Equipment for preparing square tube from round tube based on metal high-temperature plastic deformation regulation and control mechanism

Abstract

The invention relates to the technical field of metal pipe machining, and discloses equipment for preparing a square pipe from a round pipe based on a metal high-temperature plastic deformation regulation mechanism, the equipment comprises a rack, and a thermal deformation mechanism and a quenching correction mechanism which are arranged on the rack, the thermal deformation mechanism is used for carrying out high-temperature plastic deformation on the round pipe, and the quenching correction mechanism is used for carrying out quenching correction on the round pipe; the quenching correction mechanism is used for quenching the deformed square tube; the preheating outer mold and the shaping outer mold are both arranged on the rack, the preheating rod set is arranged in the preheating outer mold, and an inner cavity of the preheating outer mold is cylindrical; the quenching outer mold and the correcting outer mold are both arranged on the rack, the quenching liquid pipe and the collecting pipe are both arranged on the quenching outer mold, a quenching cavity is formed in a wall plate of the quenching outer mold, the quenching liquid pipe is communicated with the quenching cavity, the quenching cavity is communicated with an inner cavity of the quenching outer mold, and the collecting pipe is communicated with the inner cavity of the quenching outer mold. The service life of the square pipe can be prolonged, the production efficiency of the square pipe can be improved, and the problem that the welding precision is low when the square pipe is bent and welded is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal pipe processing, and in particular to a device for preparing square pipes from round pipes based on a metal high-temperature plastic deformation control mechanism. Background Art

[0002] Rare metal profiles, especially materials with high strength but limited oxidation resistance such as titanium and zirconium, have been widely used in many high-end fields such as aerospace and nuclear engineering. At present, the forming process and corresponding forming equipment of materials such as steel and aluminum with good plasticity at room temperature are relatively mature. However, for rare metal square tubes with poor plasticity at room temperature, their forming technology and equipment are still in the stage of continuous development.

[0003] The traditional square tube forming process usually feeds the round tube into a series of rollers at room temperature and shapes it into a square tube shape by rolling, such as the rectangular steel tube rolling mill described in Chinese patent CN104384188. This equipment is particularly suitable for metal materials with good plasticity at room temperature. However, for rare metal materials with poor plasticity at room temperature, conventional roll forming technology seems to be unable to cope with it.

[0004] Another common square tube forming method is to first bend the sheet into two U-shaped grooves, then weld twice, and finally shape the square tube by heat treatment. For example, the zirconium alloy element box preparation process mentioned in Chinese patent CN201611145910.4 involves multiple steps such as two bends, two welds, and thermal correction.

[0005] Although bending welding technology can be used to form metal square tubes with poor room temperature plasticity, the square tubes made by this method have two welds, and the precision of the welds is often not high, and usually further processing is required to meet the precision requirements. The square tubes obtained by this processing method not only have low production efficiency, but also shorten the service life of the square tubes. Summary of the invention

[0006] The present invention provides a device for preparing square tubes from round tubes based on the metal high-temperature plastic deformation control mechanism, which solves the problem of low weld accuracy in square tube bending and welding. The device can be used for forming square tubes made of metal materials with poor room temperature plasticity, thereby improving the service life and accuracy of the square tubes and improving the production efficiency of the square tubes.

[0007] The present invention adopts the following technical solutions to achieve the invention objectives: A device for preparing square tubes from round tubes based on the high-temperature plastic deformation control mechanism of metals, comprising a frame and a thermal deformation mechanism and a quenching correction mechanism both arranged on the frame, wherein the thermal deformation mechanism is used to perform high-temperature plastic deformation on the round tubes, and the quenching correction mechanism is used to perform quenching treatment on the deformed square tubes; The thermal deformation mechanism comprises a preheating component, a shaping component, an inner mold and a fixing member, the preheating component comprises a preheating outer mold and a preheating rod group, and the shaping component comprises a shaping outer mold and a heating rod group; The preheating outer mold and the shaping outer mold are both arranged on the frame, the preheating rod group is arranged inside the preheating outer mold, the heating rod group is arranged inside the shaping outer mold, the inner cavity of the preheating outer mold is cylindrical, the inner cavity of the shaping outer mold close to one end of the preheating outer mold is cylindrical, and the inner cavity of the shaping outer mold away from one end of the preheating outer mold is square columnar, the fixing part is arranged on the frame, one end of the inner mold is arranged on the fixing part, and the other end passes through the preheating outer mold and is arranged inside the shaping outer mold, and the inner mold is adapted to the inner cavity of the preheating outer mold and the inner cavity structure of the shaping outer mold; The quenching and correction mechanism comprises a quenching outer mold, a correction outer mold, a quenching liquid pipe and a collecting pipe; The quenching outer mold and the correction outer mold are both arranged on the frame, the quenching liquid pipe and the collecting pipe are both arranged on the quenching outer mold, the inner cavity of the quenching outer mold and the inner cavity of the correction outer mold are both square pillars, a quenching cavity is opened inside the quenching outer mold wall panel, the quenching liquid pipe is connected with the quenching cavity, the quenching cavity is connected with the inner cavity of the quenching outer mold, and the collecting pipe is connected with the inner cavity of the quenching outer mold.

