A precision forming method for valve rupture diaphragm
A rupture diaphragm, precision forming technology, applied in metal processing equipment, metal processing, manufacturing tools, etc., can solve the problem of low pass rate of diaphragm production, achieve important engineering application value, and improve the effect of production pass rate
Active Publication Date: 2019-07-16
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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Problems solved by technology
[0006] In view of the deficiencies of the above methods, the technical problem to be solved in the present invention is based on the key characteristics of the valve rupture diaphragm, and designs corresponding methods such as raw material selection, mold trial forming parameters, and laser non-destructive measurement. low rate problem
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[0025] Based on the key characteristics of the ruptured diaphragm of the valve, the invention designs corresponding raw material screening, mold trial forming parameters, laser non-destructive testing and other methods, and solves the problem of the qualified rate of the ruptured diaphragm. The steps are as follows: 1) The protection of the surface quality of the material, because the depth of the diaphragm notch, the air leakage, etc. have strict requirements on whether the surface of the raw material is scratched or corroded, so the raw material must be screened, and the qualified ones must be screened during the forming process Raw materials are protected. 2) Material performance, the raw material performance of each batch of products must meet certain technical indicators. 3) Before each batch of production, the key indicators such as pad thickness and forming pressure need to be determined by mold testing. The method of combining laser non-destructive measurement and comp...
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Abstract
The invention discloses a method for precise forming of a 1mm-thick pure-aluminum valve rupture film of a carrier rocket and belongs to the field of metal forming. The valve rupture film is an important part of a pressure valve of a storage box pipeline of the carrier rocket and plays an important role in pipeline communicating. Traditional production of the rupture film always relies on experience to determine a forming sequence and forming technological parameters, so that film products have a long production cycle and a low percent of pass. According to the invention, corresponding methods such as raw material screening, forming parameter mold testing and laser damage-free measurement are designed based on key features of the valve rupture film, so that the problem about the percent of pass of the rupture film can be solved.
Description
technical field [0001] The invention belongs to the field of metal forming, and in particular relates to a precision forming method for valve rupture diaphragms. Background technique [0002] The rupture diaphragm is an important part of the pressure valve of the pipeline of the launch vehicle tank, and it plays an important role in the pipeline connection. Before the rocket engine is started, the diaphragm assembly is used to separate the fuel storage tank from the pressurization system. After the rocket is ignited and started, the diaphragm is ruptured by the pressure of the pressurized gas. Once used, the reliability requirements are extremely high. The key characteristic of the rupture diaphragm is its rupture pressure value. When the rupture diaphragm is installed in the pressure valve assembly housing, the non-marked side of the rupture diaphragm is fed with compressed air with a positive pressure of 0.6 MPa, and the pressure is maintained for 3 minutes. There should b...
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IPC IPC(8): B21D28/02B21C51/00
Inventor 郜阳陈长江胡蓝雷湘衡李强
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY