A low-temperature forging process for high-performance frogs

Abstract

The present invention relates to the technical field of alloy processing and discloses a low-temperature forging process for a high-performance frog. The specific steps of the process are as follows: step 1: material heating, selecting high-strength alloy steel as the raw material of the frog and heating it to 650°C-800°C to ensure that the plasticity and toughness of the material are suitable for forging; step 2: preliminary forging, performing preliminary forging on the heated material, forging it into the preliminary shape of the frog using a die forging process to ensure basic size and shape; by gradually reducing the roller gap, the frog can achieve higher precision and uniform deformation during the rolling process, and this method helps to ensure the consistency and repeatability of each rolling stage, thereby improving the consistency and quality of the final product; the method of gradually reducing the roller gap can effectively reduce the internal stress generated in the frog during the rolling process, and by uniformly applying pressure, the mechanical properties of the final product are optimized, and possible stress concentration problems are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of alloy processing, in particular to a low-temperature forging process for a high-performance frog. Background Art

[0002] In railway systems, frogs are key components of turnouts, their primary function being to guide the wheels smoothly from one track to the other. Traditional frog manufacturing processes often rely on high-temperature forging and conventional rolling techniques. However, these processes often suffer from issues such as difficulty fully utilizing material properties, complex heat treatment processes, high manufacturing costs, and a short service life. The increasing speed and heavy load requirements of railway transportation systems are placing higher demands on frog performance, such as enhanced wear resistance, improved fatigue resistance, and a longer service life.

[0003] Against this backdrop, low-temperature forging and rolling, as a novel processing technology, is increasingly being applied to the manufacture of high-performance frogs. By performing forging and rolling at temperatures lower than those used in traditional processes, this process effectively reduces material overheating, preserves the steel's fine-grained structure, and significantly improves the frog's mechanical properties. Furthermore, low-temperature forging and rolling simplifies the heat treatment process, reduces production costs, and mitigates fatigue cracking and wear that can occur in frogs over long-term use. Therefore, researching and developing low-temperature forging and rolling processes for high-performance frogs has significant engineering significance and application value.

[0004] In the forging and rolling process, cold rolling is a multi-pass rolling process performed at or slightly above room temperature. The material is rolled in a cold state, resulting in greater resistance to deformation, but also achieving higher dimensional accuracy and surface quality. Cold rolling is often used in the production of thin plates and high-precision metal materials. In existing technologies, multiple sets of rollers are deployed, with varying gaps between each set. The goal is to achieve fine rolling of the material by gradually reducing the gap between the rollers, thereby achieving the desired thickness and surface quality. However, due to the varying gaps between the rollers, the material continuously experiences varying degrees of compression and deformation during rolling, which can easily generate uneven internal stress within the material. This uneven internal stress can cause deformation, cracking, or warping during subsequent processing or use, affecting the quality of the final product. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a low-temperature forging process for a high-performance frog, aiming to alleviate the above-mentioned problems at least to a certain extent.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A low-temperature forging process for a high-performance frog, the specific steps of the process are as follows:

[0008] Step 1: Material heating: Use high-strength alloy steel as the raw material for the frog and heat it to 650-800°C to ensure that the plasticity and toughness of the material are suitable for forging;

[0009] Step 2: Preliminary forging: the heated material is preliminarily forged, and the die forging process is used to forge it into the preliminary shape of the frog to ensure the basic size and shape;

[0010] Step 3: Low temperature rolling: At room temperature or slightly above room temperature, the frog after preliminary forging is subjected to low temperature rolling by rolling equipment. The method of multiple passes with small deformation is adopted to gradually reduce the gap between the rollers, thereby effectively controlling the accumulation of internal stress and improving the precision and surface quality of the material.

[0011] Step 4: Final annealing: After the rolling process is completed, the frog is heated to an appropriate temperature and slowly cooled to further stabilize the grain structure of the material and improve the toughness and fatigue resistance of the frog;

[0012] Step 5: Forming and cooling, which involves final forging to achieve the frog's final shape and size. The frog is then slowly cooled and surface treated to enhance its wear and corrosion resistance, ensuring its long-term performance in the track system.

[0013] Among them, the rolling equipment described in step three includes a work frame, a platform is connected to the work frame, a plurality of conveying shafts are provided on the platform, a first rolling roller is provided on the work frame, a second rolling roller is provided on the platform, a through channel is provided between the first rolling roller and the second rolling roller, two groups of positioning frames are provided on the work frame, a conveying component for synchronously rotating a plurality of the conveying shafts is provided between the platform and the work frame, the conveying shaft can move the position of the first rolling roller downward when rotating counterclockwise, shortening the preset height of the through channel, a positioning component for moving the positioning frame is provided between the conveying shaft and the positioning frame, the positioning frame moves toward the fork workpiece, and the positioning component can move the position of the positioning frame when the conveying shaft rotates.

[0014] Preferably, both sides of the platform are slidingly connected to limit frames, the first roller is rotatably connected between the two limit frames, the work frame is rotatably connected to a first screw rod, the first screw rod is a reciprocating screw rod, and the limit frame is threadedly connected to the first screw rod.

[0015] Preferably, the conveying component includes connecting openings on the conveying shafts located on the leftmost and rightmost sides of the platform, a traction rope is wound in the connecting opening, a movable plate is slidably connected between the work frame and the platform, one end of the traction rope is connected to the movable plate, a first chain transmission mechanism is connected between every two conveying shafts, grooves are respectively provided at both ends of the conveying shaft, and a spring is connected between the groove and the platform.

[0016] Preferably, racks are connected to both sides of the movable plate, a gear is connected to the first screw rod, and a ratchet mechanism is provided between the gear and the first screw rod.

[0017] Preferably, the bottom of the platform is connected to a bracket, a second screw is rotatably connected to the bracket, the movable plate is threadedly connected to the second screw, the bracket is connected to a first motor, and the drive shaft of the first motor is connected to the second screw.

[0018] Preferably, the positioning component includes a connecting shaft rotatably connected to the work frame, a third screw rod is connected to the connecting shaft, and the third screw rod is a reciprocating screw rod. The positioning frame is slidably connected to the work frame.

[0019] Preferably, a second chain transmission mechanism is connected between the connecting shaft and one of the conveying shafts.

[0020] Preferably, a second motor is connected to the limit frame, the drive shaft of the second motor is connected to the first roller, a third motor is connected to the platform, the drive shaft of the third motor is connected to the second roller, and an avoidance opening is provided on the limit frame for sleeve connection with the third motor.

[0021] In summary, the present invention mainly has the following beneficial effects:

[0022] 1. Improve rolling accuracy and uniform deformation:

[0023] By gradually narrowing the gap between the rolls, the frog achieves greater precision and uniform deformation during the rolling process. This approach helps ensure consistency and repeatability in each rolling stage, thereby improving the consistency and quality of the final product.

[0024] 2. Reduce internal stress:

[0025] By gradually reducing the gap between the rollers, the internal stress generated in the frog during the rolling process can be effectively reduced. By applying pressure evenly, the mechanical properties of the final product are optimized, possible stress concentration problems are reduced, and the service life of the frog is extended.

[0026] 3. Improve mechanical properties and stability:

[0027] The vibration generated during the rolling process can effectively help release stress within the frog material. Vibration helps evenly distribute stress across the material, reducing local stress concentrations and further optimizing the frog's mechanical properties and structural stability.

[0028] 4. Maintain a stable cooling process:

[0029] During the rolling process, the frog's temperature rises, but as it moves to the right, the height of the passage remains constant, allowing the frog to be exposed to the cooling medium or cooled naturally by air. This effectively prevents dimensional changes or deformation caused by uneven cooling, ensuring the final dimensions and mechanical properties of the frog remain stable.

