A forging equipment for the production and processing of stainless steel flanges and its usage method
By designing automated forging equipment, and utilizing forging hydraulic cylinders and linkage impact structures, efficient forging and automatic unloading of flanges are achieved, solving the problems of low forging efficiency and poor safety in existing technologies, and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-10
AI Technical Summary
Existing technologies for flange forging are inefficient, unsafe for unloading, labor-intensive, and dangerous for manual operation.
A forging device comprising a forging platform, a top platform, a forging bearing seat, and a linkage impact structure was designed. Power is provided by a forging hydraulic cylinder to achieve automated forging and unloading. The flange is forged at multiple angles by combining the linkage impact structure and the forging structure, and the forging process is completed within the forging bearing seat. Automatic unloading is achieved by using the removal platform.
It improves forging efficiency, reduces labor intensity, avoids the dangers of manual operation, and ensures forging quality and safety.
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Figure CN120205734B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of flange forging technology, specifically relating to a forging equipment and its usage method for the production and processing of stainless steel flanges. Background Technology
[0002] A flange, or simply flange, is a disc-shaped metal body with several holes around its perimeter for connecting other components. Two flanges are connected together by bolts, gaskets, and fasteners to form a sealed interface, enabling the transmission of gas, liquid, or solid between pipelines while ensuring good sealing and pressure resistance.
[0003] The production of flanges requires cutting steel, heating it at high temperatures, and then stamping and forging the heated material. During forging, the center hole of the flange is punched out. However, in the existing technology, the middle of the heated steel needs to be hammered first, and then the edges are hammered. The entire hammering process is inefficient, and after the hammering is completed, the high-temperature rough flange blank needs to be unloaded manually. Manual unloading is unsafe and labor-intensive. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a flange production equipment with high forging efficiency and mechanical unloading capability.
[0005] The technical solution adopted to solve the above technical problems is: the forging equipment for the production and processing of stainless steel flanges includes a forging platform and a top platform set above the forging platform. A forging bearing seat for hammering and shaping is fixedly connected through the middle of the surface of the forging platform. A linkage impact structure for multi-directional linkage forging is set at the position of the forging bearing seat.
[0006] Through the above technical solution, the forging platform supports the installation of the top platform, and the forging structure can be further tightened and fixed through the top platform. The forging bearing seat can bear the heated billet and provide a forging place for the billet. The outer side of the forging bearing seat is equipped with heat insulation material, which can effectively control the heat dissipation time of the billet and facilitate full forging. The linkage impact structure can forge various positions of the flange.
[0007] A forging structure for applying forging power is provided above the forging support.
[0008] Through the above technical solution, the forging structure is powered by a forging hydraulic cylinder, enabling the forging structure to repeatedly forge the billet.
[0009] A removal platform for removing forgings is provided on one side of the forging support.
[0010] The above technical solution enables the removal platform to remove the flange from the forging support after forging without manual intervention, reducing labor intensity and avoiding burns to workers.
[0011] Furthermore, the linkage impact structure includes several uniformly distributed circumferentially arranged limiting grooves on the surface of the forging bearing seat. Each of the limiting grooves is slidably connected to a linkage forging seat. A through hole is provided at the bottom of one side of the forging bearing seat. An annular groove is provided on the inner wall of the through hole at the position directly below the limiting groove.
[0012] Through the above technical solution, the limiting slide can realize the elastic sliding of the linkage forging seat up and down. When the linkage forging seat is impacted by the elastic forging plate, it can provide power for the ring hammer ring to impact the blank. The through hole facilitates the removal of the forging forming mold, and the ring groove can accommodate the ring hammer ring.
[0013] Furthermore, an annular hammering ring is slidably connected to the inner wall of the annular groove, and a linkage impact rod is fixedly connected to the center of the lower surface of several linkage forging seats. The end of the linkage impact rod away from the linkage forging seat is vertically and slidably connected to the forging bearing seat, and the end of the linkage impact rod away from the linkage forging seat is fixedly connected to the upper surface of the annular hammering ring.
