Large annular spinning workpiece stress relief heat treatment furnace structure
By designing a large annular spinning workpiece stress-removing heat treatment furnace structure, using steel plates, limiting components and multi-layer insulation design, the deformation problem of the workpiece during the heat treatment process is solved, and efficient and energy-saving stress-removing heat treatment effect is achieved.
Patent Information
- Application Number
- CN202420505311.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-15
AI Technical Summary
During the stress-relieving heat treatment process of large annular spinning workpieces, it is difficult to effectively control the rebound deformation and roundness deformation of spinning flange.
A large annular spinning workpiece stress-relieving heat treatment furnace structure is designed, adopting a combination of steel plates and limiting components, combining inner and outer ring plates, insulation cotton and electric heating plates, and through an annular structure and multi-layer insulation design, stable support and uniform heating of the workpiece are achieved.
It effectively prevents deformation of the workpiece during the heat treatment process, improves the efficiency of stress-removing heat treatment, and achieves energy-saving purposes through the annular structure.
Smart Images
Figure CN222556990U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petrochemical industry, in particular to a large-scale annular spinning workpiece stress relief heat treatment furnace structure. Background Art
[0002] For some pressure-bearing components of pressure vessels, when the fiber elongation exceeds the specification limit during the cold forming process, the pressure-bearing components must be subjected to post-forming stress relief heat treatment, such as the head, shell, and the spinning flanging section of the shell.
[0003] The large workpiece has an outer diameter of φ4950 / inner diameter of φ4650X24t, H=150, and is made of carbon steel. According to the requirements of the specification, stress relief heat treatment is required after spinning. When stress relief treatment is performed on large workpieces, the control of the springback deformation caused by the stress release of the spinning flange during the heat treatment process and the control of the roundness deformation during the stress relief heat treatment are urgent problems to be solved. For this reason, we propose a stress relief heat treatment furnace structure for large annular spinning workpieces. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a large-scale annular spinning workpiece stress relief heat treatment furnace structure.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A large-scale annular spinning workpiece stress relief heat treatment furnace structure is designed, comprising a steel plate, eight limiting assemblies are welded at equal intervals on the upper surface of the steel plate, a workpiece assembly is placed on one side of the limiting assembly, an inner ring plate and an outer ring plate are fixedly installed on the upper surface of the steel plate, the outer ring plate is located on the outer side of the inner ring plate, inner thermal insulation cotton and outer thermal insulation cotton are also placed on the upper surface of the steel plate, the outer thermal insulation cotton is in contact with the inner surface of the outer ring plate, the inner thermal insulation cotton is in contact with the outer surface of the inner ring plate, the workpiece assembly is located between the inner thermal insulation cotton and the outer thermal insulation cotton, a plurality of electric heating plates are fixed at equal intervals on the inner side surface of the outer thermal insulation cotton through thermal insulation nails, a plurality of inner diagonal braces in contact with the steel plate are fixed at equal intervals on the inner surface of the inner ring plate, a plurality of outer diagonal braces in contact with the steel plate are fixed at equal intervals on the outer surface of the outer ring plate, and upper thermal insulation cotton is placed on the top of the inner thermal insulation cotton and the outer thermal insulation cotton.
[0007] Preferably, the limiting assembly includes a horizontal plate, an L-shaped longitudinal plate, and a guide slope. The bottom of the L-shaped longitudinal plate is fixedly welded to the steel plate, a guide slope is provided on one side of the top of the L-shaped longitudinal plate, a horizontal plate is fixed on one side of the L-shaped longitudinal plate, and the workpiece assembly is placed on the upper part of the horizontal plate.
[0008] Preferably, the workpiece assembly includes four workpieces and a first tie plate, a second tie plate, a third tie plate, and a fourth tie plate. The first tie plate is placed at equal intervals on one side of the top workpiece, the fourth tie plate is placed at equal intervals between the two top workpieces, the second tie plate is placed at equal intervals between the two middle workpieces, the fourth tie plate is placed at equal intervals between the two bottom workpieces, and the third tie plate that interferes with the limit assembly is placed at equal intervals on one side of the bottom workpiece, and the first tie plate, the second tie plate, the third tie plate, and the fourth tie plate correspond to the limit assembly one by one.