[0030] 5Precisely control the position of the workpiece:

[0031] As the conveyor shaft rotates, the positioning components dynamically adjust the position of the positioning frame, accurately controlling the position of the workpiece during the rolling process. This precise positioning helps prevent unnecessary movement or deviation of the workpiece during rolling, further improving the machining accuracy and consistency of the workpiece and ensuring that the final shape and performance of the frog meet high standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a frog forging process flow chart of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the platform structure of the present invention;

[0035] Figure 4 It is a schematic structural diagram of the second roller of the present invention;

[0036] Figure 5 It is a schematic diagram of the limit frame structure of the present invention;

[0037] Figure 6 It is a schematic structural diagram of the positioning component of the present invention;

[0038] Figure 7 It is a schematic diagram of the conveying shaft structure of the present invention;

[0039] Figure 8 It is a schematic structural diagram of the moving parts of the present invention;

[0040] Figure 9 It is a schematic structural diagram of the ratchet mechanism of the present invention.

[0041] Reference numerals:

[0042] 100, rolling equipment; 101, work frame; 102, platform; 103, conveyor shaft; 104, first roller; 105, second roller; 106, passage; 107, positioning frame;

[0043] 200, limit frame; 201, first screw rod; 202, connecting opening; 203, traction rope; 204, movable plate; 205, first chain transmission mechanism; 206, groove; 207, spring; 208, rack; 209, gear; 210, ratchet mechanism; 211, bracket; 212, second screw rod; 213, first motor;

[0044] 300, connecting shaft; 301, third screw rod; 302, second chain transmission mechanism;

[0045] 400, second motor; 401, third motor; 402, avoidance opening. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] refer to Figures 1-9 A low-temperature forging process for a high-performance frog is disclosed. The specific steps of the process are as follows:

[0048] Step 1: Material heating: Use high-strength alloy steel as the raw material for the frog and heat it to 650-800°C to ensure that the plasticity and toughness of the material are suitable for forging;

[0049] Step 2: Preliminary forging: the heated material is preliminarily forged, and the die forging process is used to forge it into the preliminary shape of the frog to ensure the basic size and shape;

[0050] Step 3: Low temperature rolling: At room temperature or slightly above room temperature, the frog after preliminary forging is subjected to low temperature rolling by the rolling equipment 100, using a method of multiple passes with small deformation to gradually reduce the gap between the rollers, thereby effectively controlling the accumulation of internal stress and improving the precision and surface quality of the material;

[0051] Step 4: Final annealing: After the rolling process is completed, the frog is heated to an appropriate temperature and slowly cooled to further stabilize the grain structure of the material and improve the toughness and fatigue resistance of the frog;

[0052] Step 5: Forming and cooling, which involves final forging to achieve the frog's final shape and size. The frog is then slowly cooled and surface treated to enhance its wear and corrosion resistance, ensuring its long-term performance in the track system.

[0053] Wherein, the rolling equipment 100 in step 3 includes a work frame 101, a platform 102 is connected to the work frame 101, a plurality of conveying shafts 103 are provided on the platform 102, a first rolling roller 104 is provided on the work frame 101, a second rolling roller 105 is provided on the platform 102, a through channel 106 is provided between the first rolling roller 104 and the second rolling roller 105, two sets of positioning frames 107 are provided on the work frame 101, and a conveying component for synchronously rotating the plurality of conveying shafts 103 is provided between the platform 102 and the work frame 101, and the conveying shaft 103 can move the position of the first rolling roller 104 downward when rotating counterclockwise, shortening the preset height of the through channel 106, and a positioning component for moving the positioning frame 107 is provided between the conveying shaft 103 and the positioning frame 107, and the positioning frame 107 moves toward the frog workpiece, and the positioning component can move the position of the positioning frame 107 when the conveying shaft 103 rotates;