[0008] As a further limitation of the present technical solution, the quenching correction mechanism further includes a plurality of abutment plates, and the abutment plates are arranged in the inner cavity of the quenching outer mold.

[0009] As a further limitation of the technical solution, the quenching correction mechanism further includes a correction component, and the correction component includes a quenching drum and a connecting pipe. The connecting pipe is arranged inside the quenching outer die, and the quenching drum is arranged at the outlet end of the connecting pipe.

[0010] As a further limitation of the technical solution, the correction assembly further includes a conical disk and a guide ring; The conical disk is arranged in the quenching cavity, the connecting pipe is fixedly arranged on the conical disk, the connecting pipe is a hollow structure, a through hole is opened on the quenching drum, the quenching cavity is connected with the inner cavity of the quenching outer mold through the connecting pipe and the quenching drum, the quenching drum is rotatably connected to the roller bracket at the bottom of the connecting pipe, the roller bracket is fixedly connected to the connecting pipe, the interior of the roller bracket is connected with the interior of the connecting pipe, and the guide ring is fixedly arranged on the quenching outer mold at a position corresponding to the quenching cavity.

[0011] As a further limitation of the present technical solution, the quenching chamber is a conical structure, the conical disk is made of elastic material, and the connecting pipe is slidably arranged at the center of the guide ring.

[0012] As a further limitation of the technical solution, a plurality of quenching holes are provided inside the quenching outer mold, and the quenching cavity is connected with the inner cavity of the quenching outer mold through the plurality of quenching holes. In a natural state, the side wall of the conical disk blocks the opening of the quenching hole.

[0013] As a further limitation of the present technical solution, the quenching correction mechanism also includes a thermal insulation plate, which is arranged on the quenching outer mold and located between the quenching outer mold and the shaping outer mold. The collecting pipe is arranged on the thermal insulation plate, and the inner cavity of the thermal insulation plate is a square column.

[0014] As a further limitation of the present technical solution, the quenching correction mechanism also includes a guide die, which is arranged at one end of the frame close to the correction outer die, and the inner cavity of the guide die is a square column.

[0015] As a further limitation of the present technical solution, the thermal deformation mechanism also includes an inner mold insulation rod group, and the inner mold insulation rod group is arranged inside the inner mold.

[0016] As a further limitation of the technical solution, it also includes an atmosphere protection cover, which is detachably connected to the frame.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are: 1. Through the setting of the thermal deformation mechanism, the preheating rod group preheats the round tube, and one end of the preheated round tube is moved to the inner cavity of the outer molding die. The heating rod group provides a higher temperature to heat the round tube, so that the round tube undergoes high-temperature plastic deformation when passing through the middle of the inner mold, and the front end of the round tube gradually deforms into a square tube. With this setting, the square tube obtained by this technology no longer needs to be bent and welded multiple times, and no further processing of the weld is required to meet the production accuracy requirements of the square tube. The round tube can be directly manufactured into a square tube without a weld at one time, which improves the service life of the square tube and the production efficiency of the square tube. It has high practicality for manufacturing rare metal square tubes with high strength and poor room temperature plasticity, and the service life of the square tube is also improved.

