A method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys

Abstract

This invention discloses a method for preventing agglomeration and uniformly mixing materials for manufacturing high-strength and high-toughness molybdenum alloys, relating to the field of powder metallurgy technology. The method includes the following steps: S1, preparing materials; S2, preparing a solution; S3, adding materials to a rotating ultrasonic atomizing homogenizing device; S4, mixing materials to obtain a mixed powder; S5, drying: drying the mixed powder obtained in step S4 to obtain a molybdenum alloy mixture with uniform alloy element addition; processing the molybdenum alloy mixture obtained in step S5 through subsequent pressing, sintering, and rolling processes to obtain a high-strength and high-toughness molybdenum alloy. This invention is rationally designed, provides uniform mixing, is easy to control, and is suitable for various production scales, thus having broad application prospects. The resulting high-strength and high-toughness molybdenum alloy has a tensile strength greater than 1100 MPa and an elongation greater than 7%, exhibiting excellent comprehensive performance.

Description

Technical Field

[0001] This invention relates to the field of powder metallurgy technology, and more specifically to the field of anti-agglomeration uniform mixing method for manufacturing high-strength and high-toughness molybdenum alloys. Background Technology

[0002] Molybdenum is a refractory rare metal with high-temperature strength and hardness, a high melting point, good electrical and thermal conductivity, a low coefficient of thermal expansion, and excellent thermal shock and fatigue resistance. It is widely used in metallurgy, petroleum, chemical, machinery, aerospace, steel industry, nuclear energy technology, and many other fields. However, its low recrystallization temperature, high brittleness, and low room-temperature strength limit its applications. Alloying is one of the important ways to improve its properties. Various fields have an urgent need for high-strength, high-toughness molybdenum alloys; therefore, improving the product quality and manufacturing process of molybdenum alloys is essential.

[0003] In the production of molybdenum alloys using powder metallurgy, mixing is the most critical step among a series of processes including mixing, pressing, sintering, and rolling. The uniformity of the mixture directly affects the performance of the product. Various mixing methods have been widely used in material preparation. However, due to increasingly stringent requirements for the properties of the resulting materials, poor uniformity in the mixture can severely impair the final performance of the material. Existing patents disclose the following technologies:

[0004] Patent publication number CN113637884A, entitled "A Novel High-Performance Molybdenum Alloy and Its Preparation Method," discloses the following: A novel high-performance molybdenum alloy and its preparation method, comprising the following steps: obtaining commercially available pure molybdenum powder for preparing the molybdenum alloy; adding a predetermined weight percentage of titanium particles and / or zirconium particles to the commercially available pure molybdenum powder to obtain a molybdenum powder mixture; stirring the molybdenum powder mixture using a three-dimensional vibration mixer to ensure uniform mixing of all components; and melting the uniformly mixed molybdenum powder mixture using selective laser melting technology to obtain the novel high-performance molybdenum alloy. This invention, by adding titanium particles and / or zirconium particles to the commercially available pure molybdenum powder used for preparing the molybdenum alloy, allows the microscopic titanium and / or zirconium elements to be uniformly dissolved into the Mo alloy, thereby eliminating hot cracks between Mo alloy grains and improving the strength of the Mo alloy itself, thus preparing a near-fully dense, high-performance molybdenum alloy.

[0005] Patent publication number CN102839310A, entitled "An Ultrasonic Humidification Mixing Method for Manufacturing High-Strength and High-Toughness Molybdenum Alloys," discloses the following: An ultrasonic humidification mixing method for manufacturing high-strength and high-toughness molybdenum alloys involves mixing molybdenum powder and other alloy powder raw materials according to a formula ratio, then loading the mixture into a powder sieve of an ultrasonic humidification device. A dopant is dissolved in a liquid medium and loaded into the ultrasonic humidification device. The ultrasonic humidification device is turned on simultaneously with a stirring and vibrating screen, allowing the liquid medium to be atomized and sprayed into the powder sieve, ensuring thorough contact and mixing with the alloy powder. After mixing, the mixture is dried to obtain a uniformly mixed molybdenum alloy mixture. This method features a reasonable design, simple equipment, easy control, and suitability for industrial production. The molybdenum alloy mixture obtained using this method can be processed through subsequent pressing, sintering, and rolling processes to manufacture high-strength and high-toughness molybdenum alloys.

[0006] The solid-solid mixing machines disclosed in the aforementioned patents are mostly prone to problems such as agglomeration and the introduction of impurities, resulting in poor mixing uniformity. When it comes to solid-liquid mixing, manual stirring and mixing are mostly carried out in the laboratory, which is time-consuming, labor-intensive, and results in poor mixing uniformity. Existing solid-liquid mixing equipment also suffers from poor mixing uniformity because it cannot fully contact the solid powder with the solution. Moreover, it is prone to agglomeration that causes a sharp decline in powder performance. Ultimately, these factors lead to uneven particle size and low sintering activity in the prepared products, which greatly reduces the overall performance of molybdenum alloy products. Summary of the Invention

[0007] The purpose of this invention is to solve the technical problem in the existing molybdenum alloy preparation process where the solid powder and solution cannot fully contact each other, resulting in poor mixing uniformity and agglomeration that easily leads to a sharp decline in powder performance. This invention provides a uniform mixing method for manufacturing high-strength and high-toughness molybdenum alloys to prevent agglomeration.

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys includes the following steps:

[0010] S1. Prepare materials: Prepare fructose, Ti(SO4)2, Zr(NO3)4, molybdenum powder and liquid medium for later use;

[0011] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to a liquid medium to prepare an alloying element solution.

[0012] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. The molybdenum powder and the alloying element solution are added to the rotating mixing chamber and the ultrasonic atomization reaction chamber of the rotating ultrasonic atomization homogenizing device, respectively.

[0013] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber, it is added to the rotating mixing chamber for rotary stirring and mixing to obtain mixed powder.

[0014] S5. Drying: The mixed powder obtained in step S4 is dried to obtain a molybdenum alloy mixture with uniform alloying elements.

[0015] Further, in step S1, the liquid medium is either water or alcohol, and the mass ratio of the liquid medium to the alloy powder is 1:50 to 1:1.

[0016] Further, in step S3, after the molybdenum powder is poured into the rotating mixing chamber, the inlet and outlet are closed, the ventilation valve is opened, and argon gas is introduced after evacuation.

[0017] Further, in step S1, the mass percentages of the chemical elements in the molybdenum powder and alloy additives are as follows: Ti: 0.01%–1.5%, Zr: 0.01%–0.30%, C: 0.01%–0.40%, La: 0.00–3.0%, Re: 0.00–0.20%, with the balance being molybdenum powder and unavoidable impurities, and the sum of the mass percentages of the chemical elements is 100%.

[0018] Furthermore, the molybdenum alloy mixture obtained in step S5 is processed through subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0019] Furthermore, the rotating ultrasonic atomization homogenization device includes a mixing chamber, an ultrasonic atomization reaction chamber disposed within the mixing chamber, a rotating body rotatably mounted outside the mixing chamber and capable of allowing materials to enter and exit the mixing chamber and to be stirred, an inlet and outlet disposed on the rotating body, and a drive mechanism for driving the rotating body to rotate. The ultrasonic atomization reaction chamber is provided with an atomization port communicating with the mixing chamber.

[0020] Specifically, it was disclosed that during operation, the mixture passing through the mixing chamber falls into the rotating body. As the rotating body revolves around the mixing chamber, its internal stirring blades also continuously stir the mixture. This dual rotational stirring improves the uniformity of the mixture. The material entering and exiting the mixing chamber and then the rotating body achieves continuous and repetitive mixing, preventing the mixture from agglomerating and further improving the uniformity of the mixture.

[0021] Furthermore, the mixing chamber includes a mixing cavity, a feed inlet located at the upper end of the mixing cavity, and a discharge inlet located at the lower end of the mixing cavity. A heated crushing vibrating screen is installed at the top of the mixing cavity below the feed inlet, and a sealing mechanism for sealing the discharge inlet is installed inside the mixing cavity.

[0022] Specifically, a preferred structure for the mixing chamber is disclosed, but other structures that can achieve the design objectives may also be used.

[0023] Furthermore, the sealing mechanism includes a baffle that is movably installed in the mixing chamber and a rotary drive mechanism that drives the baffle to rotate. When the baffle rotates to the bottom position, it seals against the discharge notch.

[0024] Specifically, this structure is the preferred structure for the sealing mechanism. Taking a cylindrical cavity as the mixing chamber and a fan-shaped baffle as an example, the rotation center of the fan-shaped baffle is located at the center of the cylindrical cavity, the diameter of the fan-shaped baffle is the same as the diameter of the cylindrical cavity, and the arc width at the bottom of the fan-shaped baffle is greater than the width of the discharge notch. This structure has the advantages of simple structure and high sealing efficiency. In addition, the sealing mechanism can also be other structures that can achieve the design effect.

[0025] Furthermore, the heated crushing vibrating screen includes a screen frame, in which a heated crusher and a screen mesh are arranged sequentially from top to bottom. The heated crusher includes a vibrating feed screen and a heating component for heating the vibrating feed screen.

[0026] Specifically, a preferred structure of a heated crushing vibrating screen is disclosed. The heated crusher can break up agglomerated materials during vibration and achieve feeding. In addition, the heating component is set to facilitate the control of the material temperature. The mesh diameter of the screen is smaller than that of the feeding screen, so that the powder entering the mixing chamber is finer and more uniform.

[0027] Furthermore, the heated crushing vibrating screen also includes an auxiliary feeding mechanism located between the heated crusher and the screen to achieve uniform feeding. The auxiliary feeding mechanism is in contact with the screen and includes a rotating mounting frame and soft bristles evenly distributed below the rotating mounting frame.

