Forging device for duplex stainless steel tube plate forge piece

Abstract

The invention belongs to the technical field of forging devices, and particularly relates to a duplex stainless steel tube plate forging device which comprises a device base. A fixed supporting frame is fixedly installed at the top end of the device base, a telescopic fixing disc is installed on one side of the fixed supporting frame, a first motor is fixedly installed on the other side of the fixed supporting frame, a first lead screw is fixedly installed at one end of the first motor, and a movable fixing frame is installed on the outer wall of the first lead screw in a threaded mode. A hammer forging device is installed on one side of the movable fixing frame, hydraulic hammer forging hammers are evenly installed on the inner wall of the hammer forging device, a first adjusting assembly is arranged on one side of one hydraulic hammer forging hammer, a core anvil is installed between the hydraulic hammer forging hammers, an oil conveying pipe is installed at one end of the core anvil, and an oil tank is installed at one end of the oil conveying pipe. And by arranging the first adjusting assembly, hammer forging of the device on the machined part is more uniform and effective, the product quality is improved, and the risk that the machined part generates air holes and cracks is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of forging devices, and in particular to a forging device for a duplex stainless steel tube sheet forging. Background Art

[0002] Duplex stainless steel tube sheets are a special type of stainless steel material that combines the advantages of ferritic and austenitic microstructures. This material typically contains relatively high proportions of elements such as chromium, nickel, and molybdenum, as well as relatively low proportions of carbon and manganese. Duplex stainless steel is characterized by good strength and toughness at room temperature, and also has excellent corrosion resistance, especially strong resistance to chemical substances such as chlorides and sulfuric acid; When forging duplex stainless steel tube sheets, the radial forging method is often used. Radial forging is a rotary forging method specifically for processing solid or hollow long shaft parts. During the forging process, the hammers distributed in the circumferential direction of the billet strike the workpiece quickly and synchronously. The characteristics of radial forging are that it does not require special molds and can forge precision shaft parts according to a predetermined program. The amount of compression per forging is small, and the number of forging strokes per minute is high, generally 240 - 1800 strokes per minute; Existing radial forging devices are commonly used for forging solid or hollow long shaft parts. For example, a Chinese authorized patent, a seamless steel tube radial forging device and its forging method (application number: CN202111492490.8), discloses a seamless steel tube radial forging device and its forging method, which includes a set up frame. Axial feeding components and a lubrication system are respectively arranged on both sides of the frame; a hammer forging component is arranged on the frame; the hammer forging component includes two symmetrically arranged steering wheels in a circular ring structure. Each steering wheel rotates around its own axis, and a set of hammer head assemblies are arranged inside each steering wheel. Each set of hammer head assemblies includes multiple hammers movably arranged inside the steering wheel, and the multiple hammers are annularly and evenly arranged around the center of the steering wheel; each hammer is matched with a hydraulic cylinder, and the hydraulic cylinder drives the hammer to reciprocate along the radial direction of the steering wheel. When forging a steel tube, through the cooperation of the feeding component, the hammer forging component and the steering wheel, the workpiece is evenly impacted, and lubricating oil is continuously supplemented through the lubrication system, thereby precisely forging high-quality steel tube products; Although the existing devices and technologies can improve the positioning accuracy, thereby improving the radial forging efficiency and dimensional accuracy of seamless steel tubes, during the process of continuously hammering and shaping the workpiece, the cross-sectional radius of the workpiece continuously becomes smaller. At this time, the workpiece and the steering wheel still maintain the same rotation speed, and the impact force of the hammer forging component on the workpiece decreases. The time required for forging may increase, resulting in a decrease in the overall forging speed. At the same time, the forging speed is not fast enough, and problems such as internal pores and cracks are likely to occur in the workpiece before cooling and hardening; Therefore, a forging device for a duplex stainless steel tube sheet forging is proposed for the above problems. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art and solve the problems that during the process of continuously hammering and shaping a workpiece, the cross-sectional radius of the workpiece continuously becomes smaller. At this time, the workpiece and the steering wheel still maintain the same rotational speed, but the impact force of the hammer forging component on the workpiece decreases, and the time required for forging may increase, resulting in a decrease in the overall forging speed. At the same time, the forging speed is not fast enough, and internal pores, cracks and other defects are likely to occur in the workpiece before cooling and hardening, the present invention proposes a forging device for a duplex stainless steel tube sheet forging.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: A forging device for a duplex stainless steel tube sheet forging described in the present invention includes a device base; a fixed support frame is fixedly installed at the top of the device base, a telescopic fixed disk is installed on one side of the fixed support frame, a first motor is fixedly installed on the other side of the fixed support frame, one end of the first motor passes through the fixed support frame and extends to one side of the fixed support frame, a first lead screw is fixedly installed at the end of the first motor extending to one side of the fixed support frame, a moving fixed frame is threadedly installed on the outer wall of the first lead screw, a hammer forging device is installed on the side of the moving fixed frame away from the fixed support frame, the hammer forging device is fixedly installed at the top of the device base, hydraulic hammer forging hammers are evenly installed on the inner wall of the hammer forging device, a first adjustment component for adjusting the rotational speed of the workpiece is arranged on one side of one of the hydraulic hammer forging hammers, a core anvil is installed between the hydraulic hammer forging hammers, an oil delivery pipe is fixedly installed at one end of the core anvil, one end of the oil delivery pipe is fixedly installed with an oil tank, and the oil tank is fixedly installed at the top of the device base; The first adjustment component includes a first adjustment toothed plate arranged on one side of the hydraulic hammer forging hammer, an adjustment gear is meshingly installed on one side of the first adjustment toothed plate, a second adjustment toothed plate is meshingly installed on one side of the adjustment gear, a pressing rod is fixedly installed at one end of the second adjustment toothed plate, a second adjustment component for controlling the lubricating oil application rate is arranged on one side of the pressing rod, a speed change component is arranged at the end of the pressing rod away from the second adjustment toothed plate, a first bevel gear is fixedly installed at the end of the speed change component away from the pressing rod, a second bevel gear is meshingly installed on one side of the first bevel gear, a rotating rod is fixedly installed on one side of the second bevel gear, a first synchronous gear is fixedly installed at the end of the rotating rod away from the second bevel gear, and a second synchronous gear is meshingly installed on one side of the first synchronous gear, and the second synchronous gear is fixedly installed at one end of the telescopic fixed disk.

