Positive arch grooving rupture disk and manufacturing method thereof

Abstract

The invention provides a positive arch grooving rupture disk and a manufacturing method thereof, the positive arch grooving rupture disk is subjected to laser treatment through a flat plate, stainless steel or elastic alloy can be selected as a material, and the manufacturing method comprises the steps of blanking, cleaning and drying, solid solution heat treatment, grooving, cleaning and drying, pre-arching, cleaning and drying, destressing, cleaning and drying and blasting testing. The invention provides a positive arch grooving rupture disk capable of preventing fragments from being generated, and provides a specific manufacturing method of the positive arch grooving rupture disk.

Description

Technical Field

[0001] The present application belongs to the technical field of aviation pressure instruments, and in particular relates to a positive arch groove bursting disc and a manufacturing method thereof. Background Art

[0002] In the field of aviation pressure instruments, bursting discs are generally used to protect the safety of hydraulic pipelines. When the bursting disc reaches the specified pressure value, it ruptures, releases the pipeline pressure, and protects the pipeline system.

[0003] Most of the blasting discs on the market are of positive arch type, which are easy to form fragments during the blasting process, causing certain safety impacts on other aircraft equipment. Therefore, it is necessary to design a blasting disc that does not produce fragments, and propose a manufacturing method thereof. Summary of the invention

[0004] Purpose of the invention: At present, bursting pieces are generally of positive arch type. When the bursting piece reaches the specified pressure value, it will rupture. Fragments will be generated during the rupture process. The fragments will cause certain safety accidents to other equipment of the aircraft. In order to solve the problem of generating fragments, a positive arch grooved bursting piece and a manufacturing method thereof are provided.

[0005] In a first aspect, the present application provides a method for manufacturing a positive arch groove bursting disc, the method comprising:

[0006] Cutting the sheet material to obtain a blank, and then cleaning and drying the blank;

[0007] Performing solution heat treatment, cleaning and drying on the blank;

[0008] Performing groove processing on the blank to obtain an initial grooved bursting piece, and cleaning and drying the initial grooved bursting piece;

[0009] Pre-arching, cleaning and drying the initial grooved bursting disc;

[0010] The initial grooved rupture piece is subjected to stress relief treatment, cleaning and drying to obtain a final positive arch grooved rupture piece.

[0011] Preferably, the method further comprises:

[0012] The initial notched bursting disc is subjected to a bursting test.

[0013] Preferably, the purpose of cutting is to cut sheets of different thicknesses into a circular shape according to the bursting pressure of the bursting disc.

[0014] Preferably, the purpose of cleaning and drying is to clean the grease on the surface of the material, and the specific parameters are cleaning for 30-60 minutes, using acetone as the cleaning agent, drying at 200° C., and drying time for 90 minutes.

[0015] Preferably, the purpose of the groove is to groove the circular bursting disc by laser, the shape of which is C-shaped, and the groove depth is calculated and simulated according to the size of the bursting pressure.

[0016] Preferably, the purpose of pre-arching is to apply pressure to the bursting disc to pre-arch shape, and the pre-arching depth is controlled by pressure and time.

[0017] Preferably, the purpose of the stress relief treatment is to remove the stress in the pre-arching process, and the specific parameters are a temperature of 400-450° C. and a heat preservation time of 120 min.

[0018] Preferably, the blasting test is performed by a customized blasting device, and the pressure increase rate and the pressurization time are performed in accordance with the designed parameter requirements.

[0019] In a second aspect, the present application further provides a positive arch groove bursting piece, wherein the positive arch groove bursting piece is manufactured by the above-mentioned method.

