Forming process of suspension insulator steel cap

Abstract

The invention discloses a forming process of a suspension insulator steel cap, which belongs to the technical field of insulator steel cap manufacturing and comprises the following steps: 1) blank forging: forging a blank by adopting a die forging process to form a shell without an embedded partition plate; (2) embedded partition plate welding is conducted, specifically, the embedded partition plate is welded into the blank; (3) machining and shaping; the embedded partition plate and the cavity are not integrally designed, so that the blank can be machined in a forging mode, the embedded partition plate is welded in the cavity after the blank is forged, and the shapes of the inner surface and the outer surface of the forged blank are close to the size of a finished part to the maximum extent; a finished product can be produced through simple machining of part of the appearance, the forging cost is controlled to a great extent, the mechanical property of the product is improved to a great extent, the product quality and the service life of the product are guaranteed, and potential quality hazards caused by an existing technology and high quality cost caused by the potential quality hazards are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of insulator steel cap manufacturing, and in particular relates to a molding process of a suspension insulator steel cap. Background Art

[0002] The insulator steel cap is an important component of the insulator. The insulator steel cap is used to fix the insulator on the pole tower, crossarm or other equipment of the power system. The insulator steel cap can protect the insulating elements inside the insulator. During the operation of the power system, the insulator needs to withstand various mechanical stresses such as gravity, wind force, tension, etc. of the conductor. It cooperates with the insulating elements to help improve the electric field distribution of the insulator and reduce the local electric field concentration phenomenon.

[0003] At present, for the suspension insulator steel caps with complex, irregular, thin-walled and embedded partitions, the processing technology adopted is blank casting supplemented by mechanical processing. From the perspective of the product's appearance and processability, casting has become the preferred processing solution for this product due to its advantages of good molding, less subsequent machining workload and low cost. However, the casting workpiece inevitably has disadvantages such as unsatisfactory mechanical properties and high defect rate. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problems and to propose a forming process for a suspension insulator steel cap.

[0005] In order to achieve the above object, the present invention adopts the following method: a forming process of a suspension insulator steel cap, which comprises the following steps:

[0006] 1) Blank forging: The blank is forged by die forging, and the formed blank is a shell without an embedded partition;

[0007] 2) Embedded partition welding: weld the embedded partition inside the blank;

[0008] 3) Machining and shaping: Use machining to groove the blank to obtain the finished insulator steel cap.

[0009] As a further description of the above technical solution:

[0010] In the step 1), a head boss is added to the cavity of the blank, and a positioning groove for welding the embedded partition is provided inside the cavity.

[0011] As a further description of the above technical solution:

[0012] In the step 2), the edge of the embedded partition is inserted into the positioning groove, and the edge of the embedded partition coincides with the edge of the positioning groove.

[0013] As a further description of the above technical solution:

[0014] In the step 3), the head boss is grooved by machining.

[0015] As a further description of the above technical solution:

[0016] In the step 3), the insulator steel cap is subjected to surface treatment.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] In the present invention, the embedded partition and the cavity do not adopt an integrated design, so that the blank can be processed by forging. After the blank is forged, the embedded partition is welded in the cavity. The inner and outer surface shapes of the blank after forging are as close to the size of the finished part as possible, and some of the shapes can be produced by simple mechanical processing. The forging cost is greatly controlled, the mechanical properties of the product are improved to a great extent, the product quality and service life are guaranteed, and the quality risks caused by the existing process and the high quality costs caused by it are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a flow chart of a forming process of a suspension insulator steel cap.

[0020] Figure 2 Schematic diagram of the blank structure after forging in step 1 of the forming process of a suspension insulator steel cap Figure 1 .

[0021] Figure 3 Schematic diagram of the blank structure after forging in step 1 of the forming process of a suspension insulator steel cap Figure 2 .

[0022] Figure 4 Schematic diagram of the blank structure after forging in step 1 of the forming process of a suspension insulator steel cap Figure 3 .

[0023] Figure 5 This is a schematic diagram of the blank structure after welding in step 2 of the forming process of a suspension insulator steel cap.

[0024] Figure 6 A schematic diagram of the finished product structure after machining in step 3 of the forming process of a suspension insulator steel cap Figure 1 >

[0025] Figure 7 A schematic diagram of the finished product structure after machining in step 3 of the forming process of a suspension insulator steel cap Figure 2 . DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example:

[0028] S01: Blank forging: The blank is forged by die forging. The formed blank is a shell without an embedded partition. The cavity of the blank is increased with a head boss, and a positioning groove for welding the embedded partition is provided inside the cavity;

[0029] S02: In-line partition welding: The edge of the in-line partition is inserted into the positioning groove, the edge of the in-line partition coincides with the edge of the positioning groove, and the in-line partition is welded inside the blank;

[0030] S03: Machining and shaping: The blank is grooved by machining. Specifically, the head boss is grooved by machining to obtain a finished insulator steel cap, and the insulator steel cap is subjected to sandblasting surface treatment.

[0031] The billet is made by using ordinary die forging technology to replace the existing casting technology, improve the mechanical properties of the product, and start from the structural processability of the product. Under the premise of ensuring product performance, the product structure is adjusted and optimized to improve its structural processability and reduce the manufacturing difficulty and cost. This is a good way to combine the advantages of casting and forging and make up for the disadvantages. Under the condition of controllable costs, the problem of process optimization and improvement is solved, and ultimately the purpose of ensuring product quality and reducing costs is achieved.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A forming process for a suspension insulator steel cap, characterized in that: The steps include: 1) Blank forging: The blank is forged by die forging, and the formed blank is a shell without an embedded partition; 2) Embedded partition welding: weld the embedded partition inside the blank; 3) Machining and shaping: Use machining to groove the blank to obtain the finished insulator steel cap.

2. The forming process of a suspension insulator steel cap according to claim 1, characterized in that: In the step 1), a head boss is added to the cavity of the blank, and a positioning groove for welding the embedded partition is provided inside the cavity.

3. The forming process of a suspension insulator steel cap according to claim 2, characterized in that: In the step 2), the edge of the embedded partition is inserted into the positioning groove, and the edge of the embedded partition coincides with the edge of the positioning groove.

4. The forming process of a suspension insulator steel cap according to claim 3, characterized in that: In the step 3), the head boss is grooved by machining.

5. The forming process of a suspension insulator steel cap according to claim 4, characterized in that: In the step 3), the insulator steel cap is subjected to surface treatment.

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