[0014] Through the above technical solution, the annular hammering ring can fully and multi-anglely hammer the heated billet, and the linkage impact rod can transmit the power received by the linkage forging seat to the position of the annular hammering ring, so as to realize the up and down sliding of the annular hammering ring.
[0015] Furthermore, a main forging slot is provided between the center of the upper surface of the forging bearing seat and the through hole. Several impact return springs are fixedly connected to the lower surface of the linkage forging seats. The end of the impact return spring away from the linkage forging seat is fixedly connected to the bottom wall of the limiting slide groove, and the impact return spring and the linkage impact rod at the corresponding position are concentrically arranged.
[0016] Through the above technical solution, after the billet is placed in the main forging slot, the billet can be repeatedly hammered by the forging column to achieve forging. The impact return spring can drive the linkage forging seat and the annular hammering ring to return to their original positions after the linkage forging seat is subjected to impact force.
[0017] Furthermore, the forging structure includes a mold mounting platform located below the top platform. The lower surface of the mold mounting platform has two symmetrically arranged mounting grooves. A forging mounting table is slidably connected to the mounting grooves below the mold mounting platform. Two symmetrically arranged slide rail positioning plates are fixedly connected to the upper surface of the forging mounting table, and the forging mounting table and the mold mounting platform are fixedly connected by the slide rail positioning plates and bolts.
[0018] Through the above technical solution, the mold mounting platform can easily fix the forging structure to the top platform. The forging mounting table and the mold mounting platform are set separately. The mounting groove can fix the forging mounting table in the vertical direction, and the bolt fixing can fix it in the horizontal direction. This allows the forging mounting table to be replaced to adapt to different models of forging columns and to adapt to the forging of different models of stainless steel flanges.
[0019] Furthermore, a forging column is fixedly connected to the center of the lower surface of the forging mounting platform, and an elastic forging plate is slidably connected to the outer wall of the forging column. Two symmetrically arranged linkage elastic grooves are opened on the outer thin wall of the forging column, and a buffer forging spring is fixedly connected between the inner fixed wall of the linkage elastic groove and the upper surface of the elastic forging plate.
[0020] Through the above technical solution, the forging column can forge the heated billet and drill a through hole in the center section of the billet. When the forging column presses down, the elastic forging plate will impact the billet. When the elastic forging plate impacts the linkage forging seat, it is buffered by the buffer forging spring. That is, the power is transmitted without affecting the forging column to further penetrate the forging billet.
[0021] Furthermore, a forging hydraulic cylinder is fixedly connected through the center of the upper surface of the top platform, with the telescopic end of the forging hydraulic cylinder facing downwards and the telescopic end of the forging hydraulic cylinder fixedly connected to the upper surface of the mold mounting platform.
[0022] With the above technical solution, the forging hydraulic cylinder serves as the power source, and the forging column obtains power to forge the billet.
[0023] Furthermore, limit slide rods are fixedly connected through the four corner positions of the lower surface of the top platform, and the bottom of the limit slide rods is fixedly connected to the upper surface of the forging platform.
[0024] Through the above technical solution, the limiting slide rod can provide fixed support for the top platform, which facilitates the fixed installation of the forging hydraulic cylinder and forging structure.
[0025] Furthermore, two symmetrically arranged slide rail mounting slots are provided on the bottom wall of the removal through hole. A transfer slide rail is fixedly connected to the inner wall of each of the two slide rail mounting slots. The two transfer slide rails are fixedly connected to the upper surface of the removal platform. A forging die is slidably connected to the inner wall of the removal through hole. A roller that is tumbledly connected to the transfer slide rail is provided on the lower surface of the forging die. A traction bracket is fixedly connected to the center of the side wall of the forging die.
[0026] Through the above technical solution, the slide rail mounting groove can be used to fix the transfer slide rail. The transfer slide rail, together with the traction bracket and rollers, can be used to move and adjust the forging die. The forging die can then continue to forge the heated billet into shape.
[0027] A forging method using forging equipment for the production and processing of stainless steel flanges includes the following specific steps:
[0028] Step 1. Place the heated billet in the main forging slot, start the forging hydraulic cylinder, so that the forging column forges the heated material, so that the billet is pressed into the main forging slot, and the forging column is continuously forged, so that the billet is pressed into the forging forming die.
