Device for preparing hydrogen absorption titanium alloy powder

Abstract

The utility model relates to the technical field of titanium alloy preparation, in particular to a device for preparing hydrogen absorption titanium alloy powder. Comprising a hydrogen generator and a tubular furnace, the tubular furnace is provided with a reaction channel, and an output port of the hydrogen generator is communicated with the reaction channel through a gas delivery pipe; a box body is arranged in the reaction channel, the box body is provided with a feeding port, a cover body covering the feeding port is arranged on the box body, through holes communicated with an inner cavity of the box body are formed in the outer wall of the box body and / or the outer wall of the cover body, a gauze layer is arranged in the box body, and titanium alloy powder is arranged in the gauze layer. According to the utility model, the box body is arranged in the reaction channel, the through holes communicated with the inner cavity of the box body are formed in the outer wall of the box body and / or the cover body, the gauze layer is arranged in the box body, and the titanium alloy powder is coated by the gauze layer, so that the titanium alloy powder is prevented from flowing in the reaction channel; and meanwhile, the conveying speed of the hydrogen into the reaction channel can be increased, so that the titanium metal powder can react more quickly.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy preparation technology, specifically to an apparatus for preparing hydrogen-absorbing titanium alloy powder. Background Technology

[0002] The heat treatment technology for titanium alloys uses hydrogen removal to replace traditional heating and cooling heat treatment. Hot hydrogen treatment effectively solves the problem that traditional heat treatment is not suitable for titanium alloys, and has excellent microstructure refinement effects, making it a very promising heat treatment method.

[0003] Hydrogen removal processing technology utilizes the reversible transformation principle of hydrogen in titanium alloys. First, hydrogen diffuses into the alloy's interior. Then, through a series of subsequent treatments, hydrogen alters the alloy's phase transformation kinetics, improving its phase composition and microstructure, ultimately enhancing its properties. After the material has been processed to a specific target, vacuum annealing is used to remove the hydrogen.

[0004] There are two main methods for hydrogen-containing treatment of powders. One method involves thermally hydrogenating the raw titanium alloy material (bars, plates, castings) and then grinding it into powder to obtain hydrogen-containing powder. The other method involves directly thermally hydrogenating the titanium alloy powder to obtain hydrogen-containing powder. However, directly thermally hydrogenating titanium alloy powder poses a safety hazard because high-purity hydrogen needs to be introduced into the tube furnace during the heating process, which may cause powder flow, leading to powder contamination of the furnace wall and dust explosion. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an apparatus for preparing hydrogen-absorbing titanium alloy powder, which avoids the titanium alloy powder from flowing and improves the preparation efficiency of titanium alloy powder.

[0006] The technical solution adopted by this utility model to solve its technical problem is an apparatus for preparing hydrogen-absorbing titanium alloy powder, including a hydrogen generator and a tube furnace. The tube furnace is provided with a reaction channel, and the output port of the hydrogen generator is connected to the reaction channel through a gas supply pipe. At least one box is provided in the reaction channel, the axis of the box is parallel to the axis of the reaction channel, the box has a feed port, and a cover is provided on the box to cover the feed port. The outer wall of the box and / or the cover is provided with a through hole communicating with the inner cavity of the box. A gauze layer is provided in the box, and titanium alloy powder is placed in the gauze layer.

[0007] Furthermore, the box body includes a cylindrical tube with openings at both ends, one of which is sealed by an end plate, and the other opening forms a feed inlet.

[0008] Furthermore, the outer surface of the cylinder is provided with external threads, and the cover is provided with an internal threaded hole that mates with the external threads.

[0009] Furthermore, the end plate, the cylinder, and the cover are all provided with through holes; the cylinder has multiple through holes, which are evenly arranged along the circumference of the cylinder.

[0010] Furthermore, a base is provided below the tubular furnace, and a telescopic device is provided at the end of the tubular furnace near the gas supply pipe. One end of the telescopic device is hinged to the base, and the other end is hinged to the bottom of the tubular furnace. The end of the tubular furnace away from the gas supply pipe is hinged to the base. The center line of rotation of the tubular furnace is perpendicular to the center line of the reaction channel.

