Preparation method and system of high-toughness tungsten alloy prefabricated fragments

Abstract

The invention relates to the technical field of prefabricated fragment sintering, in particular to a preparation method and system of a high-toughness tungsten alloy prefabricated fragment. When a pipe is mounted on the mounting column, the pipes of different sizes can be mounted and sintered through a first lantern ring, a second lantern ring, a sliding plate, a mounting ring, a first hinge plate and a second hinge plate, and the sintering efficiency of the pipes is improved; the mounting columns are arranged on the mounting pipes, and gaps are formed between the mounting columns, so that when the mounting pipes are sintered, gaps are formed between the adjacent mounting pipes, and when the mounting pipes are sintered, the heating is more uniform, so that the sintering time is shortened, the sintering quality is improved, and the sintering efficiency is improved; the material of the mounting column is the same as that of the heat conduction wire, and when the pipe is mounted on the mounting column, a gap is formed between the pipe and the mounting column, so that in the sintering process, the mounting column radiates heat at the same time to heat the interior of the pipe, the interior and the exterior of the pipe are sintered at the same time, and the sintering efficiency is further improved; and the heating uniformity of the pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering prefabricated fragments, in particular to a preparation method and system of a high-toughness tungsten alloy prefabricated fragment. Background Art

[0002] Prefabricated fragments refer to prefabricated fragments with specific shapes and sizes, which are used to achieve killing or destructive effects under the action of explosions, etc. It is widely used in various ammunition and warheads, such as mines, grenades, aerial bombs, anti-aircraft missiles, anti-radiation missiles, etc. For example, the M18A1 directional mine contains a large number of prefabricated fragments, which can cause the fragments to fly to a specific fan-shaped area in front when it explodes. Prefabricated fragments include tile-shaped, cubic, spherical, short rod, cylindrical, etc. Spherical fragments have low flight resistance and can maintain good stability in the air; cylindrical fragments, especially tungsten columns, have high density and strong armor-piercing ability; The existing prefabricated fragments usually require the following processes during the manufacturing process: mixing - granulation - pressing - sintering - heat treatment - finished product; In the process of preparing the prefabricated fragments, especially in the sintering process, a vacuum sintering furnace is usually required. However, in the process of using the vacuum sintering furnace, especially in the sintering of the columnar prefabricated fragments, the prefabricated fragments are usually columnar pipes. After the columnar pipes are sintered and heat-treated, the heat-treated pipes are cut into uniform pipe sections, and then grooves are carved on the outer wall of the pipe section using a machine tool to form uniform diamond blocks on the surface. In the process of sintering the pipe, a bracket is usually used to place the pipe on the bracket, and the pipes are stacked one by one on the bracket. The bracket is then placed in the sintering chamber inside the sintering furnace, and the sintering furnace is started to sinter the pipe. After the sintering is completed, the bracket is then taken out and the pipe is taken out of the bracket. However, when the pipes are placed on the bracket for sintering, the pipes are stacked together, and there will be a problem of uneven heating between the inner pipe and the outermost pipe, resulting in quality defects in the steel pipe. If such quality defects are to be avoided, the sintering time needs to be extended to fully sinter, resulting in reduced sintering efficiency.

[0003] In summary, in order to solve the technical problem raised in this article, the present invention proposes a method and system for preparing high-toughness tungsten alloy prefabricated fragments. Summary of the invention

[0004] The present invention provides a preparation system for high-toughness tungsten alloy prefabricated fragments, the preparation system comprising a sintering furnace; the sintering furnace comprises a furnace body and a sintering cavity arranged in the furnace body, The sintering chamber includes a heating wire arranged on the inner wall and a cover plate arranged at the feed inlet, a cooling box arranged away from the feed inlet, a driving device arranged inside the cooling box, and a driving plate arranged at the sintering chamber away from the feed inlet, wherein the driving device is connected to the driving plate; an air inlet and an air outlet are arranged at the upper end of the sintering chamber; the cooling box is connected to both the upper and lower ends of the sintering chamber through a heat exchange pipe; A plurality of mounting posts are evenly arranged on the driving plate; a No. 1 collar and a No. 2 collar are arranged on each mounting post; Each No. 1 collar is provided with a mounting ring, and three sets of slide grooves are provided on the mounting ring. The distance between each set of slide grooves and the mounting column increases from the inside to the outside. A slide plate is slidably connected inside each slide groove, and a spring is provided between the slide plate and the No. 1 collar; there are two No. 2 collars on each mounting column, and a No. 1 hinge plate and a No. 2 hinge plate are provided between the two No. 2 collars, and there is an upward protrusion between the No. 1 hinge plate and the No. 2 hinge plate; A plurality of through holes are arranged on the cover plate, and a push tube corresponding to the position of each mounting column is arranged in the through hole, and the inner diameter of the push tube is the same as the inner diameter of the mounting column.

