Ultrasonic atomization flour mill

Abstract

The utility model provides an ultrasonic atomization powder making machine which comprises a heating module and a working module, the heating module is connected with the working module, metal particles in a solid state are converted into liquid metal in the heating module and then flow into the working module, and metal powder is formed in the working module. A vacuum induction melting mode in a crucible vacuum induction melting atomization (VIGA) powder making technology is combined with an ultrasonic vibration mode, and molten metal liquid is crushed into fine particles through high-frequency vibration. The particle size of the obtained metal powder is controlled through the ultrasonic generators with different frequencies, and the whole set of equipment is small in occupied space, simple, low in energy consumption, high in yield, low in base metal requirement and low in manufacturing cost. The method is especially suitable for metal powder testing and multi-element new material research and development in laboratories and production.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder metallurgy technical field, specifically speaking is related to a kind of ultrasonic atomization powder making machine. BACKGROUND

[0002] Metal powder is the most important link in metal part additive manufacturing industry chain, 3D printing metal powder refers to the metal particle group with size less than 1mm, including single metal powder, alloy powder and certain refractory compound powder with metallic properties.Currently, the metal powder commonly used in additive technology includes cobalt alloy, stainless steel, titanium alloy and nickel-aluminum alloy, etc.The metal powder used in additive technology not only needs to have good plasticity, but also needs to meet the requirements of fine powder particles, narrow particle size distribution, high sphericity, good fluidity and high loose density, etc.

[0003] The preparation methods of metal powder are different due to different subsequent forming processes. The metal powder for additive manufacturing is mainly concentrated in titanium alloy, high-temperature alloy, cobalt-chromium alloy and other materials. Therefore, in the preparation processes commonly used in the metallurgical powder process, such as electrolysis method, reduction method and atomization method, the electrolysis method and the reduction method have certain limitations and are not suitable for the preparation of alloy powder. The commonly used metal powder preparation methods at present include plasma rotating electrode method (PREP), plasma atomization method (PA), gas atomization method (GA) and plasma spheroidization method (PS). The common characteristics of the above listed commonly used metal powder preparation methods are that the metal raw material is first melted, and then the metal liquid formed is broken into small particles by different ways. Among them, the metal powder obtained by the rotating electrode method (PREP) mainly depends on the centrifugal force generated by the rotation of the metal rod driven by the motor speed, the size of the rod and the melting speed of the rod. The powder preparation method has high requirements for the sealing and vibration of the equipment, especially the high-speed rotating parts have high vibration stability. The plasma atomization method (PA) is to form a high-temperature plasma focus by an ion plasma torch, rapidly melt or gasify a metal wire, and disperse the ultra-fine droplets or gas mist into an atomization tower, and then exchange heat with the cooling argon gas to form ultra-fine powder. In this powder preparation method, the powder yield below 45um is very high. However, the requirement of the wire-shaped raw material limits the preparation of many difficult-to-deform alloy materials. The gas atomization method (GA) includes crucible vacuum induction melting atomization (VIGA) and crucible-free electrode induction melting gas atomization (EIGA). Compared with the powder preparation method of VIGA, the metal powder is cleaner in the EIGA powder preparation because the metal raw material does not contact any other object. Both methods use supersonic gas to break the alloy solution, and the whole preparation equipment occupies a large area and has high energy consumption. Compared with the above powder preparation methods, the powder preparation method (VIGA) has the advantages of low energy consumption, high fine powder yield, low requirement for the base material, low manufacturing cost and the like. The utility model is mainly used for testing metal powder in the laboratory and production and researching and developing new multi-element materials. The equipment requires low energy consumption, high yield, low requirement for the base material and low manufacturing cost. The metal melting method of VIGA perfectly meets the requirements of laboratory and production equipment. However, the powder preparation of VIGA needs to break the metal solution by high-speed gas. The high-speed gas generator occupies a large area and does not meet the requirements of laboratory and production equipment for space limitation. Utility model content

[0004] The utility model discloses a purpose is to the defect of the above-mentioned existing metal powder preparation method, provide a kind of ultrasonic atomization powder making machine, the vacuum induction melting mode in the vacuum induction melting atomization (VIGA) powder making technology is combined with the mode of ultrasonic vibration, using high frequency vibration breaks the melted metal liquid into small particle. The particle size of obtained metal powder is controlled by using ultrasonic generator of different frequency, the whole set of equipment occupies less space, equipment is simple, energy consumption is low, yield is high, the requirement of base material is low, manufacturing cost is low. Especially suitable for laboratory and production metal powder test and multi-element new material research and development.