[0005] Preferably, the speed-changing assembly includes an extrusion disc arranged on one side of the extrusion rod. A first connecting rod is rotatably installed on the side of the extrusion disc away from the extrusion rod in a uniform manner. One end of each first connecting rod is rotatably installed with a second connecting rod. One end of each second connecting rod away from the first connecting rod is rotatably installed with a rotating disc. A second motor is fixedly installed on one side of the rotating disc. A third adjusting assembly for adjusting the initial speed of the workpiece is arranged at the bottom end of the rotating disc. Push blocks are fixedly installed at the intersections of the first connecting rods and the second connecting rods. The push blocks are all slidably installed on the inner walls of the guide rods. The guide rods are all fixedly installed on one side of the rotating disc. First driven wheels are fixedly installed on the circles of the push blocks away from the first connecting rods. The outer walls of the first driven wheels are all sleeved with a convex block belt. The other ends of the convex block belts are all sleeved with second driven wheels.

[0006] Preferably, the second adjusting assembly includes a driving rod arranged on one side of the extrusion rod. A tooth block is fixedly installed at the end of the driving rod away from the extrusion rod. A toothed round rod is meshingly installed on one side of the tooth block. A threaded round rod is fixedly installed at the bottom end of the toothed round rod. The threaded round rod is threadedly installed on the inner wall of the adjusting groove. The adjusting groove is opened on the inner wall of the oil delivery pipe.

[0007] Preferably, the third adjusting assembly includes a sliding strip arranged at the bottom end of the rotating disc. Sliding grooves are installed on both sides of the bottom end of the sliding strip. The sliding grooves are fixedly installed on the top end of the device base. The side of the sliding strip and the sliding grooves are connected by a second spring. A driving strip is abutted against one side of the sliding strip. A positioning plate is fixedly installed at the end of the driving strip away from the sliding strip. An auxiliary rod and a second lead screw are installed on the inner wall of the positioning plate. The second lead screw is rotatably installed on the top end of the device base. The top end of the second lead screw is rotatably installed with a support plate. A third motor is installed on the top end of the support plate. The bottom end of the third motor passes through the support plate and is fixedly connected to the top end of the second lead screw.

[0008] Preferably, an extrusion wheel is abutted against one side of the convex block belt.

[0009] Preferably, a push rod is rotatably installed on one side of the extrusion wheel. One end of the push rod is slidably installed on the inner wall of the fixed rod. The fixed rod is fixedly installed on one side of the device base. The push rod and the fixed rod are connected by a first spring.

[0010] Preferably, discs are fixedly installed on both sides of the first driven wheel and the second driven wheel. The convex block belt is slidably installed between the discs.

[0011] Preferably, the distance between the top end and the bottom end of the toothed round rod is greater than or equal to the distance between the top end and the bottom end of the adjusting groove.

[0012] Preferably, the radius of the cross-section of the adjusting groove is greater than the radius of the cross-section of the inner wall of the oil delivery pipe.

[0013] Preferably, inclined blocks are provided on one side of the sliding bar and one end of the driving bar, and the inclined blocks are mutually attached to each other.

