Special-shaped ring rolling device for spherical pipeline valve forgings
By using a shaped rolling mill device for spherical pipe valve forgings, the problems of low material utilization and high energy consumption have been solved, and efficient and energy-saving forging production has been achieved, improving product performance and production efficiency.
Patent Information
- Application Number
- CN202520313385.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing rectangular cross-section forging and rolling ring forming processes and multi-fire irregular forging processes have problems such as low material utilization, uneven forging allowance, high energy consumption, and complicated process flow when manufacturing large subsea oil pipeline valve forgings.
The device for rolling spherical pipe valve forgings with irregular shapes is adopted. It includes an irregular mandrel, an irregular main roll, an irregular clamping roll and a rolling ring cone roll. The irregular rolling ring process directly rolls the pre-made billet into a shape close to the finished product, optimizes the forging allowance and material utilization, and reduces the number of forging fires and energy consumption.
It improves material utilization and the uniformity of forging performance, shortens the production cycle, reduces energy consumption and production costs, optimizes the process flow, and improves forming accuracy and product quality.
Smart Images
Figure CN223801460U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a forging die technical field, concretely is a kind of ball pipeline valve forging special-shaped roll ring device. BACKGROUND
[0002] In the field of petroleum industry, large submarine oil pipeline valve forgings play a vital role in the process of oil transportation, and their quality and performance directly affect the safety and efficiency of oil transportation. Large submarine oil pipeline valve forgings are of spherical hollow high-cylinder structure, and generally adopt rectangular cross-section forging roll ring forming process or multi-fire special-shaped forging process in the manufacturing process, and the choice of manufacturing process has a decisive influence on the quality and production efficiency of pipeline valve forgings.
[0003] Although the rectangular cross-section forging roll ring forming process has certain application, it has many drawbacks: when the rectangular cross-section forging roll ring forming process is adopted, the material utilization rate is low during the forging process of the product, and the forging allowance is large and uneven, which not only causes waste of materials, but also leads to certain differences in the performance of the forgings after heat treatment; In addition, due to the allowance problem, time and effort are consumed in the machining link, increasing production cost and production cycle.
[0004] Multi-fire special-shaped forging process also faces difficulties: due to the limitation of material forging window, multi-fire heating is required in the oil pressure process of the forging blank, which makes the product manufacturing process complicated and energy consumption increases significantly, which is contrary to the current green development concept and is not conducive to the sustainable development of the industry.
[0005] In summary, the two main manufacturing processes currently exist obvious defects, and a new technology is urgently needed to solve the problems of low material utilization rate, uneven forging allowance, high energy consumption and complicated process flow. UTILITY MODEL CONTENTS
[0006] The utility model aims to provide a kind of ball pipeline valve forging special-shaped roll ring device to solve the problems of low material utilization rate, uneven forging allowance, high energy consumption and complicated process flow in the two main manufacturing processes currently exist obvious defects.
[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of globular pipeline valve forging special-shaped ring rolling device, including special-shaped mandrel installed on ring rolling machine, and special-shaped main roller, special-shaped hug roller and ring rolling cone roller are respectively provided with around the special-shaped mandrel on ring rolling machine;The special-shaped mandrel is vertically arranged cylindrical mandrel and is provided with the special-shaped mandrel ball of elliptic globular shape with arc outer convex in middle;The special-shaped main roller is vertically arranged cylindrical main roller, and the side wall of cylindrical main roller is provided with arc inner concave main roller camber;The special-shaped hug roller is vertically arranged cylindrical hug roller and its side wall is provided with arc inner concave hug roller camber;The ring rolling cone roller includes upper cone roller and lower cone roller.
[0008] Preferably, the upper and lower ends of the special-shaped mandrel ball are respectively provided with upper mandrel and lower mandrel, the top end of the upper mandrel is connected with the ring rolling machine through upper bearing seat, and the bottom end of the lower mandrel is connected with the ring rolling machine through lower bearing seat.