[0005] As a preferred solution of the present application; the mounting column close to the mounting ring extends to the interior of the driving plate, the driving plate is made of heat-insulating material, and one end of the mounting column is located inside the driving plate and is electrically connected, so that the mounting column and the heating wire are made of the same material, both tungsten.

[0006] As a preferred solution of the present application, through grooves are evenly arranged on the mounting ring, and the through grooves are located between adjacent sliding grooves.

[0007] As a preferred solution of the present application, a driving ring is provided at one end of the cover plate located outside the sintering chamber, and one end of the driving ring close to the cover plate is connected to each push tube.

[0008] As a preferred solution of the present application; a through groove is provided in the middle of the cover plate, and a rotating disk No. 1 is rotatably connected inside the through groove, and a through hole is provided on the rotating disk No. 1; a column-shaped groove is provided on the driving plate, and a rotating disk No. 2 is slidably connected inside the column-shaped groove, and the mounting column is slidably connected to the rotating disk No. 2, and a conductive disk is provided on the inner side of the rotating disk No. 2, and the mounting column is connected to the conductive disk on the inner side, and the conductive disk is slidably connected to the conductive column inside the column-shaped groove; a driving motor is provided on the furnace cover of the furnace body, and two driving columns are provided on the output shaft of the driving motor, and two adjusting columns are provided at the center position of the rotating disk No. 1, and the distance between the adjusting columns is greater than the size of the output shaft of the driving motor.

[0009] As a preferred solution of the present application, the No. 1 rotating disk, the No. 2 rotating disk, the driving disk and the cover plate are all made of ceramic fiber.

[0010] As a preferred solution of the present application, an n-shaped bracket is provided on the rotating shaft at the connection between the first hinge plate and the second hinge plate, and the two ends of the n-shaped bracket are connected to the two ends of the rotating shaft at both ends of the second hinge plate and the first hinge plate.

[0011] A method for preparing a high-toughness tungsten alloy prefabricated fragment, the method being applicable to the above-mentioned system for preparing the high-toughness tungsten alloy prefabricated fragment; S1: First, open the furnace cover on the sintering furnace body, then open the cover plate on the sintering chamber, then the staff controls the driving device to work, the driving device extends, so that the driving plate is pushed toward the feed port of the sintering chamber, and the driving plate drives the installation column to be pushed out of the sintering chamber; then the staff sets the pipe of the prefabricated fragments on the installation column; S2: After the pipe is installed on the mounting column, push the pipe on the mounting column toward the second sleeve ring until the end contacts the slide plate on the mounting ring; when the inner diameter of the pipe contacts the innermost slide plate, the end of the pipe pushes the two sets of slide plates on the outer side, and the outer side of the innermost slide plate supports the inner wall of the pipe; S3: After the tubes are placed, the driving device pulls the driving plate, so that the driving plate drives the mounting column and the tubes placed thereon into the sintering chamber. Then the staff closes the cover plate and pushes the push tube. The tube wall of the push tube pushes the No. 2 sleeve ring located outside, and the No. 1 hinged plate and the No. 2 hinged plate rotate at the hinge until the hinge point of the No. 1 hinged plate and the No. 2 hinged plate pushes the inner wall of the tube. S4: Then, the furnace cover on the tube furnace body is closed to start the sintering furnace; the air outlet is opened to extract the air inside the sintering chamber; then, the air outlet is closed, the air inlet is opened, and ammonia is injected into the sintering chamber through the air inlet. After the ammonia is injected, the air inlet is closed to start sintering; during sintering, the heat conducting wire inside the sintering chamber heats the inside to sinter the internal pipes; S5: After sintering is completed, the cooling box is opened, and the heat exchange tube extracts the high-temperature gas inside the sintering chamber, and the cooling box discharges the high-temperature gas out of the furnace body, and then the outside gas is drawn into the cooling box. After being drawn into the cooling box, the outside cooling gas is injected into the sintering chamber through the heat exchange tube below, and the pipe is cooled by a reciprocating cycle; after cooling, the sintered pipe is taken out.

[0012] The beneficial effects of the present invention are as follows: When installing the pipe on the mounting column, through the No. 1 ring, the No. 2 ring, the slide plate, the mounting ring, the No. 1 hinge plate and the No. 2 hinge plate, it is possible to install and sinter pipes of different sizes, thereby improving the sintering efficiency of the pipe; and there are gaps between the mounting columns, so that when the mounting pipes are sintered, there are gaps between adjacent mounting pipes, so that each mounting pipe is heated more evenly during sintering, thereby reducing the sintering time, improving the sintering quality, and improving the sintering efficiency; and the material of the mounting column is the same as that of the heat conducting wire, and when the pipe is installed on the mounting column, there is a gap between the pipe and the mounting column, so that during the sintering process, the mounting column simultaneously radiates heat to heat the inside of the pipe, so that the inside and outside of the pipe are sintered at the same time, further improving the sintering efficiency and the heating uniformity of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional diagram of a furnace body in the present invention; Figure 2 It is a view of the internal structure of the furnace body of the present invention; Figure 3 It is a structural view of the sintering chamber and the cooling box in the present invention; Figure 4 It is a structural view of the driving motor and the driving ring in the present invention; Figure 5 It is a structural view of the heating wire in the present invention; Figure 6 is a cross-sectional view of a sintering chamber and a cooling box in the present invention; Figure 7 It is a structural view of the driving column and the adjusting column in the present invention; Figure 8 It is a structural view of the driving plate in the present invention; Fig. 9 It is a structural view of the columnar groove and the second rotating disk in the present invention; Fig.10 It is a structural view of the slide plate and the mounting ring in the present invention; Fig.11 It is a structural view of the push tube and the mounting column in the present invention; Fig.12 It is a structural view of the first hinge plate, the second hinge plate and the n-shaped bracket in the present invention; Fig.13 It is a structural view of the No. 2 sleeve ring and the mounting ring in the present invention; Fig.14 is a flow chart of the method in the present invention; In the figure: furnace body 1, sintering chamber 11, heating wire 12, cover plate 13, cooling box 14, driving device 15, driving plate 111, air inlet 112, air outlet 113, heat exchange tube 141, mounting column 16, No. 1 collar 161, No. 2 collar 162, mounting ring 163, slide groove 164, slide plate 165, No. 1 hinge plate 166, No. 2 hinge plate 167, through hole 131, push tube 132, through groove 168, driving ring 133, through groove 134, No. 1 rotating disk 135, No. 2 rotating disk 115, conductive disk 117, driving motor 17, driving column 171, adjusting column 172, n-shaped bracket 169. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0015] Embodiment 1: like Figures 1 to 13 As shown; a preparation system for high-toughness tungsten alloy prefabricated fragments, the preparation system includes a sintering furnace; the sintering furnace includes a furnace body 1 and a sintering chamber 11 arranged in the furnace body 1, The sintering chamber 11 includes a heating wire 12 arranged on the inner wall and a cover plate 13 arranged at the feed port, a cooling box 14 arranged away from the feed port, and a driving device 15 arranged inside the cooling box 14, and a driving plate 111 arranged at the sintering chamber 11 away from the feed port, and the driving device 15 is connected to the driving plate 111; an air inlet 112 and an air outlet 113 are arranged at the upper end of the sintering chamber 11; the cooling box 14 is connected to both the upper and lower ends of the sintering chamber 11 through a heat exchange pipe 141; A plurality of mounting posts 16 are evenly arranged on the driving plate 111; a first collar 161 and a second collar 162 are arranged on each mounting post 16; Each No. 1 collar 161 is provided with a mounting ring 163, and three groups of slide grooves 164 are provided on the mounting ring 163. The distance