[0014] The beneficial effects of the present invention are as follows: 1. By setting the first adjustment component in the present invention, when the cross-section of the workpiece becomes smaller during the hammer forging process, the hydraulic hammer forging hammer drives the first adjustment toothed plate to move, so that the first adjustment toothed plate changes the rotation speed of the telescopic fixed disk through the adjustment gear, the second adjustment toothed plate, the extrusion rod, the speed change component, the first bevel gear, the second bevel gear, the rotating rod, the first synchronous gear and the second synchronous gear, thereby adjusting the rotation speed of the workpiece, making the rotation speed of the workpiece match the hammer forging speed of the hydraulic hammer forging hammer, avoiding that during the process of continuously hammering and shaping the workpiece, the cross-section radius of the workpiece becomes smaller and smaller. At this time, the workpiece and the steering wheel still maintain the same rotation speed, while the impact force of the hammer forging component on the workpiece decreases, and the time required for forging may increase, resulting in a decrease in the overall forging speed. At the same time, the forging speed is not fast enough, and internal pores, cracks and other defects are likely to occur in the workpiece before cooling and hardening, making the hammer forging of the device on the workpiece more uniform and effective, improving the product quality, and reducing the risk of pores and cracks in the workpiece; 2. By setting the second adjustment component in the present invention, when the first adjustment component adjusts the rotation speed of the workpiece, the extrusion rod drives the driving rod to move, so that the driving rod drives the threaded round rod to move away from the adjustment groove through the tooth block and the toothed round rod, increasing the rate of lubricating oil transported by the oil delivery pipe, avoiding that when the rotation rate of the workpiece increases, the rate of lubricating oil released by the oil tank and the oil delivery pipe remains unchanged, which easily leads to insufficient supply of lubricating oil, causing direct contact between metals, generating scratches, affecting the product quality, and in the forging of stainless steel materials, when the lubricating oil is insufficient, a large amount of heat is easily generated, resulting in a large amount of sparks, causing damage to the staff, products and devices, improving the stability of the device during the hammer forging process, and improving the product quality. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic sectional structure diagram of the first adjustment component of the present invention; Figure 3For the present invention Figure 2 The enlarged view of part A in the present invention; Figure 4 For the present invention Figure 2 The enlarged view of part B in the present invention; Figure 5 The schematic cross-sectional structure diagram of the third adjustment component of the present invention; Figure 6 For the present invention Figure 5 The enlarged view of part C in the present invention; Figure 7 The schematic cross-sectional structure diagram of the speed change component of the present invention; Figure 8 For the present invention Figure 7 The enlarged view of part D in the present invention.

