Upper cap forming method and device for negative angle collector of heavy rocket engine

A rocket engine and collector technology, which is applied to engine components, forming tools, mechanical equipment, etc., can solve the problems of difficult forming, high deformation resistance of room temperature forming, and the inability to use integral forming on the upper cover of negative angle collectors of heavy rocket engines. To achieve the effect of improving the forming accuracy

Active Publication Date: 2018-02-16
CAPITAL AEROSPACE MACHINERY +1
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Problems solved by technology

[0007] (4) The wall thickness of the product is increased to 6mm, and the deformation resistance of room temperature forming is large, and forming is difficult
[

Method used

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  • Upper cap forming method and device for negative angle collector of heavy rocket engine
  • Upper cap forming method and device for negative angle collector of heavy rocket engine
  • Upper cap forming method and device for negative angle collector of heavy rocket engine

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[0041] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0042] Such as figure 1 (a), figure 1 (b) shows the structure diagram of the upper cover of the negative angle collector of the heavy rocket engine. The upper cover of the negative angle collector of the heavy rocket engine is a disc structure with a semicircular edge cross-sectional shape. The angle between the port plane of the upper cover of the device is 15°, and there is a flanging hole on the edge;

[0043] A forming device for the upper cover of the negative angle collector of a heavy rocket engine, such as Figure 4 (a), Figure 4 As shown in (b), it includes: lower mold 1, upper mold 4, indenter 5, core mold 6; upper mold 4 and lower mold 1 are opened with a surface that matches the theoretical shape of the upper cover of the collector; preformed blank 2 Placed on the lower mold 1, the core mold 6 is connected to the lower mold 1 by bolts 7; the lower...

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Abstract

The invention discloses an upper cap forming method and device for a negative angle collector of a heavy rocket engine and solves the problem of forming the upper cap of the negative angle collector,and can achieve integral forming of the upper cap of the negative angle collector. The welding step is reduced, and the reliability of parts is improved. The forming device comprises an upper mold, alower mold, a pressure head and a core mold. Molded surfaces matched with the upper cap of the collector in shape are processed on the upper mold and the lower mold The upper mold, the lower mold, thepressure head and the mold core form a closed cavity for loading solid particles. The mold core extrudes the solid particles at a high temperature to generate a pressure, and a blank under the actionof the pressure is attached to the upper and lower molds to form. By taking the heat-resistant particle medium as a pressure transfer medium, the problems of heat transfer and seal ion a hot state inner high pressure expanding process of a tubular product are solved.

Description

technical field [0001] The invention belongs to the technical field of plastic processing, and relates to a method and a device for forming an upper cover of a negative angle collector. Background technique [0002] The upper cover of the collector is an important part of the rocket engine. The working environment is low temperature, high pressure, strong vibration, and the working environment is very harsh. Therefore, the raw material is nickel-based superalloy GH4169, which has high strength at room temperature. The products in the active model are formed by ordinary deep drawing process. Due to the high strength of the material, the parts rebound greatly after forming, resulting in out-of-tolerance dimensions and a very high scrap rate. [0003] With the improvement of rocket engine carrying capacity, its requirements for product reliability are getting higher and higher. The upper cover of the collector of the heavy-duty rocket engine is relatively large, and the stru...

Claims

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Application Information

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IPC IPC(8): B21D53/84B21D37/10B21D26/00
CPCB21D26/00B21D37/10B21D53/84
Inventor 王永铭祝世强徐坤和李杰张文忠贾春莉袁楠康洪泽张超赵良郭建军
Owner CAPITAL AEROSPACE MACHINERY
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