[0005] Technical scheme

[0006] In order to realize the above technical purpose, the utility model provides a kind of ultrasonic atomization powder making machine, it is characterized by: including heating module and working module, the heating module and working module are connected, the metal particle in solid state is converted into liquid metal in heating module and flows into working module, and forms metal powder in working module;

[0007] The heating module includes heating cavity, one crucible is placed in the bottom of the heating cavity, the crucible is surrounded by the induction coil assembly, the heating cavity is closed by cavity cover, the heating cavity closed by cavity cover is arranged with locking rod, one end of the locking rod is located at the through hole one of the bottom of the crucible, and the through hole one can be closed or opened, the locking rod is connected with connecting rod mechanism, and the connecting rod mechanism can drive the locking rod to act to close or open the through hole one, the crucible is fixed on the heating cavity through graphite adapter;

[0008] The working module includes working cavity, the inlet of the working cavity is connected with the outlet of the heating cavity, the ultrasonic vibration body is installed on the working cavity, one end is located in the working cavity, and the other end extends out of the working cavity, and the graphite pot is arranged at the corresponding position below the ultrasonic vibration body for collecting the leaked metal liquid.

[0009] In one of the embodiments, the crucible and the induction coil assembly are separated by asbestos heat insulation pad two.

[0010] In one of the embodiments, the locking rod is vertically placed in the heating cavity 101 closed by cavity cover.

[0011] In one of the embodiments, the mouth of the crucible is mounted with heat insulation plate.

[0012] In one of the embodiments, the crucible is placed on asbestos heat insulation pad two.

[0013] In one of the embodiments, the asbestos heat insulation pad is provided with a through hole, one end of the graphite adapter is corresponded to the through hole one of the bottom of the crucible, and the other end extends into the working module through the through hole.

[0014] In one of the embodiments, a nozzle is provided between the crucible and the graphite adapter, one end of the through hole two in the nozzle is connected to the through hole one of the bottom of the crucible, and the other end is connected to the through hole three in the graphite adapter.

[0015] In one of the embodiments, one end of the through hole three in the graphite adapter is connected to the other end of the through hole two in the nozzle, and the other end of the through hole three in the graphite adapter is communicated to the working module.

[0016] In one of the embodiments, the ultrasonic vibration body comprises an ultrasonic generator, a transducer, an amplitude transformer, a spring sheet and a locking nut.

[0017] In one of the embodiments, the graphite pot is placed on the crucible support.

[0018] In one of the embodiments, the heating cavity and the working cavity are tightly locked together.

[0019] In one of the embodiments, a hopper is arranged at the inlet of the heating cavity, and a control valve one is arranged on the connecting pipeline between the hopper and the heating cavity.

[0020] In one of the embodiments, a collection bottle is arranged at the outlet of the working cavity.

[0021] In one of the embodiments, a discharge valve is arranged at the outlet of the working cavity.

[0022] In one of the embodiments, the heating cavity and the working cavity are filled with inert gas.

[0023] Beneficial effects

[0024] The ultrasonic atomization powder machine provided by the utility model discloses a heating module and a working module, the heating module and the working module are connected, the metal particles in solid state are converted into liquid metal in the heating module, then flow into the working module, and form metal powder in the working module, the vacuum induction melting mode in the vacuum induction melting atomization (VIGA) powder making technology is combined with the ultrasonic vibration mode, high-frequency vibration is adopted to break the melted metal liquid into small particles, the particle size of the obtained metal powder is controlled by adopting ultrasonic generators with different frequencies, the whole equipment occupies small space, the equipment is simple, energy consumption is low, yield is high, the requirement of base material is low, manufacturing cost is low, and the equipment is especially suitable for metal powder testing and multi-element new material research and development in laboratories and production. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 is a perspective view of an ultrasonic atomizing powder making machine according to an embodiment of the present application. Figure 1 Figure 2 is a front view of the ultrasonic atomizing powder making machine according to the embodiment of the present application.

[0027] Figure 3 is a top view of the ultrasonic atomizing powder making machine according to the embodiment of the present application. Figure 2 Figure 4 is a structure schematic view of the ultrasonic atomizing powder making machine according to the embodiment of the present application.