[0054] By setting up the platform 102, when in use, the frog after preliminary forging can be placed on the platform 102 at room temperature, and the forklift workpiece is placed between one of the positioning frames 107. When rolling, the operator can start the conveying component and rotate the first roller 104 and the second roller 105. When the conveying component rotates the conveying shaft 103 clockwise, the first roller 104 rotates counterclockwise and the second roller 105 rotates counterclockwise. When the conveying shaft 103 rotates to convey the frog workpiece to pass through the channel 106, the rotation of the first roller 104 and the second roller 105 can realize low-temperature rolling of the frog. When the frog workpiece passes through the channel 106 and reaches the right side of the platform 102, the conveying component can be used to reversely rotate the conveying shaft 103, so that the conveying shaft 103 can rotate counterclockwise. During this process, the first roller 104 is moved downward to shorten the height of the passage 106, further reducing the gap between the rollers and achieving more precise rolling. After the workpiece is conveyed to the left side of the platform 102, the conveying assembly can be used to convey the workpiece clockwise to the right side of the platform 102. During this process, the first roller 104 remains stationary and is only moved by the counterclockwise rotation of the conveyor shaft 103. That is, except for the initial conveyance of the workpiece to the right side of the platform 102, each subsequent conveyance will only shorten the passage 106 by the same distance after the workpiece has moved left and right on the platform 102 once. After each shortening of the passage 106, the workpiece will continue rolling on the platform 102. This process gradually reduces the gap, achieving higher precision and more uniform deformation during rolling. The same shortening distance each time helps ensure consistency and repeatability in each rolling stage, thereby improving the consistency and quality of the final product. By gradually reducing the gap between the rollers, the material deforms more evenly during each rolling process, reducing the risk of overheating and improving the mechanical properties and long-term stability of the frog. Ultimately, after completing the entire rolling process, the frog can better meet the requirements of high performance and long life, enhancing its reliability and durability in the railway system. This method can effectively reduce the internal stress generated in the frog during the rolling process and, by gradually reducing the gap between the rollers, further improve the frog's dimensional accuracy and surface quality. Shortening the height of the passage 106 ensures that the frog is subjected to uniform pressure distribution during the rolling process, thereby optimizing the mechanical properties of the final product, reducing potential stress concentration issues, and extending the frog's service life. Furthermore, because the frog workpiece is transported via multiple, spaced-apart conveyor shafts 103, the vibrations generated during transportation can effectively help relieve stress within the frog material.Vibration helps to evenly distribute stress in the material during the rolling process, reducing local stress concentration, thereby further optimizing the mechanical properties and structural stability of the frog. Furthermore, during rolling, the temperature of the frog will increase. When the frog workpiece moves to the right for the first time, each time the workpiece moves to the right, since the height of the passage 106 has not been shortened again, in order to prevent overheating from affecting material properties and maintain rolling stability, the frog will be exposed to a cooling medium or naturally cooled by air during the rightward movement, and the height of the passage 106 is kept unchanged, which helps to ensure that the frog can maintain a uniform pressure distribution during the cooling process, thereby avoiding deformation or stress concentration caused by uneven cooling. Through this method, the control of the cooling process can effectively prevent dimensional changes caused by temperature fluctuations, ensuring that the final size and mechanical properties of the frog are stable. Furthermore, when the conveying shaft 103 rotates, the position of the positioning frame 107 can be moved by the positioning component. When the frog workpiece is located on the platform 102, the positioning frame 107 is continuously moved away from and close to the workpiece. When the positioning frame 107 moves close to the workpiece and contacts the workpiece, the workpiece can be positioned to prevent unnecessary movement or deviation of the workpiece during the rolling process. In this way, the contact of the positioning frame 107 can also help to more accurately control the position of the workpiece during the rolling process, thereby further improving the processing accuracy and consistency of the workpiece, reducing processing errors, and ensuring that the final shape and performance of the frog meet high standards.

