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Forming method of iron-based superalloy shunt ring

A technology of iron-based superalloy and forming method, which is applied in the processing field of high temperature and high pressure and high gas shunt ring of solid rocket attitude control power system, can solve the problems of uneven wall thickness of outer wall, inability to realize pipe penetration technology, etc., and achieve the quality of forming appearance. Good, strong bearing capacity and uniform wall thickness

Active Publication Date: 2017-12-26
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for small-diameter and thin-walled iron-based superalloy hollow straight pipes, the traditional pipe-through technology cannot be realized; moreover, after the traditional straight pipe is bent, the outer wall is thinned by tension and the inner wall is thickened by compression, resulting in uneven wall thickness Shortcomings

Method used

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  • Forming method of iron-based superalloy shunt ring
  • Forming method of iron-based superalloy shunt ring
  • Forming method of iron-based superalloy shunt ring

Examples

Experimental program
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Effect test

Embodiment 1

[0043] For a certain type of solid engine attitude control system iron-based superalloy shunt ring, the center radius R of the shunt ring is 205mm, the inner diameter D = 40mm, the wall thickness t = 1.5mm, and the outer diameter d = 43mm; the forming of the iron-based superalloy shunt ring The method includes the following steps:

[0044] 1) Divide the iron-based superalloy shunt ring into four equal parts to form four shunt ring units 10, each shunt ring unit includes a circular arc-shaped pipe 1 and a shunt joint 9, that is, the central radius R of the circular arc-shaped pipe is 205mm, Inner diameter D=40mm, wall thickness t=1.5mm, outer diameter d=43mm, such as figure 1 shown.

[0045] 2) The circular arc-shaped pipe 1 and the shunt joint 9 are processed. The annular arc-shaped pipe 1 is provided with a mounting hole 8 which is welded to the shunt joint 9. The diameter of the mounting hole 8 is D. 2 = 0.6 × d; and a finishing allowance of 3 mm is left on the butt weldin...

Embodiment 2

[0061] For a certain type of solid engine attitude control system iron-based superalloy shunt ring, the center radius R of the shunt ring is 205mm, the inner diameter D = 40mm, the wall thickness t = 1.5mm, and the outer diameter d = 43mm; the forming of the iron-based superalloy shunt ring The method includes the following steps:

[0062] 1) Divide the iron-based superalloy shunt ring into three equal parts to form three shunt ring units, each shunt ring unit includes a circular arc tube and a shunt joint, that is, the central radius R of the circular arc tube is 205mm, and the inner diameter D = 40mm, wall thickness t=1.5mm, outer diameter d=43mm.

[0063] 2) Process the circular arc-shaped pipe and the shunt joint. The circular arc-shaped pipe is provided with a mounting hole for butt welding with the shunt joint. The diameter of the mounting hole is D. 2 = 0.8 × d; and a finishing allowance of 5 mm is left on the butt welding end faces of the two ends of the circular arc-...

Embodiment 3

[0079] For the iron-based superalloy shunt ring of a certain type of solid engine attitude control system, the center radius R of the shunt ring is 220mm, the inner diameter D=54mm, the wall thickness t=3mm, and the outer diameter d=60mm; the forming method of the iron-based superalloy shunt ring Including the following steps:

[0080] 1) Divide the iron-based superalloy shunt ring into four equal parts to form four shunt ring units, each shunt ring unit includes a circular arc tube and a split joint, that is, the central radius R of the circular arc tube is 220 mm, and the inner diameter D = 54mm, wall thickness t=3mm, outer diameter d=60mm.

[0081] 2) Process the circular arc tube and the shunt joint. The circular arc tube has a mounting hole welded with the shunt joint. The diameter of the mounting hole is D 2 = 0.7×d; and there is a finishing allowance of 4 mm on the butt welding end faces of the circular arc tubes, the wall thickness t error of the circular arc tubes is...

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Abstract

The invention discloses a forming method for an iron-based high-temperature alloy distributing ring. The forming method comprises the steps that a distributing ring is equally divided into N parts to form N distributing ring units, and each distributing ring unit comprises a circular ring arc-shaped pipe and distributing connectors; the circular ring arc-shaped pipes and the distributing connectors are machined; the distributing connectors are welded to the circular ring arc-shaped pipes to form the distributing ring units; the welded distributing ring units are sequentially subjected to X-ray flaw detection and stress relief annealing treatment; the N distributing ring units are subjected to butt welding to form a distributing ring blank; and after the distributing ring blank is sequentially subjected to X-ray flaw detection and stress relief annealing treatment, the iron-based high-temperature alloy distributing ring is formed. The pressure-bearing capacity of the distributing ring formed by welding the N circular ring arc-shaped pipes is high, a water pressure strength test is conducted with the pressure which is 1.5 times of the working pressure, and leakage and abnormal deformation are avoided; and in addition, the formed distributing ring is good in anti-fatigue performance and formed appearance quality, fatigue tests are conducted for 5000 times according to the working pressure, and abnormal deformation and breakage do not occur.

Description

technical field [0001] The invention belongs to the field of processing high temperature, pressure and high gas shunt rings of a solid rocket attitude control power system, and particularly relates to a forming method of an iron-based superalloy shunt ring. Background technique [0002] With the rapid development of aerospace defense technology, the requirements for long-term storage, maintenance-free, rapid response, safety and non-toxicity of aircraft systems are getting higher and higher. The liquid attitude control power system has toxic propellants, refilling before use, and short storage period, which restrict the performance of the equipment system. If the solid attitude control is used instead of the liquid attitude control, the performance of the equipment system will be greatly improved. In addition, the liquid attitude control power system is complex in structure and expensive, and the use of solid attitude control instead of liquid attitude control is also one of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 韩庆波吴钦徐明亮初敬生余天雄
Owner 湖北三江航天江北机械工程有限公司
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