Preparation process of large titanium alloy air inlet for missiles

A technology for preparation process and air intake channel, which is applied in the field of titanium alloy casting, can solve problems such as easy deformation of castings, cracks that cannot be quickly removed in a closed structure, and cracks formed on the surface of the inner cavity of the air intake channel, so as to ensure complete mold filling and process The method is novel and the effect is feasible

Inactive Publication Date: 2018-08-31
LUOYANG SUNRUI TI PRECISION CASTING
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the castings in the investment casting precision casting process are prone to deformation due to the slender characteristics of the titanium alloy inlet in the prior art, resulting in the formation of cracks on the surface of the inner cavity of the inlet , and because its closed structure cannot quickly remove cracks, it cannot reach the required technical state. A preparation method for a titanium alloy inlet is provided.

Method used

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  • Preparation process of large titanium alloy air inlet for missiles
  • Preparation process of large titanium alloy air inlet for missiles
  • Preparation process of large titanium alloy air inlet for missiles

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Embodiment Construction

[0026] Large-scale thin-walled inlet castings for air-to-ground missiles (overall size: 365×189×1965mm, about 65% of the casting area is 3mm thin-walled structure, see figure 1 ) development process as an example.

[0027] A method for preparing a large-scale titanium alloy inlet for missiles, comprising the following steps:

[0028] Step 1. Inlet split structure design: According to the structural characteristics of the large titanium alloy air inlet for the missile, the partition of the large titanium alloy air inlet for the missile is divided into a main body and a piece, such as Figure 2-3 , the abdominal cover plate of the air inlet is a sheet body, and the rest are the body. After the division, the body and the sheet body are both open structures, which realizes the realization of the post-processing process of titanium alloy casting. The body and the sheet body are both open structures, which is conducive to the Realization of post-casting treatment process;

[0029]...

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Abstract

The invention relates to a preparation process of a large titanium alloy air inlet for missiles. The preparation process cannot be realized by adopting the production of conventional equipment of graphite type titanium alloy castings and a traditional titanium alloy casting technique. The graphite coating scheme of the preparation process is adopted, and the advantages of titanium alloy investmentcasting are combined, so that the mold filling integrity of missile castings is effectively guaranteed, the surface roughness of the missile titanium alloy castings can reach 6.3 micrometers, and thefeasible titanium alloy casting technique of the missile castings is realized. By adopting the laser welding scheme of the preparation process, the feasibility of an air inlet opening casting technique is realized, and internal cracks of an air inlet mold cavity are effectively avoided.

Description

technical field [0001] The invention relates to the field of titanium alloy casting and the field of laser welding of titanium alloy structural parts, in particular to a preparation process method of a titanium alloy air inlet. Background technique [0002] At present, the titanium castings of large air inlets used in missiles tend to be slender, which doubles the difficulty of scientific research and production for titanium alloy casting. There are currently two relatively mature production methods for titanium alloy castings, one is investment casting and the other is machining graphite casting. The slender characteristics of large air inlet castings make the castings prone to deformation and other problems during the investment casting process. The titanium alloy castings of investment casting can meet the requirements of the air inlet for the surface roughness of the castings, but the wax mold deformation Both the investment casting process and the deformation of the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22C22F1/18C23G1/10B23P15/00
CPCB22C9/22B23P15/00C22F1/183C23G1/106
Inventor 孙宏喆徐群张志正马俊飞刘茵琪
Owner LUOYANG SUNRUI TI PRECISION CASTING
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