Low-temperature forging and rolling process for high-performance frog

Abstract

The invention relates to the technical field of alloy treatment, and discloses a low-temperature forging and rolling process for a high-performance frog, which comprises the following specific steps: step 1, material heating: selecting high-strength alloy steel as a raw material of the frog, and heating the high-strength alloy steel to 650-800 DEG C to ensure that the plasticity and toughness of the material are suitable for forging; 2, preliminary forging is conducted, specifically, the heated material is subjected to preliminary forging, the material is forged into the preliminary shape of the frog through a die forging technology, and the basic size and shape are ensured; by gradually reducing the gap between the rollers, the frog obtains higher precision and uniform deformation in the rolling process, and the method is beneficial to ensuring the consistency and repeatability of each rolling stage, so that the consistency and quality of a final product are improved; by adopting the mode of gradually reducing the gap between the rollers, the internal stress generated by the frog in the rolling process can be effectively reduced, the mechanical property of a final product is optimized by uniformly applying pressure, and the possible stress concentration problem is reduced.

Description

Technical Field

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

[0002] In the railway system, the frog is one of the key components of the turnout, and its main function is to guide the wheels to smoothly transition from one track to another. Traditional frog manufacturing processes mostly use high-temperature forging and conventional rolling technology. However, these processes often have problems such as difficulty in fully utilizing material properties, complex heat treatment procedures, high manufacturing costs, and short service life. With the development of high-speed and heavy-load railway transportation systems, higher requirements are placed on the performance of frogs, such as stronger wear resistance, better fatigue resistance, and longer service life.

[0003] In this context, low temperature forging and rolling technology, as a new processing technology, has gradually been applied to the manufacture of high-performance frogs. This process can effectively reduce the overheating of the material and retain the fine grain structure of the steel by forging and rolling at a temperature lower than the traditional process, thereby significantly improving the mechanical properties of the frog. In addition, the low temperature forging and rolling process can also simplify the heat treatment process, reduce production costs, and reduce fatigue cracks and wear problems that may occur in the frog during long-term use. Therefore, researching and developing the low temperature forging and rolling process of high-performance frogs has important engineering significance and application value.

[0004] In the forging and rolling process, cold rolling is a multi-pass rolling process at room temperature or slightly above room temperature. The material is rolled in a cooled state, and the deformation resistance is large, but higher dimensional accuracy and surface quality can be obtained. Cold rolling is often used in the production of thin plates and high-precision metal materials. In the prior art, multiple groups of rollers distributed up and down are used, and the gaps between each group of rollers are different. The purpose is to achieve fine rolling of the material by gradually reducing the gap between the rollers, so as to achieve the ideal thickness and surface quality. Due to the different gaps between each group of rollers, the material will continuously experience different degrees of compression and deformation during the rolling process, which is easy to produce uneven internal stress inside the material. This uneven internal stress may cause deformation, cracks or warping in 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:

[0008] Step 1: Material heating: high-strength alloy steel is selected as the raw material of the frog and heated to 650℃-800℃ to ensure that the plasticity and toughness of the material are suitable for forging;

[0009] Step 2: Preliminary forging: Preliminary forging is performed on the heated material, 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 a rolling device, and the roller gap is gradually reduced by a method of multiple passes with small deformation, 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, final precision forging is performed to make the frog reach the final shape and size, and then slowly cooled and surface treated to enhance the frog's wear resistance and corrosion resistance to ensure its long-term performance in the track system;

[0013] Among them, the rolling equipment described in step three includes a work frame, the work frame is connected to a platform, the platform is provided with multiple conveying shafts, the work frame is provided with a first rolling roller, the platform is provided with a second rolling roller, a passing channel is provided between the first rolling roller and the second rolling roller, and two groups of positioning frames are provided on the work frame. A conveying component for synchronously rotating multiple conveying shafts is provided between the platform and the work frame. When the conveying shaft rotates counterclockwise, the position of the first rolling roller can be moved downward to shorten the preset height of the passing 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 slidably connected to limit frames, the first rolling 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 opened 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 opened 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, a bracket is connected to the bottom of the platform, a second screw rod is rotatably connected to the bracket, the movable plate is threadedly connected to the second screw rod, a first motor is connected to the bracket, and a driving shaft of the first motor is connected to the second screw rod.

[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, the third screw rod is a reciprocating screw rod, and 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, a drive shaft of the second motor is connected to the first roller, a third motor is connected to the platform, a drive shaft of the third motor is connected to the second roller, and an avoidance opening for the third motor is provided on the limit frame.

[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 at 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 evenly applying pressure, the mechanical properties of the final product can be optimized, possible stress concentration problems can be reduced, and the service life of the frog can be extended.

[0026] 3. Improve mechanical properties and stability:

[0027] The vibration generated during the rolling process can effectively help release the stress inside the frog material. Vibration helps the material to evenly distribute stress, reduce the phenomenon of local stress concentration, and further optimize the mechanical properties and structural stability of the frog.