between each group of slide grooves 164 and the mounting column 16 increases from the inside to the outside. A slide plate 165 is slidably connected inside each slide groove 164, and a spring is provided between the slide plate 165 and the No. 1 collar 161; there are two No. 2 collars 162 on each mounting column 16, and a No. 1 hinge plate 166 and a No. 2 hinge plate 167 are provided between the two No. 2 collars 162, and the ends of the No. 1 hinge plate 166 and the No. 2 hinge plate 167 that are close to each other are intersecting, and the hinge point protrudes upward; A plurality of through holes 131 are provided on the cover plate 13. A push tube 132 corresponding to the position of each mounting column 16 is provided in the through hole 131. The inner diameter of the push tube 132 is the same as the inner diameter of the mounting column 16. The mounting post 16 near the mounting ring 163 extends to the inside of the driving plate 111, and the driving plate 111 is made of heat-insulating material, and one end of the mounting post 16 located inside the driving plate 111 is electrically connected, so that the mounting post 16 and the heating wire 12 are made of the same material, tungsten; The specific workflow is as follows; When in use, first open the furnace cover on the furnace body 1 of the sintering furnace. When the furnace cover is opened, the sintering chamber 11 inside the furnace body 1 leaks out. Then open the cover plate 13 on the sintering chamber 11. After the cover plate 13 is opened, the heat-conducting wire inside the sintering chamber 11 leaks out. Then the staff controls the driving device 15 to work. The driving device 15 is a telescopic device in the prior art. The driving device 15 is located inside the cooling box 14. The telescopic end of the driving device 15 penetrates the inner wall of the cooling box 14 close to the sintering chamber 11, and the telescopic end of the driving device 15 simultaneously penetrates the inner wall between the sintering chamber 11 and the cooling box 14, so that the telescopic end of the driving device 15 is located inside the sintering chamber 11; so that the driving device 15 is connected to the driving plate 111 inside the sintering chamber 11; After the furnace cover on the furnace body 1 and the cover plate 13 of the sintering chamber 11 are opened, the driving device 15 extends to push the driving plate 111, so that the driving plate 111 is pushed toward the feed port of the sintering chamber 11, and the driving plate 111 drives the mounting column 16 to be pushed out of the sintering chamber 11. Then the staff puts the pipe of the prefabricated fragments on the mounting column 16. The size of the No. 1 collar 161 and the No. 2 collar 162 on the mounting column 16 is smaller than the smallest size of the pipe. When the pipe is installed on the mounting column 16 Afterwards, the pipe is pushed on the mounting column 16 toward the second collar 162 until the end thereof contacts the slide plate 165 on the second collar 162; when the inner diameter of the pipe contacts the innermost slide plate 165, the end of the pipe pushes the two sets of slide plates 165 on the outer side, and the slide plates 165 on the outer side slide inside the two sets of slide grooves 164 on the outer side toward the end close to the cooling box 14, and at this time, the outer side of the innermost slide plate 165 supports the inner wall of the pipe; Similarly, when the size of the pipe contacts the slide plate 165 located in the middle, the pipe pushes the slide plate 165 located on the outermost side, so that the slide plate 165 located on the inner side supports the inner wall of the pipe; if the size of the pipe and the outermost slide plate 165 is the same, the outer wall of the outermost slide plate 165 supports the inner side of the pipe; when the pipe is placed, the driving device 15 pulls the driving plate 111, so that the driving plate 111 drives the mounting column 16 and the pipe placed thereon into the sintering chamber 11, and then the staff closes the cover plate 13, and the push tube 132 arranged on the cover plate 13 corresponds to each mounting column 16, and the inner diameter of the push tube 132 is the same as the inner diameter of the mounting column 16, and the thickness of the push tube 132 is the same as the thickness of the No. 1 collar 161 and