[0018] 2. Through the setting of the quenching correction mechanism, the quenching liquid pipe outputs quenching liquid into the quenching cavity, and the quenching liquid flows into the inner cavity of the quenching outer mold through multiple quenching holes, so that the distribution of the quenching liquid is more uniform, and the quenching liquid quenches the end deformed into a square tube. Then, the quenching liquid is collected through the collecting pipe under the insulation plate and discharged. While the abutment plate positions and supports one end of the other tube, it can further promote the uniform distribution of the quenching liquid, so that the quenching liquid fully flows through various surfaces of the square tube, thereby improving the production quality and service life of the square tube after deformation, and reducing the probability of defects. After quenching and finalizing, one end of the square tube continues to move to the guide mold, and the guide mold guides and supports the other tube, so that the subsequent round tube is not easy to deviate during the movement.

[0019] 3. Through the setting of the correction component, during the slow movement of the square tube, the quenching drum and one end face of the square tube rotate relative to each other, and at the same time provide a certain support and positioning effect for the square tube, so that the square tube is not easy to be greatly deformed in the process of contacting with the quenching liquid, and is not easy to be greatly worn with the abutment plate during the movement, thereby reducing the probability of cracks and improving the processing quality of the square tube; when the amount of quenching liquid input by the quenching liquid pipe increases, the conical disk undergoes further elastic deformation, and the upper end of the conical disk moves downward along the quenching cavity of the conical structure. The conical disk cancels the covering of the quenching hole, so that more quenching liquid enters the inner cavity of the quenching outer mold through the quenching hole, and the quenching drum is not easy to cause damage to one end face of the square tube due to excessive pressure, thereby reducing the probability of defects. At the same time, the flow rate of the quenching liquid in the inner cavity of the quenching outer mold increases, which accelerates the quenching speed of the square tube and improves production efficiency.

[0020] 4. Since conventional plastic deformation molds usually only heat the outer surface of the round tube, but do not heat or keep the inside of the round tube warm, it is easy to cause uneven heating of the round tube and the heating time of the whole round tube is too long. By setting the inner mold insulation rod group, the inner mold insulation rod group heats and keeps the inside of the round tube warm, which can improve the uniformity of heating of the round tube, reduce the probability of defects, and thus improve production accuracy and efficiency.

[0021] 5. Through the setting of the mold fixing assembly, the fastening frame is installed on the preheating outer mold, the shaping outer mold, the quenching outer mold and the correction outer mold, and the first fixed baffle bar, the second fixed baffle bar and the third fixed baffle bar are installed to further fix it, thereby reducing the probability of the device shifting during the feeding process and improving the accuracy and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial structural schematic diagram of the present invention; Figure 3 for Figure 1 The cross-section along the AA direction; Figure 4 for Figure 3 A magnified view of part B; Figure 5 It is a partial structural schematic diagram of the correction component; Figure 6 A schematic diagram of a portion of the structure of the correction component from another perspective; Figure 7 It is a schematic diagram of the structure of the conical disk, the quenching drum and the connecting pipe; Figure 8 A partial structural diagram of the correction assembly and the abutment plate.

[0023] In the figure: 1, frame; 2, thermal deformation mechanism; 21, preheating assembly; 211, preheating outer mold; 212, preheating rod group; 22, shaping assembly; 221, shaping outer mold; 222, heating rod group; 23, inner mold; 24, fixing member; 25, inner mold insulation rod group; 26, mold fixing assembly; 261, first fixing bar; 262, second fixing bar; 263, fastening frame; 264, third fixing bar 3. Quenching correction mechanism; 31. Quenching outer mold; 311. Quenching cavity; 312. Quenching hole; 32. Correction outer mold; 33. Quenching liquid pipe; 34. Collecting pipe; 35. Insulation plate; 36. Abutment plate; 37. Guide mold; 38. Correction assembly; 381. Quenching drum; 382. Connecting pipe; 3821. Roller bracket; 383. Conical disk; 384. Guide ring; 4. Atmosphere protection cover. DETAILED DESCRIPTION

[0024] The following will be combined with the present invention Figure 1-Figure 8 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0026] When a component is referred to as being “located” or “disposed on” another component, it may be on the other component or there may be an intervening component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component or there may be an intervening component.