[0009] Preferably, the axis of the special-shaped main roller is provided with main roller driving shaft, and the main roller driving shaft and the special-shaped main roller are connected into an integrated whole through main roller connecting key; the bottom end of the main roller driving shaft is connected with the ring rolling machine through main shaft bearing seat; the top of the special-shaped main roller is provided with main roller upper cover, the main roller driving shaft penetrates through the main roller upper cover and is connected with main roller driving motor at the top end.
[0010] Preferably, the axis of the special-shaped hug roller is provided with hug roller mandrel, the hug roller mandrel and the special-shaped hug roller are connected into an integrated whole through hug roller connecting key, and the upper and lower ends of the hug roller mandrel are connected with the support of the ring rolling machine through bearing seat.
[0011] Preferably, the specifications of the hug roller camber and the main roller camber are the same, the special-shaped mandrel ball is arranged at the center of the forging, the hug roller camber and the main roller camber are arranged at the outer side of the forging, and the upper cone roller and the lower cone roller are respectively arranged at the upper and lower ends of the forging.
[0012] Preferably, a laser range finder is further arranged between the upper cone roller and the lower cone roller.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1、The utility model reduces the forging times of oil pressure prefabricated blank process during globular pipeline valve forging production, maximally shortens the forging time, adopts inner and outer circular surface synchronous special-shaped ring rolling process after prefabricated blank forging, adopts special-shaped mandrel matched special-shaped hug roller and special-shaped main roller, directly rolls prefabricated blank into forging rough casting close to finished product form in ring rolling process;
[0015] 2. According to the structure of the main roller of the ring rolling machine designed according to the shape and size of the spherical valve forging, the forging allowance of the forging is designed according to the principle of uniform distribution of the allowance, the arc size outside the main roller is consistent with the outer diameter surface size of the forging, and the main roller is designed as an integrated main roller, the uniformity and stability of the performance of the forging are improved, and the service life of the forging is further improved;
[0016] 3. According to the spherical arc of the outer diameter surface of the valve forging, an integrated image roller is designed, the existing integrated cylindrical roller structure is changed into an integrated outer side special-shaped structure roller, the contact area of the special-shaped forging with the roller during rolling is improved, the stability of the special-shaped forging during ring rolling is ensured, and the material utilization rate of the valve forging is improved;
[0017] 4. The problem of low material utilization rate of the rectangular cross-section ring rolling process is solved, the near-net forming ring rolling technology is adopted, the material utilization rate is improved, the energy consumption in the manufacturing process is reduced, the forging allowance of each part of the forging is more uniform after the forging allowance of the inner and outer diameter surface arc parts is reduced, the product process is optimized, and the uniformity of the product performance is improved;
[0018] 5. The ring rolling preform blank preparation adopts a rectangular cross-section, the forming difficulty of the oil pressure process is reduced, the forging heat times are greatly reduced, the energy consumption and time in the preform blank process are reduced, and the shortening of the heating time is beneficial to optimizing the grain size of the material;
[0019] 6. The application of the utility model optimizes the heat treatment process in the production process of the valve forging, reduces the machining turning amount of the valve forging, improves the forming precision of the special-shaped rolling, and reduces the rejection rate. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic view of the utility model;
[0021] Figure 2 It is Figure 1 a structural schematic view;
[0022] Figure 3 It is a special-shaped mandrel schematic view;
[0023] Figure 4 It is Figure 2 an enlarged view of A in the middle;
[0024] In the figure: special-shaped mandrel-1, special-shaped mandrel ball-11, upper mandrel-12, lower mandrel-13, upper bearing seat-14, lower bearing seat-15, special-shaped main roller-2, main roller camber-21, main roller drive shaft-22, main shaft bearing seat-23, main roller upper cover-24, main roller drive motor-25, main roller connecting key-26, special-shaped pinch roller-3, pinch roller camber-31, pinch roller mandrel-32, pinch roller connecting key-33, ring rolling cone roller-4, upper cone roller-41, lower cone roller-42, laser range finder-5. DETAILED DESCRIPTION
[0025] In order to make the technical personnel in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings and specific embodiments.
[0026] Please refer to Figures 1-4 , Figure 1 for the schematic diagram of the present application; Figure 2 for Figure 1 the structural schematic diagram; Figure 3 for the schematic diagram of the special-shaped mandrel; Figure 4 for Figure 2 the enlarged view of A in the figure.