the No. 2 collar 162; when the cover plate 13 is closed, the staff pushes the push tube 132 to push it inward inside the through hole 131 The push tube 132 is a barrel-shaped structure, and one end of the push tube 132 located outside the cover plate 13 is not connected to the outside; when the push tube 132 moves inward in the through hole 131, the mounting column 16 enters the inner diameter of the push tube 132, and the tube wall of the push tube 132 pushes the second sleeve ring 162 located outside, so that the gap between the two second sleeve rings 162 becomes smaller. When the gap between the two second sleeve rings 162 becomes smaller, the first hinge plate 166 The first hinge plate 166 and the second hinge plate 167 rotate at the hinge, and the hinge of the first hinge plate 166 and the second hinge plate 167 moves upward until the hinge point of the first hinge plate 166 and the second hinge plate 167 pushes against the inner wall of the pipe. At this time, the push tube 132 cannot be pushed inside the through hole 131; so that the pushing distance of the push tube 132 inside the through hole 131 is determined by the diameter of the pipe; then the furnace cover on the tube furnace body 1 is opened, and the sintering furnace is started; After the sintering furnace is started, the air outlet 113 is opened first, and the air outlet 113 extracts the air inside the sintering chamber 11, so that a vacuum state is formed inside the sintering chamber 11; then the air outlet 113 is closed, and the air inlet 112 is opened, and ammonia is injected into the sintering chamber 11 through the air inlet 112, so that the ammonia is a protective gas; after the ammonia is injected, the air inlet 112 is closed and sintering begins; during sintering, the heat-conducting wire inside the sintering chamber 11 heats the inside and sinters the internal pipes, and during the sintering process, the sintering chamber 11 and the inner wall of the furnace body 1 of the sintering furnace are filled with a high-aluminum refractory brick insulation layer, so that during the sintering process of the sintering chamber 11, the inside is insulated; and the high-aluminum refractory brick insulation layer does not affect the air inlet 112, the air outlet 113 and the heat exchange tube 141; After sintering is completed, the cooling box 14 is opened. After the cooling box 14 is opened, the fan inside the cooling box 14 extracts the high-temperature gas inside the sintering chamber 11 through the heat exchange tube 141 located above the sintering chamber 11. When the high-temperature gas enters the cooling box 14, the cooling box 14 discharges the high-temperature gas out of the furnace body 1, and then draws the outside gas into the cooling box 14. After being drawn into the cooling box 14, the outside cooling gas is injected into the sintering chamber 11 through the heat exchange tube 141 below, and the pipe is cooled by a reciprocating cycle; after cooling; open the furnace cover on the furnace body 1, and then pull the push tube 132 to pull the push tube 132 out of the mounting column 16, and then open the cover plate 13; after opening, the driving plate 111 pushes the pipe, and then takes out the sintered pipe; In the above process, when the pipe is installed on the installation column 16, the first sleeve ring 161, the second sleeve ring 162, the slide plate 165, the installation ring 163, the first hinge plate 166 and the second hinge plate 167 can be used to install and sinter pipes of different sizes, thereby improving the sintering efficiency of the pipes. There are gaps between the mounting columns 16, so that when the mounting tubes are sintered, there are gaps between adjacent mounting tubes, so that each mounting tube is heated more evenly during sintering, thereby reducing the sintering time, improving the sintering quality, and improving the sintering efficiency; The material of the mounting column 16 is the same as that of the heat conducting wire. When the tube is installed on the mounting column 16, there is a gap between the tube and the mounting column 16. During the sintering process, the mounting column 16 simultaneously emits heat to heat the inside of the tube, so that the inside and outside of the tube are sintered at the same time, further improving the sintering efficiency and the uniformity of heating the tube.