[0027] A device for preparing square tubes from round tubes based on the high-temperature plastic deformation control mechanism of metals comprises a frame 1 and a thermal deformation mechanism 2, a quenching correction mechanism 3 and an atmosphere protection cover 4 all arranged on the frame 1. The thermal deformation mechanism 2 is used for performing high-temperature plastic deformation on the round tubes, the quenching correction mechanism 3 is used for quenching the deformed square tubes, and the atmosphere protection cover 4 is detachably connected to the frame 1.

[0028] The thermal deformation mechanism 2 includes a preheating component 21, a shaping component 22, an inner mold 23, a fixing part 24, an inner mold insulation rod group 25 and a mold fixing component 26. The preheating component 21 includes a preheating outer mold 211 and a preheating rod group 212. The shaping component 22 includes a shaping outer mold 221 and a heating rod group 222. The preheating outer mold 211 and the shaping outer mold 221 are both fixedly connected to the frame 1 by bolts. The preheating rod group 212 is fixedly connected to the inside of the preheating outer mold 211. The heating rod group 222 is fixedly connected to the inside of the shaping outer mold 221. The cavity is cylindrical, the inner cavity of the shaping outer mold 221 close to one end of the preheating outer mold 211 is cylindrical, and the inner cavity of the shaping outer mold 221 away from the preheating outer mold 211 is square columnar, the fixing part 24 is fixedly connected to the frame 1 by bolts, one end of the inner mold 23 is fixedly connected to the fixing part 24, and the other end passes through the preheating outer mold 211 and is located inside the shaping outer mold 221, the end of the inner mold 23 close to the preheating outer mold 211 is cylindrical, and the end of the inner mold 23 away from the preheating outer mold 211 is square columnar, and the inner mold insulation rod group 25 is fixedly connected to the inside of the inner mold 23.

[0029] The mold fixing assembly 26 includes a first fixed baffle 261, a second fixed baffle 262, a fastening frame 263 and a third fixed baffle 264, all of which are fixedly connected to the frame 1 by bolts. The first fixed baffle 261 abuts against the preheating outer mold 211, the second fixed baffle 262 abuts against the preheating outer mold 211 and the shaping outer mold 221, and the third fixed baffle 264 abuts against the quenching correction mechanism 3. A plurality of fastening frames 263 are provided and fixedly connected to the frame 1 by bolts. The plurality of fastening frames 263 are respectively mounted on the preheating outer mold 211, the shaping outer mold 221 and the quenching correction mechanism 3.

[0030] The quenching correction mechanism 3 includes a quenching outer mold 31, a correction outer mold 32, a quenching liquid pipe 33, a collecting pipe 34, an abutment plate 36, a correction assembly 38, a temperature insulation plate 35 and a guide mold 37. The quenching outer mold 31 and the correction outer mold 32 are fixedly connected to the frame 1 by bolts. The quenching outer mold 31 and the correction outer mold 32 are integrally processed and formed. Four quenching liquid pipes 33 are provided, and the four quenching liquid pipes 33 are fixedly connected to the quenching outer mold 31. The inner cavity of the quenching outer mold 31 and the inner cavity of the correction outer mold 32 are both square columns. A plurality of abutment plates 36 are provided, and the plurality of abutment plates 36 are fixedly connected to the inner cavity of the quenching outer mold 31. The correction assembly 38 includes a quenching drum 381, a connecting pipe 382, ​​a conical disk 383 and a guide ring 384. A quenching chamber 311 is provided inside the wall plate of the quenching outer mold 31. The quenching liquid pipe 33 is connected to the quenching chamber 311. The quenching chamber 311 is a conical structure. The conical disk 383 is made of elastic material. The conical disk 383 is arranged in the quenching chamber 311. The guide ring 384 is fixedly arranged on the quenching outer mold 31. The connecting pipe 382 is slidably connected to the center of the guide ring 384. The inlet end of the connecting pipe 382 passes through the center of the conical disk 383 and then extends to the conical disk. At the large mouth end of 383, the connecting pipe 382 and the conical disk 383 are fixedly connected. The connecting pipe 382 is a hollow structure. The quenching drum 381 is arranged at the outlet end of the connecting pipe 382. A through hole is opened on the quenching drum 381. The quenching chamber 311 is connected with the inner cavity of the quenching outer mold 31 through the connecting pipe 382 and the quenching drum 381. A plurality of quenching holes 312 are opened on the quenching outer mold 31. The quenching chamber 311 is also connected with the inner cavity of the quenching outer mold 31 through the plurality of quenching holes 312. In the natural state, the side wall of the conical disk 383 blocks the orifice of the quenching hole 312. The central axis of the quenching drum 381 is rotatably connected to the roller bracket 3821 at the bottom of the connecting tube 382. The roller bracket 3821 is a barrel-shaped structure. The bottom of the roller bracket 3821 has a notch and one side is closed. The central axis of the quenching drum 381 is rotatably connected to the closed side of the roller bracket 3821 and the bottom partially leaks out of the roller bracket 3821. The roller bracket 3821 is fixedly connected to the connecting tube 382. The interior of the roller bracket 3821 is connected to the interior of the connecting tube 382. The guide ring 384 is fixedly arranged on the quenching outer mold 31 at a position corresponding to the quenching cavity 311. The insulation plate 35 is fixedly connected to the quenching outer mold 31. The insulation plate 35 is located between the quenching outer mold 31 and the shaping outer mold 221 and abuts against the quenching outer mold 31 and the shaping outer mold 221. The inner cavity of the insulation plate 35 is a square column. The collecting pipe 34 is fixedly connected to the insulation plate 35. The collecting pipe 34 is connected to the inner cavity of the quenching outer mold 31. The guide mold 37 is fixedly connected to one end of the frame 1 close to the correction outer mold 32 by bolts. The inner cavity of the guide mold 37 is a square column. The guide mold 37 is coaxially arranged with the correction outer mold 32. The third fixed baffle 264 abuts against the correction outer mold 32. A plurality of fastening frames 263 are respectively mounted on the preheating outer mold 211, the shaping outer mold 221, the quenching outer mold 31, and the correction outer mold 32.