[0027] The present application provides a kind of special-shaped ring rolling device of globular pipeline valve forgings, for the blank after heating is rolled into the specification required by globular pipeline valve;Including the special-shaped mandrel 1 installed on ring rolling machine, and there are special-shaped main roller 2, special-shaped pinch roller 3 and ring rolling cone roller 4 respectively around the special-shaped mandrel 1 on ring rolling machine are provided.
[0028] The special-shaped mandrel 1 is vertically arranged cylindrical mandrel, and is provided with the special-shaped mandrel ball 11 of elliptical globular shape with arc-shaped outer convex in the middle of mandrel, and is respectively provided with upper mandrel 12 and lower mandrel 13 in the upper and lower ends of the special-shaped mandrel ball 11, the top end of the upper mandrel 12 is connected with ring rolling machine by upper bearing seat 14, and the bottom end of the lower mandrel 13 is connected with ring rolling machine by lower bearing seat 15.
[0029] The special-shaped main roller 2 is a vertically arranged cylindrical main roller, and the side wall of the cylindrical main roller is provided with an arc-shaped concave main roller arc surface 21, which is used in cooperation with the special-shaped mandrel ball 11 to roll and form the inner and outer arc surfaces of the forge piece; the special-shaped main roller 2 is provided with a main roller driving shaft 22 at the axis thereof, and the special-shaped main roller 2 and the main roller driving shaft 22 are connected into an integrated whole through a main roller connecting key 26, so that the special-shaped main roller 2 can be driven to rotate by the main roller driving shaft 22; the bottom end of the main roller driving shaft 22 is connected with the ring rolling machine through a main shaft bearing seat 23; the top of the special-shaped main roller 2 is provided with a main roller upper cover 24, the main roller driving shaft 22 penetrates through the main roller upper cover 24 and is connected at the top end with a main roller driving motor 25 for providing power for the special-shaped main roller 2.
[0030] The special-shaped holding roller 3 is a vertically arranged cylindrical holding roller, and the side wall of the cylindrical holding roller is provided with an arc-shaped concave holding roller arc surface 31, and the axis of the special-shaped holding roller 3 is provided with a holding roller mandrel 32, which is connected into an integrated whole with the special-shaped holding roller 3 through a holding roller connecting key 33, and the upper and lower ends of the holding roller mandrel 32 are connected with the support of the ring rolling machine through bearing seats.
[0031] The ring rolling conical roller 4 includes an upper conical roller 41 and a lower conical roller 42, which are respectively arranged at the upper and lower ends of the forge piece for rolling the upper and lower ends of the forge piece.
[0032] The holding roller arc surface 31 and the main roller arc surface 21 have the same specifications, the special-shaped mandrel ball 11 is arranged at the center of the forge piece, and the holding roller arc surface 31 and the main roller arc surface 21 are arranged on the outside of the forge piece, and the inner and outer surfaces of the forge piece are rolled to the required specifications through the cooperation of the special-shaped mandrel ball 11 and the holding roller arc surface 31 and the main roller arc surface 21; the upper conical roller 41 and the lower conical roller 42 are respectively arranged at the upper and lower ends of the forge piece, and the upper and lower ends of the forge piece are rolled to the required specifications.
[0033] In addition, a laser range finder 5 is further arranged between the upper conical roller 41 and the lower conical roller 42 for detecting the rolling specifications of the forge piece.
[0034] In use, according to the outer diameter surface spherical size and structure of the valve forge piece, the preform size after ring rolling is designed in a uniform increase forging allowance manner, the special-shaped main roller and special-shaped holding roller for ring rolling are designed according to the outer diameter surface spherical structure and size of the ring rolling preform, and the outer diameter surface spherical size of the final forming mandrel for ring rolling is designed according to the inner diameter surface spherical size and structure of the valve forge piece.
[0035] In the production operation, the finished blank is taken out from the heating furnace and placed on the workbench of the forging oil press, the oil press is started to upset and stretch the blank to the process required size according to the process parameters, and the blank is punched; then the preformed blank finished by the oil press is moved to the ring rolling machine, and the ring rolling operation is carried out.