[0009] The large annular spun workpiece stress relief heat treatment furnace structure proposed by the utility model has the beneficial effect that the utility model can effectively perform stress relief heat treatment on large workpieces to prevent deformation of the workpieces during the heat treatment process. The annular structure design can greatly save energy and can also perform stress relief heat treatment on four workpieces at a time, greatly improving efficiency.
[0010] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0012] Figure 1 This is a schematic diagram of the front view of the large-scale annular spinning workpiece stress relief heat treatment furnace structure proposed by the utility model;
[0013] Figure 2 This is a schematic diagram of the structure of a large-scale annular spinning workpiece stress relief heat treatment furnace structure top view proposed by the utility model;
[0014] Figure 3 This is a schematic diagram of the workpiece assembly structure of a large-scale annular spinning workpiece stress relief heat treatment furnace structure proposed by the utility model;
[0015] Figure 4 This is a schematic diagram of the front view of the structure limit assembly of the large annular spinning workpiece stress relief heat treatment furnace proposed by the utility model;
[0016] Figure 5 This is a left view structural schematic diagram of the limit assembly of the large annular spinning workpiece stress relief heat treatment furnace proposed by the utility model;
[0017] Figure 6This is a schematic diagram of the top view of the structure limit assembly of the large annular spinning workpiece stress relief heat treatment furnace proposed by the utility model;
[0018] Figure 7 Schematic diagram of the workpiece structure.
[0019] In the figure: horizontal plate 1, L-shaped longitudinal plate 2, guiding inclined surface 21, steel plate 3, limiting assembly 4, inner diagonal brace 5, inner ring plate 6, inner thermal insulation cotton 7, upper thermal insulation cotton 8, workpiece assembly 9, first tie plate 91, second tie plate 92, third tie plate 93, fourth tie plate 94, outer thermal insulation cotton 10, outer ring plate 11, outer diagonal brace 12, electric heating plate 13. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Reference Figure 1-7 The structure of a large annular spinning workpiece stress relief heat treatment furnace includes a steel plate 3, eight limiter components 4 are welded at equal intervals on the upper surface of the steel plate 3, the limiter components 4 support the workpiece component 9, and the workpiece component 9 is placed on one side of the limiter component 4. An inner ring plate 6 and an outer ring plate 11 are fixedly installed on the upper surface of the steel plate 3, and the outer ring plate 11 is located on the outer side of the inner ring plate 6. Inner insulation cotton 7 and outer insulation cotton 10 are also placed on the upper surface of the steel plate 3. The outer insulation cotton 10 conflicts with the inner surface of the outer ring plate 11, and the inner insulation cotton 7 is in contact with the inner surface of the inner ring plate 11. The outer surface of the plate 6 is in conflict, and the workpiece assembly 9 is located between the inner insulation cotton 7 and the outer insulation cotton 10. The inner side surface of the outer insulation cotton 10 is fixed with multiple electric heating plates 13 at equal intervals through insulation nails. The inner surface of the inner ring plate 6 is fixed with multiple inner diagonal braces 5 in conflict with the steel plate 3 at equal intervals. The outer surface of the outer ring plate 11 is fixed with multiple outer diagonal braces 12 in conflict with the steel plate 3 at equal intervals. The upper insulation cotton 8 is placed on the top of the inner insulation cotton 7 and the outer insulation cotton 10. The annular setting can greatly reduce the heating space, thereby achieving the purpose of energy saving.
[0022] The limiting assembly 4 includes a transverse plate 1, an L-shaped longitudinal plate 2, and a guide slope 21. The bottom of the L-shaped longitudinal plate 2 is fixedly welded to the steel plate 3, and a guide slope 21 is provided on one side of the top of the L-shaped longitudinal plate 2. The transverse plate 1 is fixed to one side of the L-shaped longitudinal plate 2. The workpiece assembly 9 is placed on the upper part of the transverse plate 1, which can improve the stability of the support for the workpiece assembly 9 and control the roundness deformation of the workpiece during the stress relief heat treatment process. The guide slope 21 facilitates the installation of the workpiece and the limiting assembly 4.