[0028] Figure 5 is an enlarged view of A in Figure 4. Figure 3

[0029] Figure 6 is an enlarged view of B in Figure 4. Figure 4 Figure 7 is an enlarged view of C in Figure 4.

[0030] Figure 5 Figure 8 is an enlarged view of D in Figure 4. Figure 4 DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely explained in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration, and do not indicate the only implementation.

[0033] ​​​Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. Example

[0036] As attached Figure 1 As shown in Figures 2 and 3, an ultrasonic atomizing powder maker includes a heating module 100 and a working module 200. The heating module 100 and the working module 200 are installed in a housing a and are connected to each other. Solid metal particles are converted into liquid metal in the heating module 100 and then flow into the working module 200, where they form metal powder.

[0037] As attached Figure 4 and 5As shown, the heating module 100 includes a heating cavity 101, a crucible 102 is placed at the bottom of the heating cavity 101, the crucible 102 is surrounded by an induction coil assembly 103, and the crucible 102 and the induction coil assembly 103 are separated by a asbestos heat insulation pad 109. The heating cavity 101 is closed by a cavity cover 104, and the heating cavity 101 closed by the cavity cover 104 is provided with a locking rod 105, in this embodiment, the locking rod 105 is vertically placed in the heating cavity 101 closed by the cavity cover 104. One end of the locking rod 105 is located at a through hole 106 at the bottom of the crucible 102, and can close or open the through hole 106, the locking rod 105 is connected with a connecting rod mechanism 107, the connecting rod mechanism 107 can drive the locking rod 105 to act so as to close or open the through hole 106, the crucible 102 is fixed on the heating cavity 101 through a graphite adapter 108; a heat insulation plate 110 is installed at the mouth of the crucible 102. The crucible 102 is placed on an asbestos heat insulation pad 111. The asbestos heat insulation pad 111 is provided with a via hole 112, one end of the graphite adapter 108 corresponds to the through hole 106 at the bottom of the crucible 102, and the other end penetrates through the via hole 112 and extends into the working module 200. A nozzle 113 is arranged between the crucible 102 and the graphite adapter 108, a through hole 114 in the nozzle 113 is connected with the through hole 106 at the bottom of the crucible 102 at one end, and is connected with a through hole 115 in the graphite adapter 108 at the other end. One end of the through hole 115 in the graphite adapter 108 is connected with the other end of the through hole 114 in the nozzle 113, and the other end of the through hole 115 in the graphite adapter 108 is communicated to the working module 200.

[0038] The working module 200 includes a working cavity 201, and the heating cavity 101 and the working cavity 201 are tightly locked together. The inlet of the working cavity 201 is connected with the outlet of the heating cavity 101, an ultrasonic vibration body 202 is arranged on the working cavity 201, one end of the ultrasonic vibration body 202 is located in the working cavity 201, and the other end extends out of the working cavity 201, and a graphite pot 203 is arranged at a corresponding position below the ultrasonic vibration body 202 for collecting leaked metal liquid. The ultrasonic vibration body 202 includes an ultrasonic generator 204, a transducer 205, an amplitude transformer 206, a spring sheet 207 and a locking nut 208. The graphite pot 203 is placed on a crucible support 209.

[0039] As shown in the accompanying drawings, Figure 1 and 4As shown, the inlet of the heating cavity 101 is equipped with a hopper 210, and a control valve 211 is arranged on the connecting pipeline between the hopper 210 and the heating cavity 101. The outlet of the working cavity 201 is provided with a collecting bottle 212. The outlet of the working cavity 201 is provided with a discharging valve 213.

[0040] In the working state, the heating cavity 101 and the working cavity 201 are filled with inert gas. The heating module 100 and the working module 200 are connected in a sealed manner. In the initial state, the required working parameters are set, and manual setting is not required until the powder preparation is completed. In the powder preparation stage, metal particles of a certain shape are placed in the crucible 102 through the hopper 210, and the solid metal is converted into liquid metal by heating through the induction coil assembly 103. When the solid metal is fully melted, the operating connecting rod mechanism 107 drives the locking rod 105 to open the bottom through hole one 106 of the crucible 102, and the metal solution flows into the working cavity 201 filled with inert gas through the bottom through hole one 106 of the crucible 102. Specifically, the metal liquid flows into the working cavity 201 through the channel composed of the bottom through hole one 106 of the crucible 2, the through hole two 114 of the nozzle 113 and the through hole three 115 in the graphite adapter 108. The ultrasonic vibrator 13 in the working cavity 201 generates different vibration amplitudes by using ultrasonic generators of different frequencies. The greater the vibration amplitude, the greater the impact on the metal liquid, and the smaller the powder particle distribution interval. Because the metal liquid flowing from the heating cavity 101 cannot always act on the spring sheet 207 during the adjustment of the ultrasonic vibrator 13, the high-temperature metal liquid can burn through the cavity wall of the working cavity 201, resulting in damage to the equipment. Therefore, a crucible support 14 is arranged below the ultrasonic vibrator 13, and a graphite pot 15 is placed on the crucible support 14 to receive the flowing metal liquid. Finally, the formed metal powder is finally stored through the collecting bottle 212.

