten metal is arranged in the second flow through hole.
Through adopting above-mentioned technical scheme, the filter layer can be used to filter impurity in the molten metal.
The invention is further provided with a discharge hole on the main body, a connecting part is arranged on the end part of the main body, which is provided with the discharge hole, a first flow guide groove for changing the gas flow direction of the gas outlet of the gas nozzle is arranged on the side wall of the connecting part, and the first flow guide groove is arranged around the central axis of the main body.
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 air flow when the inert gas is sprayed out from the gas outlet, and when the inclined edge of the connecting part is parallel to the axial direction of the cross section of the gas outlet, the inert gas can be drawn close to the discharge hole of the liquid outlet device as far as possible when being sprayed out from the gas outlet, so that the isolation effect of the inert gas on the metal liquid is improved.
Simultaneously, the high-pressure inert gas flow forms fan-shaped airflow under the action of the included angle gap, the fan-shaped airflow is divided into inner airflow and outer airflow, and an annular airflow cross point is also formed at the junction of the inner airflow and the outer airflow, so that molten metal is crushed at the annular airflow cross point in an oxygen-free state and is naturally shaped into an amorphous spherical shape, and then standard amorphous powder is obtained. The cone airflow is divided into inner airflow and outer airflow, and the inner airflow easily generates reverse flow vortex under the cross action, so that the broken amorphous balls are reversely impacted, the molten metal flows back into the liquid outlet device, and the liquid outlet device is blocked.
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 metal liquid can obtain a stable state before entering the atomization process, so that the stability and consistency of metal atomization are improved conveniently;
2. the valve component can be used for conveniently controlling the flow of the molten metal, so that the stability of the molten metal is further improved;
3. the probability of metal liquid backflow can be reduced, so that the probability of blockage of the liquid outlet device is reduced;
4. simple structure and convenient production and manufacture.
In general, the invention ensures that the molten metal can obtain a more stable state before entering the atomization process, thereby being convenient for improving the stability and consistency of metal atomization and being convenient for controlling the flow of the molten metal.
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):
a stable type spraying device is shown in figures 1 to 8 and comprises a base 1, wherein an air injection device 62 is arranged on the base 1, a liquid outlet device 61 penetrates through the air injection device 62, a connecting spraying cup 7 for stabilizing pressure is connected onto the liquid outlet device 61, a heating device 5 capable of loading metal liquid and heating is connected onto the connecting spraying cup 7, and a valve component 8 for controlling the circulation and blockage of the metal liquid is arranged at the joint of the heating device 5 and the connecting spraying cup 7.
The embodiment can also be applied to the moving mechanism 3, the air injection device 62 is arranged at the movable end of the moving mechanism 3, the swing mechanism 4 is arranged below the liquid outlet device 61, the rotary tank 2 for cooling the molten metal is arranged at the movable end of the swing mechanism 4, and the rotary tank 2 is positioned below the liquid outlet 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 stable form injection apparatus, includes the base, be equipped with air jet system on the base, wear to be equipped with out the liquid device on the air jet system, its characterized in that, it spouts the cup to be connected with the connection that is used for the steady voltage on the liquid device, it spouts the cup to be connected with on the connection and to load the metal liquid and carry out the heating device who heats, heating device is equipped with the valve member that is used for controlling the metal liquid circulation and blocks with the junction of connecting spouting the cup.
2. The stable spraying device according to claim 1, wherein the valve assembly comprises a receiving portion, a first flow through hole for molten metal to flow through is formed in the receiving portion, one end of the first flow through hole is communicated with the heating device, and the other end of the first flow through hole is communicated with the connecting spraying cup; the bearing part is internally and slidably connected with a plug rod which can completely block the first flow through hole.
3. The stabilized spray device of claim 2, further comprising a valve linear actuator for actuating the movement of the stem, wherein the valve linear actuator has a movable end connected to the stem.
4. The stabilized spraying apparatus of claim 1, 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 to the spray cup, and the valve assembly is disposed at a connection position of the heating container and the spray cup.
5. The stabilized spray device according to claim 4, wherein the base has a mounting bracket for securing the heating container, and the heating container is held and fixed in the mounting bracket.
6. The stable spraying device according to claim 1, wherein the base has a cup groove matching with the connecting cup, the connecting cup is fittingly installed in the cup groove, and the outer side of the connecting cup has an insulating layer located in the cup groove.
7. The stable spraying device according to claim 1, wherein a second flow through hole is formed in the connecting cup, one end of the second flow through hole is communicated with the heating device, the other end of the second flow through hole is communicated with the liquid outlet device, and a filtering layer for filtering impurities in the molten metal is arranged in the second flow through hole.
8. The stable spraying device as claimed in claim 1, wherein the main body has a discharge hole, the end of the main body where the discharge hole is located has a connection portion, the side wall of the connection portion has a first guiding groove for changing the direction of the gas flowing from the gas outlet of the gas nozzle, and the first guiding groove is disposed around the central axis of the main body.
9. The stable spraying device according to claim 1, wherein the air injection device is arranged in a ring shape, and has an air inlet opening on the outer periphery side, an air outlet opening on the lower side of the air injection device, and the opening of the air outlet opening is obliquely arranged and faces the central axis 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.
10. The stabilized spray device according to claim 9, wherein said spray device comprises upper and lower nozzle portions which are attached to each other, said upper and lower nozzle portions being arranged in a ring shape, said connection cavity being formed between said upper and lower nozzle portions which are attached to each other; 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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| CN202011183030.2A CN112091226B (en) | 2020-10-29 | 2020-10-29 | Stable spraying device |
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| CN202011183030.2A CN112091226B (en) | 2020-10-29 | 2020-10-29 | Stable spraying device |
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