Machining device suitable for pre-deformation treatment of end socket body before welding

Abstract

According to the machining device suitable for pre-deformation treatment before welding of the end socket body, pre-deformation treatment can be conducted on the end socket of a pressure container, and follow-up welding machining is facilitated. The device comprises an induction coil heating device, a pre-deformation processing roller device and a workbench capable of freely rotating and moving, the induction coil heating device is arranged in front of the pre-deformation processing roller device, and the metal material is softened through instantaneous heating; the pre-deformation processing roller device synchronously moves along with the movement of the induction coil heating device, and an upper roller and a lower roller can freely rotate, so that pre-deformation processing at different angles is realized; the workbench capable of freely rotating and moving can rotate and move by different degrees, and the machining efficiency and flexibility are improved. The device is high in pre-deformation treatment adaptability and suitable for welding of different materials, especially welding of thin-wall components, and special welding sequence optimization does not need to be conducted on the components. And uniform stress of the component and consistent machining area are ensured, and the machining efficiency and flexibility are improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel head body pre-welding processing equipment, and in particular to a processing device suitable for pre-deformation treatment of a head body before welding. Background Art

[0002] Since the head of the pressure vessel needs to meet the requirements of feeding and discharging materials, ensuring personnel inspection and maintenance of the container, and connecting other detection equipment or pipelines, it is necessary to open a hole in the head and perform welding processing to connect other structural parts. Welding technology, as a method of metal processing and forming, is widely used in production and life. In the process of welding, metal materials are prone to residual stress, which causes changes in the shape and size of the weldment due to local heating during welding, causing the weldment structure to fail. Therefore, it is necessary to control welding deformation. The methods for controlling welding deformation mainly include a reasonable welding sequence, which requires reasonable design and a large workload; welding tools or mechanical fixtures are fixed, which are prone to cracks; pre-welding pre-deformation treatment is also an effective method to reduce welding deformation. Its main principle is to deform the parts that are prone to deformation after welding before welding, so that the deformation of the welding part under the action of welding internal stress offsets the pre-deformation and becomes an ideal plane.

[0003] At present, the pre-welding and deformation treatment of welded structural parts is mainly cold processing. During the cold processing, due to the increase of dislocation density inside the metal, the metal components are prone to high internal stress, and due to the work hardening effect, the hardness of the metal components increases, but the plastic toughness decreases, and cracks are prone to occur under high stress. Reasonable welding sequence requires reasonable design and heavy workload; welding tools or mechanical fixtures are prone to cracks. Summary of the invention

[0004] Based on the above problems, the present invention proposes a processing device suitable for pre-deformation treatment of the head body before welding, so as to solve the problems of reduced plastic toughness of cold-processed metal components, easy cracking under high stress, large workload, welding tooling or mechanical clamping, easy cracking, etc.; pre-deformation treatment of the pressure vessel head is convenient for subsequent welding processing.

[0005] In order to solve the above technical problems, one of the purposes of the present invention is to provide a processing device suitable for pre-deformation treatment of a head body before welding, comprising a heating induction coil 1, a connecting shaft 2, a stretching shaft 3, a lifting platform 4, a screw 5, a fixing screw device 6, an upper roller fixing device 7, an upper roller 8, a lower roller 9, a bolt connection device 10, a clamp telescopic rail 11, a workbench 12, a rotating motor device 13, a telescopic motion device 14, a ground fixing device 15, a telescopic rotating shaft device 16 and a clamp 17,

[0006] The heating induction coil 1 is arranged in front of the pre-deformation roller device, and the metal material reaches the softening requirement through instantaneous heating;

[0007] The top of the lifting platform 4 is fixedly connected to the mechanical arm, and the bottom of the lifting platform 4 is connected to the connecting shaft 2, the stretching shaft 3 and the fixed screw device 6. When the lifting platform 4 is at a certain angle, the lifting platform is lifted to add tension to the material to cause deformation;

[0008] The lower roller 9 is controlled by the connecting shaft 2, the stretching shaft 3, and the fixed screw device 6. The position of the lower roller is changed by changing the length of the stretching shaft 3. The fixed screw device 6 cooperates with the screw 5 to fix and support.