[0017] In the figure: 100, device base; 101, fixed support frame; 102, telescopic fixed disk; 103, first motor; 104, first lead screw; 105, moving fixed frame; 106, hammer forging device; 107, hydraulic hammer forging hammer; 108, core anvil; 109, oil pipeline; 110, oil tank; 200, first adjustment component; 201, first adjustment tooth plate; 202, adjustment gear; 203, second adjustment tooth plate; 204, extrusion rod; 205, speed change component; 206, first bevel gear; 207, second bevel gear; 208, rotating rod; 209, first synchronous gear; 210, second synchronous gear; 211, extrusion disk; 212, first connecting rod; 213, second connecting rod; 214, rotating disk; 215, second motor; 216, pushing block; 217, guide rod; 218, first driven wheel; 219, convex block belt; 220, second driven wheel; 221, extrusion wheel; 222, pushing rod; 223, fixed rod; 224, first spring; 300, second adjustment component; 301, driving rod; 302, tooth block; 303, toothed round rod; 304, threaded round rod; 305, adjustment groove; 400, third adjustment component; 401, sliding bar; 402, sliding groove; 403, second spring; 404, driving bar; 405, positioning plate; 406, auxiliary rod; 407, second lead screw; 408, support plate; 409, third motor. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1 Please refer to Figures 1-8As shown in the figure, a forging device for a duplex stainless steel tube sheet forging includes a device base 100; a fixed support frame 101 is fixedly installed at the top of the device base 100, a telescopic fixed disk 102 is installed on one side of the fixed support frame 101, a first motor 103 is fixedly installed on the other side of the fixed support frame 101, one end of the first motor 103 passes through the fixed support frame 101 and extends to one side of the fixed support frame 101, a first lead screw 104 is fixedly installed at the end of the first motor 103 extending to one side of the fixed support frame 101, a moving fixed frame 105 is threadedly installed on the outer wall of the first lead screw 104, a hammer forging device 106 is installed on the side of the moving fixed frame 105 away from the fixed support frame 101, the hammer forging device 106 is fixedly installed at the top of the device base 100, hydraulic hammer forging hammers 107 are evenly installed on the inner wall of the hammer forging device 106, a first adjustment assembly 200 for adjusting the rotation speed of the workpiece is arranged on one side of one of the hydraulic hammer forging hammers 107, a core anvil 108 is installed between the hydraulic hammer forging hammers 107, an oil delivery pipe 109 is fixedly installed at one end of the core anvil 108, an oil tank 110 is fixedly installed at one end of the oil delivery pipe 109, and the oil tank 110 is fixedly installed at the top of the device base 100; The first adjustment assembly 200 includes a first adjustment toothed plate 201 disposed on one side of the hydraulic hammer forging hammer 107. An adjustment gear 202 is meshingly installed on one side of the first adjustment toothed plate 201. A second adjustment toothed plate 203 is meshingly installed on one side of the adjustment gear 202. A pressing rod 204 is fixedly installed at one end of the second adjustment toothed plate 203. A second adjustment assembly 300 for controlling the lubricating oil application rate is disposed on one side of the pressing rod 204. A speed change assembly 205 is disposed at one end of the pressing rod 204 away from the second adjustment toothed plate 203. A first bevel gear 206 is fixedly installed at one end of the speed change assembly 205 away from the pressing rod 204. A second bevel gear 207 is meshingly installed on one side of the first bevel gear 206. A rotating rod 208 is fixedly installed on one side of the second bevel gear 207. A first synchronous gear 209 is fixedly installed at one end of the rotating rod 208 away from the second bevel gear 207. A second synchronous gear 210 is meshingly installed on one side of the first synchronous gear 209. One side of the second synchronous gear 210 is fixedly installed at one end of the telescopic fixed disk 102; by setting the first adjustment assembly 200, when the cross-section of the workpiece becomes smaller during the forging process by the hammer, the hydraulic hammer forging hammer 107 drives the first adjustment toothed plate 201 to move, so that the first adjustment toothed plate 201 changes the rotation speed of the telescopic fixed disk 102 through the adjustment gear 202, the second adjustment toothed plate 203, the pressing rod 204, the speed change assembly 205, the first bevel gear 206, the second bevel gear 207, the rotating rod 208, the first synchronous gear 209 and the second synchronous gear 210, thereby adjusting the rotation speed of the workpiece, making the rotation speed of the workpiece match the forging speed of the hydraulic hammer forging hammer 107, avoiding the problem that during the continuous hammering and shaping of the workpiece, the cross-section radius of the workpiece becomes smaller and smaller, at this time the workpiece and the steering wheel still maintain the same rotation speed, while the impact force of the forging component on the workpiece decreases, and the time required for forging may increase, resulting in a decrease in the overall forging speed, and at the same time the forging speed is not fast enough, and internal pores, cracks and other defects are likely to occur in the workpiece before cooling and hardening, making the hammer forging of the workpiece by the device more uniform and effective, improving the product quality and reducing the risk of pores and cracks in the workpiece.

[0020] Please refer to Figures 1-3 、 Figures 5-8As shown, the speed-changing assembly 205 includes an extrusion disc 211 arranged on one side of the extrusion rod 204. A first connecting rod 212 is evenly and rotatably installed on the side of the extrusion disc 211 away from the extrusion rod 204. One end of each first connecting rod 212 is rotatably installed with a second connecting rod 213. One end of each second connecting rod 213 away from the first connecting rod 212 is rotatably installed with a rotating disc 214. A second motor 215 is fixedly installed on one side of the rotating disc 214. A third adjusting assembly 400 for adjusting the initial speed of the workpiece is arranged at the bottom of the rotating disc 214. Push blocks 216 are fixedly installed at the intersections of the first connecting rod 212 and the second connecting rod 213. The push blocks 216 are all slidably installed on the inner walls of the guide rods 217. The guide rods 217 are all fixedly installed on one side of the rotating disc 214. A first driven wheel 218 is fixedly installed on the circle of each push block 216 away from the first connecting rod 212. A convex block belt 219 is sleeved on the outer wall of each first driven wheel 218. The other end of each convex block belt 219 is sleeved with a second driven wheel 220; by setting the speed-changing assembly 205, when the first adjusting assembly 200 adjusts the speed of the telescopic fixed disc 102, the extrusion rod 204 drives the extrusion disc 211 to move away from the second adjusting tooth plate 203, so that the extrusion disc 211 drives the first driven wheel 218 to move away from the extrusion disc 211 through the first connecting rod 212, the second connecting rod 213 and the push block 216, thereby increasing the rotation radius of the first driven wheel 218, and then increasing the speed of the second driven wheel 220 through the convex block belt 219, and changing the speed of the telescopic fixed disc 102 through the first bevel gear 206, the second bevel gear 207, the rotating rod 208, the first synchronous gear 209 and the second synchronous gear 210, so that the workpiece can adjust its own speed while the cross-sectional radius is reduced, avoiding the problem that when the cross-sectional radius of the workpiece is reduced, the speed remains unchanged, which easily weakens the forging effect of the hydraulic hammer 107 on the workpiece, resulting in a decline in product quality, improving the forging effect of the hydraulic hammer 107, and thus improving the final quality of the product.