[0036] In the ring rolling, first, the blank is rolled and expanded by using the conventional mandrel, main roller and holding roller, and then returned to the heating furnace for heating; at the same time, the conventional tool of the ring rolling machine is replaced by the special-shaped mandrel 1, special-shaped main roller 2 and special-shaped holding roller 3; then the expanded preformed blank heated is moved to the ring rolling machine, and the special-shaped ring rolling is used to complete the special-shaped rolling and expanding of the valve forgings according to the process parameters, and the high-temperature size is rolled according to 1.0165x room temperature size. After the forgings finished by the special-shaped rolling are cooled, heat treatment and mechanical processing are carried out to complete the manufacturing of the final products.
[0037] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, for those skilled in the art, it can be understood that all other embodiments obtained by various changes, modifications, replacements and modifications of these embodiments without departing from the principles and spirits of the utility model and without making creative labor belong to the protection scope of the utility model.
Claims
1. A device for rolling irregularly shaped rings for spherical pipe valve forgings, characterized in that: The application relates to a special-shaped core shaft (1) installed on a ring rolling machine, and special-shaped main rollers (2), special-shaped holding rollers (3) and ring rolling conical rollers (4) are arranged around the special-shaped core shaft (1) on the ring rolling machine; the special-shaped core shaft (1) is a vertically arranged cylindrical core shaft and is provided with an elliptical spherical special-shaped core shaft ball (11) protruding outward in an arc shape at the middle; the special-shaped main roller (2) is a vertically arranged cylindrical main roller, and the side wall of the cylindrical main roller is provided with a main roller arc surface (21) recessed inward in an arc shape; the special-shaped holding roller (3) is a vertically arranged cylindrical holding roller, and the side wall of the special-shaped holding roller (3) is provided with a holding roller arc surface (31) recessed inward in an arc shape; the ring rolling conical roller (4) comprises an upper conical roller (41) and a lower conical roller (42).
2. The globoid pipe valve forging contoured roll ring apparatus of claim 1, wherein: An upper core shaft (12) and a lower core shaft (13) are arranged at the upper and lower ends of the special-shaped core shaft ball (11) respectively, the top end of the upper core shaft (12) is connected with the ring rolling machine through an upper bearing seat (14), and the bottom end of the lower core shaft (13) is connected with the ring rolling machine through a lower bearing seat (15).
3. The globoid pipe valve forging contoured roll ring apparatus of claim 2, wherein: A main roller driving shaft (22) is arranged at the axis of the special-shaped main roller (2), and the main roller driving shaft (22) is connected with the special-shaped main roller (2) into an integrated whole through a main roller connecting key (26); the bottom end of the main roller driving shaft (22) is connected with the ring rolling machine through a main shaft bearing seat (23); the top of the special-shaped main roller (2) is provided with a main roller upper cover (24), the main roller driving shaft (22) penetrates through the main roller upper cover (24) and is connected with a main roller driving motor (25) at the top end.
4. The globoid pipe valve forging contoured roll ring apparatus of claim 3, wherein: A holding roller shaft (32) is arranged at the axis of the special-shaped holding roller (3), the holding roller shaft (32) is connected with the special-shaped holding roller (3) into an integrated whole through a holding roller connecting key (33), and the upper and lower ends of the holding roller shaft (32) are connected with the support of the ring rolling machine through bearing seats.
5. The globoid pipe valve forging contoured roll ring apparatus of claim 4, wherein: The specifications of the holding roller arc surface (31) and the main roller arc surface (21) are the same, the special-shaped core shaft ball (11) is arranged at the center of the forge piece, the holding roller arc surface (31) and the main roller arc surface (21) are arranged at the outer side of the forge piece, and the upper conical roller (41) and the lower conical roller (42) are arranged at the upper and lower ends of the forge piece respectively.
6. The globoid pipe valve forging contoured roll ring apparatus of claim 5, wherein: A laser range finder (5) is further arranged between the upper conical roller (41) and the lower conical roller (42).