[0028] Specifically, an auxiliary feeding mechanism has been added above the screen. This mechanism prevents material from accumulating on the screen and causing blockages, and it also enables uniform, rapid, and efficient feeding, thus improving work efficiency.

[0029] Furthermore, there are one or more ultrasonic atomization reaction chambers, each located on the outer edge of the heated crushing vibrating screen, and the atomization port of each ultrasonic atomization reaction chamber located below the heated crushing vibrating screen.

[0030] Specifically, the number and layout of the ultrasonic atomization reaction chambers are disclosed. When there are multiple ultrasonic atomization reaction chambers, they are evenly distributed around the edge of the heated crushing vibrating screen. In this layout, the edge material is fully in contact with and mixed with the atomized liquid.

[0031] Furthermore, each ultrasonic atomization reaction chamber includes a lower atomization reaction generation zone and an upper air supply zone. A downward-sloping baffle is installed between the atomization reaction generation zone and the corresponding air supply zone. The atomization reaction generation zone is connected to the corresponding air supply zone, and the atomization port is located inside the corresponding air supply zone.

[0032] Specifically, the solution is atomized into extremely fine droplets by an atomizer, which are then dispersed into the mixing chamber by the air supply zone. The solid powder is then evenly sprinkled down by a heating, crushing, and uniform powder-dropping device, which ensures that the solid powder and solution are fully in contact and mixed, greatly improving the uniformity of the mixture. The heating, crushing, and uniform powder-dropping device also effectively prevents the mixture from agglomerating.

[0033] Furthermore, the rotating body includes a rotating ring rotatably sleeved on the outside of the mixing chamber and multiple stirring chambers evenly distributed circumferentially within the rotating ring. Each stirring chamber has an opening on its side that communicates with a feed inlet or a discharge outlet. Each stirring chamber is equipped with a synchronous stirring mechanism, which is driven by a drive mechanism. The rotating body is equipped with a feed inlet / outlet and a ventilation valve. The feed inlet / outlet communicates with any one of the stirring chambers, and the ventilation valve communicates with one of the stirring chambers.

[0034] Specifically, during operation, the mixture passing through the mixing chamber falls into the various stirring cavities of the rotating body. As the rotating body revolves around the mixing chamber, the stirring blades of its internal stirring components also continuously stir the mixture. This dual rotational stirring enhances the uniformity of the mixture. The material circulates into the stirring cavities through the feed notch, discharge notch, and the opening of the stirring cavity, achieving continuous and repetitive mixing, preventing material agglomeration, and further improving the uniformity of the mixture.

[0035] The mixing chamber of this design is equipped with sealing covers on the front and rear sides after it is fitted with the rotating body, which ensures good sealing performance. An air exchange valve is also installed, which supports mixing in low oxygen or other gas atmospheres for some high-requirement mixing scenarios, thereby improving the quality of mixing.

[0036] Furthermore, each stirring chamber is an elongated oval cavity composed of two tangent circles, and stirring components are provided at the two centers of the elongated oval cavity, with the two stirring components rotating in opposite directions.

[0037] Specifically, the two stirring components in the same elongated oval cavity have the same structure and rotate synchronously in opposite directions, both rotating from the edge to the center. When the stirring blades of the two stirring components rotate to the center, there is a gap with a width of 1~2mm. This design of the stirring blade width and the design of the elongated oval cavity formed by the two tangent circles are to ensure thorough stirring in the stirring cavity and avoid stirring dead corners or blind spots. This rotation direction design facilitates material feeding.

[0038] Furthermore, a base for fixing the mixing chamber is provided on one side of the mixing chamber. The base includes a base plate and an L-shaped connector. The vertical end of the L-shaped connector is fixed on the base plate, and the horizontal end of the L-shaped connector is fixedly connected to the mixing chamber. The driving mechanism is a wheel drive mechanism.

[0039] Specifically, a preferred mechanism for the base is disclosed, which has the advantages of simple structure, convenient processing and manufacturing, and strong stability.

[0040] Furthermore, the gear drive mechanism includes a drive motor fixed on the horizontal end, a main gear disposed at the output end of the motor, a rotating sleeve fixedly connected to the rotating body and movably sleeved on the horizontal end, a driven gear disposed on the rotating sleeve and meshing with the main gear, an annular internal gear disposed inside the rotating body, and a synchronous gear component that meshes with the annular internal gear to drive the two stirring components in each stirring chamber to rotate synchronously.

[0041] Specifically, a preferred structure for a wheel drive mechanism is disclosed, which has the advantages of reliable operation, high efficiency, and low operating cost.

[0042] Furthermore, the synchronizing gear component includes a second gear and a third gear respectively disposed on two stirring assemblies, the second gear and the third gear meshing, and a first gear meshing with an annular internal gear is disposed on the stirring shaft of one of the stirring assemblies.

[0043] Specifically, a preferred structure for a synchronizing gear component is disclosed, which is driven by an annular internal gear on a rotating body, reducing the number of drive mechanisms and saving space.