[0021] Embodiment 2 Please refer to Figures 1-2 、 Figure 4As shown, as another implementation mode of the present invention compared with the first comparative example, the second adjustment component 300 includes a driving rod 301 arranged on one side of the extrusion rod 204. A tooth block 302 is fixedly installed at one end of the driving rod 301 away from the extrusion rod 204. A toothed round rod 303 is meshed and installed on one side of the tooth block 302. A threaded round rod 304 is fixedly installed at the bottom end of the toothed round rod 303. The threaded round rod 304 is threadedly installed on the inner wall of the adjustment groove 305, and the adjustment groove 305 is opened on the inner wall of the oil delivery pipe 109; by setting the second adjustment component 300, when the first adjustment component 200 adjusts the rotation speed of the workpiece, the extrusion rod 204 drives the driving rod 301 to move, so that the driving rod 301 drives the threaded round rod 304 to move away from the adjustment groove 305 through the tooth block 302 and the toothed round rod 303, increasing the rate of the oil delivery pipe 109 to deliver lubricating oil, avoiding the problem that when the rotation speed of the workpiece increases, the rate of the oil tank 110 and the oil delivery pipe 109 to release lubricating oil remains unchanged, which easily leads to insufficient supply of lubricating oil, resulting in direct contact between metals, generating scratches, affecting product quality, and in the forging of stainless steel materials, when the lubricating oil is insufficient, a large amount of heat is easily generated, thus generating a large amount of sparks, causing damage to the staff, products and devices, improving the stability of the device during the hammer forging process and improving product quality.

[0022] Please refer to Figures 1-3 、 Figures 5-6As shown in the figure, the third adjustment component 400 includes a sliding bar 401 provided at the bottom end of the rotating disk 214. Sliding grooves 402 are installed on both sides of the bottom end of the sliding bar 401. The sliding grooves 402 are fixedly installed at the top end of the device base 100. A second spring 403 is connected between one side of the sliding bar 401 and the sliding groove 402. One side of the sliding bar 401 abuts against a driving bar 404. A positioning plate 405 is fixedly installed at the end of the driving bar 404 away from the sliding bar 401. An auxiliary rod 406 and a second lead screw 407 are installed on the inner wall of the positioning plate 405. The second lead screw 407 is rotatably installed at the top end of the device base 100. A support plate 408 is rotatably installed at the top end of the second lead screw 407. A third motor 409 is installed at the top end of the support plate 408. The bottom end of the third motor 409 passes through the support plate 408 and is fixedly connected to the top end of the second lead screw 407; by setting the third adjustment component 400, before the workpiece is hammer-forged, the third motor 409 can be started, so that the third motor 409 drives the second lead screw 407 to rotate, and the second lead screw 407 drives the positioning plate 405 to move, so that the positioning plate 405 abuts against the bottom end of the workpiece. At the same time, the positioning plate 405 drives the rotating disk 214 to move through the driving bar 404 and the sliding bar 401, so that the rotating disk 214 drives the first driven wheel 218 to move through the second connecting rod 213, the first connecting rod 212 and the pushing block 216, changing the initial rotation radius of the first driven wheel 218, thereby changing the initial rotation radius of the workpiece through the telescopic fixing disk 102. When the workpiece is large, the rotation speed remains unchanged, resulting in a relatively fast hammer-forging rate of the hydraulic hammer-forging hammer 107 on the workpiece, causing excessive stress concentration inside the workpiece, which is likely to cause cracks or even fractures in the weak areas of the workpiece, and will also lead to uneven heating and deformation of the workpiece during forging, affecting the microstructure and mechanical properties of the final product. The applicability of the device is improved, and the product quality is improved.

[0023] Please refer to Figures 5-8As shown, one side of the bump belt 219 abuts against an extrusion wheel 221. A push rod 222 is rotatably installed on one side of the extrusion wheel 221. One end of the push rod 222 is slidably installed inside the inner wall of a fixed rod 223. The fixed rod 223 is fixedly installed on one side of the device base 100. The push rod 222 and the fixed rod 223 are connected by a first spring 224. When adjusting the rotation radius of the first driven wheel 218, the elastic potential energy can be released through the first spring 224, and the deformation drives the push rod 222 to move towards the direction close to the first spring 224. The push rod 222 drives the extrusion wheel 221 to move, and the extrusion wheel 221 extrudes the bump belt 219, so that the bump belt 219 is kept in a taut state. This avoids the problem that when the rotation radius of the first driven wheel 218 is reduced by the first adjustment assembly 200, the distance between the first driven wheel 218 and the second driven wheel 220 remains unchanged, and the bump belt 219 is prone to looseness, affecting the operation of the first adjustment assembly 200 and even causing the bump belt 219 to fall off, improving the reliability and stability of the device.

