One-step forming device and method for hyperbolic transition ring plate of large-thickness high-strength steel

Abstract

The application provides a one-time forming method and device for a large-thickness high-strength steel double-curved transition ring plate in the field of ships. The one-time forming device for the large-thickness high-strength steel double-curved transition ring plate comprises an upper die and a lower die; the upper die is arranged on an oil press, and the lower die is arranged on a working platform; during working, the upper die is driven to move up and down by the oil press, and a part placed on the lower die is pressed and expanded to form. The rebound data in two curvature directions are effectively arranged, so that the rebound data design of the die can effectively refer to the plate theory and the experience rebound database, and the processing rebound amount is effectively offset; meanwhile, the die arrangement that the edge of the lower die is slightly larger than the edge of the upper die is combined with the method that the middle part is pressed first and then the two sides, so that the double-curved transition ring part is not prone to torsional deviation along the circumferential direction; the linear vertical plate welding combined die set form reduces the manufacturing period and cost of the die set. The application is suitable for being applied as a one-time forming device and method for a large-thickness high-strength steel double-curved transition ring plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the ship structure construction in the field of ship, and particularly relates to a one-time forming device and method for a large-thickness high-strength steel double-curved transition ring plate. BACKGROUND

[0002] At present, in the processing and construction of the double-curved transition ring plate of the ship outer plate, four methods can be adopted, including water fire bending, single-point pressure forming, multi-point numerical control bending and forming die pressing processing. The four methods have different degrees of application according to the characteristics of the outer plate.

[0003] Firstly, the water fire bending belongs to the thermal elastic-plastic deformation problem. The water fire bending processing method relies on local flame heating and water cooling. When heating in line, the plate is compressed and deformed due to thermal expansion of the heating area. After the heating area is cooled, the plate is contracted. The plate is bent by relying on the contraction deformation of the plate to achieve the purpose of forming a three-dimensional curved plate. The temperature is not easy to control during heating operation, and overheating will cause changes in material properties and complex internal stress. The deformation caused by the release of internal stress of the processed steel plate under the condition of heat assembly and welding is difficult to control, which is the fundamental reason for the uneven line of the product. For large-thickness high-strength steel, water fire bending is also extremely easy to cause changes in the mechanical properties of the plate, especially for quenched and tempered steel. It is also extremely difficult to restore the mechanical properties after forming by using dipping fire and tempering heat treatment, and it is not suitable for the processing of large-thickness high-strength steel double-curved plate.

[0004] Secondly, the single-point pressure forming method is only suitable for small-sized parts, and its operation completely relies on experience, which is easy to produce indentation and large linear deviation, and has poor quality stability.

[0005] Thirdly, the multi-point numerical control bending method. Many multi-point forming (also known as flexible forming) devices have been successfully developed in China. At present, the domestic numerical control cold bending technology is in the leading position, mainly including Jilin University and Wuhan University of Technology. The developed devices applied to the shipbuilding industry mainly include: the multi-point forming machine (mold size: 3500*2700) developed by Jilin University and China First Heavy Industries Co., Ltd. as Dalian Rudder Shaft Co., Ltd., the SKWB2500 type developed by Wuhan University of Technology and Shandong Suoli Machinery Co., Ltd. for Shanghai Jiangnan Shipyard and the SKWB2000 type developed for Wuchang Ship (assembled, being debugged) numerical control bending machine, and the flexible forming technology is becoming mature. The above-mentioned devices are mainly aimed at the processing of the double-curved surface of the civilian medium-thickness plate, and there is basically no application case of the complex curved surface forming of the large-thickness high-strength double-curved plate in product construction.

[0006] Finally, the forming die processing pressing method is widely used in single curved plate pressing forming processing, and also has application in double curved plate processing, the die mainly adopts cast forgings machining forming curved surface, in view of the high strength steel with large thickness, the strength and the hardness of the cast forging die are required to be higher, the feasible scheme is to use high-strength tool steel forgings to make the pressing die, and the surface is dipped after forming, so that the surface hardness is improved, especially for the high-strength steel with large thickness and small batch, the manufacturing cost is higher, and the time is longer.