[0031] In some embodiments, the inner wall of the guide mold 37 is a smooth and flat plane, the inner cavity of the guide mold 37 and the inner cavity of the correction outer mold 32 correspond to each other and have the same size, ensuring that the square tube can move accurately along the guide mold 37 when moving out, and a guide rod can also be provided between the guide mold 37 and the correction outer mold 32, and the two ends of the guide rod are respectively fixedly connected to the guide mold 37 and the correction outer mold 32, and the guide rod corresponds to one side of the center line of the guide mold 37 to form a plane with the inner walls of the guide mold 37 and the correction outer mold 32, and the pipe fitting can move along the guide rod until it enters the guide mold. Specifically, the guide rod plays a guiding role to ensure that the pipe fitting can slide horizontally.

[0032] The working principle of this embodiment is: When in use, the fastening frame 263 is installed on the preheating outer mold 211, the shaping outer mold 221, the quenching outer mold 31 and the correction outer mold 32, and the first fixed baffle 261, the second fixed baffle 262 and the third fixed baffle 264 are installed to further fix them, so as to reduce the probability of the device being offset during the feeding process and improve the accuracy and reliability of the device. The round tube is installed at one cylindrical end of the inner mold 23, one end of the inner mold 23 is installed on the fixing member 24, and the other end passes through the preheating outer mold 211 and is located inside the shaping outer mold 221. The atmosphere protection cover 4 is installed on the frame 1, and an inert atmosphere is provided inside to prevent the heated parts from Oxidation is prone to occur. The preheating rod group 212 preheats the round tube, and the round tube is pushed by the hydraulic cylinder to move one end of the preheated round tube into the inner cavity of the shaping outer mold 221. The heating rod group 222 provides a higher temperature to heat the round tube, so that the round tube undergoes high-temperature plastic deformation when passing through the middle of the inner mold 23, and the front end of the round tube gradually deforms into a square tube. With such an arrangement, the square tube obtained by this technology no longer needs to be bent and welded multiple times, and no further processing of the weld is required, which can meet the precision requirements of the square tube and can be applied to the forming of square tubes of metal materials with poor room temperature plasticity, thereby increasing the service life of the square tube and improving the production efficiency of the square tube.