[0029] Step 2. When the forging column is forging the billet, the billet deforms and is filled into the forging die. During this process, the elastic forging plate will impact the linkage forging seat, so that the ring hammer ring hammers the billet in the forging die.
[0030] Step 3. Forging until a hole is formed in the center of the blank in the forging die yields a rough flange. The forging die is then pulled out by a winch pulling the traction bracket, and the rough flange can be removed by a robotic arm.
[0031] The beneficial effects of the present invention are as follows: (1) The present invention sets up a linkage impact structure and a forging structure. The forging structure applies forging force, which can continuously forge the heated billet. Under the action of the linkage impact structure, the surface of the billet is continuously and thoroughly forged. When the surface is thoroughly forged, the forging column continuously forges the middle position of the billet, which can forge the center of the billet into a hole, effectively improving the forging efficiency. The whole process is completed inside the forging support seat, which effectively avoids the heat dissipation too quickly and ensures the forging quality. (2) The present invention sets up a forging forming mold and a removal platform at the forging support seat. The billet is deformed by forging and formed in the forging forming mold. A hole can be formed in the center position during forging, which effectively improves the forging efficiency. After forging, the forging forming mold can be pulled out by a winch without manual intervention. Only an empty forging forming mold needs to be put in to continue forging. After the forged product cools down, it can be taken out, which effectively reduces the labor intensity of forging unloading and avoids high temperature burns or scalds to the staff. Attached Figure Description
[0032] Figure 1 This is a first-view structural diagram of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0033] Figure 2 This is a second-view structural diagram of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0034] Figure 3 This is a three-dimensional structural diagram of the linkage forging structure of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0035] Figure 4 This is a three-dimensional structural diagram of the forging die mounting plate of a forging equipment for stainless steel flange production and processing according to the present invention.
[0036] Figure 5 This is an exploded assembly view of the forging bearing seat and the removal platform of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0037] Figure 6 This is a partial sectional view of the forging bearing seat of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0038] Figure 7 This is an exploded view of the forging bearing seat of a forging equipment for the production and processing of stainless steel flanges according to the present invention.
[0039] Figure label:
[0040] 1. Removal platform; 2. Transfer slide rail; 3. Traction bracket; 4. Forging forming mold; 5. Forging bearing seat; 6. Linkage impact structure; 60. Linkage forging seat; 61. Impact return spring; 62. Linkage impact rod; 63. Annular groove; 64. Annular hammer ring; 65. Limiting slide groove; 7. Forging structure; 70. Mold mounting platform; 71. Forging mounting table; 72. Linkage elastic groove; 73. Elastic forging plate; 74. Forging column; 75. Buffer forging spring; 76. Slide rail positioning plate; 77. Mounting slide groove; 8. Main forging slot hole; 9. Top platform; 10. Forging hydraulic cylinder; 11. Limiting slide rod; 12. Forging platform; 13. Removal through hole; 14. Slide rail mounting slot. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0042] like Figures 1-7As shown, a forging equipment for producing stainless steel flanges in this embodiment includes a forging platform 12 and a top platform 9 disposed above the forging platform 12. A forging bearing seat 5 for hammering and shaping is fixedly connected through the middle of the surface of the forging platform 12. A linkage impact structure 6 for multi-directional linkage forging is provided at the position of the forging bearing seat 5. The forging platform 12 supports and installs the top platform 9. The forging structure 7 can be further screwed and fixedly installed through the top platform 9. The forging bearing seat 5 can bear the heated billet and provide a forging field for the billet. The outer side of the forging bearing seat 5 is provided with heat insulation material, which can effectively control the heat dissipation time of the billet and facilitate full forging. The linkage impact structure 6 can forge various positions of the flange.
[0043] A forging hydraulic cylinder 10 is fixedly connected through the center of the upper surface of the top platform 9. The telescopic end of the forging hydraulic cylinder 10 faces downward and is fixedly connected to the upper surface of the mold mounting platform 70. The forging hydraulic cylinder 10 serves as a power source, and the forging column 74 obtains power to forge the billet.