[0007] Based on the above, the present application is directed to the processing of the double curved transition ring plate of the high-strength steel with large thickness, which has high strength and large thickness, and there are many specifications, it is difficult to form once, and the quality and cost control of the existing processing method is difficult, a once forming device and method for the double curved transition ring plate of the high-strength steel with large thickness are provided, the processing quality is improved, and the construction cost is saved. SUMMARY

[0008] In order to solve the technical problems of low efficiency and low precision in processing the double curved plate of the high-strength steel with large thickness, the present application provides a once forming device and method for the double curved transition ring plate of the high-strength steel with large thickness. The method uses a once forming device, reduces the construction difficulty, reduces the processing cost, and solves the technical problems of the double curved plate of the high-strength steel with large thickness.

[0009] The technical scheme adopted by the present application to solve the technical problems is:

[0010] A once forming device for the double curved transition ring plate of the high-strength steel with large thickness comprises an upper die and a lower die; the upper die is arranged on an oil press, and the lower die is arranged on a working platform; during working, the upper die is driven to move up and down by the oil press, and the parts placed on the lower die are pressed and formed.

[0011] The upper die comprises an upper die pressing die bottom plate, an upper die bearing vertical plate, an upper die transition vertical plate, an upper die surrounding plate, an upper die reinforcing lug, an upper die pressing die length center line and an upper die pressing die width center line, the upper die bearing vertical plate and the upper die transition vertical plate are arranged at intervals at the lower part of the upper die pressing die bottom plate, the linear vertical plate is welded and combined into a die set form, the upper die bearing vertical plate and the upper die transition vertical plate form the upper die working surface of the pressing die through machining, the upper die surrounding plate is arranged at the side of the upper die working surface, the upper die reinforcing lug is arranged at both ends of the upper die, the upper die pressing die length center line is arranged at the center of the upper die working surface, and the upper die pressing die width center line is arranged at both ends of the upper die working surface, which serves as a position adjustment reference for part processing.

[0012] The lower tire comprises a lower tire bottom plate, a lower tire load-bearing vertical plate, a lower tire transition vertical plate, a lower tire surrounding plate, a lower tire reinforcing lug, a lower tire pressing length center line and a lower tire pressing width center line, the lower tire load-bearing vertical plate and the lower tire transition vertical plate are arranged at intervals on the upper portion of the lower tire bottom plate, the linear vertical plate is welded to form a tire pressing assembly, the lower tire load-bearing vertical plate and the lower tire transition vertical plate form a lower tire working surface through machining, the lower tire surrounding plate is arranged on the side of the lower tire working surface, the lower tire reinforcing lug is arranged at both ends of the lower tire, the lower tire pressing length center line is arranged at the center of the lower tire working surface, and the lower tire pressing width center line is arranged at both ends of the lower tire working surface, which serves as a position adjustment reference for part machining.

[0013] In order to further solve the technical problems to be solved by the present application, the present application further provides a one-step forming method for a double-curved transition ring plate of a large-thickness high-strength steel, which is implemented according to the following steps:

[0014] (1) Double-curved springback amount arrangement: springback amounts are arranged in both the circumferential and radial directions of the part, and the springback amount in each curvature direction is arranged to be 3-6 mm within every 300 mm range; specifically, first, the radial springback amount of the curvature with a larger curvature is arranged; then, the pressing surface is obtained by rotating along the circumferential direction, at this time, the circumferential rotation radius is smaller than the actual part processing radius, the radius is calculated according to the circumferential springback, and the pressing processing surface is obtained by rotating by a certain angle;

[0015] (2) Determining the pressing size range based on the edge of the double-curved transition ring plate: when the part to be processed is sleeved, a margin of more than 2 times the plate thickness is arranged on the periphery, the upper tire and the lower tire width size are arranged according to the sleeving size, the upper tire covers the entire part range after processing, and contains the margin area, the lower tire is at least 50 mm larger than the upper tire periphery, that is, the pressing width edge; the angle of axial rotation mainly satisfies that the lower tire length is not less than 1 / 2 of the length of the pressing direction of the part to be processed;

[0016] (3) Horizontal control before part processing: the part to be processed is placed on the lower tire in a flat state, the four corners of the lower tire are ensured to be horizontal, the pressing processing surface is connected to establish a plane through the model, the pressing height is stretched by the normal line of the plane to form a pressing entity, at this time, the pressing processing direction is perpendicular to the plane, and the unfolded plate is ensured to be placed horizontally on the lower tire before processing and to be uniformly stressed during processing;

[0017] (4) Pressing center line: after the upper tire and the lower tire are completed, the pressing center line is measured and corrected, and the center lines in the width direction and the length direction are marked on the pressing;