[0044] Working principle of the rotary ultrasonic atomization homogenizing device: Pour the prepared solution into the ultrasonic atomization reaction chamber, cover the front cover, turn the inlet and outlet to the top, pour in the molybdenum powder through the inlet and outlet, close the inlet and outlet, open the ventilation valve, evacuate and then fill with argon gas, turn on the anti-agglomeration homogenizing mixing device, the motor drives the gear mechanism to drive the rotating body, and when the rotating body rotates, it drives the stirring blade to rotate through the gear, and starts to stir evenly. The liquid medium enters the mixing chamber after being atomized by the ultrasonic atomization device, and fully contacts and mixes with the alloy powder. When the mixing is finished, put down the sealing mechanism, and the device continues to work for 15 minutes before being turned off. Rotate the inlet and outlet to the bottom to open, and then open the sealing mechanism to complete the collection of the mixed material.

[0045] The beneficial effects of the present invention are as follows:

[0046] 1. The molybdenum alloy mixture obtained by the present invention, after subsequent pressing, sintering, and rolling processes, produces a high-strength, high-toughness molybdenum alloy with a tensile strength greater than 1100 MPa and an elongation greater than 7%, exhibiting excellent comprehensive properties. This method is rationally designed, produces uniform and easily controlled mixtures, and is suitable for various production scales, thus possessing broad application prospects.

[0047] 2. The present invention uniquely atomizes the solution into extremely fine droplets through an atomizer, which are then dispersed into the mixing zone through the air supply zone. The solid powder is then evenly sprinkled down through a heating, crushing and uniform powder dropping device, which ensures that the solid powder and the solution are fully in contact and mixed, greatly improving the uniformity of the mixture. The heating, crushing and uniform powder dropping device also effectively prevents the mixture from agglomerating.

[0048] 3. During operation of the rotary ultrasonic atomization homogenizing device of the present invention, the mixture passing through the mixing chamber falls into each stirring cavity of the rotating body. As the rotating body rotates around the mixing chamber, the stirring blades of its internal stirring components also continuously stir, and the double rotation stirring improves the uniformity of the mixture. The material circulates into the stirring cavity through the feed notch, discharge notch, and the opening of the stirring cavity, realizing the continuity and repetition of the mixing, preventing the mixture from agglomerating, and further improving the uniformity of the mixing.

[0049] 4. The mixing chamber of this invention is equipped with sealing covers on the front and rear sides after it is fitted with the rotating body, which ensures good sealing performance. An air exchange valve is installed, which supports mixing in low oxygen or other gas atmospheres for some high-requirement mixing scenarios, thereby improving the quality of mixing. Attached Figure Description

[0050] Figure 1 Here is a SEM image of the molybdenum alloy mixture obtained in Example 1;

[0051] Figure 2 This is a SEM image of the fracture surface of the molybdenum alloy sample obtained after sintering in Example 1;

[0052] Figure 3 This is a SEM image of the molybdenum alloy sample obtained after sintering in Example 1;

[0053] Figure 4 Here is a SEM image of the molybdenum alloy mixture obtained in Example 2;

[0054] Figure 5 Here is a SEM image of the molybdenum alloy mixture obtained in Example 3;

[0055] Figure 6 These are the SEM and EDS images of the molybdenum alloy mixture obtained in Example 4;

[0056] Figure 7 These are the SEM and EDS images of the molybdenum alloy mixture obtained in Example 5;

[0057] Figure 8 These are the SEM and EDS images of the molybdenum alloy mixture obtained in Example 6;

[0058] Figure 9 This is a schematic diagram of the main structure of the rotating ultrasonic atomization homogenization device;

[0059] Figure 10 This is a schematic diagram of the gear transmission structure between the rotating body and the stirring blades;

[0060] Figure 11 This is a schematic diagram of the motor drive section;

[0061] Figure 12 This is a schematic diagram of a heating, crushing, and uniform powder feeding device;

[0062] Reference numerals: 1-Rotating body, 2-Heated crushing vibrating screen, 3-Mixing chamber, 4-Ultrasonic atomization reaction chamber, 5-Stirring assembly, 6-Ventilation valve, 7-Air supply zone, 8-Atomization reaction generation zone, 9-Blocking mechanism, 10-Inlet / outlet, 11-Annular internal gear, 12-First gear, 13-Second gear, 14-Third gear, 15-Main gear, 16-Motor, 17-Other lines and control system, 18-Base, 19-Heated crusher, 20-Auxiliary feeding mechanism, 21-Screen. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0064] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0065] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0066] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0067] like Figure 4-7 As shown, the structure of the rotating ultrasonic atomization homogenization device mainly used in this invention is as follows:

[0068] The rotating ultrasonic atomization homogenization device includes a mixing chamber 3, an ultrasonic atomization reaction chamber 4 disposed in the mixing chamber 3, a rotating body 1 rotatably sleeved outside the mixing chamber 3 and capable of enabling material to enter and exit the mixing chamber 3 and to stir the material, an inlet and outlet 10 disposed on the rotating body 1, and a drive mechanism for driving the rotating body 1 to rotate. The ultrasonic atomization reaction chamber 4 is provided with an atomization port communicating with the mixing chamber 3.