[0011] Furthermore, the reaction channel is provided with an installation groove extending along the axis of the reaction channel. A limiting plate is provided in the installation groove. The upper surface of the limiting plate abuts against the box body. The end of the limiting plate near the gas supply pipe is hinged to the installation groove. A spring is provided on the lower surface of the limiting plate. One end of the spring is fixedly connected to the lower surface of the limiting plate, and the other end is fixedly connected to the bottom wall of the installation groove.

[0012] Furthermore, the diameter of the titanium alloy powder is greater than 38 micrometers, and the material of the gauze layer is 400-800 mesh gauze.

[0013] The beneficial effects of this utility model are as follows: by setting a box in the reaction channel, and setting a through hole on the outer wall of the box and / or the cover to connect the inner cavity of the box, and setting a gauze layer in the box, the titanium alloy powder is covered by the gauze layer, which avoids the flow of titanium alloy powder in the reaction channel, and at the same time increases the rate of hydrogen delivery to the reaction channel, so that the titanium metal powder can react faster. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection between the box body and the lid;

[0016] Figure 3 This is a sectional view of the box.

[0017] Reference numerals in the attached drawings: 1-Hydrogen generator; 2-Tube furnace; 3-Reaction channel; 4-Gas delivery pipe; 5-Box body; 501-Cylinder body; 502-End plate; 503-Feed inlet; 504-Gauze layer; 505-Titanium alloy powder; 6-Cover body; 7-Through hole; 8-Base; 9-Telescopic device; 10-Mounting groove; 11-Limiting plate; 12-Spring. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] like Figures 1-3 As shown, this utility model discloses an apparatus for preparing hydrogen-absorbing titanium alloy powder, comprising a hydrogen generator 1 and a tubular furnace 2. The tubular furnace 2 is provided with a reaction channel 3, and the output port of the hydrogen generator 1 is connected to the reaction channel 3 through a gas supply pipe 4. At least one box 5 is provided inside the reaction channel 3, the axis of the box 5 is parallel to the axis of the reaction channel 3, the box 5 has a feed inlet 503, and a cover 6 is provided on the box 5 to cover the feed inlet 503. A through hole 7 communicating with the inner cavity of the box 5 is provided on the outer wall of the box 5 and / or the cover 6. A gauze layer 504 is provided inside the box 5, and titanium alloy powder 505 is provided inside the gauze layer 504.

[0020] The hydrogen generator 1 generates hydrogen gas, which is output through an output pipe to the reaction channel 3 of the tube furnace 2. The tube furnace 2 heats the titanium alloy powder 505 in the reaction channel 3, causing the titanium alloy powder 505 to react with the hydrogen gas. The reaction channel 3 has a circular cross-section. The box 5 holds the titanium alloy powder 505 to be prepared, which is placed in the inner cavity of the box 5 through the feed port 503. The cover 6 forms a relatively sealed space within the inner cavity of the box 5, preventing the gauze layer 504 from slipping out. The box 5 and the cover 6 can be connected by adhesive or bolts. The outer wall of the box 5 and / or the cover 6 has a through hole 7 connecting to the inner cavity of the box 5. The through hole 7 can be made on the box 5 or the cover 6. 7. Alternatively, through holes 7 can be made on the box body 5 or the cover body 6. The through holes 7 can be circular or square, etc. The through holes 7 are connected to the inner cavity of the box body 5. The function of the through holes 7 is to facilitate the entry of hydrogen into the inner cavity of the box body 5. The function of the gauze layer 504 is to prevent the titanium alloy powder 505 from flowing out. During preparation, the titanium alloy powder 505 can be wrapped in the gauze layer 504 first, and then the gauze layer 504 can be placed in the inner cavity of the box body 5. Hydrogen can enter the inner cavity of the box body 5 through the through holes 7 and pass through the gauze layer 504 to react with the titanium alloy powder 505.