[0009] Since the connecting shaft 2 is fixed at different positions after rotating at different angles, it is connected with the fixing screw device 6 with different inclined surfaces, and the fixing screw device 6 is disassembled and replaced;

[0010] The top of the upper roller fixing device 7 is fixedly connected to the mechanical arm, and the upper roller 8 is fixedly connected through the upper roller fixing device 7 to realize the rotation of the upper roller so that the processing surface of the upper roller is kept parallel to the processing surface of the lower roller;

[0011] The workbench 12 is provided with a clamp 17 on its surface through a clamp telescopic track 11 for telescopic movement. A rotating motor device 13 is installed at the lower end of the workbench 12 to control the rotation of the workbench. Below the rotating motor device 13 is a telescopic rotating shaft device 16 to realize spatial rotation of the workbench and processing of holes at different positions. The workbench is provided with a telescopic motion device 14, which is provided with motion wheels. When the processing position is determined, the device is retracted through the telescopic shaft and fixed by a ground fixing device 15.

[0012] The upper roller processing surface is kept parallel to the lower roller processing surface, and the fixing devices of the upper roller 8 and the lower roller 9 rotate at a certain angle in the same plane to achieve pre-deformation processing at different angles. The workbench 12 rotates and moves at different degrees to improve processing efficiency and flexibility.

[0013] Furthermore, the clamp 17 can be bent to fix the heads with different diameters.

[0014] Furthermore, the upper roller can rotate 360 ​​degrees, and upper rollers of different sizes can be loaded and unloaded.

[0015] Furthermore, the lower roller can rotate 360 ​​degrees, and lower rollers of different sizes can be loaded and unloaded.

[0016] Furthermore, four telescopic rotating shaft devices 16 are provided.

[0017] Furthermore, the length of the pulling shaft 3 changes, which plays a role of fixing and supporting, and at the same time realizes the angle change of the lower roller to achieve pre-deformation of the head at different heights.

[0018] Furthermore, the pre-deformation height is 2mm-6mm, and the pre-deformation width is 13mm-25mm.

[0019] Furthermore, the telescopic motion device 14 is equipped with motion wheels, which are retracted through a telescopic shaft and fixed by a ground fixing device when the processing position is determined.

[0020] The above one or more technical solutions of the present invention have at least one or more of the following technical effects:

[0021] The device of the present invention can effectively improve the metal structure and mechanical properties, improve the ductility of the component, and in the heated state, the internal slip system of the metal increases, the deformation is more coordinated, the residual stress is small, thereby reducing the deformation resistance and energy consumption, and it is not easy to initiate cracks, with high efficiency and large output.

[0022] Compared with welding sequence, deformation treatment does not require complex simulation or calculation to predict welding deformation, and can effectively avoid the problem of residual stress concentration caused by unreasonable welding sequence. Compared with mechanical fixation, welding deformation is reduced by offsetting welding stress, avoiding the phenomenon of cracking of components under mechanical fixation.

[0023] Pre-deformation treatment has strong adaptability and is suitable for different materials, especially for the welding of thin-walled components. It does not require special optimization of the welding sequence of the components. It ensures that the components are evenly stressed and the processing area is consistent, thus improving processing efficiency and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : A schematic diagram of the structure of the present invention;

[0025] Figure 2 : Schematic diagram of the freely rotating and moving workbench structure;

[0026] Figure 3 : Schematic diagram of the workbench surface and the clamp telescopic track;

[0027] Among them: 1-heating induction coil, 2-connecting shaft, 3-stretching shaft, 4-lifting platform, 6-fixing screw device, 7-upper roller fixing device, 8-upper roller, 9-lower roller, 10-bolt connection device, 11-clamp telescopic rail, 12-workbench, 13-rotating motor device, 14-telescopic motion device, 15-ground fixing device, 16-telescopic rotating shaft device, 17-clamp. Specific implementation plan

[0028] The invention discloses a processing device suitable for pre-deformation treatment of a head body before welding, which can perform pre-deformation treatment on the head of a pressure vessel and is convenient for subsequent welding processing.

[0029] First, the material is softened by heating the induction coil. The lower roller is adjusted in height by the stretching shaft and fixed in position by specific bolts so that it is parallel to the rolling surface of the upper roller. The pre-deformation of the head is achieved by rotating the workbench. The pre-deformation of different parts of the head before welding is achieved by the rotation of the workbench.