[0024] Please refer to Figures 1-3 、 Figures 5-8 As shown, discs are fixedly installed on both sides of the first driven wheel 218 and the second driven wheel 220. The bump belt 219 is slidably installed between the discs. It can limit the bump belt 219, so that the bump belt 219 moves between the discs, avoiding the problem that when adjusting the rotation radius of the first driven wheel 218, the bump belt 219 is prone to fall off from the outer walls of the first driven wheel 218 and the second driven wheel 220, resulting in the device being unable to control the rotation speed of the workpiece, causing uneven stress on the workpiece and affecting the quality of the processed product, improving the reliability and stability of the device.

[0025] Please refer to Figure 2 and Figure 4 As shown, the distance from the top to the bottom of the toothed round rod 303 is greater than or equal to the distance from the top to the bottom of the adjustment groove 305. The radius of the cross-section of the adjustment groove 305 is greater than the radius of the cross-section of the inner wall of the oil delivery pipe 109. It can make the toothed round rod 303 always mesh with the toothed block 302, avoiding the problem that when the length of the toothed round rod 303 is short, the toothed block 302 is prone to move to a position where it cannot mesh with the toothed round rod 303, resulting in the toothed block 302 being unable to drive the toothed round rod 303 to move later, making the oil supply rate of the oil delivery pipe 109 unable to be changed, causing insufficient or excessive lubricating oil supply and wasting resources, improving the blocking effect of the threaded round rod 304 on the lubricating oil, and thus improving the stability and reliability of the second adjustment assembly 300.

[0026] Please refer to Figures 2-3 、 Figures 5-6As shown, one side of the sliding bar 401 and one end of the driving bar 404 are both provided with inclined blocks, and the inclined blocks are in mutual contact; by setting the inclined blocks, when the positioning plate 405 drives the driving bar 404 to move towards the device base 100, the driving bar 404 can decompose a vertical thrust into a horizontal force through the set inclined blocks, thereby pushing the sliding bar 401 to move towards the second spring 403, and then changing the initial rotational speed of the workpiece. This avoids the situation where when the workpiece is relatively large, the rotational speed remains unchanged, resulting in a relatively fast forging rate of the hydraulic hammer 107 on the workpiece, causing excessive stress concentration inside the workpiece, prone to cracks or even fractures in the weak areas of the workpiece, and also leading to uneven heating and deformation of the workpiece during the forging process, affecting the microstructure and mechanical properties of the final product. This improves the applicability of the device and the product quality.