[0018] (5) After the part to be processed is sleeved, the part double-curved direction processing center line and the preliminary margin line are drawn, the pressing direction is not less than 3 processing center lines, and the width direction is 1 processing center line;

[0019] (6) Fixing the tire: the upper tire and the lower tire are installed on the oil press, the upper tire is fixed by bolts, and the lower tire is placed on the platform of the oil press;

[0020] (7) Alignment adjustment before pressing: the part to be processed is hoisted onto the lower tire, and the processing center line is aligned with the tire center line;

[0021] (8) Middle part forming and pressing: first, the middle part of the part is pressed in the circumferential direction, that is, the tire center line is aligned with the middle part center line, and the first pressing is performed without compaction. After pressing to the remaining 1 / 3 springback amount, press for 2 minutes, then lift the upper tire; then, after standing for 2 minutes, measure the pressed part line using an aluminum sample box. If the line does not meet the requirements, perform the second pressing using the same method as above;

[0022] (9) Two-side forming and pressing: adjust the part so that the side center line is aligned with the tire center line, and use the method of step (8) to press. After the sample box inspection is qualified, the other side is pressed;

[0023] (10) After the overall pressing is completed, measure it using the overall sample box. After passing the inspection, draw the net material line of the part, then draw the center line of the part through the net material line, and go to the next step to remove the excess amount and open the bevel.

[0024] Positive effects:

[0025] 1. The forming quality of the high-strength steel double-curved transition ring is realized. Through effective springback amount arrangement in two curvature directions, the tire springback data design can effectively refer to the theoretical and experienced springback database of the plate, effectively offsetting the processing springback amount. At the same time, through the tire arrangement that the lower tire edge is slightly larger than the upper tire edge, combined with the method of pressing the middle part first and then the two sides, the double-curved transition ring part is not prone to torsional deviation along the circumferential direction. The above method greatly improves the forming quality and efficiency;

[0026] 2. The linear vertical plate welding combined tire form makes the manufacturing cycle and cost of the tire reduced, and the high-strength steel can be selectively used, avoiding the problem that the strength and hardness of traditional cast and forged tire are not suitable for high-strength steel processing. The tire is easy to make and has strong popularization.

[0027] 3. The linear type of the tire vertical plate can be controlled in precision through numerical control blanking. After the tire structure is completed, the working surface requires less machining, and the surface can be directly used without heat treatment.

[0028] In summary, it is suitable to be applied as a one-time forming device and method for a large-thickness high-strength steel double-curved transition ring plate. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic diagram of a large-thickness high-strength steel double-curved transition ring plate one-time forming device;

[0030] Figure 2 Schematic diagram of a thick high-strength steel hyperbolic transition ring plate;

[0031] Figure 3 Schematic diagram for arranging tire range and rebound amount;

[0032] Figure 4 Schematic diagram for the layout of the lower tire range and rebound amount;

[0033] Figure 5 The figure is a schematic diagram of a one-step forming method for a thick high-strength steel hyperbolic transition ring plate.

[0034] In the figure, 10. upper tire, 11. upper tire pressure bottom plate, 12. upper tire load-bearing vertical plate, 13. upper tire transition vertical plate, 14. upper tire enclosure plate, 15. upper tire reinforcement lug, 16. upper tire pressure tire length centerline, 17. upper tire pressure tire width centerline;

[0035] 20. Lower tire, 21. Lower tire pressure base plate, 22. Lower tire load-bearing vertical plate, 23. Lower tire transition vertical plate, 24. Lower tire enclosure plate, 25. Lower tire reinforcement lug, 26. Lower tire pressure length centerline, 27. Lower tire pressure length centerline.

[0036] For the convenience of description, the thick high-strength steel hyperbolic transition ring plate is referred to as a part. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] As shown in the figure, a one-time forming device for a thick high-strength steel hyperbolic transition ring plate includes an upper tire 10 and a lower tire 20; the upper tire 10 is set on a hydraulic press, and the lower tire 20 is set on a working platform; when working, the upper tire 10 is driven up and down by the hydraulic press to press the parts placed on the lower tire 20 to expand and form.