[0055] As a further solution of the present invention, both sides of the platform 102 are slidably connected to the limit frames 200, the first roller 104 is rotatably connected between the two limit frames 200, and the work frame 101 is rotatably connected to the first screw rod 201, the first screw rod 201 is a reciprocating screw rod, and the limit frame 200 is threadedly connected to the first screw rod 201;

[0056] By providing a first screw rod 201, when the conveying unit rotates the conveyor shaft 103 clockwise to allow the workpiece to pass through the passage 106 and reach the right side of the platform 102, the first screw rod 201 is not rotated. When the conveying unit rotates the conveyor shaft 103 counterclockwise, just as the workpiece is about to enter the passage 106, the first screw rod 201 is rotated by a preset angle, allowing the limit frame 200 to move downward by a preset distance. This movement shortens the height of the passage 106, achieving a finer rolling gap and thus improving the machining accuracy of the frog. This fine adjustment function allows the roller gap to be gradually reduced according to the actual needs of the workpiece during the rolling process, ensuring that the machining accuracy meets the requirements at each rolling stage. Furthermore, shortening the height of the passage 106 helps to evenly apply pressure, prevent excessive compression or deformation, and ensure the structural stability and quality of the final frog product.

[0057] As a further embodiment of the present invention, the conveying component includes connecting openings 202 provided on the conveying shafts 103 located on the leftmost and rightmost sides of the platform 102, a traction rope 203 is wound in the connecting openings 202, a movable plate 204 is slidably connected between the work frame 101 and the platform 102, one end of the traction rope 203 is connected to the movable plate 204, a first chain transmission mechanism 205 is connected between every two conveying shafts 103, a groove 206 is provided at each end of the conveying shaft 103, and a spring 207 is connected between the groove 206 and the platform 102;

[0058] By setting the spring 207, the spring 207 on the rightmost conveying shaft 103 is in a torsion state in the initial state and has a certain potential energy. When used, the position of the push plate can be moved. When the push plate moves, the traction rope 203 on its left side can be used to force the leftmost conveying shaft 103 to rotate. At the same time, the rightmost conveying shaft 103 can be rotated by the force of the spring 207, and the traction rope 203 is wound up. In this way, through the pulling of the traction rope 203, the leftmost conveying shaft 103 and the rightmost conveying shaft 103 can work together. In addition, the first chain transmission mechanism 205 set up can effectively transmit the rotational motion between the leftmost and rightmost conveying shafts 103, ensuring that each conveying shaft 103 can operate synchronously, thereby realizing continuous transportation and position adjustment of workpieces.

[0059] As a further solution of the present invention, racks 208 are connected to both sides of the movable plate 204, a gear 209 is connected to the first screw rod 201, and a ratchet mechanism 210 is provided between the gear 209 and the first screw rod 201;

[0060] By setting the rack 208, when the movable plate 204 moves to the right, the conveying shaft 103 can be rotated clockwise by the traction rope 203, so that the workpiece can be moved to the right side of the platform 102. When the workpiece passes through the channel and completely reaches the right side of the through channel 106, the rack 208 is meshed with the gear 209. When the movable plate 204 is reset to the initial position, the conveying shaft 103 rotates counterclockwise. When the workpiece has not yet reached the through channel 106, the rack 208 follows the reset movement of the movable plate 204, allowing the gear 209 to rotate and the first screw rod 201 to rotate through the ratchet mechanism 210. After the rack 208 is completely disengaged from the gear 209, the purpose of adjusting the height of the channel can be achieved. The ratchet mechanism 210 is set between the first screw rod 201 and the gear 209 to prevent the gear 209 from rotating in the opposite direction, ensuring that the first screw rod 201 remains in the new preset position. , so that the height of the workpiece passing through the channel 106 remains unchanged when the workpiece is conveyed to the right. This design can provide precise control during the process of conveying the workpiece and passing through the channel 106, so that each adjustment of the height of the workpiece passing through the channel 106 can be stable and consistent, thereby improving the accuracy and reliability of the entire rolling process. Furthermore, during the rolling process, the position of the movable plate 204 can be appropriately displaced, and only after the rack 208 is engaged with the gear 209, the rack 208 moves a preset distance, ensuring that the distance the first roller 104 moves downward is the same each time. After multiple distance adjustments and the rolling process is completed, the movable plate 204 can be displaced a longer distance and then reset, allowing the first screw rod 201 to rotate a preset number of revolutions. This arrangement utilizes the motion characteristics of the reciprocating screw to achieve the function of the limit frame 200 moving downward to the limit distance and then starting to reset upward. In this way, the first screw rod 201 can stably control the movement of the limit frame 200 through the ratchet mechanism 210 engaged with the gear 209, ensuring that the first roller 104 can move upward to its initial position and prepare for subsequent rolling operations.