[0041] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present disclosure.

[0042] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to

[0043] The appended claims shall prevail.

Claims

1. An ultrasonic atomizing pulverizer characterized by comprising: It comprises a heating module (100) and a working module (200), the heating module (100) and the working module (200) are connected, the metal particles in solid state are converted into liquid metal in the heating module (100) and then flow into the working module (200), and the metal powder is formed in the working module (200); The heating module (100) comprises a heating cavity (101), a crucible (102) is arranged at the bottom of the heating cavity (101), the crucible (102) is surrounded by an induction coil assembly (103), a cavity cover (104) is used for sealing the heating cavity (101), the heating cavity (101) sealed by the cavity cover (104) is provided with a locking rod (105), one end of the locking rod (105) is located at a through hole (106) at the bottom of the crucible (102) and can be used for sealing or opening the through hole (106), the locking rod (105) is connected with a connecting rod mechanism (107), the connecting rod mechanism (107) can drive the locking rod (105) to act so as to seal or open the through hole (106), and the crucible (102) is fixed on the heating cavity (101) through a graphite adapter (108). The working module (200) comprises a working cavity (201), the inlet of the working cavity (201) is connected with the outlet of the heating cavity (101), an ultrasonic vibrator (202) is arranged on the working cavity (201) and one end of the ultrasonic vibrator (202) is located in the working cavity (201) and the other end of the ultrasonic vibrator (202) extends out of the working cavity (201), and a graphite pot (203) is arranged at a corresponding position below the ultrasonic vibrator (202) and is used for collecting the leaked liquid metal.

2. The ultrasonic atomizing pulverizer according to claim 1, wherein: The crucible (102) and the induction coil assembly (103) are separated by an asbestos heat insulation pad (109).

3. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The locking rod (105) is vertically arranged in the heating cavity (101) sealed by the cavity cover (104).

4. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The mouth of the crucible (102) is provided with a heat insulation plate (110).

5. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The crucible (102) is arranged on an asbestos heat insulation pad (111).

6. The ultrasonic atomizing powder manufacturing machine according to claim 5, wherein: The asbestos heat insulation pad (111) is provided with a through hole (112), one end of the graphite adapter (108) corresponds to the through hole (106) at the bottom of the crucible (102), and the other end of the graphite adapter (108) penetrates through the through hole (112) and extends into the working module (200).

7. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The crucible (102) and the graphite adapter (108) are provided with a nozzle (113), a through hole (114) in the nozzle (113) is connected with the through hole (106) at the bottom of the crucible (102) at one end and is connected with a through hole (115) in the graphite adapter (108) at the other end.

8. The ultrasonic atomizing powder manufacturing machine according to claim 7, wherein: One end of the through hole (115) in the graphite adapter (108) is connected with the other end of the through hole (114) in the nozzle (113), and the other end of the through hole (115) in the graphite adapter (108) is communicated to the working module (200).

9. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The ultrasonic vibration body (202) comprises an ultrasonic generator (204), a transducer (205), a horn (206), a spring (207) and a locking nut (208).

10. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The graphite pot (203) is placed on the crucible support (209).

11. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The heating cavity (101) and the working cavity (201) are tightly locked together.

12. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: A hopper (210) is arranged at the inlet of the heating cavity (101), and a control valve I (211) is arranged on the connecting pipeline between the hopper (210) and the heating cavity (101).

13. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: A collection bottle (212) is arranged at the outlet of the working cavity (201).

14. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: A discharge valve (213) is arranged at the outlet of the working cavity (201).

15. The ultrasonic atomizing powder manufacturing machine according to claim 1, wherein: The heating cavity (101) and the working cavity (201) are filled with inert gas.

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