[0044] Limiting slide rods 11 are fixedly connected through the four corners of the lower surface of the top platform 9. The bottom of the limiting slide rods 11 is fixedly connected to the upper surface of the forging platform 12. The limiting slide rods 11 can provide fixed support for the top platform 9, which facilitates the fixed installation of the forging hydraulic cylinder 10 and the forging structure 7.
[0045] Two symmetrically arranged slide rail mounting slots 14 are provided on the inner bottom wall of the through hole 13. The inner walls of the two slide rail mounting slots 14 are fixedly connected to the transfer slide rails 2. The two transfer slide rails 2 are fixedly connected to the upper surface of the removal platform 1. A forging die 4 is slidably connected to the inner wall of the through hole 13. The lower surface of the forging die 4 is provided with rollers that are rolledly connected to the transfer slide rails 2. A traction bracket 3 is fixedly connected to the center of the side wall of the forging die 4. The slide rail mounting slots 14 can realize the fixed installation of the transfer slide rails 2. The forging die 4 can be moved and adjusted by the transfer slide rails 2 in conjunction with the traction bracket 3 and the rollers. The forging die 4 can continue to forge the heated billet.
[0046] The linkage impact structure 6 includes several uniformly distributed circumferentially arranged limiting grooves 65 on the surface of the forging support seat 5. Each of the limiting grooves 65 is slidably connected to a linkage forging seat 60. A through hole 13 is provided at the bottom of one side of the forging support seat 5. An annular groove 63 is provided on the inner wall of the through hole 13 directly below the limiting grooves 65. The limiting grooves 65 allow the linkage forging seat 60 to slide elastically up and down. When the linkage forging seat 60 is impacted by the elastic forging plate 73, it can provide power for the annular hammer ring 64 to impact the blank. The through hole 13 facilitates the forging forming mold 4. The annular groove 63 can accommodate the annular hammer ring 64.
[0047] An annular hammering ring 64 is slidably connected to the inner wall of the annular groove 63. A linkage impact rod 62 is fixedly connected to the center of the lower surface of several linkage forging seats 60. The end of the linkage impact rod 62 away from the linkage forging seat 60 is vertically and slidably connected to the forging bearing seat 5, and the end of the linkage impact rod 62 away from the linkage forging seat 60 is fixedly connected to the upper surface of the annular hammering ring 64. The annular hammering ring 64 can fully hammer the heated billet from multiple angles. The linkage impact rod 62 can transmit the power received by the linkage forging seat 60 to the position of the annular hammering ring 64, so as to realize the up and down sliding of the annular hammering ring 64.
[0048] A main forging slot 8 is provided between the center of the upper surface of the forging bearing seat 5 and the through hole 13. Several linkage forging seats 60 are fixedly connected to the lower surface of the linkage forging seats 60. The end of the impact return spring 61 away from the linkage forging seat 60 is fixedly connected to the bottom wall of the limiting slide groove 65. The impact return spring 61 and the linkage impact rod 62 at the corresponding position are concentrically arranged. After the blank is put into the main forging slot 8, the blank can be repeatedly hammered by the forging column 74 to achieve forging. After the linkage forging seat 60 is subjected to impact force, the impact return spring 61 can drive the linkage forging seat 60 and the annular hammer ring 64 to reset.
[0049] A forging structure 7 is provided above the forging support 5 to apply forging power. The forging structure 7 is powered by the forging hydraulic cylinder 10, so that the forging structure 7 repeatedly forges the billet.
[0050] The forging structure 7 includes a mold mounting platform 70 located below the top platform 9. Two symmetrically arranged mounting grooves 77 are formed on the lower surface of the mold mounting platform 70. A forging mounting table 71 is slidably connected to the mounting grooves 77 below the mold mounting platform 70. Two symmetrically arranged slide rail positioning plates 76 are fixedly connected to the upper surface of the forging mounting table 71. The forging mounting table 71 and the mold mounting platform 70 are fixedly connected by the slide rail positioning plates 76 and bolts. The mold mounting platform 70 facilitates the overall fixed connection of the forging structure 7 to the top platform 9. The forging mounting table 71 and the mold mounting platform 70 are separately configured. The mounting grooves 77 enable vertical fixation of the forging mounting table 71, while the bolts enable horizontal positioning. This allows for the replacement of the forging mounting table 71 to accommodate different models of forging columns 74 and forging of different models of stainless steel flanges.