[0039] In order to ensure the stability of the structure of the application, the upper tire 10 comprises an upper tire pressing bottom plate 11, an upper tire load-bearing vertical plate 12, an upper tire transition vertical plate 13, an upper tire surrounding plate 14, an upper tire reinforcing lug 15, an upper tire pressing length center line 16 and an upper tire pressing width center line 17, the upper tire load-bearing vertical plate 12 and the upper tire transition vertical plate 13 are arranged at intervals at the lower part of the upper tire pressing bottom plate 11, the linear vertical plate is welded and combined into a tire mold, the upper tire working surface of the upper tire load-bearing vertical plate 12 and the upper tire transition vertical plate 13 is formed by machining, the upper tire surrounding plate 14 is arranged at the side of the upper tire working surface, the upper tire reinforcing lug 15 is arranged at both ends of the upper tire 10, the upper tire pressing length center line 16 is arranged at the center of the upper tire working surface, and the upper tire pressing width center line 17 is arranged at both ends of the upper tire working surface, which is used as a position adjustment reference for machining of parts.

[0040] In order to ensure the stability of the structure of the application, the upper tire pressing bottom plate 11 is connected with an oil press or a transition tire, bolt connection holes are arranged on the upper tire pressing bottom plate 11 according to the position of the connecting groove, and the contact surface of the upper tire pressing bottom plate 11 is machined after the overall welding of the upper tire 10, with a flatness of ≤1mm.

[0041] The upper tire load-bearing vertical plate 12 is arranged on the upper tire pressing bottom plate 11, and the number of the upper tire load-bearing vertical plate 12 is determined according to the required load strength.

[0042] The upper tire transition vertical plate 13 is arranged between the upper tire load-bearing vertical plates 12, the upper tire transition vertical plate 13 is intermittently welded with the edges of the upper tire load-bearing vertical plates 12, the linear working surface side is beveled and continuously full-welded, and the plug welding holes are arranged between the upper tire load-bearing vertical plates 12 and the upper tire transition vertical plate 13 according to the thickness of the parts for welding.

[0043] The upper tire surrounding plate 14 is arranged adjacent to the upper tire working surface, the upper tire surrounding plate 14 is machined according to the linear side of the upper tire load-bearing vertical plate 12 and the upper tire transition vertical plate 13, and is welded to the sides of the upper tire load-bearing vertical plate 12 and the upper tire transition vertical plate 13, so as to further reinforce the stability of the upper tire load-bearing vertical plate 12 and the upper tire transition vertical plate 13.

[0044] The upper tire reinforcing lug 15 is welded between the upper tire pressing bottom plate 11 and the upper tire load-bearing vertical plate 12, so as to further reinforce the overall stability of the upper tire 10 and the installation and hoisting of the upper tire 10.

[0045] Preferably, the ends of the upper tire working surface are the upper tire load-bearing vertical plates 12, which are convenient for assembly and have good structural stability.

[0046] In order to further ensure the stability of the structure of the present application, the lower tire 20 comprises a lower tire pressing bottom plate 21, a lower tire load-bearing vertical plate 22, a lower tire transition vertical plate 23, a lower tire surrounding plate 24, a lower tire reinforcing lug 25, a lower tire pressing length center line 26 and a lower tire pressing width center line 27, the lower tire load-bearing vertical plate 22 and the lower tire transition vertical plate 23 are arranged at intervals on the upper part of the lower tire pressing bottom plate 21, the linear vertical plate is welded to form a tire pressing assembly, the lower tire working surface is formed by machining the lower tire load-bearing vertical plate 22 and the lower tire transition vertical plate 23, the lower tire surrounding plate 24 is arranged on the side of the lower tire working surface, the lower tire reinforcing lug 25 is arranged at both ends of the lower tire 20, the lower tire pressing length center line 26 is arranged at the center of the lower tire working surface, and the lower tire pressing width center line 27 is arranged at both ends of the lower tire working surface, which is used as a position adjustment reference for part machining.

[0047] In order to optimize the structure of the present application, the lower tire pressing bottom plate 21 is placed on the corresponding working platform and fixed, the contact surface of the lower tire pressing bottom plate 21 is machined after the lower tire 20 is integrally welded, and the flatness is ≤1mm;

[0048] The lower tire load-bearing vertical plate 22 is arranged on the lower tire pressing bottom plate 21, and the number of the lower tire load-bearing vertical plate 22 is determined according to the required bearing strength.

[0049] The lower tire transition vertical plate 23 is arranged between the lower tire load-bearing vertical plates 22, the lower tire transition vertical plate 23 is intermittently welded with the edges of the lower tire load-bearing vertical plates 22, the linear working surface side is opened with a bevel and continuously full-welded, and the lower tire load-bearing vertical plates 22 and the lower tire transition vertical plates 23 are welded according to the thickness of the parts.