[0061] As a further embodiment of the present invention, a bracket 211 is connected to the bottom of the platform 102, a second screw rod 212 is rotatably connected to the bracket 211, the movable plate 204 is threadedly connected to the second screw rod 212, a first motor 213 is connected to the bracket 211, and a drive shaft of the first motor 213 is connected to the second screw rod 212;

[0062] By providing the first motor 213, when the first motor 213 is started, its drive shaft rotates and drives the second screw rod 212 to rotate. Due to the threaded connection between the second screw rod 212 and the movable plate 204, the rotation of the second screw rod 212 causes the movable plate 204 to move along a predetermined track. The movement of the movable plate 204 further affects the rack 208, gear 209, and ratchet mechanism 210 connected thereto, thereby achieving precise control of the rolling process.

[0063] As a further solution of the present invention, the positioning component includes a connecting shaft 300 rotatably connected to the work frame 101, the connecting shaft 300 is connected to a third screw rod 301, the third screw rod 301 is a reciprocating screw rod, and the positioning frame 107 is slidably connected to the work frame 101;

[0064] By providing the connecting shaft 300, when the conveying shaft 103 rotates, the connecting shaft 300 can be rotated synchronously. The rotation of the connecting shaft 300 can move the positioning frame 107 through the third screw rod 301. Specifically, the third screw rod 301 acts as a reciprocating screw rod. Through its axial reciprocating motion, it converts the rotational motion of the connecting shaft 300 into the translational motion of the positioning frame 107, thereby achieving the positioning effect of the frog workpiece.

[0065] As a further solution of the present invention, a second chain transmission mechanism 302 is connected between the connecting shaft 300 and one of the conveying shafts 103;

[0066] By providing the second chain transmission mechanism 302 , the movement trajectory of the positioning frame 107 on the work frame 101 can accurately match the rotation of the conveying shaft 103 .

[0067] As a further solution of the present invention, a second motor 400 is connected to the limiting frame 200, and a drive shaft of the second motor 400 is connected to the first roller 104. A third motor 401 is connected to the platform 102, and a drive shaft of the third motor 401 is connected to the second roller 105. The limiting frame 200 is provided with an avoidance opening 402 that is sleeved with the third motor 401.