[0051] A forging column 74 is fixedly connected to the center of the lower surface of the forging mounting table 71. An elastic forging plate 73 is slidably connected to the outer wall of the forging column 74. Two symmetrically arranged linkage elastic grooves 72 are opened on the thin outer wall of the forging column 74. A buffer forging spring 75 is fixedly connected between the inner fixed wall of the linkage elastic groove 72 and the upper surface of the elastic forging plate 73. The forging column 74 can forge the heated billet and drill a through hole in the center section of the billet. When the forging column 74 is pressed down, the elastic forging plate 73 will impact the billet. When the elastic forging plate 73 impacts the linkage forging seat 60, it is buffered by the action of the buffer forging spring 75, which transmits the power without affecting the forging column 74 to further penetrate into the forging billet.
[0052] A removal platform 1 is provided on one side of the forging support 5 to remove the forged parts. The removal platform 1 can remove the flange after forging from the forging support 5 without manual intervention, reducing labor intensity and avoiding burns to workers.
[0053] A forging method using forging equipment for the production and processing of stainless steel flanges includes the following specific steps:
[0054] Step 1. Place the heated billet in the main forging slot 8 and start the forging hydraulic cylinder 10 so that the forging column 74 forges the heated material, so that the billet is pressed into the main forging slot 8 and the forging column 74 is continuously forged, so that the billet is pressed into the forging forming mold 4.
[0055] Step 2. When the forging column 74 forges the billet, the billet deforms and is filled into the forging die 4. During this process, the elastic forging plate 73 impacts the linkage forging seat 60, so that the annular hammering ring 64 hammers the billet in the forging die 4.
[0056] Step 3. Forging until a hole is formed in the middle of the blank in the forging die 4 yields a rough flange. The forging die 4 is then pulled out by a winch pulling the traction bracket 3, and the rough flange can be removed by a robotic arm.
[0057] The working principle of this embodiment is as follows: When the forging hydraulic cylinder 10 provides power, the forging column 74 moves downward to impact the linkage forging seat 60. Under the action of the impact force, the linkage forging seat 60 will be pressed down. Under the action of the linkage impact rod 62, the annular hammer ring 64 forges the surface of the blank that has entered the forging forming mold 4. During forging, due to the action of the buffer forging spring 75, it can not only impact the linkage forging seat 60, but also continue to punch into the main forging slot 8 to forge the blank and punch flange holes on the surface of the blank. Under the thrust of the buffer forging spring 75, the elastic forging plate 73 provides sufficient impact force to the linkage forging seat 60, and resets the elastic forging plate 73 when the forging hydraulic cylinder 10 is pulled up.
[0058] When the forging column 74 is pulled out of the main forging slot 8, the linkage forging seat 60 is reset under the action of the impact reset spring 61.