[0069] Specifically, it is disclosed that during operation, the mixture passing through the mixing chamber 3 falls into the rotating body 1. As the rotating body 1 rotates around the mixing chamber 3, the stirring blades inside it also continuously stir the mixture. This dual rotational stirring improves the uniformity of the mixture. The material enters and exits from the mixing chamber 3 into the rotating body 1, achieving continuous and repetitive mixing, preventing the mixture from agglomerating, and further improving the uniformity of the mixture.

[0070] The mixing chamber 3 includes a mixing cavity, a feed inlet located at the upper end of the mixing cavity, and a discharge inlet located at the lower end of the mixing cavity. A heated crushing vibrating screen 2 is located at the top of the mixing cavity below the feed inlet, and a sealing mechanism 9 for sealing the discharge inlet is provided inside the mixing cavity.

[0071] Specifically, a preferred structure of the mixing chamber 3 is disclosed, but other structures that can achieve the design objectives may also be disclosed.

[0072] The sealing mechanism 9 includes a baffle that is movably installed in the mixing chamber 3 and a rotary drive mechanism that drives the baffle to rotate. When the baffle rotates to the bottom position, it seals with the discharge notch.

[0073] Specifically, this structure is the preferred structure of the sealing mechanism 9. Taking the mixing cavity as a cylindrical cavity and the baffle cross-section as a fan shape as an example, the rotation center of the fan-shaped baffle is located at the center of the cylindrical cavity, the diameter of the fan-shaped baffle is the same as the diameter of the cylindrical cavity, and the arc width at the bottom of the fan-shaped baffle is greater than the width of the discharge notch. This structure has the advantages of simple structure and high sealing efficiency. In addition, the sealing mechanism 9 can also be other structures that can achieve the design effect.

[0074] The heated crushing vibrating screen 2 includes a screen frame, and a heated crusher 19 and a screen 21 are arranged sequentially from top to bottom inside the screen frame. The heated crusher 19 includes a vibrating feed screen and a heating component for heating the vibrating feed screen.

[0075] Specifically, a preferred structure of the heated crushing vibrating screen 2 is disclosed. The heated crusher 19 can break up agglomerated materials and discharge them during the vibration process. In addition, the heating component is set to facilitate the control of the material temperature. The mesh diameter of the screen 21 is smaller than that of the discharge screen, so that the powder entering the mixing chamber is finer and more uniform.

[0076] The heated crushing vibrating screen 2 also includes an auxiliary feeding mechanism 20 located between the heated crusher 19 and the screen 21 to achieve uniform feeding. The auxiliary feeding mechanism 20 is in contact with the screen 21 and includes a rotating mounting frame and soft bristles evenly distributed below the rotating mounting frame.

[0077] Specifically, an auxiliary feeding mechanism 20 has been added above the screen 21. The auxiliary feeding mechanism 20 prevents material from accumulating on the screen 21 and causing material blockage, and can achieve uniform and fast efficiency, thus improving work efficiency.

[0078] There are one or more ultrasonic atomizing reaction chambers 4, each ultrasonic atomizing reaction chamber 4 is located on the outer edge of the heated crushing vibrating screen 2, and the atomizing port of each ultrasonic atomizing reaction chamber 4 is located below the heated crushing vibrating screen 2.

[0079] Specifically, the number and layout of the ultrasonic atomizing reaction chambers 4 are disclosed. When there are multiple ultrasonic atomizing reaction chambers 4, the multiple ultrasonic atomizing reaction chambers 4 are evenly distributed around the edge of the heated crushing vibrating screen 2. In this layout, the edge material and the atomized liquid are fully in contact and mixed.

[0080] Each ultrasonic atomization reaction chamber 4 includes a lower atomization reaction generation zone 8 and an upper air supply zone 7. A downward inclined baffle is provided between the atomization reaction generation zone 8 and the corresponding air supply zone 7. The atomization reaction generation zone 8 is connected to the corresponding air supply zone 7, and the atomization port is located inside the corresponding air supply zone 7.

[0081] Specifically, the solution is atomized into extremely fine droplets by an atomizer, and then dispersed into the mixing chamber 3 by the air supply zone 7. The solid powder is then evenly sprinkled down by a heating, crushing and uniform powder dropping device, so that the solid powder and solution can fully contact and mix, greatly improving the uniformity of mixing. The heating, crushing and uniform powder dropping device also effectively prevents the mixture from agglomerating.

[0082] The rotating body 1 includes a rotating ring rotatably sleeved on the outside of the mixing chamber 3 and multiple stirring chambers evenly distributed around the circumference of the rotating ring. Each stirring chamber has an opening on its side that communicates with a feed gap or a discharge gap. Each stirring chamber is equipped with a synchronous stirring mechanism, which is driven by a drive mechanism. The rotating body 1 is equipped with a feed inlet / outlet 10 and a ventilation valve 6. The feed inlet / outlet 10 communicates with any one of the stirring chambers, and the ventilation valve 6 communicates with one of the stirring chambers.