[0033] The round tube is further moved forward, so that the end deformed into the square tube is moved to the inside of the quenching outer mold 31, and the quenching liquid pipe 33 is connected to the quenching liquid source to output the quenching liquid into the quenching chamber 311. The quenching liquid enters the conical disk 383 along the conical quenching chamber 311. Since the input quenching liquid usually has a certain pressure, the conical disk 383 will move downward under the action of the pressure and undergo a certain degree of elastic deformation, so that the conical disk 383 drives the quenching drum 381 to descend a certain distance, so that the quenching drum 381 is pressed against the square tube. On the side wall, the quenching liquid enters the interior of the connecting pipe 382, ​​then enters the quenching drum 381, and flows into the inner cavity of the quenching outer mold 31 through the through hole on the quenching drum 381. The quenching liquid quenches and cools the surface of the square tube. Due to the setting of the abutment plate 36, the abutment plate 36 can further promote the uniform distribution of the quenching liquid while positioning and supporting one end of the square tube, so that the quenching liquid fully flows through all surfaces of the square tube, thereby improving the production quality and service life of the square tube and reducing the probability of defects. When one end of the square tube is output from the inner cavity of the quenching outer die 31, the square tube is pulled outward to be slowly moved out. During the slow movement of the square tube, the quenching drum 381 rotates relative to the square tube, and at the same time provides a certain support and positioning effect for the square tube, so that the square tube is not easy to be greatly deformed during the contact with the quenching liquid, and is not easy to be greatly worn with the abutment plate 36 during the movement, thereby reducing the probability of cracks and improving the processing quality of the square tube. When the amount of quenching liquid input by the quenching liquid pipe 33 increases, the conical disk 383 undergoes further elastic deformation, and the upper end of the conical disk 383 moves downward along the quenching cavity 311 of the conical structure. The conical disk 383 cancels the covering of the quenching hole 312, so that more quenching liquid enters the inner cavity of the quenching outer mold 31 through the quenching hole 312. The quenching drum 381 is made of elastic material, and the quenching drum 381 is not easy to damage the surface of the opposite tube due to excessive pressure, thereby reducing the probability of defects. At the same time, the flow rate of the quenching liquid in the inner cavity of the quenching outer mold 31 increases, which speeds up the quenching speed of the opposite tube and improves production efficiency. When the quenching of the square tube is basically completed, the amount of quenching liquid input by the quenching liquid pipe 33 is reduced. At this time, the conical disk 383 gradually returns to its initial state and drives the quenching drum 381 to rise. The quenching liquid is discharged after being collected through the collecting pipe 34 under the insulation plate 35. Since the temperature of the quenching liquid increases after quenching, the collecting pipe 34 is arranged under the insulation plate 35, so that the collected quenching liquid plays a transitional role of slowly cooling the square tube, so that the square tube is not easy to produce defects due to excessive temperature difference when entering the quenching outer mold 31, further improving the production quality and production accuracy, and improving the production efficiency of the square tube.

[0034] The end deformed into a square tube is further moved into the inner cavity of the correction outer mold 32, and the inner cavity of the correction outer mold 32 fits the outer surface of the square tube, so that the square tube after quenching is further cooled and shaped, reducing the probability of dents and defects. One end of the shaped square tube continues to move into the guide mold 37, and the guide mold 37 guides and supports the square tube, so that the subsequent round tube is not easy to deviate during the movement, which is conducive to meeting the requirements of production accuracy, improving the service life of the square tube, and improving the production efficiency of the square tube.