[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A forging equipment for producing and processing stainless steel flanges, comprising a forging platform (12) and a top platform (9) arranged above the forging platform (12), characterized in that: The forging platform (12) surface middle position is fixedly connected with the hammering shaped forging bearing seat (5) which is penetrated, the forging bearing seat (5) position is provided with the linkage impact structure (6) of multidirectional linkage forging, The forging bearing seat (5) upper position is provided with the forging structure (7) of exerting forging power, The forging bearing seat (5) one side position is provided with the removal platform (1) of removing forging piece, The linkage impact structure (6) includes a plurality of evenly circumferentially distributed limit sliding grooves (65) opened in the surface of the forging bearing seat (5), a plurality of limit sliding grooves (65) are slidably connected with linkage forging seats (60), and a removal through hole (13) is penetrated and opened at the bottom of the forging bearing seat (5) one side, a ring-shaped groove (63) is opened in the inner wall of the removal through hole (13) and located below the limit sliding groove (65), The inner wall of the ring-shaped groove (63) is slidably connected with a ring-shaped hammering ring (64), a linkage impact rod (62) is fixedly connected to the lower surface center of each linkage forging seat (60), the linkage impact rod (62) is vertically and slidably connected to the forging bearing seat (5) away from the linkage forging seat (60), and the linkage impact rod (62) is fixedly connected to the upper surface of the ring-shaped hammering ring (64) away from the linkage forging seat (60). The main forging groove (8) is penetrated and opened between the upper surface center of the forging bearing seat (5) and the removal through hole (13), the lower surface of each linkage forging seat (60) is fixedly connected with an impact return spring (61), the impact return spring (61) is fixedly connected to the inner bottom wall of the limit sliding groove (65) away from the linkage forging seat (60), and the impact return spring (61) and the linkage impact rod (62) at the corresponding position are concentrically arranged; The inner bottom wall of the removal through hole (13) is provided with two symmetrically arranged slide rail mounting grooves (14), the inner walls of the two slide rail mounting grooves (14) are fixedly connected with removal slide rails (2), and the upper surfaces of the two removal slide rails (2) and the removal platform (1) are fixedly connected, the inner wall of the removal through hole (13) is slidably connected with a forging forming die (4), and the lower surface of the forging forming die (4) is provided with a roller rotatably connected with the removal slide rail (2), and the side wall center of the forging forming die (4) is fixedly connected with a traction hanging seat (3).
2. The forging apparatus for producing and processing a stainless steel flange according to claim 1, characterized in that, The forging structure (7) includes a die mounting platform (70) arranged below the top platform (9), two symmetrically arranged mounting sliding grooves (77) are opened in the lower surface of the die mounting platform (70), the die mounting platform (70) is slidably connected with a forging mounting table (71) at the position of the mounting sliding groove (77) below, the upper surface of the forging mounting table (71) is fixedly connected with two symmetrically arranged slide rail positioning plates (76), and the forging mounting table (71) and the die mounting platform (70) are fixedly connected through the slide rail positioning plate (76) and the bolt.
3. The forging apparatus for producing and processing a stainless steel flange according to claim 2, characterized in that, The forging installation platform (71) lower surface center position fixedly connected with a forging column (74), the forging column (74) outer wall position slidingly connected with a elastic forging plate (73), the forging column (74) outer thin wall is provided with two symmetrical linkage elastic grooves (72), the linkage elastic groove (72) inner fixed wall and the elastic forging plate (73) upper surface between fixedly connected with a buffer forging spring (75).
4. The forging apparatus for producing and processing a stainless steel flange according to claim 1, characterized in that, The top platform (9) upper surface center position is fixedly connected with a forging hydraulic cylinder (10) through, the forging hydraulic cylinder (10) telescopic end is downward, the forging hydraulic cylinder (10) telescopic end and the die installation platform (70) upper surface are fixedly connected.
5. The forging apparatus for producing and processing stainless steel flange as claimed in claim 1, wherein: The top platform (9) lower surface four corner positions are fixedly connected with a limiting slide (11) through, the limiting slide (11) bottom and the forging platform (12) upper surface are fixedly connected.
6. The forging method of the forging apparatus for producing and processing a stainless steel flange according to any one of claims 1 to 5, characterized by, Including the following specific steps: Step one. the heated blank is placed in the main forging groove (8) position, start the forging hydraulic cylinder (10), so that the forging column (74) forging heated blank, so that the blank is pressed into the main forging groove (8), and the forging column (74) is continuously forged, so that the blank is pressed into the forging forming die (4); Step two. when the forging column (74) is forging the blank, the blank is deformed and filled in the forging forming die (4), in the process, the elastic forging plate (73) will impact the linkage forging seat (60), so that the annular hammering ring (64) hammers the blank in the forging forming die (4); Step three. the blank in the forging forming die (4) is forged to the middle of the hole, that is, the rough forming flange plate is obtained, the winch is pulled to pull the traction hanging seat (3), so that the forging forming die (4) is pulled out, and the rough forming flange plate can be taken out by the manipulator.
Citation Information
Patent Citations
Flange machining and forging equipment
CN119525421A
Discharging cooling device of forging furnace
CN214185117U