[0028] 4. Maintain a stable cooling process:

[0029] During the rolling process, the temperature of the frog increases, and in the process of moving to the right, the height of the passage is kept unchanged, so that the frog can contact the cooling medium or cool naturally through the air. This can effectively prevent the dimensional change or deformation caused by uneven cooling and ensure the stability of the final size and mechanical properties of the frog.

[0030] 5Precisely control the workpiece position:

[0031] When the conveyor shaft rotates, the position of the positioning frame can be dynamically adjusted by the positioning component to accurately control the position of the workpiece during the rolling process. This precise positioning helps prevent unnecessary movement or deviation of the workpiece during the rolling process, thereby further improving the processing 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 It 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 is a schematic diagram of the structure of the second roller of the present invention;

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

[0037] Figure 6 It is a schematic diagram of the structure 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 diagram of the structure of the moving parts of the present invention;

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

[0041] Reference numerals:

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

[0043] 200, limit frame; 201, first screw rod; 202, connecting opening; 203, traction rope; 204, moving 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0047] refer to Figure 1-Figure 9 , a low temperature forging process for a high performance frog, the specific steps of the process are:

[0048] Step 1: Material heating: high-strength alloy steel is selected as the raw material of the frog and heated to 650℃-800℃ to ensure that the plasticity and toughness of the material are suitable for forging;

[0049] Step 2: Preliminary forging: Preliminary forging is performed on the heated material, 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, and the roller gap is gradually reduced by a method of multiple passes with small deformation, 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, final precision forging is performed to make the frog reach the final shape and size, and then slowly cooled and surface treated to enhance the frog's wear resistance and corrosion resistance to ensure its long-term performance in the track system;

[0053] Wherein, the rolling equipment 100 in step three includes a work frame 101, a platform 102 is connected to the work frame 101, a plurality of conveying shafts 103 are arranged on the platform 102, a first rolling roller 104 is arranged on the work frame 101, a second rolling roller 105 is arranged on the platform 102, a through channel 106 is provided between the first rolling roller 104 and the second rolling roller 105, two groups of positioning frames 107 are provided on the work frame 101, a conveying component for synchronously rotating the plurality of conveying shafts 103 is provided between the platform 102 and the work frame 101, 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, 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;

[0054] By setting 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 set of 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 the passage 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 passage 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. In this process, the position of the first roller 104 can be moved downward to shorten the height of the passage 106, further reduce the gap between the rollers, and achieve more precise rolling. After the workpiece is transported to the left side of the platform 102, the conveying component can be used again to transport the workpiece clockwise to the right side of the platform 102. At this time, the position of the first roller 104 is fixed, and the position of the first roller 104 will only be moved when the conveying shaft 103 rotates counterclockwise, that is, except for the first time when the workpiece is transported to the right side of the platform 102, each subsequent transport will only shorten the spacing of the passage 106 after the workpiece moves left and right on the platform 102 for one round, and the shortened distance is the same each time. After shortening the spacing of the passage 106 each time, the workpiece will continue to be rolled on the platform 102. This process gradually reduces the gap, so that the frog can obtain higher precision and uniform deformation during rolling. The same shortened distance each time helps to ensure the consistency and repeatability of each rolling stage, thereby improving the consistency and quality of the final product. Due to the method of gradually reducing the gap between the rollers, the deformation of the material in each rolling is more uniform, which reduces the risk of overheating of the material, thereby improving the mechanical properties and long-term stability of the frog. Finally, after completing the entire rolling process, the frog can better meet the requirements of high performance and long life, and improve its reliability and durability in the railway system. This method can effectively reduce the internal stress generated by the frog during the rolling process, and further improve the dimensional accuracy and surface quality of the frog by gradually reducing the gap between the rollers. Shortening the height of the passage 106 allows the frog to be subjected to uniform pressure distribution during the rolling process, thereby optimizing the mechanical properties of the final product, reducing possible stress concentration problems, and extending the service life of the frog. In addition, since the frog workpiece is transported through multiple conveying shafts 103 with spacing, the vibration generated during the transportation process can effectively help release the stress inside the frog material.Vibration helps to evenly distribute stress in the material during rolling and reduce the phenomenon of 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 subsequent 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 contact the cooling medium or be naturally cooled by air during the process of moving to the right, and keeping the height of the passage 106 unchanged will help ensure that the frog can maintain 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 the stability of the final size and mechanical properties of the frog. 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 the workpiece and closer 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 limiting frames 200, the first roller 104 is rotatably connected between the two limiting frames 200, 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 limiting frame 200 is threadedly connected to the first screw rod 201;