[0050] The lower tire surrounding plate 24 is arranged adjacent to the lower tire working surface, the lower tire surrounding plate 24 is linearly machined according to the side of the lower tire load-bearing vertical plate 22 and the lower tire transition vertical plate 23, and is welded to the sides of the lower tire load-bearing vertical plate 22 and the lower tire transition vertical plate 23, so as to further reinforce the stability of the lower tire load-bearing vertical plate 22 and the lower tire transition vertical plate 23.

[0051] The lower tire reinforcing lug 25 is welded between the lower tire pressing bottom plate 21 and the lower tire load-bearing vertical plate 22, so as to further reinforce the overall stability of the lower tire 20 and the installation and hoisting of the lower tire 20.

[0052] Preferably, the ends of the lower tire working surface are the lower tire load-bearing vertical plates 22, which are convenient for assembly and have good structural stability.

[0053] Embodiment: Taking machining of a part with high-strength steel double-curved plate thickness t70mm, length L970mm, large port circumferential radius R1 4500mm, small port circumferential radius R24000mm, and circumferential arc length about 3600mm as an example, the specific steps are as follows:

[0054] (1) Hyperbolic springback arrangement: In both hyperbolic directions, springback is arranged, and the springback in each curvature direction is arranged 3-6 mm per 300 mm range;

[0055] Upper tire 10: tire radial chord length 1370 mm, springback a positioning 24 mm, upper tire length positioning 1700 mm, circumferential springback 26 mm, tire circumferential radius r1 calculated 3400 mm;

[0056] Lower tire 20: tire radial chord length 1520 mm, springback b positioning 22 mm, lower tire length 2100 mm, circumferential springback 36 mm, tire circumferential radius r2 calculated 3550 mm;

[0057] (2) Determine the tire size range based on the edge of the hyperbolic transition ring plate: arrange 140 mm excess margin around the part when sleeving, set the upper and lower tire width size according to the sleeving size, lofting to get the upper tire width 1370 mm, and the lower tire width 1470 mm; The angle of circumferential rotation is 1700 mm for the upper tire and 2100 mm for the lower tire, which are fixed value ranges;

[0058] (3) Take the four corners of the tire surface obtained by rotation as the plane, and stretch 800 mm tire height along the normal line of the plane to form a tire entity. At this time, the tire processing direction is perpendicular to the plane, and a 35 mm thick high-strength steel plate is used to make the tire. Each tire stand is cut out along the length direction one by one with a 35 mm spacing perpendicular to the plane;

[0059] (4) After the upper tire 10 and the lower tire 20 are completed, measure and correct the tire center line, and mark the center line in the width direction and the length direction in the tire;

[0060] (5) After the blank is machined, draw the machining center line and the preliminary excess margin line of the part in the hyperbolic direction, and arrange 3 machining center lines in the length direction and 1 machining center line in the width direction;

[0061] (6) Tire fixing: install the upper tire 10 and the lower tire 20 on the oil press, and fix the upper tire 10 with bolts, and place the lower tire 20 on the oil press platform;

[0062] (7) Pre-pressing alignment adjustment: hoist the part to be machined onto the lower tire 20, and align the machining center line with the tire center line;

[0063] (8) Middle forming pressing: first, press the middle part of the part in the circumferential direction, that is, align the tire center line with the middle center line, press for the first time, without compaction, press to 1 / 3 of the remaining springback, and press for 2 minutes, then lift the upper tire 10; Then, after standing for 2 minutes, measure the line type of the pressed part using an aluminum sample box. If the line type does not meet the requirements, perform the second pressing, and the pressing method is the same as above.

[0064] (9) two sides forming pressing: adjust the part, make its side center line align with the pressing center line, adopt the method of step (8) to press, after the sample box inspection is qualified, press the other side;

[0065] (10) after the whole pressing is completed, adopt the whole sample box to measure, the linear deviation is ≤4mm, draw the net material line of the part, then draw the part center line through the net material line, go to the next step to remove the excess and open the bevel process.