[0083] Specifically, during operation, the mixture passing through the mixing chamber 3 falls into each stirring cavity of the rotating body 1. As the rotating body 1 rotates around the mixing chamber 3, the stirring blades of its internal stirring component 5 also continuously stir, and the double rotation stirring improves the uniformity of the mixture. The material circulates into the stirring cavity through the feed notch, discharge notch, and the opening of the stirring cavity, realizing the continuity and repetition of the mixing, preventing the mixture from agglomerating, and further improving the uniformity of the mixture.

[0084] In this design, the mixing chamber 3 is fitted with sealing covers on the front and rear sides after cooperating with the rotating body 1, ensuring good sealing performance. An air exchange valve 6 is installed, which supports mixing in low oxygen or other gas atmospheres for some high-requirement mixing scenarios, thereby improving the quality of mixing.

[0085] Each stirring chamber is an elongated oval cavity composed of two tangent circles. A stirring component 5 is installed at the center of each of the two elongated oval cavities, and the two stirring components 5 rotate in opposite directions.

[0086] Specifically, the two stirring components 5 in the same elongated oval cavity have the same structure and rotate synchronously in opposite directions, both rotating from the edge to the center. When the stirring blades of the two stirring components 5 rotate to the center, there is a gap with a width of 1~2mm. This design of the stirring blade width and the design of the elongated oval cavity formed by the two tangent circles are to ensure thorough stirring in the stirring cavity and avoid stirring dead corners or blind spots. This rotation direction design facilitates material feeding.

[0087] A base 18 for fixing the mixing chamber 3 is provided on one side. The base 18 includes a base 18 plate and an L-shaped connector. The vertical end of the L-shaped connector is fixed on the base 18 plate, and the horizontal end of the L-shaped connector is fixedly connected to the mixing chamber 3. The driving mechanism is a wheel drive mechanism.

[0088] Specifically, a preferred mechanism for the base 18 is disclosed, which has the advantages of simple structure, convenient processing and manufacturing, and strong stability.

[0089] The gear drive mechanism includes a drive motor 16 fixed on the horizontal end, a main gear 15 located at the output end of the motor 16, a rotating sleeve fixedly connected to the rotating body 1 and movably sleeved on the horizontal end, a driven gear located on the rotating sleeve meshing with the main gear 15, an annular internal gear 11 located inside the rotating body 1, and a synchronous gear component that meshes with the annular internal gear 11 to drive the two stirring components 5 in each stirring cavity to rotate synchronously.

[0090] Specifically, a preferred structure for a wheel drive mechanism is disclosed, which has the advantages of reliable operation, high efficiency, and low operating cost.

[0091] The synchronous gear component includes a second gear 13 and a third gear respectively disposed on two stirring components 5, the second gear 13 and the third gear meshing, and a first gear 12 that meshes with an annular internal gear 11 is disposed on the stirring shaft of one of the stirring components 5.

[0092] Specifically, a preferred structure for a synchronous gear component is disclosed, which is driven by an annular internal gear 11 on the rotating body 1, thereby reducing the number of drive mechanisms and saving space.

[0093] Example 1

[0094] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0095] S1. Prepare materials: Prepare 1.200g fructose, 15.000g Ti(SO4)2, 2.260g Zr(NO3)4, 1000g molybdenum powder and 500ml alcohol medium for later use;

[0096] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to alcohol to prepare a solution with added alloying elements;

[0097] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0098] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 60 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0099] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 70°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements;

[0100] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0101] The SEM image of the molybdenum alloy mixture obtained in this embodiment is attached. Figure 1 As shown in the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0102] Based on this molybdenum alloy mixture, after subsequent pressing, sintering, and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1129 MPa and an elongation of 8.35%. The SEM image of the fracture surface of the sintered sample is attached. Figure 2 As shown in the attached SEM image, the sintered sample was obtained after sintering. Figure 3 As shown, in summary, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0103] Example 2

[0104] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0105] S1. Prepare materials: Prepare 1.200g fructose, 30.000g Ti(SO4)2, 4.520g Zr(NO3)4, 1000g molybdenum powder and 500ml water medium for later use;

[0106] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to water to prepare a solution with added alloying elements;

[0107] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0108] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 60 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0109] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 70°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements;

[0110] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0111] As can be seen from the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0112] The SEM image of the molybdenum alloy mixture obtained in this embodiment is attached. Figure 4 As shown, based on this molybdenum alloy mixture, after subsequent pressing, sintering and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1135 MPa and an elongation of 7.85%. Overall, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0113] Example 3

[0114] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0115] S1. Prepare materials: Prepare 1.800g fructose, 20.250g Ti(SO4)2, 3.690g Zr(NO3)4, 1000g molybdenum powder and 500ml alcohol medium for later use;

[0116] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to alcohol to prepare a solution with added alloying elements;