[0035] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A device for preparing square tubes from round tubes based on the mechanism of metal high temperature plastic deformation control, characterized in that: It comprises a frame (1), and a thermal deformation mechanism (2) and a quenching correction mechanism (3) both arranged on the frame (1), wherein the thermal deformation mechanism (2) is used to perform high-temperature plastic deformation on a round tube, and the quenching correction mechanism (3) is used to perform quenching treatment on a deformed square tube; The thermal deformation mechanism (2) comprises a preheating component (21), a shaping component (22), an inner mold (23) and a fixing member (24); the preheating component (21) comprises a preheating outer mold (211) and a preheating rod group (212); the shaping component (22) comprises a shaping outer mold (221) and a heating rod group (222); The preheating outer mold (211) and the shaping outer mold (221) are both arranged on the frame (1); the preheating rod group (212) is arranged inside the preheating outer mold (211); the heating rod group (222) is arranged inside the shaping outer mold (221); the inner cavity of the preheating outer mold (211) is cylindrical; the inner cavity of the shaping outer mold (221) close to one end of the preheating outer mold (211) is cylindrical; The inner cavity of the mold (221) at one end away from the preheating outer mold (211) is in the shape of a square column, the fixing member (24) is arranged on the frame (1), one end of the inner mold (23) is arranged on the fixing member (24), and the other end passes through the preheating outer mold (211) and is arranged inside the shaping outer mold (221), and the inner mold (23) is structurally compatible with the inner cavity of the preheating outer mold (211) and the inner cavity of the shaping outer mold (221); The quenching correction mechanism (3) comprises a quenching outer mold (31), a correction outer mold (32), a quenching liquid pipe (33) and a collecting pipe (34); The quenching outer die (31) and the correction outer die (32) are both arranged on the frame (1); the quenching liquid pipe (33) and the collecting pipe (34) are both arranged on the quenching outer die (31); the inner cavities of the quenching outer die (31) and the correction outer die (32) are both square column-shaped; a quenching cavity (311) is provided inside a wall plate of the quenching outer die (31); the quenching liquid pipe (33) is in communication with the quenching cavity (311); the quenching cavity (311) is in communication with the inner cavity of the quenching outer die (31); and the collecting pipe (34) is in communication with the inner cavity of the quenching outer die (31).

2. According to claim 1, a device for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism, characterized in that: The quenching correction mechanism (3) further comprises a plurality of abutment plates (36), wherein the abutment plates (36) are arranged at the inner cavity of the quenching outer die (31).

3. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 2 is characterized in that: The quenching correction mechanism (3) further comprises a correction assembly (38), wherein the correction assembly (38) comprises a quenching drum (381) and a connecting pipe (382). The connecting pipe (382) is arranged inside the quenching outer mold (31), and the quenching drum (381) is arranged at the outlet end of the connecting pipe (382).

4. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 3 is characterized in that: The correction assembly (38) further includes a conical disk (383) and a guide ring (384); The conical disk (383) is arranged in the quenching chamber (311), the connecting tube (382) is fixedly arranged on the conical disk (383), the connecting tube (382) is a hollow structure, the quenching drum (381) is provided with a through hole, the quenching chamber (311) is connected with the inner cavity of the quenching outer mold (31) through the connecting tube (382) and the quenching drum (381), the quenching drum (381) is rotatably connected to a roller bracket (3821) at the bottom of the connecting tube (382), the roller bracket (3821) is fixedly connected to the connecting tube (382), the interior of the roller bracket (3821) is connected with the interior of the connecting tube (382), and the guide ring (384) is fixedly arranged on the quenching outer mold (31) at a position corresponding to the quenching chamber (311).

5. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 4 is characterized in that: The quenching chamber (311) is a conical structure, the conical disk (383) is made of elastic material, and the connecting pipe (382) is slidably disposed at the center of the guide ring (384).

6. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to any one of claims 1 to 5, characterized in that: The quenching outer die (31) is also provided with a plurality of quenching holes (312) therein; the quenching cavity (311) is connected to the inner cavity of the quenching outer die (31) via the plurality of quenching holes (312); in a natural state, the side wall of the conical disk (383) blocks the opening of the quenching hole (312).

7. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 1 is characterized in that: The quenching correction mechanism (3) further comprises a thermal insulation plate (35), the thermal insulation plate (35) being arranged on the quenching outer die (31) and being located between the quenching outer die (31) and the shaping outer die (221), the collecting pipe (34) being arranged on the thermal insulation plate (35), and the inner cavity of the thermal insulation plate (35) being in the shape of a square column.

8. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 1 is characterized in that: The quenching correction mechanism (3) further comprises a guide die (37), wherein the guide die (37) is arranged at one end of the frame (1) close to the correction outer die (32), and the inner cavity of the guide die (37) is in the shape of a square column.

9. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 1, characterized in that: The thermal deformation mechanism (2) further comprises an inner mould heat-insulating rod group (25), wherein the inner mould heat-insulating rod group (25) is arranged inside the inner mould (23).

10. The equipment for preparing square tubes from round tubes based on the metal high temperature plastic deformation control mechanism according to claim 1, characterized in that: It also comprises an atmosphere protection cover (4), wherein the atmosphere protection cover (4) is detachably connected to the frame (1).

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