[0030] A processing device suitable for pre-deformation treatment of a head body before welding, comprising a heating induction coil; a connecting shaft; a stretching shaft; a lifting platform; a fixing screw device; an upper roller fixing device; an upper roller; a lower roller; a bolt connection device; a clamp telescopic track; a workbench; a rotating motor device; a telescopic motion device; a ground fixing device; a telescopic rotating shaft device; and a clamp. The induction coil heating device is arranged in front of the pre-deformation processing roller device, as shown in the attached Figure 1 As shown, the metal material is softened by instantaneous heating; the pre-deformation roller device moves synchronously with the induction coil heating device, and pre-deformation processing at different angles can be achieved for the upper roller and the lower roller; the freely rotating and movable workbench can rotate and move at different degrees, thereby improving processing efficiency and flexibility.

[0031] The lower roller is controlled by a connecting shaft, a stretching shaft, and a fixed screw device. The front and rear stretching shafts are installed on the connecting shaft. The position of the lower roller is changed by changing the length of the stretching shaft, that is, the pre-deformation of the head at different heights is achieved. The pre-deformation height is 2mm-6mm, and the pre-deformation width is 13mm-25mm. The fixed screw device plays a role of fixing and supporting. The lifting platform is located on the upper part of the connecting shaft and the stretching shaft. When the angle is constant, the lifting platform is lifted and lowered to add tension to the material, causing deformation. The lower roller shaft can be loaded and unloaded, and lower rollers of different sizes can be installed. The upper roller fixing support device is fixed by bolts. Since the fixing position is different after the connecting shaft rotates at different angles, different inclined fixing blocks are connected to the fixing screws, and the fixing blocks can be disassembled.

[0032] The upper roller is fixed by the upper roller fixing device, which can realize the rotation of the upper roller, and the upper roller processing surface is kept parallel to the lower roller processing surface; the upper roller can be loaded and unloaded, and upper rollers with different slopes and sizes can be installed.

[0033] The freely rotatable workbench is provided with a fixture, which can be attached Figure 2The telescopic track of the clamp shown in the figure can perform telescopic movement, and the clamp can be bent to fix the head bodies of different diameters; a rotating motor device is installed under the workbench to control the rotation of the workbench; below the rotating motor device are 4 telescopic rotating shaft devices to realize the spatial rotation of the workbench and realize the processing of holes in different positions; the workbench is equipped with a telescopic movement device, which is equipped with moving wheels. When the processing position is determined, it is retracted through the telescopic shaft and fixed by a ground fixing device.

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the obtained embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0035] like Figure 1 As shown, a processing device suitable for pre-deformation treatment of the head body before welding includes a heating induction coil; a connecting shaft; a stretching shaft; a lifting platform; a fixing screw device; an upper roller fixing device; an upper roller; a lower roller; a bolt connection device; a clamp telescopic track; a workbench; a rotating motor device; a telescopic motion device; a ground fixing device; a telescopic rotating shaft device; and a clamp. The induction coil heating device is arranged in front of the pre-deformation processing roller device, as shown in the attached Figure 1 As shown, the metal material is softened by instantaneous heating; the pre-deformation roller device moves synchronously with the induction coil heating device, and pre-deformation processing at different angles can be achieved for the upper roller and the lower roller; the freely rotating and movable workbench can rotate and move at different degrees, thereby improving processing efficiency and flexibility.

[0036] The lower roller is controlled by a connecting shaft, a stretching shaft and a fixed screw device. The front and rear stretching shafts are installed on the connecting shaft. The position of the lower roller is changed by changing the length of the stretching shaft, that is, the pre-deformation of the head at different heights is achieved. The pre-deformation height is 4mm and the pre-deformation width is 15mm. The fixed screw device plays a role of fixing and supporting. The lifting platform is located on the upper part of the connecting shaft and the stretching shaft. When the angle is constant, the lifting platform is lifted to add tension to the material to cause deformation. The lower roller shaft can be loaded and unloaded, and lower rollers of different sizes can be installed. The upper roller fixing support device is fixed by bolts. Since the fixing position is different after the connecting shaft rotates at different angles, different inclined fixing blocks are connected to the fixing screws, and the fixing blocks can be disassembled.

