Storage tank barrel section integrated forming method and integrated storage tank barrel section

A barrel section and storage tank technology, which is applied in the field of spacecraft, can solve problems such as unsuitable aluminum alloys, and achieve the effects of improving reliability, high product dimensional accuracy, and high product reliability.

Inactive Publication Date: 2020-09-22
SHANGHAI SPACE PRECISION MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the materials used in this document are composite materials, it is not suitable for metal materials such as aluminum alloys.

Method used

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  • Storage tank barrel section integrated forming method and integrated storage tank barrel section
  • Storage tank barrel section integrated forming method and integrated storage tank barrel section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for integrally forming the barrel section of the storage tank according to the present invention comprises the following steps:

[0044] The first is the billet making process, using the casting ring rolling process to process the original billet; or using the coil welding process to roll the flat plate into a billet, and carry out non-destructive testing on the weld.

[0045] Specifically, the billet making process is divided into two technological solutions:

[0046] Option One:

[0047] 1) The hollow aluminum alloy ingot is used as the original billet, and the ingot is heated;

[0048] 2) Using a numerically controlled ring rolling mill, the heated hollow aluminum alloy ingot is rolled and deformed, so that the diameter of the billet is increased to the target size φ, the length is increased to H, and the material state is an annealed state.

[0049] Option II:

[0050]1) Using the numerical control roll bending process, the plate (material state is annea...

Embodiment 2

[0065] Such as figure 1 A schematic diagram of a method for integrally forming a storage tank section is shown, including the following steps:

[0066] 1) Obtain the original shell 2 by processing the billet making process described above;

[0067] 2) Install the spinning mold 3 with split structure, insert the original tube blank 2 into the spinning mold 3, and install it on the spinning base 4, start the spinning forming equipment, and put the four spinning wheels 1 into to the billet;

[0068] 3) Through the axial and normal movement of the four spinning wheels 1, the tube blank is fed in the axial direction to increase its length; the tube blank material is pressed into the groove of the spinning die 3 by feeding in the normal direction;

[0069] 4) When the material thinning rate of the original tube blank 2 increases to 5%, the spinning die 3 is removed, and the original tube blank 2 is subjected to stress relief annealing treatment;

[0070] 5) Continue to install th...

Embodiment 3

[0077] The invention also discloses an integrated storage tank barrel segment, which is prepared by adopting the above-mentioned integrated forming method of the storage tank barrel segment.

[0078] The integrated storage tank barrel section described in embodiment 3 utilizes the integrated forming method of the storage tank barrel section described in embodiment 1 or embodiment 2.

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Abstract

The invention provides a storage tank barrel section integrated forming method and an integrated storage tank barrel section. An original barrel blank is obtained through a blank making process; a spinning die is arranged, the original barrel blank is arranged outside a tool, a barrel blank material is extruded into the spinning die through a flowing spinning technology until the barrel blank material is attached to the spinning die, and a spinning rear barrel section is formed; overall solid solution aging is adopted, the performance of the barrel blank material is improved to a T6 state, meanwhile, the internal structure performance of the barrel blank material is uniform, and a part is formed; carrying out turning and flattening on a local recess, caused by extrusion, on the outer sideof the part; and the spinning die is unloaded, the formed part is taken out after a spinning wheel returns, and nondestructive inspection is carried out on the formed part. According to the storage tank barrel section integrated forming method and the integrated storage tank barrel section, the barrel blank is formed through integral ring rolling or roll welding, integral forming of the storage tank barrel section with a rib structure is achieved through combined machining modes of flow spinning forming, integral heat treatment, numerical control precision machining and the like, the materialutilization rate, the product reliability and the size precision are improved, and integral near-net forming of the storage tank barrel section of a carrier rocket is achieved.

Description

technical field [0001] The invention relates to the technical field of spacecraft, in particular to a method for integrally forming a barrel section of a storage tank and an integrated barrel section of the tank, and in particular to an integrated forming process technology for the barrel section of a launch vehicle. Background technique [0002] The propellant tank is one of the most critical structural components of the launch vehicle. It is a large-scale, thin-walled, high-strength aluminum alloy welded structure. As the main load-bearing structure of the launch vehicle, it is the largest structural component and influence in the rocket body structure. The key component for the safety and reliability of the launch vehicle accounts for 60% of the total mass of the rocket and 2 / 3 of the total length of the rocket. The propellant tank has typical characteristics such as large size, light weight, thin wall, and complexity, and is also an important determinant of the launch ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21D22/16B64G1/40
CPCB21D22/16B23P15/00B64G1/402
Inventor 杨学勤李淑慧冯苏乐于忠奇周宇王业伟冯呈庠刘立安
Owner SHANGHAI SPACE PRECISION MACHINERY RES INST
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