[0023] The workpiece assembly 9 includes four workpieces and a first ribbed plate 91, a second ribbed plate 92, a third ribbed plate 93, and a fourth ribbed plate 94. The first ribbed plates 91 are placed at equal intervals on one side of the top workpiece, the fourth ribbed plates 94 are placed at equal intervals between the two top workpieces, the second ribbed plates 92 are placed at equal intervals between the two middle workpieces, the fourth ribbed plates 94 are placed at equal intervals between the two bottom workpieces, and the third ribbed plates 93 that are in contact with the limit assembly 4 are placed at equal intervals on one side of the bottom workpiece. The first ribbed plates 91, the second ribbed plates 92, the third ribbed plates 93, and the fourth ribbed plates 94 correspond one-to-one to the limit assembly 4. The first ribbed plates 91, the second ribbed plates 92, the third ribbed plates 93, and the fourth ribbed plates 94 can control the rebound deformation of the workpiece curved surface during stress release during the stress relief heat treatment process.
[0024] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0025] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A large-scale annular spinning workpiece stress relief heat treatment furnace structure, comprising a steel plate (3), characterized in that: Eight limiting components (4) are welded to the upper surface of the steel plate (3) at equal intervals in a circular shape, a workpiece component (9) is placed on one side of the limiting component (4), an inner ring plate (6) and an outer ring plate (11) are fixedly mounted to the upper surface of the steel plate (3), the outer ring plate (11) is located on the outer side of the inner ring plate (6), and inner thermal insulation cotton (7) and outer thermal insulation cotton (10) are also placed on the upper surface of the steel plate (3), the outer thermal insulation cotton (10) is in contact with the inner surface of the outer ring plate (11), and the inner thermal insulation cotton (7) is in contact with the outer surface of the inner ring plate (6). The workpiece assembly (9) is located between the inner thermal insulation cotton (7) and the outer thermal insulation cotton (10), the inner side surface of the outer thermal insulation cotton (10) is fixed with a plurality of electric heating plates (13) at equal intervals by thermal insulation nails, the inner surface of the inner ring plate (6) is fixed with a plurality of inner diagonal braces (5) in contact with the steel plate (3) at equal intervals, the outer surface of the outer ring plate (11) is fixed with a plurality of outer diagonal braces (12) in contact with the steel plate (3) at equal intervals, and the top of the inner thermal insulation cotton (7) and the outer thermal insulation cotton (10) is jointly placed with an upper thermal insulation cotton (8).
2. The large annular spinning workpiece stress relief heat treatment furnace structure according to claim 1 is characterized in that: The limiting assembly (4) comprises a transverse plate (1), an L-shaped longitudinal plate (2), and a guide bevel (21); the bottom of the L-shaped longitudinal plate (2) is fixedly welded to the steel plate (3); a guide bevel (21) is provided on one side of the top of the L-shaped longitudinal plate (2); a transverse plate (1) is fixed on one side of the L-shaped longitudinal plate (2); and the workpiece assembly (9) is placed on the upper part of the transverse plate (1).
3. The large annular spinning workpiece stress relief heat treatment furnace structure according to claim 1 is characterized in that: The workpiece assembly (9) comprises four workpieces and a first ribbed plate (91), a second ribbed plate (92), a third ribbed plate (93), and a fourth ribbed plate (94); the first ribbed plate (91) is placed at equal intervals on one side of the top workpiece; the fourth ribbed plate (94) is placed at equal intervals between the two top workpieces; the second ribbed plate (92) is placed at equal intervals between the two middle workpieces; the fourth ribbed plate (94) is placed at equal intervals between the two bottom workpieces; the third ribbed plate (93) that contacts the limit assembly (4) is placed at equal intervals on one side of the bottom workpiece; the first ribbed plate (91), the second ribbed plate (92), the third ribbed plate (93), and the fourth ribbed plate (94) correspond to the limit assembly (4) one by one.