[0021] The cross-section of box 5 can be square, but manufacturing it is relatively difficult. Further details can be found in [link to documentation]. Figure 2 and Figure 3The box body 5 includes a cylindrical body 501 with openings at both ends. One of the openings is sealed by an end plate 502, and the other opening forms a feed inlet 503. The cylindrical body 501 is cylindrical and hollow, forming an inner cavity, which is the inner cavity of the box body 5. The end plate 502 seals one of the openings, and the connection between the end plate 502 and the cylindrical body 501 can be achieved by AB glue bonding or integral molding. The other opening forms the feed inlet 503. Thus, the box body 5 presents a cup-shaped structure, allowing titanium alloy powder 505 to be placed into the inner cavity.

[0022] To facilitate the removal of the prepared titanium alloy powder 505 from the inner cavity of the box 5, further, see... Figure 2 The outer surface of the cylinder 501 is provided with external threads, and the cover 6 is provided with an internal threaded hole that mates with the external threads. In this way, the cover 6 and the cylinder 501 are separate structures, which makes it more convenient to place and remove the titanium alloy powder 505. At the same time, the internal volume of the cylinder 501 does not change because the outer surface of the cylinder 501 is provided with external threads and the cover 6 is provided with an internal threaded hole that mates with the external threads.

[0023] To further improve the efficiency of hydrogen entering the inner cavity of housing 5, see [further details]. Figure 2 The end plate 502, the cylinder 501, and the cover 6 are all provided with through holes 7; multiple through holes 7 are provided on the cylinder 501 and are evenly arranged along the circumference of the cylinder 501. This arrangement can improve the efficiency and amount of hydrogen entering the inner cavity of the box 5, making the reaction of titanium alloy powder 505 in the inner cavity of the box 5 more uniform.

[0024] Because hydrogen has a lower mass than air, if reaction channel 3 is horizontal during use, the upper half of the channel may contain hydrogen, while the lower half may contain air. Further details can be found in the documentation. Figure 1 A base 8 is provided below the tubular furnace 2. A telescopic device 9 is provided at the lower end of the tubular furnace 2 near the gas supply pipe 4. One end of the telescopic device 9 is hinged to the base 8, and the other end is hinged to the bottom of the tubular furnace 2. The end of the tubular furnace 2 away from the gas supply pipe 4 is hinged to the base 8. The center line of rotation of the tubular furnace 2 is perpendicular to the center line of the reaction channel 3. The telescopic device 9 can be an electric push rod. During preparation, the telescopic device 9 is extended so that the hydrogen inlet of the reaction channel 3, i.e., the end of the reaction channel 3 connected to the gas supply pipe 4, is higher than the outlet of the reaction channel 3. Since the mass of hydrogen is less than that of air, hydrogen will slowly fill the entire reaction channel 3, and the air in the reaction channel 3 will flow out from the outlet. This makes the hydrogen in the reaction channel 3 purer, and the reaction efficiency of the titanium alloy powder 505 is higher.

[0025] To prevent housing 5 from sliding out of reaction channel 3, further see... Figure 1 The reaction channel 3 is provided with an installation groove 10 extending along the axis of the reaction channel 3. A limiting plate 11 is provided in the installation groove 10. The upper surface of the limiting plate 11 abuts against the box body 5. The end of the limiting plate 11 near the gas supply pipe 4 is hinged to the installation groove 10. A spring 12 is provided on the lower surface of the limiting plate 11. One end of the spring 12 is fixedly connected to the lower surface of the limiting plate 11, and the other end is fixedly connected to the bottom wall of the installation groove 10. The mounting slot 10 is a rectangular slot, and the limiting plate 11 is a rectangular plate. When the box 5 is placed in the reaction channel 3, the spring 12 pushes the limiting plate 11 out of the mounting slot 10, so that the upper surface of the limiting plate 11 abuts against the box 5, preventing the box 5 from sliding further down. It should be noted that one mounting slot 10 can be set in the reaction channel 3, and the limiting plate 11 is set in the mounting slot 10. When there are multiple boxes 5, the limiting plate 11 abuts against the bottommost box 5. Similarly, the reaction channel 3 can have the same number of mounting slots as the number of boxes 5. 10. A limiting plate 11 is provided in each mounting slot 10, so that each limiting plate 11 abuts against a box 5. The distance between two adjacent mounting slots 10 is greater than the length of the box 5. This can separate multiple boxes 5, so that the reaction of titanium alloy powder 505 in each box 5 is faster. After preparation, the box 5 is pushed with a plastic rod to apply pressure to the upper surface of the limiting plate 11, compressing the spring 12 and causing the limiting plate 11 to return to the mounting slot 10 until the box 5 is pushed out of the reaction channel 3. Then the limiting plate 11 returns to its initial state.