[0117] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0118] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 60 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0119] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 70°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements;

[0120] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0121] As can be seen from the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0122] The SEM image of the molybdenum alloy mixture obtained in this embodiment is attached. Figure 5 As shown, based on this molybdenum alloy mixture, after subsequent pressing, sintering and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1156 MPa and an elongation of 8.12%. Overall, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0123] Example 4

[0124] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0125] S1. Prepare materials: Prepare 1.200g fructose, 15.000g Ti(SO4)2, 2.260g Zr(NO3)4, 1000g molybdenum powder and 500ml alcohol medium for later use;

[0126] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to alcohol to prepare a solution with added alloying elements;

[0127] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0128] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 180 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0129] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 70°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements;

[0130] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0131] The SEM and EDS images of the molybdenum alloy mixture obtained in this embodiment are attached. Figure 6 As shown in the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0132] Based on this molybdenum alloy mixture, after subsequent pressing, sintering and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1253 MPa and an elongation of 7.86%. Overall, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0133] Example 5

[0134] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0135] S1. Prepare materials: Prepare 1.200g fructose, 15.000g Ti(SO4)2, 2.260g Zr(NO3)4, 1000g molybdenum powder and 500ml alcohol medium for later use;

[0136] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to alcohol to prepare a solution with added alloying elements;

[0137] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0138] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 60 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0139] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 150°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements.

[0140] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0141] The SEM and EDS images of the molybdenum alloy mixture obtained in this embodiment are attached. Figure 7 As shown in the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0142] Based on this molybdenum alloy mixture, after subsequent pressing, sintering and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1238 MPa and an elongation of 7.28%. Overall, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0143] Example 6

[0144] This embodiment provides a method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, comprising the following steps:

[0145] S1. Prepare materials: Prepare 1.200g fructose, 15.000g Ti(SO4)2, 2.260g Zr(NO3)4, 500g molybdenum powder and 500ml alcohol medium for later use;

[0146] S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to alcohol to prepare a solution with added alloying elements;

[0147] S3. Adding materials to the rotating ultrasonic atomization homogenizing device: Add the molybdenum powder from step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomization homogenizing device. Add the molybdenum powder and the alloying element solution to the mixing chamber 3 of the rotating body 1 and the ultrasonic atomization reaction chamber 4 of the rotating ultrasonic atomization homogenizing device, respectively. Close the inlet and outlet, open the air exchange valve 6, evacuate the vacuum and then fill with argon gas.

[0148] S4. Material mixing to obtain mixed powder: After the alloy element solution is atomized in the ultrasonic atomization reaction chamber 4, it is added to the mixing chamber 3 of the rotating body 1 for rotary stirring and mixing. After uniform stirring and mixing for 60 minutes, mixed powder is obtained. The rotary ultrasonic atomization uniform device continues to work for 15 minutes and then is turned off. The inlet and outlet are rotated to the bottom to open, and then the baffle is opened to complete the collection of mixed powder.

[0149] S5. Drying: The mixed powder obtained in step S4 is placed in a drying oven and dried at 70°C for two hours to obtain a molybdenum alloy mixture with uniform alloying elements;

[0150] S6. The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

[0151] The SEM and EDS images of the molybdenum alloy mixture obtained in this embodiment are attached. Figure 8 As shown in the test results, the molybdenum alloy mixture obtained by the method in this embodiment is uniformly mixed and has excellent effect.

[0152] Based on this molybdenum alloy mixture, after subsequent pressing, sintering and rolling processes, the prepared molybdenum alloy sheet has a tensile strength of 1296 MPa and an elongation of 7.56%. Overall, the sample mixed by the ultrasonic atomization uniform mixing equipment has a uniform microstructure and excellent comprehensive performance, and is a high-strength and high-toughness molybdenum alloy.

[0153] Comparative Example 1

[0154] Patent CN102839310A discloses the following: An ultrasonic humidification mixing method for manufacturing high-strength, high-toughness molybdenum alloys. The method involves mixing molybdenum powder and other alloy powder raw materials according to a formula ratio, then loading the mixture into a powder sieve of an ultrasonic humidification device. A dopant is dissolved in a liquid medium and loaded into the ultrasonic humidification device. The ultrasonic humidification device is turned on simultaneously with a stirring and vibrating screen, allowing the liquid medium to be atomized and sprayed into the powder sieve, ensuring thorough contact and mixing with the alloy powder. After mixing, the mixture is dried to obtain a uniformly mixed molybdenum alloy mixture.

[0155] The molybdenum alloy mixture obtained in the comparative example was processed by subsequent pressing, sintering and rolling processes. The resulting molybdenum alloy sheet had a tensile strength of 963 MPa and an elongation of 5.98%. The microstructure of the sample prepared by this method was not uniform enough.

