Integrated manufacturing method for pintle type head interlayer shell of airspace engine

A technology of aerospace engine and manufacturing method, applied in the directions of additive manufacturing, process efficiency improvement, additive processing, etc., can solve the problems of easy cracking, long production cycle, metal shell failure, etc., and achieve dense structure and mechanical properties. Excellent, performance-enhancing effect

Inactive Publication Date: 2020-06-12
XIAN SPACE ENGINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has problems such as many processes, large investment in tooling and equipment, long production cycle, high technical difficulty, poor performance stability, and difficulty in ensuring reliability.
In particular, complex metal shells with thin walls and regenerative cooling channel structures are connected by multiple parts by welding. shell failure

Method used

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  • Integrated manufacturing method for pintle type head interlayer shell of airspace engine
  • Integrated manufacturing method for pintle type head interlayer shell of airspace engine
  • Integrated manufacturing method for pintle type head interlayer shell of airspace engine

Examples

Experimental program
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Effect test

specific Embodiment

[0043] (1) Draw in professional drawing software such as figure 1 The shell member with a thin-walled interlayer and complex regenerative cooling channel structure is shown. The shell is distributed with 88 closed conformal cooling channels. The head contains 24 shunt holes. The diameters are Φ132mm and Φ62mm respectively, and the height is 131mm.

[0044] (2) The forming direction of the selected metal shell and the added technological support such as figure 2 shown.

[0045] (3) According to the characteristics of the TC4 titanium alloy material, set the processing parameters of the shell, solid support, and grid support for laser selective melting and forming, and slice the model with the added support. After slicing, obtain the processing code and import it into the forming equipment middle. Among them, shell processing parameters: laser power 300~340W, scanning speed 900~1100mm / s, scanning distance 0.08~0.12mm, phase angle 67° / 105°layer thickness 30~40μm; physical sup...

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Abstract

The invention relates to an integrated manufacturing method for a pintle type head interlayer shell of an airspace engine. A three-dimensional model of the metal shell is set up, and the STL formattedfile of the three-dimensional model is guided into a Magics additive manufacturing auxiliary software platform; according to the structure characteristics of the metal shell, the forming direction and the placement position are confirmed, and a process support is designed and added; TC4 titanium alloy laser selective melting forming processing technological parameters are input slice software, and the model added with the support is subjected to slicing treatment; forming is carried out under protection of inert gas; after forming is finished, floating powder is cleared away, and the shell issubjected to heat treatment; a substrate and the shell are linearly cut and separated, the auxiliary support is removed, and finishing and grinding are carried out; and the shell is subjected to surface treatment. By means of the method, the pintle type head interlayer shell of the airspace engine are designed and manufactured according to the additive manufacturing process technology, a shell component is integrally manufactured through the metal additive manufacturing method, and the manufacturing quality reliability of the pintle type head interlayer shell of the airspace engine is improved.

Description

technical field [0001] The invention belongs to a manufacturing method of a pinpin type head sandwich shell, and relates to an overall manufacturing method of a pinpin type head sandwich shell of an aerospace engine, in particular to a metal shell with a thin-walled interlayer and a complex regenerative cooling structure. Laser selective melting and additive manufacturing integrated processing method. Background technique [0002] Aerospace engine pintle head interlayer housing has thin-walled interlayer, metal shell with complex regenerative cooling channel structure, which has the characteristics of light weight, compact structure, high degree of integration, etc. It is often used in engine fuel and oxidizer with interlayer cooling in aerospace Atomization mixing system. Limited by the traditional processing and manufacturing technology, at present, it is difficult to realize the integrated forming of the metal shell with thin-walled interlayer and complex regenerative co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F5/10B22F3/24B33Y10/00B33Y40/20
CPCB22F5/10B22F3/24B33Y10/00B33Y40/00B22F2003/248B22F2003/247B22F10/00B22F10/66B22F10/28B22F10/64B22F10/36B22F10/366B22F10/47B22F10/32B22F10/80Y02P10/25
Inventor 李护林杨欢庆彭东剑王琳白静雷玥
Owner XIAN SPACE ENGINE CO LTD
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