[0016] Embodiment 2: like Figures 2 to 13 As shown; the mounting ring 163 is evenly provided with through grooves 168, and the through grooves 168 are located between adjacent slide grooves 164; The specific workflow is as follows; By evenly opening through grooves 168 on the mounting ring 163, and the through grooves 168 are located between adjacent slide grooves 164, when the pipe is installed on the mounting column 16, the interior of the pipe located between the No. 2 sleeve ring 162 and the No. 1 sleeve ring 161 is connected to the interior of the sintering chamber 11 through the through grooves 168 and the No. 1 sleeve ring 161, so that when the pipe is sintered, the heat emitted by the mounting column 16 can be exchanged with the interior of the sintering chamber 11; when the pipe is cooled, the high-temperature gas inside the pipe can be extracted, and the cooling gas can enter the interior of the pipe, thereby improving the cooling and heating effects.

[0017] Embodiment three: like Figures 1 to 13As shown; a driving ring 133 is provided at one end of the cover plate 13 located outside the sintering chamber 11, and an end of the driving ring 133 close to the cover plate 13 is connected to each push tube 132; A through slot 134 is provided in the middle of the cover plate 13, and a rotating disk 135 is rotatably connected inside the through slot 134, and a through hole 131 is provided on the rotating disk 135; a columnar slot 114 is provided on the driving plate 111, and a rotating disk 115 is slidably connected inside the columnar slot 114, and a mounting column 16 is slidably connected to the rotating disk 115, and a conductive disk 117 is provided on the inner side of the rotating disk 115, and the mounting column 16 is connected to the conductive disk 117 on the inner side, and the conductive disk 117 is slidably connected to the conductive column inside the columnar slot 114; a driving motor 17 is provided on the furnace cover of the furnace body 1, and two driving columns 171 are provided on the output shaft of the driving motor 17, and two adjusting columns 172 are provided at the center position of the rotating disk 135, and the distance between the adjusting columns 172 is greater than the size of the output shaft of the driving motor 17; The first rotating disk 135, the second rotating disk 115, the driving disk and the cover plate 13 are all made of ceramic fiber; The specific workflow is as follows; A driving rod ring is provided on the cover plate 13. One end of the driving ring 133 close to the cover plate 13 is connected to each push tube 132. When the pipe is installed on the mounting column 16, based on the above embodiment, when the push tube 132 is pushed to push the No. 2 sleeve 162, the hinge between the No. 1 hinge plate 166 and the No. 2 hinge plate 167 between the two No. 2 sleeves 162 moves upward. It is only necessary to directly push the driving ring 133. The driving ring 133 directly pushes each push tube 132 synchronously, so that there is no need to push multiple push tubes 132 one by one, thereby improving efficiency. During the sintering process, a driving motor 17 is arranged on the furnace cover of the furnace body 1. The driving motor 17 is located at the center of the furnace cover. When the furnace cover is closed, the output shaft of the driving motor 17 enters between the two adjusting columns 172. During the process, the adjusting column 172 does not block the driving column 171. The condition that the adjusting column 172 and the driving column 171 do not block each other is that when the output shaft of the driving motor 17 completely enters between the two adjusting columns 172, the driving column 171 and the adjusting column 172 are in a mutually perpendicular state. After the furnace cover is closed, sintering is carried out inside the sintering chamber 11. During the sintering process, the driving motor 17 rotates slowly. When it starts to rotate, the two driving columns 171 on the output shaft of the driving motor 17 gradually approach the two adjusting columns 172 until the driving columns 171 contact the adjusting columns 172, so that the driving motor 17 pushes the adjusting columns 172 through the driving columns 171. After the adjusting columns 172 are pushed, the adjusting columns 172 drive the No. 1 rotating disk 135 to rotate, the No. 1 rotating disk 135 drives the push tube 132 to rotate, and the push tube 132 drives the driving ring 133 to rotate. At the same time, since the mounting column 16 is embedded in the push tube 132, the push tube 132 drives the mounting column 16 to rotate, the mounting column 16 drives the No. 2 rotating disk 115 to rotate, and the No. 2 rotating disk 115 drives the conductive disk 117 to rotate. When the conductive disk 117 rotates, it contacts the conductive column inside the column groove 114, so that the conductive column can continuously supply power to the mounting column 16 through the conductive disk 117. In the above process, the tube can be slowly rotated in the sintering chamber 11 during the sintering process, so that the tube is heated more evenly during the sintering process, avoiding uneven oxidation and heat conduction of the local heat-conducting wire, which leads to uneven heating of the tube in the corresponding area, thereby improving the firing efficiency; and by making the No. 1 rotating disk 135, the No. 2 rotating disk 115, the drive disk and the cover plate 13 all made of ceramic fiber materials, during the sintering process, the No. 1 rotating disk, the No. 2 rotating disk 115, the drive disk and the cover plate 13 can better insulate the inside of the sintering chamber 11, avoiding the temperature inside the sintering chamber 11 from flowing out, which would cause the problem of heat waste.