[0020] This application has the following technical effects:

[0021] The present invention provides a positive arch groove bursting piece and a manufacturing method thereof, which solves the unsafe problem caused by fragments; in addition, the present invention provides a manufacturing method for a positive arch groove bursting piece and provides a practical process method, which has high practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a positive arch groove rupture disc before processing;

[0023] Figure 2 This is a schematic diagram of the positive arch groove rupture piece after processing. DETAILED DESCRIPTION

[0024] It should be noted that, currently, blasting pieces are generally of positive arch type. When the blasting piece reaches the specified pressure value, it will rupture, and fragments will be generated during the rupture process. The fragments will cause certain safety accidents to other equipment of the aircraft. In order to solve the problem of generating fragments, a positive arch grooved blasting piece and a manufacturing method thereof are provided.

[0025] The present application provides a method for manufacturing a positive arch groove bursting disc, the method comprising:

[0026] Cutting the sheet material to obtain a blank, and then cleaning and drying the blank;

[0027] Performing solution heat treatment, cleaning and drying on the blank;

[0028] Performing groove processing on the blank to obtain an initial grooved bursting piece, and cleaning and drying the initial grooved bursting piece;

[0029] Pre-arching, cleaning and drying the initial grooved bursting disc;

[0030] The initial grooved rupture piece is subjected to stress relief treatment, cleaning and drying to obtain a final positive arch grooved rupture piece.

[0031] Wherein, the method further comprises:

[0032] The initial notched bursting disc is subjected to a bursting test.

[0033] Among them, the purpose of cutting is to cut plates of different thicknesses into a circular shape according to the bursting pressure of the bursting disc.

[0034] Among them, the purpose of cleaning and drying is to clean the grease on the surface of the material. The specific parameters are cleaning for 30-60 minutes, acetone as the cleaning agent, drying temperature of 200°C, and time of 90 minutes.

[0035] The purpose of grooving is to use laser to groove the circular blasting piece in a C-shape, and the groove depth is calculated and simulated according to the blasting pressure.

[0036] The purpose of pre-arching is to apply pressure to the bursting disc to form a pre-arch shape, and the pre-arching depth is controlled by pressure and time.

[0037] Among them, the purpose of stress relief treatment is to remove the stress in the pre-arch process, and the specific parameters are temperature 400-450℃ and insulation time 120min.

[0038] Among them, the blasting test is carried out through customized blasting equipment, and the pressure increase rate and pressurization time are carried out in accordance with the designed parameter requirements.

[0039] The present invention provides a positive arch groove bursting piece and a manufacturing method thereof, which solves the unsafe problem caused by fragments; in addition, the present invention provides a manufacturing method for a positive arch groove bursting piece and provides a practical process method, which has high practical application value.

[0040] The present application provides a positive arch grooved bursting disc and a manufacturing method thereof. The positive arch grooved bursting disc is lasered from a flat plate, and the material can be stainless steel or elastic alloy. The manufacturing method steps are blanking, cleaning and drying, solution heat treatment, groove engraving, cleaning and drying, pre-arching, cleaning and drying, stress relief, cleaning and drying, and bursting test. The present invention provides a positive arch grooved bursting disc that prevents the generation of fragments, and proposes a specific manufacturing method thereof.

[0041] The present application also provides a positive arch groove bursting piece, which is manufactured by the above method.

[0042] The present invention provides a positive arch groove bursting piece and a manufacturing method thereof, which solves the unsafe problem caused by fragments; in addition, the present invention provides a manufacturing method for a positive arch groove bursting piece and provides a practical process method, which has high practical application value.

[0043] The present application provides a positive arch grooved bursting disc and a manufacturing method thereof. The positive arch grooved bursting disc is lasered from a flat plate, and the material can be stainless steel or elastic alloy. The manufacturing method steps are blanking, cleaning and drying, solution heat treatment, groove engraving, cleaning and drying, pre-arching, cleaning and drying, stress relief, cleaning and drying, and bursting test. The present invention provides a positive arch grooved bursting disc that prevents the generation of fragments, and proposes a specific manufacturing method thereof.

[0044] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0045] See also Figure 1 to Figure 2 The schematic diagram of the positive arch groove bursting piece shown in FIG. Figure 1 It is the plate material of positive arch groove bursting disc, and its material is stainless steel, brass, aluminum alloy and nickel-based alloy.