[0027] Working principle: When forging a duplex stainless steel tube sheet forging, place the workpiece inside the forging device 106, make one end of the workpiece pass through the movable fixing frame 105 and abut against one side of the telescopic fixing disc 102, fix one end of the workpiece through the telescopic fixing disc 102, and further fix the workpiece through the movable fixing frame 105. At this time, start the third motor 409, so that the third motor 409 drives the second lead screw 407 to rotate, the second lead screw 407 drives the positioning plate 405 to move, so that the top of the positioning plate 405 abuts against the bottom of the workpiece. At the same time, the positioning plate 405 drives the driving bar 404 to move, the driving bar 404 abuts against the sliding bar 401 and drives the sliding bar 401 to move along the sliding groove 402 through the set inclined blocks, the sliding bar 401 drives the rotating disc 214 to move, the rotating disc 214 drives the second connecting rod 213 to rotate, and one end of the second connecting rod 213 away from the rotating disc 214 drives the first connecting rod 212 to rotate, so that the intersection of the second connecting rod 213 and the first connecting rod 212 drives the pushing block 216 to move, the pushing block 216 drives the first driven wheel 218 to move, changing the rotation radius of the first driven wheel 218. At the same time, the first spring 224 releases elastic potential energy, undergoes elastic deformation and drives the push rod 222 to move, the push rod 222 drives the pressing wheel 221 to move, so that the pressing wheel 221 abuts against one side of the convex block belt 219, making the convex block belt 219 keep tight. The change in the rotation radius of the first driven wheel 218 causes the rotation speed of the second driven wheel 220 to change, so that the second driven wheel 220 changes the rotation speed of the telescopic fixing disc 102 through the first bevel gear 206, the second bevel gear 207, the rotating rod 208, the first synchronous gear 209 and the second synchronous gear 210, and then changes the initial rotation speed of the workpiece; After the workpiece is fixed and adjusted, start the first motor 103, the hydraulic hammer forging hammer 107 and the second motor 215. The first motor 103 drives the first lead screw 104 to rotate, causing the first lead screw 104 to drive the moving fixing bracket 105 to move. At the same time, the second motor 215 drives the rotating disk 214 to rotate, the rotating disk 214 drives the guide rod 217 to rotate, the guide rod 217 drives the pushing block 216 to rotate, the pushing block 216 drives the first driven wheel 218 to rotate, the first driven wheel 218 drives the convex block belt 219 to rotate, the convex block belt 219 drives the second driven wheel 220 to rotate, the second driven wheel 220 drives the first bevel gear 206 to rotate, and the first bevel gear 206 then drives the second bevel gear 207 to rotate. The second bevel gear 207 drives the rotating rod 208 to rotate, and the rotating rod 208 drives the first synchronous gear 209 to rotate. The first synchronous gear 209 drives the second synchronous gear 210 to rotate, the second synchronous gear 210 drives the telescopic fixing disk 102 to rotate, and the telescopic fixing disk 102 drives the workpiece to rotate, so that the hydraulic hammer forging hammer 107 evenly hammers the workpiece; When the cross-section of the workpiece becomes smaller during the forging process, the hydraulic hammer forging hammer 107 drives the first adjusting tooth plate 201 to move towards the forging device 106. The first adjusting tooth plate 201 drives the adjusting gear 202 to rotate, the adjusting gear 202 drives the second adjusting tooth plate 203 to move, the second adjusting tooth plate 203 drives the extrusion rod 204 to move, the extrusion rod 204 drives the extrusion disk 211 to move, and the extrusion disk 211 drives one end of the first connecting rod 212 to rotate. Then, the end of the first connecting rod 212 away from the extrusion disk 211 drives the second connecting rod 213 to rotate. The intersection of the first connecting rod 212 and the second connecting rod 213 drives the pushing block 216 to move away from the first connecting rod 212. The pushing block 216 drives the first driven wheel 218 to move, increasing the rotation radius of the first driven wheel 218. Thus, the first driven wheel 218 increases the rotation speed of the second driven wheel 220 through the convex block belt 219. The second driven wheel 220 then increases the rotation speed of the telescopic fixing disk 102 through the first bevel gear 206, the second bevel gear 207, the rotating rod 208, the first synchronous gear 209 and the second synchronous gear 210, so that the rotation speed of the workpiece is increased, making the hammering of the hydraulic hammer forging hammer 107 more uniform and increasing the forging effect of the hydraulic hammer forging hammer 107.

[0028] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0029] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A forging device for duplex stainless steel tube sheet forgings, characterized in that: The device comprises a device base (100); a fixed support frame (101) is fixedly mounted on the top of the device base (100); a telescopic fixed plate (102) is mounted on one side of the fixed support frame (101); a first motor (103) is fixedly mounted on the other side of the fixed support frame (101); one end of the first motor (103) passes through the fixed support frame (101) and extends to one side of the fixed support frame (101); a first screw rod (104) is fixedly mounted on one end of the first motor (103) extending to one side of the fixed support frame (101); a movable fixed frame (105) is threadedly mounted on the outer wall of the first screw rod (104); and the movable fixed frame (105) A hammer forging device (106) is installed on a side away from the fixed support frame (101), the hammer forging device (106) is fixedly installed on the top of the device base (100), hydraulic hammer forging hammers (107) are evenly installed on the inner wall of the hammer forging device (106), one side of one of the hydraulic hammer forging hammers (107) is provided with a first adjustment component (200) for adjusting the rotation speed of the workpiece, a core anvil (108) is installed between the hydraulic hammer forging hammers (107), one end of the core anvil (108) is fixedly installed with an oil pipeline (109), one end of the oil pipeline (109) is fixedly installed with an oil tank (110), and the oil tank (110) is fixedly installed on the top of the device base (100); The first adjustment assembly (200) comprises a first adjustment tooth plate (201) arranged on one side of the hydraulic hammer forging hammer (107); an adjustment gear (202) is meshedly mounted on one side of the first adjustment tooth plate (201); a second adjustment tooth plate (203) is meshedly mounted on one side of the adjustment gear (202); an extrusion rod (204) is fixedly mounted on one end of the second adjustment tooth plate (203); a second adjustment assembly (300) for controlling the lubricating oil application rate is arranged on one side of the extrusion rod (204); and a speed change assembly (205) is arranged on one end of the extrusion rod (204) away from the second adjustment tooth plate (203). A first bevel gear (206) is fixedly mounted on one end of the speed change assembly (205) away from the extrusion rod (204); a second bevel gear (207) is meshedly mounted on one side of the first bevel gear (206); a rotating rod (208) is fixedly mounted on one side of the second bevel gear (207); a first synchronous gear (209) is fixedly mounted on one end of the rotating rod (208) away from the second bevel gear (207); a second synchronous gear (210) is meshedly mounted on one side of the first synchronous gear (209); and one side of the second synchronous gear (210) is fixedly mounted on one end of the telescopic fixed plate (102).

