Method for manufacturing grid rudder

A grid wing and blank technology is applied in the field of grid wing rudder manufacturing, which can solve the problems of poor integrity and complex grid wing rudder technology, and achieve the effects of light weight, good structural integrity and short production cycle.

Active Publication Date: 2017-02-01
北京普惠三航科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the complex process and poor integrity of the preparation of grid wing rudders in the prior art, and provide a method for manufacturing grid wing rudders

Method used

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  • Method for manufacturing grid rudder
  • Method for manufacturing grid rudder
  • Method for manufacturing grid rudder

Examples

Experimental program
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Effect test

Embodiment approach

[0061] According to a preferred embodiment of the present invention, the method may further include: after the superplastic forming is finished, adjusting the pressure to 1.9-2.1MPa, and maintaining the pressure for 55-60min, so as to ensure that the superplastic forming / diffusion connection The formed grid walls have better strength.

[0062] According to a preferred embodiment of the present invention, the method may further include: after the diffusion connection and the superplastic forming process are completed, unload the air pressure, cool the mold temperature to below 400°C, and cut off the gas path, from Take out the formed grid wing rudder from the mold, cut off the process edge; process the outer dimension of the grid wing rudder according to the theoretical digital model of the part, and obtain the grid wing rudder that meets the requirements.

[0063] In the present invention, unless otherwise specified, the sealing welding and the welding method are not particula...

Embodiment 1

[0067] (1) on the titanium alloy blank according to figure 1 with figure 2 Divide the solder stop coating area and the diffusion area as shown, and set the ventilation tank, pickle the titanium alloy blank with pickling solution, the pickling solution consists of 150ml nitric acid solution (concentration is 65-68% by weight), 20ml hydrofluoric acid Solution (concentration is 40% by weight) and 830ml water, pickle at 18 ℃ for 2min, wash and dry after pickling for future use, apply a layer of 2 μm of solder stop in the solder stop coating area and ventilation groove, and apply the solder stop The solder-stop coating surface of the titanium alloy plate is in contact with another titanium alloy blank, and the four sides are sealed and welded by argon arc welding, and the ventilation pipe is welded on the ventilation groove to form two different blank bags;

[0068] (2) Place 22 two kinds of different blank bags prepared by step (1) in parallel and at intervals, respectively arra...

Embodiment 2

[0074] Prepare the grid wing rudder according to the method of Example 1, the difference is that the diffusion connection is carried out under the following conditions: the pressure is 2.1MPa, the temperature is 930°C, and the time is 130min; the superplastic forming is carried out under the following conditions Carrying out: the pressure is 0.9MPa, the temperature is 930°C, and the time is 80min.

[0075] The tensile strength of the obtained grid wing rudder is 869Mpa, the yield strength is 741Mpa, and the grain size is 10.5.

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Abstract

The invention discloses a method for manufacturing a grid rudder, which relates to the field of metal processing. The method comprises the steps of (a) dividing one surface of a billet material into a plurality of stop welding flux coating areas (1) and a plurality of diffusion areas (2) which are distributed at intervals for each other, forming vent grooves, applying stop welding fluxes, then aligning with four sides of the other billet material, and sealing and welding, so as to form billet bags; (b) putting a plurality of billet bags into a mold in parallel and at intervals, respectively putting border billets on both ends of two adjacent billet bags, and making the projections of the diffusion areas (2) in billet pieces of the two adjacent billet bags keep parallel and distribute at intervals on a plane parallel to the billet bags; and (c) applying pressure to the mold, then leading air between the two adjacent billet bags, and then leading air to the vent groove (3) in the billet piece of each billet bag. The grid rudder prepared by using the method has the advantages of good integrality and high material utilization.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a method for manufacturing a grid wing rudder. Background technique [0002] Superplastic forming / diffusion bonding (SPF / DB) technology has developed rapidly since the 1970s. It utilizes the excellent elongation and good diffusion properties of metal materials with specific microstructures in the high temperature range. , by applying appropriate pressure to make the bonded part of the material undergo diffusion connection, and the separated part undergoes superplastic forming, thereby forming an overall hollow structure. This technology can be used to form complex overall structures at one time. Compared with traditional riveting and welding processes, it can effectively improve material utilization, shorten processing cycles, and reduce manufacturing costs. Therefore, titanium alloy SPF / DB technology has become an advanced lightweight manufacturing technology. This technology s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/12
CPCB23P15/12
Inventor 雷鹍刘新芹靳舜尧谢秀民刘彬王鲲鹏石玉红闫冰
Owner 北京普惠三航科技有限公司
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