[0018] Embodiment 4: like Figures 3 to 13 As shown; an n-shaped bracket 169 is provided on the rotation axis of the connection between the first hinge plate 166 and the second hinge plate 167, and the two ends of the n-shaped bracket 169 are connected to the two ends of the rotation axis of the second hinge plate 167 and the first hinge plate 166; the upper end of the n-shaped bracket 169 is arranged in an arc shape; The specific workflow is as follows; By arranging an n-shaped bracket 169 on the rotating shaft at the connection between the No. 1 hinge plate 166 and the No. 2 hinge plate 167, and connecting the two ends of the n-shaped bracket 169 to the rotating shaft between the No. 2 hinge plate 167 and the No. 1 hinge plate 166, when the No. 1 hinge plate 166 and the No. 2 hinge plate 167 move upward, the arc-shaped end on the n-shaped bracket 169 contacts the inner wall of the pipe, so that the arc-shaped surface on the n-shaped bracket contacts the inner diameter of the pipe more closely, thereby improving the stability of the pipe.

[0019] Embodiment five: like Fig.14As shown; a method for preparing a high-toughness tungsten alloy prefabricated fragment, the preparation method is applicable to the preparation system of the high-toughness tungsten alloy prefabricated fragment mentioned above; S1: First, the furnace cover on the sintering furnace body 1 is opened, and then the cover plate 13 on the sintering chamber 11 is opened. Then, the staff controls the driving device 15 to work, and the driving device extends, so that the driving plate 111 is pushed toward the feed port of the sintering chamber 11, and the driving plate 111 drives the mounting column 16 to be pushed out of the sintering chamber 11; then, the staff sets the pipe of the prefabricated fragments on the mounting column 16; S2: After the pipe is installed on the mounting column 16, the pipe is pushed on the mounting column 16 toward the second sleeve ring 162 until the end contacts the slide plate 165 on the mounting ring 163; when the inner diameter of the pipe contacts the innermost slide plate 165, the end of the pipe pushes the two sets of slide plates 165 on the outer side, and the outer side of the innermost slide plate 165 supports the inner wall of the pipe; S3: After the tubes are placed, the driving device 15 pulls the driving plate 111, so that the driving plate 111 drives the mounting column 16 and the tubes placed thereon to enter the sintering chamber 11, and then the staff closes the cover plate 13, and the staff pushes the push tube 132, and the tube wall of the push tube 132 pushes the No. 2 sleeve ring 162 located on the outside, and the No. 1 hinge plate 166 and the No. 2 hinge plate 167 rotate at the hinge until the hinge point of the No. 1 hinge plate 166 and the No. 2 hinge plate 167 pushes the inner wall of the tube; S4: Then, the furnace cover on the tube furnace body 1 is closed to start the sintering furnace; the air outlet 113 is opened, and the air outlet 113 extracts the air inside the sintering chamber 11; then, the air outlet 113 is closed, and the air inlet 112 is opened, and ammonia is injected into the sintering chamber 11 through the air inlet 112. After the ammonia is injected, the air inlet 112 is closed to start sintering; during sintering, the heat conducting wire inside the sintering chamber 11 heats the inside to sinter the internal pipe material; S4: After sintering is completed, the cooling box 14 is opened, and the heat exchange tube 141 extracts the high-temperature gas inside the sintering chamber 11, and the cooling box 14 discharges the high-temperature gas out of the furnace body 1, and then the outside gas is drawn into the cooling box 14. After being drawn into the cooling box 14, the outside cooling gas is injected into the sintering chamber 11 through the heat exchange tube 141 below, and the pipe is cooled by a reciprocating cycle; after cooling, the sintered pipe is taken out.

Claims

1. A preparation system for high-toughness tungsten alloy prefabricated fragments, the preparation system comprising a sintering furnace; the sintering furnace comprises a furnace body and a sintering chamber arranged in the furnace body, characterized in that: The sintering chamber includes a heating wire arranged on the inner wall and a cover plate arranged at the feed inlet, a cooling box arranged away from the feed inlet, a driving device arranged inside the cooling box, and a driving plate arranged at the sintering chamber away from the feed inlet, wherein the driving device is connected to the driving plate; an air inlet and an air outlet are arranged at the upper end of the sintering chamber; the cooling box is connected to both the upper and lower ends of the sintering chamber through a heat exchange pipe; A plurality of mounting posts are evenly arranged on the driving plate; a No. 1 collar and a No. 2 collar are arranged on each mounting post; Each No. 1 collar is provided with a mounting ring, and three sets of slide grooves are provided on the mounting ring. The distance between each set of slide grooves and the mounting column increases from the inside to the outside. A slide plate is slidably connected inside each slide groove, and a spring is provided between the slide plate and the No. 1 collar; there are two No. 2 collars on each mounting column, and a No. 1 hinge plate and a No. 2 hinge plate are provided between the two No. 2 collars, and there is an upward protrusion between the No. 1 hinge plate and the No. 2 hinge plate; A plurality of through holes are arranged on the cover plate, and a push tube corresponding to the position of each mounting column is arranged in the through hole, and the inner diameter of the push tube is the same as the inner diameter of the mounting column.