[0066] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A one-step forming method for a thick, high-strength steel hyperbolic transition ring plate, characterized by: A one-step forming device for a thick, high-strength steel hyperbolic transition ring plate is used, the one-step forming device comprising an upper tire (10) and a lower tire (20); The upper tire (10) is arranged on the hydraulic press, and the lower tire (20) is arranged on the working platform; when working, the upper tire (10) is driven by the hydraulic press to move up and down, and the parts placed on the lower tire (20) are pressed to expand and form; The one-step molding method comprises the following steps: 1) Hyperbolic rebound arrangement: Springback is set in both the circumferential and radial directions of the part. The springback in each curvature direction is set at 3 to 6 mm per 300 mm. Specifically, first, the radial springback amount of the larger curvature is set; Then, the tread surface is obtained by rotating along the circumferential direction. At this time, the circumferential rotation radius is smaller than the actual rotation radius of the processed part. This radius is calculated based on the circumferential rebound. The tread processing surface is obtained by rotating a certain angle. 2) Determine the tire size range based on the edge of the hyperbolic transition ring plate: When the parts to be processed are nested, a margin of more than 2 times the plate thickness is arranged around them. The width of the upper tire (10) and the lower tire (20) are set according to the nesting size. The upper tire (10) covers the entire range of the parts after processing, including the margin area. The lower tire (20) is at least 50 mm larger than the periphery of the upper tire (10), that is, the tire width edge; the angle of axial rotation mainly satisfies the requirement that the length of the lower tire shall not be less than 1 / 2 of the length of the part to be processed in the pressing direction; 3) Horizontal control before parts processing: The part to be processed is placed in a flat state on the lower tire (20), ensuring that the four corners of the lower tire (20) are level. The tire pressing processing surface is connected to the four corners of the curved surface through the model to establish a plane, and the normal line of this plane is stretched to form a tire pressing height. At this time, the tire pressing processing direction is perpendicular to this plane, ensuring that the unfolded plate before processing is placed horizontally on the lower tire (20) and the force is evenly applied during the processing; 4) Tire centerline: After the upper tire (10) and the lower tire (20) are manufactured, the center line of the tire is measured and corrected, and the center lines in the width direction and the length direction are marked in the tire; 5) After processing and blanking, mark the machining center line and preliminary allowance line in the hyperbolic direction of the part, with no less than 3 machining center lines in the pressing direction and 1 machining center line in the width direction; 6) Tire fixation: Install the upper tire (10) and the lower tire (20) on the hydraulic press, fix the upper tire (10) with bolts, and place the lower tire (20) on the hydraulic press platform; 7) Position adjustment before pressing: The parts to be processed are hoisted onto the lower tire (20), and the processing center line is aligned with the tire pressing center line; 8) Middle forming and pressing: First, press the middle part of the circumference of the part, that is, align the tire centerline with the middle centerline. For the first press, no compaction is required. Press until 1 / 3 of the rebound volume remains, hold the pressure for 2 minutes, and then lift the tire (10). Then, after standing for 2 minutes, use an aluminum sample box to measure the linear shape of the pressed part. If the linear shape does not meet the requirements, perform a second pressing, and the pressing method is the same as above; 9) Forming and pressing on both sides: Adjust the part so that its side centerline is aligned with the tire centerline, and press it using the method in step 8). After the sample box passes the inspection, press the other side; 10) After the overall pressing is completed, the overall sample box is used for measurement. If it is qualified, the net material line of the part is drawn first, and then the center line of the part is drawn through the net material line, and then the next step is to remove the allowance and open the groove process.

2. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 1 is characterized by: The upper tire (10) comprises an upper tire pressure bottom plate (11), an upper tire load-bearing vertical plate (12), an upper tire transition vertical plate (13), an upper tire circumference plate (14), an upper tire reinforcement lug (15), an upper tire pressure length center line (16), and an upper tire pressure width center line (17); The upper tire load-bearing vertical plates (12) and the upper tire transition vertical plates (13) are arranged at intervals at the lower part of the upper tire pressure base plate (11), and the linear vertical plates are welded to form a tire mold. The upper tire load-bearing vertical plates (12) and the upper tire transition vertical plates (13) are machined to form an upper tire working surface for pressure tires. An upper tire circumference plate (14) is provided on the side of the upper tire working surface. Upper tire reinforcement lugs (15) are provided at both ends of the upper tire (10). An upper tire pressure length center line (16) is provided at the center of the upper tire working surface, and upper tire pressure width center lines (17) are provided at both ends of the upper tire working surface as a position adjustment reference for parts processing.

3. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 1 is characterized by: The lower tire (20) comprises a lower tire pressure bottom plate (21), a lower tire load-bearing vertical plate (22), a lower tire transition vertical plate (23), a lower tire enclosure plate (24), a lower tire reinforcement lug (25), a lower tire pressure tire length centerline (26), and a lower tire pressure tire width centerline (27); A lower tire load-bearing vertical plate (22) and a lower tire transition vertical plate (23) are arranged at intervals on the upper part of the lower tire pressure bottom plate (21). The linear vertical plates are welded to form a tire mold. The lower tire load-bearing vertical plate (22) and the lower tire transition vertical plate (23) are machined to form a lower tire working surface for pressure pressing. A lower tire circumference plate (24) is provided on the side of the lower tire working surface. Lower tire reinforcement lugs (25) are provided at both ends of the lower tire (20). A lower tire pressure length center line (26) is provided at the center of the lower tire working surface. Lower tire pressure width center lines (27) are provided at both ends of the lower tire working surface as a position adjustment reference for parts processing.

4. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 2 is characterized by: The upper tire pressure base plate (11) is connected to the hydraulic press or the transition tire, and bolt connection holes are arranged on it according to the connection groove position. The contact surface of the upper tire pressure base plate (11) is machined after the upper tire (10) is integrally assembled and welded, and the flatness is ≤1mm; The upper tire load-bearing upright plate (12) is arranged on the upper tire pressure bottom plate (11), and the number of the upper tire load-bearing upright plates (12) is determined by calculation based on the required bearing strength. The upper tire transition vertical plate (13) is arranged between the upper tire load-bearing vertical plates (12), the upper tire transition vertical plate (13) and the upper tire load-bearing vertical plates (12) are intermittently welded at their edges, a groove is opened on the side of the linear working surface for continuous full welding, and plug welding holes are opened between the upper tire load-bearing vertical plates (12) and the upper tire transition vertical plates (13) according to the plate thickness of the parts; The upper tire enclosure plate (14) is arranged adjacent to the upper tire working surface, and the upper tire enclosure plate (14) is processed according to the side line of the upper tire load-bearing vertical plate (12) and the upper tire transition vertical plate (13), and is welded to both sides of the upper tire load-bearing vertical plate (12) and the upper tire transition vertical plate (13) to further strengthen the stability of the upper tire load-bearing vertical plate (12) and the upper tire transition vertical plate (13); The upper tire reinforcement lug (15) is welded between the upper tire pressure base plate (11) and the upper tire load-bearing vertical plate (12) and is used to further strengthen the overall stability of the upper tire (10) and facilitate the installation and lifting of the upper tire (10).

5. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 2 is characterized by: Both ends of the upper tire working surface are upper tire load-bearing vertical plates (12).

6. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 3 is characterized by: The lower tire pressure base plate (21) is placed and fixed on a corresponding work platform, and the contact surface of the lower tire pressure base plate (21) is machined after the lower tire (20) is integrally assembled and welded, with a flatness of ≤1 mm; The lower tire load-bearing upright plate (22) is arranged on the lower tire pressure bottom plate (21), and the number of the lower tire load-bearing upright plates (22) is determined by calculation based on the required bearing strength. The lower tire transition vertical plate (23) is arranged between the lower tire load-bearing vertical plates (22), the lower tire transition vertical plate (23) and the lower tire load-bearing vertical plates (22) are intermittently welded at their edges, a groove is opened on the side of the linear working surface for continuous full welding, and plug welding holes are opened between the lower tire load-bearing vertical plates (22) and the lower tire transition vertical plates (23) according to the plate thickness of the parts; The lower tire enclosure plate (24) is arranged adjacent to the lower tire working surface, and the lower tire enclosure plate (24) is processed according to the side line of the lower tire load-bearing vertical plate (22) and the lower tire transition vertical plate (23), and is welded to both sides of the lower tire load-bearing vertical plate (22) and the lower tire transition vertical plate (23) to further strengthen the stability of the lower tire load-bearing vertical plate (22) and the lower tire transition vertical plate (23); The lower tire reinforcement lug (25) is welded between the lower tire pressure base plate (21) and the lower tire load-bearing vertical plate (22) to further strengthen the overall stability of the lower tire (20) and facilitate the installation and lifting of the lower tire (20).

7. The one-step forming method of a thick high-strength steel hyperbolic transition ring plate according to claim 3 is characterized by: Both ends of the lower tire working surface are lower tire load-bearing vertical plates (22).

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