[0056] By setting the first screw rod 201, when the conveying component rotates the conveying 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 at this time. When the conveying component rotates the conveying shaft 103 counterclockwise, when the workpiece is about to enter the passage 106, the first screw rod 201 can be rotated by a preset angle, and the limit frame 200 can be moved downward by a preset distance. This movement can shorten the height of the passage 106 and achieve a finer rolling gap, thereby improving the processing accuracy of the frog. This fine adjustment function enables the roller gap to be gradually reduced according to the actual needs of the workpiece during the rolling process, ensuring that the processing accuracy of each rolling stage meets the requirements. At the same time, 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 solution of the present invention, 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 moving 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 moving plate 204, a first chain transmission mechanism 205 is connected between every two conveying shafts 103, grooves 206 are respectively opened at both ends 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, in the initial state, the spring 207 on the rightmost conveying shaft 103 is in a torsion 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 reeled in. 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 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 moving 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 through 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, so that the gear 209 can rotate and the first screw rod 201 can be rotated 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, so as to ensure that the first screw rod 201 remains at the new preset position. , so as to achieve the effect of keeping the height of the passage 106 unchanged when the workpiece is transported to the right. This design can provide precise control during the process of transporting the workpiece and passing through the passage 106, so that each adjustment of the height of the passage 106 can be stable and consistent, thereby improving the accuracy and reliability of the entire rolling process. Further, 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 to ensure that the distance the first roller 104 moves downward each time is the same. After multiple distance adjustments, after the rolling work is completed, the movable plate 204 can be displaced for a longer distance and then reset, so that the first screw rod 201 rotates a preset number of circles. This setting utilizes the motion characteristics of the reciprocating screw rod 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 to prepare for subsequent rolling operations.

[0061] As a further solution 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 driving shaft of the first motor 213 is connected to the second screw rod 212;

[0062] By setting the first motor 213, when the first motor 213 is started, its driving shaft rotates and drives the second screw rod 212 to rotate. Due to the threaded connection between the second screw rod 212 and the moving plate 204, the rotation of the second screw rod 212 causes the moving plate 204 to move along a predetermined track, and the movement of the moving plate 204 further affects the rack 208, the gear 209 and the 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, 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;

[0064] By setting 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, which converts the rotational motion of the connecting shaft 300 into the translational motion of the positioning frame 107 through its axial reciprocating motion, 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 moving track 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, a driving shaft of the second motor 400 is connected to the first roller 104, a third motor 401 is connected to the platform 102, a driving shaft of the third motor 401 is connected to the second roller 105, and a avoidance opening 402 is provided on the limiting frame 200 to be sleeved with the third motor 401;

[0068] By setting the 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 through its drive shaft, so that the second roller 105 can rotate independently to achieve accurate processing of the material. The avoidance opening 402 on the limit frame 200 is designed to be set with the third motor 401 to avoid the driving components of the third motor 401 from interfering with the limit frame 200 during operation. The setting 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 overall system.

[0069] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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: high-strength alloy steel is selected as the raw material of the frog and heated to 650℃-800℃ to ensure that the plasticity and toughness of the material are suitable for forging; Step 2: Preliminary forging: Preliminary forging is performed on the heated material, 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), and a 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; 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, final precision forging is performed to make the frog reach the final shape and size, and then slowly cooled and surface treated to enhance the frog's wear resistance and corrosion resistance to ensure its long-term performance in the track system; The rolling equipment (100) described in step 3 comprises a work frame (101), the work frame (101) is connected to a platform (102), the platform (102) is provided with a plurality of conveying shafts (103), the work frame (101) is provided with a first rolling roller (104), the platform (102) is provided with a second rolling roller (105), a passage (106) is provided between the first rolling roller (104) and the second rolling roller (105), the work frame (101) is provided with two sets of positioning frames (107), the platform (102) and the work frame (101) are connected to each other, and the first rolling roller (104) and the second rolling roller (105) are connected to each other. A conveying component for synchronously rotating a plurality of conveying shafts (103) is provided between the frames (101); when the conveying shaft (103) rotates counterclockwise, the position of the first roller (104) can be moved downward to shorten the preset height of the through channel (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 of a high performance frog according to claim 1, characterized in that: The two sides of the platform (102) are respectively slidably connected to limit frames (200); the first roller (104) is rotatably connected between the two limit frames (200); a first screw rod (201) is rotatably connected to the work frame (101); the first screw rod (201) is a reciprocating screw rod; and the limit frame (200) is threadedly connected to the first screw rod (201).

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

4. The low temperature forging process of a high performance frog according to claim 3, characterized in that: Racks (208) are respectively connected to the two 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 of 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), the bracket (211) is connected to a first motor (213), and a driving shaft of the first motor (213) is connected to the second screw rod (212).

6. The low temperature forging process of a high performance frog according to claim 1, characterized in that: The positioning component comprises 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 of 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 of 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) which is sleeved with the third motor (401).

Images