[0037] The upper roller is fixed by the upper roller fixing device, which can realize the rotation of the upper roller, and the upper roller processing surface is kept parallel to the lower roller processing surface; the upper roller can be loaded and unloaded, and upper rollers with different slopes and sizes can be installed.

[0038] The freely rotatable workbench top is equipped with a clamp that can be Figure 2 The telescopic track of the clamp shown in the figure can perform telescopic movement, and the clamp can be bent to fix the head bodies of different diameters; a rotating motor device is installed under the workbench to control the rotation of the workbench; below the rotating motor device are 4 telescopic rotating shaft devices to realize the spatial rotation of the workbench and realize the processing of holes in different positions; the workbench is equipped with a telescopic movement device, which is equipped with moving wheels. When the processing position is determined, it is retracted through the telescopic shaft and fixed by a ground fixing device.

[0039] The present invention can transform the device into a corresponding processing device according to the specific shape of the head, and is used for welding pre-deformation treatment of heads of different sizes.

[0040] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A processing device suitable for pre-deformation treatment of a head body before welding, characterized in that: The invention comprises a heating induction coil (1), a connecting shaft (2), a stretching shaft (3), a lifting platform (4), a screw (5), a screw fixing device (6), an upper roller fixing device (7), an upper roller (8), a lower roller (9), a bolt connection device (10), a clamp telescopic rail (11), a workbench (12), a rotating motor device (13), a telescopic motion device (14), a ground fixing device (15), a telescopic rotating shaft device (16) and a clamp (17). The heating induction coil (1) is arranged in front of the pre-deformation processing roller device, and the metal material reaches the softening requirement through instantaneous heating; The top of the lifting platform (4) is fixedly connected to the mechanical arm, and the bottom of the lifting platform (4) is connected to a connecting shaft (2), a stretching shaft (3) and a fixed screw device (6). When the lifting platform (4) is at a certain angle, the lifting platform is lifted to add tension to the material, causing deformation; The lower roller (9) is controlled by the connecting shaft (2), the stretching shaft (3) and the fixed screw device (6), and the position of the lower roller is changed by changing the length of the stretching shaft (3); the fixed screw device (6) cooperates with the screw (5) to play a role of fixing and supporting; Since the connection shaft (2) has different fixed positions after rotating at different angles, and is connected with a fixing screw device (6) having different inclined surfaces, the fixing block can be disassembled and replaced; The top of the upper roller fixing device (7) is fixedly connected to the mechanical arm, and the upper roller (8) is fixedly connected through the upper roller fixing device (7) to realize the rotation of the upper roller so that the processing surface of the upper roller and the processing surface of the lower roller are kept parallel; The workbench (12) is provided with a clamp (17) on the tabletop through a clamp telescopic track (11) for telescopic movement. A rotating motor device (13) is installed at the lower end of the workbench (12) to control the rotation of the workbench. Below the rotating motor device (13) is a telescopic rotating shaft device (16) for realizing spatial rotation of the workbench and processing of holes at different positions. The workbench is provided with a telescopic movement device (14) which is provided with moving wheels. When the processing position is determined, the device is retracted through the telescopic shaft and fixed through a ground fixing device (15). The upper roller processing surface is kept parallel to the lower roller processing surface, and the fixing devices of the upper roller (8) and the lower roller (9) are rotated at a certain angle in the same plane to achieve pre-deformation processing at different angles, and the workbench (12) is rotated and moved at different degrees, thereby improving processing efficiency and flexibility.

2. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The clamp (17) can be bent to fix the end caps with different diameters.

3. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The upper roller (8) can rotate 360 ​​degrees, and upper rollers of different sizes can be loaded and unloaded.

4. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The lower roller (9) can rotate 360 ​​degrees, and lower rollers of different sizes can be loaded and unloaded.

5. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The telescopic rotating shaft devices (16) are provided with four.

6. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The length of the lifting shaft (3) changes, which plays a role of fixing and supporting, and at the same time realizes the angle change of the lower roller, thereby achieving pre-deformation of the head at different heights.

7. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 6 is characterized in that: The pre-deformation height is 2mm-6mm, and the pre-deformation width is 13mm-25mm.

8. The processing device suitable for pre-deformation treatment of the head body before welding according to claim 1 is characterized in that: The telescopic motion device (14) is equipped with motion wheels, which are retracted through the telescopic shaft and fixed by the ground fixing device when the processing position is determined.

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