2. The system for preparing high-toughness tungsten alloy prefabricated fragments according to claim 1, characterized in that: The mounting post near the mounting ring extends to the inside of the driving plate, the driving plate is made of heat-insulating material, and one end of the mounting post located inside the driving plate is electrically connected, so that the mounting post and the heating wire are made of the same material, tungsten.

3. The system for preparing high-toughness tungsten alloy prefabricated fragments as claimed in claim 2, characterized in that: The mounting ring is evenly provided with through grooves, and the through grooves are located between adjacent sliding grooves.

4. The system for preparing high-toughness tungsten alloy prefabricated fragments according to claim 1, characterized in that: A driving ring is arranged at one end of the cover plate located outside the sintering chamber, and one end of the driving ring close to the cover plate is communicated with each push tube.

5. The system for preparing high-toughness tungsten alloy prefabricated fragments as claimed in claim 4, characterized in that: A through groove is provided in the middle of the cover plate, and a rotating disk No. 1 is rotatably connected inside the through groove, and a through hole is provided on the rotating disk No. 1; a column-shaped groove is provided on the driving plate, and a rotating disk No. 2 is slidably connected inside the column-shaped groove, and the mounting column is slidably connected to the rotating disk No. 2, and a conductive disk is provided on the inner side of the rotating disk No. 2, and the mounting column is connected to the conductive disk on the inner side, and the conductive disk is slidably connected to the conductive column inside the column-shaped groove; a driving motor is provided on the furnace cover of the furnace body, and two driving columns are provided on the output shaft of the driving motor, and two adjusting columns are provided at the center position of the rotating disk No. 1, and the distance between the adjusting columns is greater than the size of the output shaft of the driving motor.

6. The system for preparing high-toughness tungsten alloy prefabricated fragments according to claim 5, characterized in that: The No. 1 rotating disk, the No. 2 rotating disk, the driving disk and the cover plate are all made of ceramic fiber.

7. The system for preparing high-toughness tungsten alloy prefabricated fragments according to claim 1, characterized in that: An n-shaped bracket is arranged on the rotating shaft at the connection of the first hinge plate and the second hinge plate, and two ends of the n-shaped bracket are connected to two ends of the rotating shaft at two ends of the second hinge plate and the first hinge plate.

8. A method for preparing a high-toughness tungsten alloy prefabricated fragment, the method being applicable to the system for preparing a high-toughness tungsten alloy prefabricated fragment as claimed in any one of claims 1 to 7; characterized in that: S1: First, open the furnace cover on the sintering furnace body, then open the cover plate on the sintering chamber, then the staff controls the driving device to work, the driving device extends, so that the driving plate is pushed toward the feed port of the sintering chamber, and the driving plate drives the installation column to be pushed out of the sintering chamber; then the staff sets the pipe of the prefabricated fragments on the installation column; S2: After the pipe is installed on the mounting column, push the pipe on the mounting column toward the second sleeve ring until the end contacts the slide plate on the mounting ring; when the inner diameter of the pipe contacts the innermost slide plate, the end of the pipe pushes the two sets of slide plates on the outer side, and the outer side of the innermost slide plate supports the inner wall of the pipe; S3: After the tubes are placed, the driving device pulls the driving plate, so that the driving plate drives the mounting column and the tubes placed thereon into the sintering chamber. Then the staff closes the cover plate and pushes the push tube. The tube wall of the push tube pushes the No. 2 sleeve ring located outside, and the No. 1 hinged plate and the No. 2 hinged plate rotate at the hinge until the hinge point of the No. 1 hinged plate and the No. 2 hinged plate pushes the inner wall of the tube. S4: Then, the furnace cover on the tube furnace body is closed to start the sintering furnace; the air outlet is opened to extract the air inside the sintering chamber; then, the air outlet is closed, the air inlet is opened, and ammonia is injected into the sintering chamber through the air inlet. After the ammonia is injected, the air inlet is closed to start sintering; during sintering, the heat conducting wire inside the sintering chamber heats the inside to sinter the internal pipes; S5: After sintering is completed, the cooling box is opened, and the heat exchange tube extracts the high-temperature gas inside the sintering chamber, and the cooling box discharges the high-temperature gas out of the furnace body, and then the outside gas is drawn into the cooling box. After being drawn into the cooling box, the outside cooling gas is injected into the sintering chamber through the heat exchange tube below, and the pipe is cooled by a reciprocating cycle; after cooling, the sintered pipe is taken out.

Images