[0026] Furthermore, the titanium alloy powder 505 has a diameter greater than 38 micrometers, and the gauze layer 504 is made of 400-800 mesh gauze.

[0027] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for preparing hydrogen-absorbing titanium alloy powder, comprising a hydrogen generator (1) and a tubular furnace (2), wherein the tubular furnace (2) is provided with a reaction channel (3), and the output port of the hydrogen generator (1) is connected to the reaction channel (3) through a gas delivery pipe (4); characterized in that: At least one box body (5) is arranged in the reaction channel (3), the axis of the box body (5) is parallel to the axis of the reaction channel (3), the box body (5) has a feed port (503), the box body (5) is provided with a cover body (6) covering the feed port (503), the outer wall of the box body (5) and / or the cover body (6) is provided with a through hole (7) connected to the inner cavity of the box body (5), a gauze layer (504) is arranged in the box body (5), and titanium alloy powder (505) is arranged in the gauze layer (504).

2. The device for preparing hydrogen absorbing titanium alloy powder according to claim 1, characterized in that: The box body (5) comprises a cylindrical barrel (501), and both ends of the barrel (501) are open, one of the openings is sealed by an end plate (502), and the other opening forms a feed port (503).

3. The device for preparing hydrogen absorbing titanium alloy powder according to claim 2, characterized in that: The outer surface of the cylinder (501) is provided with an external thread, and the cover (6) is provided with an internal thread hole matching the external thread.

4. The device for preparing hydrogen absorbing titanium alloy powder according to claim 2, characterized in that: The end plate (502), the cylinder (501) and the cover (6) are all provided with through holes (7); a plurality of through holes (7) are provided on the cylinder (501), and are evenly arranged along the circumference of the cylinder (501).

5. The device for preparing hydrogen absorbing titanium alloy powder according to claim 1, characterized in that: A base (8) is provided below the tubular furnace (2); a telescopic device (9) is provided below the tubular furnace (2) at an end close to the gas pipe (4); one end of the telescopic device (9) is hinged to the base (8), and the other end is hinged to the bottom of the tubular furnace (2); the end of the tubular furnace (2) away from the gas pipe (4) is hinged to the base (8); and the center line of rotation of the tubular furnace (2) is perpendicular to the center line of the reaction channel (3).

6. The device for preparing hydrogen absorbing titanium alloy powder according to claim 5, characterized in that: The reaction channel (3) is provided with a mounting groove (10) extending along the axial direction of the reaction channel (3), and a limiting plate (11) is provided in the mounting groove (10). The upper surface of the limiting plate (11) abuts against the box body (5), and the end of the limiting plate (11) close to the gas transmission pipe (4) is hinged to the mounting groove (10). The lower surface of the limiting plate (11) is provided with a spring (12), and one end of the spring (12) is fixedly connected to the lower surface of the limiting plate (11), and the other end is fixedly connected to the bottom wall of the mounting groove (10).

7. The device for preparing hydrogen absorbing titanium alloy powder according to claim 1, characterized in that: The diameter of the titanium alloy powder (505) is greater than 38 micrometers, and the gauze layer (504) is made of gauze with a mesh size of 400 to 800.

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