2. The forging device for a duplex stainless steel tube sheet forging according to claim 1, characterized in that: The speed change assembly (205) comprises an extrusion plate (211) arranged on one side of the extrusion rod (204); a first connecting rod (212) is evenly rotatably mounted on a side of the extrusion plate (211) away from the extrusion rod (204); a second connecting rod (213) is rotatably mounted on one end of the first connecting rod (212); a rotating plate (214) is rotatably mounted on the end of the second connecting rod (213) away from the first connecting rod (212); a second motor (215) is fixedly mounted on one side of the rotating plate (214); and a first motor (215) for adjusting the initial rotation speed of the workpiece is arranged at the bottom end of the rotating plate (214). Three adjustment components (400), a pushing block (216) is fixedly installed at the intersection of the first connecting rod (212) and the second connecting rod (213), the pushing blocks (216) are slidably installed on the inner wall of the guide rod (217), the guide rod (217) is fixedly installed on one side of the rotating disk (214), the circle of the pushing block (216) away from the first connecting rod (212) is fixedly installed with a first driven wheel (218), the outer wall of the first driven wheel (218) is sleeved with a convex block belt (219), and the other end of the convex block belt (219) is sleeved with a second driven wheel (220).

3. The forging device for a duplex stainless steel tube sheet forging according to claim 1, characterized in that: The second adjustment component (300) comprises a driving rod (301) arranged on one side of the extrusion rod (204); a tooth block (302) is fixedly mounted on one end of the driving rod (301) away from the extrusion rod (204); a toothed round rod (303) is meshingly mounted on one side of the toothed round rod (302); a threaded round rod (304) is fixedly mounted on the bottom end of the toothed round rod (303); the threaded round rod (304) is threadedly mounted on the inner wall of an adjustment groove (305); and the adjustment groove (305) is opened on the inner wall of the oil pipeline (109).

4. The forging device for a duplex stainless steel tube sheet forging according to claim 2, characterized in that: The third adjustment component (400) comprises a sliding bar (401) arranged at the bottom end of the rotating disk (214), sliding grooves (402) are installed on both sides of the bottom end of the sliding bar (401), and the sliding groove (402) is fixedly installed on the top end of the device base (100), one side of the sliding bar (401) is connected to the sliding groove (402) via a second spring (403), and one side of the sliding bar (401) is abutted against a driving bar (404), and the driving bar (404) is away from the sliding bar (401). A positioning plate (405) is fixedly mounted at one end, an auxiliary rod (406) and a second screw rod (407) are mounted on the inner wall of the positioning plate (405), the second screw rod (407) is rotatably mounted on the top end of the device base (100), a support plate (408) is rotatably mounted on the top end of the second screw rod (407), a third motor (409) is mounted on the top end of the support plate (408), and the bottom end of the third motor (409) passes through the support plate (408) and is fixedly connected to the top end of the second screw rod (407).

5. The forging device for a duplex stainless steel tube sheet forging according to claim 2, characterized in that: One side of the convex block belt (219) is in contact with an extrusion wheel (221).

6. The forging device for a duplex stainless steel tube sheet forging according to claim 5, characterized in that: A push rod (222) is rotatably mounted on one side of the extrusion wheel (221), one end of the push rod (222) is slidably mounted on the inner wall of a fixed rod (223), the fixed rod (223) is fixedly mounted on one side of the device base (100), and the push rod (222) and the fixed rod (223) are connected via a first spring (224).

7. The forging device for a duplex stainless steel tube sheet forging according to claim 2, characterized in that: Discs are fixedly mounted on both sides of the first driven wheel (218) and the second driven wheel (220), and the convex block belt (219) is slidably mounted between the discs.

8. The forging device for duplex stainless steel tube sheet forging according to claim 3, characterized in that: The distance between the top end and the bottom end of the toothed round rod (303) is greater than or equal to the distance between the top end and the bottom end of the adjustment slot (305).

9. The forging device for duplex stainless steel tube sheet forging according to claim 3, characterized in that: The radius of the cross section of the regulating groove (305) is greater than the radius of the cross section of the inner wall of the oil delivery pipe (109).

10. The forging device for duplex stainless steel tube sheet forging according to claim 4, characterized in that: One side of the sliding bar (401) and one end of the driving bar (404) are both provided with tilting blocks, and the tilting blocks are fitted together.

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