[0068] By providing a second motor 400, the second motor 400 can drive the first roller 104 to rotate, thereby controlling the working state and speed of the roller. At the same time, the third motor 401 is connected to the second roller 105 via its drive shaft, allowing the second roller 105 to rotate independently, achieving precise processing of the material. The avoidance opening 402 on the limit frame 200 is designed to be nested with the third motor 401 to prevent the driving components of the third motor 401 from interfering with the limit frame 200 during operation. The provision of this avoidance opening 402 not only provides sufficient space, but also allows the third motor 401 to be adjusted and maintained when necessary without affecting the operation of the entire system.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low temperature forging process for a high performance frog, characterized in that: The specific steps of this process are: Step 1: Material heating: Use high-strength alloy steel as the raw material for the frog and heat it to 650-800°C to ensure that the plasticity and toughness of the material are suitable for forging; Step 2: Preliminary forging: the heated material is preliminarily forged, and the die forging process is used to forge it into the preliminary shape of the frog to ensure the basic size and shape; Step 3: low temperature rolling, at room temperature or slightly above room temperature, the frog after preliminary forging is subjected to low temperature rolling by a rolling device (100), using a method of multiple passes with small deformations to gradually reduce the gap between the rollers, thereby effectively controlling the accumulation of internal stress and improving the precision and surface quality of the material; Step 4: Final annealing: After the rolling process is completed, the frog is heated to an appropriate temperature and slowly cooled to further stabilize the grain structure of the material and improve the toughness and fatigue resistance of the frog; Step 5: Forming and cooling, which involves final forging to achieve the frog's final shape and size. The frog is then slowly cooled and surface treated to enhance its wear and corrosion resistance, ensuring its long-term performance in the track system. The rolling equipment (100) described in step 3 includes a work frame (101), a platform (102) is connected to the work frame (101), a plurality of conveying shafts (103) are provided on the platform (102), a first rolling roller (104) is provided on the work frame (101), a second rolling roller (105) is provided on the platform (102), a passage (106) is provided between the first rolling roller (104) and the second rolling roller (105), two sets of positioning frames (107) are provided on the work frame (101), and a conveying component for synchronously rotating the plurality of conveying shafts (103) is provided between the platform (102) and the work frame (101). When the shaft (103) rotates clockwise, it drives the frog workpiece through the passage (106) and cooperates with the rotation of the first roller (104) and the second roller (105) to perform low-temperature rolling on the frog workpiece. When the conveying shaft (103) rotates counterclockwise, it can move the position of the first roller (104) downward to shorten the preset height of the passage (106). A positioning component for moving the positioning frame (107) is provided between the conveying shaft (103) and the positioning frame (107). The positioning frame (107) moves toward the frog workpiece, and the positioning component can move the position of the positioning frame (107) when the conveying shaft (103) rotates.

2. The low temperature forging process for a high performance frog according to claim 1, characterized in that: The two sides of the platform (102) are respectively slidably connected to the limiting frames (200), the first roller (104) is rotatably connected between the two limiting frames (200), and the work frame (101) is rotatably connected to a first screw rod (201), the first screw rod (201) is a reciprocating screw rod, and the limiting frame (200) is threadedly connected to the first screw rod (201).

3. The low temperature forging process for a high performance frog according to claim 2, characterized in that: The conveying component includes a connecting opening (202) opened on the conveying shaft (103) located on the leftmost and rightmost sides of the platform (102), a traction rope (203) is wound in the connecting opening (202), a movable plate (204) is slidably connected between the work frame (101) and the platform (102), one end of the traction rope (203) is connected to the movable plate (204), a first chain transmission mechanism (205) is connected between every two conveying shafts (103), a groove (206) is respectively opened at both ends of the conveying shaft (103), and a spring (207) is connected between the groove (206) and the platform (102).

4. The low temperature forging process for a high performance frog according to claim 3, characterized in that: Racks (208) are respectively connected to both sides of the movable plate (204), a gear (209) is connected to the first screw rod (201), and a ratchet mechanism (210) is provided between the gear (209) and the first screw rod (201).

5. The low temperature forging process for a high performance frog according to claim 3, characterized in that: The bottom of the platform (102) is connected to a bracket (211), a second screw rod (212) is rotatably connected to the bracket (211), the movable plate (204) is threadedly connected to the second screw rod (212), a first motor (213) is connected to the bracket (211), and a drive shaft of the first motor (213) is connected to the second screw rod (212).

6. The low temperature forging process for a high performance frog according to claim 1, characterized in that: The positioning component includes a connecting shaft (300) rotatably connected to the work frame (101), a third screw rod (301) is connected to the connecting shaft (300), and the third screw rod (301) is a reciprocating screw rod. The positioning frame (107) is slidably connected to the work frame (101).

7. The low temperature forging process for a high performance frog according to claim 6, characterized in that: A second chain transmission mechanism (302) is connected between the connecting shaft (300) and one of the conveying shafts (103).

8. The low temperature forging process for a high performance frog according to claim 2, characterized in that: The limiting frame (200) is connected to a second motor (400), a driving shaft of the second motor (400) is connected to the first roller (104), the platform (102) is connected to a third motor (401), a driving shaft of the third motor (401) is connected to the second roller (105), and the limiting frame (200) is provided with an avoidance opening (402) that is sleeved with the third motor (401).

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