[0156] The table below compares the performance of Examples 1-6 and Comparative Example 1. The molybdenum alloy mixture obtained using this method, after subsequent pressing, sintering, and rolling processes, produces a high-strength, high-toughness molybdenum alloy with a tensile strength greater than 1100 MPa and an elongation greater than 7%, exhibiting excellent comprehensive performance. This method is rationally designed, produces uniformly mixed materials, is easy to control, and is suitable for various production scales, thus possessing broad application prospects.

[0157]

Claims

1. A method for preventing agglomeration and uniform mixing in the manufacture of high-strength and high-toughness molybdenum alloys, characterized in that, Includes the following steps: S1. Material Preparation: Prepare molybdenum powder, alloy additives, and a liquid medium. The alloy additives include fructose, Ti(SO4)2, and Zr(NO3)4. The liquid medium is either water or alcohol, with a mass ratio of liquid medium to alloy powder of 1:50 to 1:

1. The mass percentages of chemical elements in the molybdenum powder and alloy additives are as follows: Ti: 0.01%–1.5%, Zr: 0.01%–0.30%, C: 0.01%–0.40%, La: 0.00–3.0%, Re: 0.00–0.20%, with the balance being molybdenum powder and unavoidable impurities. The sum of the mass percentages of chemical elements is 100%. S2. Solution preparation: Add fructose, Ti(SO4)2 and Zr(NO3)4 from step S1 to a liquid medium to prepare an alloying element solution. S3. Adding materials to the rotating ultrasonic atomizing homogenizing device: Add the molybdenum powder in step S1 and the alloying element solution prepared in step S2 to the rotating ultrasonic atomizing homogenizing device. The molybdenum powder and the alloying element solution are added to the mixing chamber (3) of the rotating body (1) and the ultrasonic atomizing reaction chamber (4) of the rotating ultrasonic atomizing homogenizing device, respectively. S4. Material mixing to obtain mixed powder: The alloy element solution added to the ultrasonic atomization reaction chamber (4) is atomized and then added to the mixing chamber (3) of the rotating body (1) for rotational stirring and mixing to obtain mixed powder; S5. Drying: The mixed powder obtained in step S4 is dried to obtain a molybdenum alloy mixture with uniform alloying elements. The rotating ultrasonic atomizing uniform device includes a mixing chamber (3), an ultrasonic atomizing reaction chamber (4) disposed in the mixing chamber (3), a rotating body (1) rotatably sleeved outside the mixing chamber (3) and capable of allowing material to enter and exit the mixing chamber (3) and stirring the material, an inlet and outlet (10) disposed on the rotating body (1), and a driving mechanism for driving the rotating body (1) to rotate. The ultrasonic atomizing reaction chamber (4) is provided with an atomizing port communicating with the mixing chamber (3). The mixing chamber (3) includes a mixing cavity, a feed inlet located at the upper end of the mixing cavity, and a discharge inlet located at the lower end of the mixing cavity. A heated crushing vibrating screen (2) located below the feed inlet is provided on the top of the mixing cavity, and a sealing mechanism (9) for sealing the discharge inlet is provided inside the mixing cavity.

2. The method for preventing agglomeration and uniform mixing of materials for manufacturing high-strength and high-toughness molybdenum alloys according to claim 1, characterized in that, In step S3, after the molybdenum powder is poured into the mixing chamber (3) of the rotating body (1), the inlet and outlet (10) are closed, the ventilation valve (6) is opened, and argon gas is introduced after vacuuming.

3. The method for preventing agglomeration and uniform mixing of materials for manufacturing high-strength and high-toughness molybdenum alloys according to claim 1, characterized in that, The molybdenum alloy mixture obtained in step S5 is processed by subsequent pressing, sintering and rolling processes to obtain a high-strength and high-toughness molybdenum alloy.

4. The method for preventing agglomeration and uniform mixing of materials for manufacturing high-strength and high-toughness molybdenum alloys according to claim 1, characterized in that, The sealing mechanism (9) includes a baffle that is movably disposed in the mixing chamber (3) and a rotation drive mechanism that drives the baffle to rotate. When the baffle rotates to the bottom position, it seals with the discharge notch.

5. The method for preventing agglomeration and uniform mixing of materials for manufacturing high-strength and high-toughness molybdenum alloys according to claim 1, characterized in that, The rotating body (1) includes a rotating ring rotatably sleeved on the outside of the mixing chamber (3) and a plurality of stirring chambers evenly distributed in the rotating ring. Each stirring chamber has an opening that communicates with the feed gap or the discharge gap. Each stirring chamber is equipped with a synchronous stirring mechanism, which is driven by a driving mechanism. The rotating body (1) is equipped with a feed port (10) and a ventilation valve (6). The feed port (10) communicates with any one of the stirring chambers, and the ventilation valve (6) communicates with one of the stirring chambers.

6. The method for preventing agglomeration and uniform mixing of materials for manufacturing high-strength and high-toughness molybdenum alloys according to claim 5, characterized in that, Each of the stirring cavities is an elongated oval cavity composed of two tangent circles. A stirring component (5) is provided at the center of each of the two elongated oval cavities, and the two stirring components (5) rotate in opposite directions.

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