[0046] Figure 2 This is a schematic diagram of a positive arch groove bursting disc, and its specific manufacturing process and method are as follows:

[0047] Manufacturing process: cutting, cleaning and drying, grooving, cleaning and drying, pre-arching, cleaning and drying, stress relief treatment, cleaning and drying, blasting test.

[0048] Cutting: The purpose of cutting is to cut plates of different thicknesses into a circular shape according to the bursting pressure of the bursting disc.

[0049] Cleaning and drying: The purpose of cleaning and drying is to clean the grease on the surface of the material. The specific parameters are cleaning for 30-60 minutes, acetone as the cleaning agent, drying temperature of 200°C, and time of 90 minutes.

[0050] Grooving: The purpose of grooving is to use laser to make grooves on the circular rupture disc. The shape is C-shaped. The groove depth is calculated and simulated according to the blasting pressure. During the grooving process, the rupture disc should be placed flat and not tilted to avoid uneven grooving and inconsistent blasting pressure values.

[0051] Pre-arching: The purpose of pre-arching is to apply pressure to the bursting disc to form a pre-arch, and control its pre-arching depth through pressure and time.

[0052] Stress relief treatment: The purpose of stress relief treatment is to remove the stress in the pre-arch process. The specific parameters are temperature 400-450℃ and insulation time 120min.

[0053] Burst test: The blast test is carried out through customized blasting equipment, and the parameters such as pressure increase rate and pressure increase time are carried out according to the designed parameter requirements.

[0054] The present application provides a positive arch grooved bursting disc and a manufacturing method thereof. The positive arch grooved bursting disc is lasered from a flat plate, and the material can be stainless steel or elastic alloy. The manufacturing method steps are blanking, cleaning and drying, solution heat treatment, groove engraving, cleaning and drying, pre-arching, cleaning and drying, stress relief, cleaning and drying, and bursting test. The present invention provides a positive arch grooved bursting disc that prevents the generation of fragments, and proposes a specific manufacturing method thereof.

Claims

1. A method for manufacturing a positive arch groove bursting disc, characterized in that: The method comprises: Cutting the sheet material to obtain a blank, and then cleaning and drying the blank; Performing solution heat treatment, cleaning and drying on the blank; Performing groove processing on the blank to obtain an initial grooved bursting piece, and cleaning and drying the initial grooved bursting piece; Pre-arching, cleaning and drying the initial grooved bursting disc; The initial grooved rupture piece is subjected to stress relief treatment, cleaning and drying to obtain a final positive arch grooved rupture piece.

2. The method according to claim 1, characterized in that The method further comprises: The initial notched bursting disc is subjected to a bursting test.

3. The method according to claim 2, characterized in that The purpose of cutting is to cut plates of different thicknesses into a circular shape according to the bursting pressure of the bursting disc.

4. The method according to claim 2, characterized in that: The purpose of cleaning and drying is to clean the grease on the surface of the material. The specific parameters are cleaning for 30-60 minutes, acetone as the cleaning agent, drying temperature of 200°C, and time of 90 minutes.

5. The method according to claim 2, characterized in that: The purpose of grooving is to use laser to groove the circular blasting disc in a C-shape. The groove depth is calculated and simulated according to the blasting pressure.

6. The method according to claim 2, characterized in that The purpose of pre-arching is to apply pressure to the bursting disc to form a pre-arch shape, and its pre-arch depth is controlled by pressure and time.

7. The method according to claim 2, characterized in that The purpose of stress relief treatment is to remove the stress in the pre-arching process. The specific parameters are temperature 400-450℃ and insulation time 120min.

8. The method according to claim 2, characterized in that: The blast test is carried out using customized blasting equipment, and the pressure increase rate and pressurization time are carried out in accordance with the designed parameter requirements.

9. A positive arch groove bursting disc, characterized in that: The positive arch groove bursting piece is manufactured by the method described in any one of claims 1-8.

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