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Manufacturing method of concave metal mesh of fairing

A technology of metal mesh grid and manufacturing method, which is applied to electrical components, magnetic field/electric field shielding and other directions, can solve the problems of complex process of concave metal mesh of fairing, difficult to guarantee spherical surface uniformity, difficult to control process parameters, etc., so as to avoid product damage. , the effect of saving production costs and improving flexibility

Pending Publication Date: 2022-02-15
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of the existing fairing concave metal mesh, such as complicated process, high equipment cost, difficult control of process parameters, difficult guarantee of spherical surface uniformity, difficult glue coating and exposure, and provides a kind of fairing concave metal mesh How the grid is made

Method used

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  • Manufacturing method of concave metal mesh of fairing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Making the concave metal mesh grid of the fairing with a curvature R=116mm and a sagittal height of 80.5mm includes the following steps:

[0031] 1) Soak the degreased cotton with a mixture of alcohol and ether with a mass ratio of 3:7 to scrub the fairing to remove surface impurities, oil stains and auxiliary materials;

[0032] 2) Fix the fairing after cleaning in step 1) on the rotary coating machine, with the concave side facing upwards, drop the positive photoresist on the concave surface of the fairing with a dropper, first rotate the fairing manually to make the positive photoresist evenly Fill the entire concave surface of the fairing, and then start the rotary coating machine for automatic spin coating, the speed is 1000r / s, and the time is 2min;

[0033] 3) Put the fairing coated with photoresist on the concave surface of step 2) into a baking oven and take it out after baking at 80°C for 30 minutes;

[0034] 4) Install the fairing after baking in step 3) on ...

Embodiment 2

[0039] Making the concave metal grid of the fairing with a curvature R=132mm and a sagittal height of 106mm includes the following steps:

[0040] 1) Soak the degreased cotton with a mixture of alcohol and ether with a mass ratio of 4:6 and scrub the fairing to remove surface impurities, oil stains and auxiliary materials;

[0041] 2) Fix the fairing after cleaning in step 1) on the rotary coating machine, with the concave side facing upwards, drop the positive photoresist on the concave surface of the fairing with a dropper, first rotate the fairing manually to make the positive photoresist evenly Fill the entire concave surface of the fairing, and then start the rotary coating machine for automatic spin coating, the speed is 1200r / s, and the time is 1min;

[0042] 3) Put the fairing coated with photoresist on the concave surface of step 2) into a baking oven and take it out after baking at 80°C for 25 minutes;

[0043] 4) Install the fairing after baking in step 3) on the c...

Embodiment 3

[0048] Making the concave metal mesh grid of the fairing with a curvature R=125mm and a sagittal height of 95.5mm includes the following steps:

[0049] 1) Soak the degreased cotton with a mixture of alcohol and ether with a mass ratio of 3:6 and scrub the fairing to remove surface impurities, oil stains and auxiliary materials;

[0050] 2) Fix the fairing after cleaning in step 1) on the rotary coating machine, with the concave side facing upwards, drop the positive photoresist on the concave surface of the fairing with a dropper, first rotate the fairing manually to make the positive photoresist evenly Fill the entire fairing concave surface, and then start the rotary coating machine for automatic spin coating, the speed is 1500r / s, and the time is 1.5min;

[0051] 3) Put the fairing coated with photoresist on the concave surface of step 2) into a baking oven and take it out after baking at 100°C for 20 minutes;

[0052] 4) Install the fairing after baking in step 3) on the c...

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Abstract

The invention provides a manufacturing method of a concave metal mesh of a fairing. The technical problems that an existing concave metal mesh of the fairing is complex in process, high in equipment cost, difficult in process parameter control, difficult in spherical surface uniformity guarantee and difficult in gluing and exposure are solved. Comprising the following steps: 1) soaking degreased cotton with a mixed solution of alcohol and diethyl ether to clean the concave surface of the fairing; (2) fixing a fairing on a rotary gluing machine, dripping the positive photoresist on the concave surface of the fairing by using a dropper, manually rotating the fairing, and then starting the rotary gluing machine for spin coating; (3) putting the fairing into a baking oven to be baked and then taking out; (4) installing the fairing on concentric scanning laser direct writing exposure equipment, starting centering, and starting longitude and latitude scribing; (5) immersing the fairing in a developing solution to be developed for 50-60 S; (6) placing the fairing in a vacuum chamber, and after the fairing is bombarded with an ion source, evaporating a chromium layer and a gold layer sequentially; and (7) dripping acetone to the concave face of the fairing, scrubbing the fairing, and obtaining the fairing concave face metal mesh.

Description

technical field [0001] The invention belongs to the technical field of optical instruments and parts manufacturing, and in particular relates to a method for manufacturing a concave metal grid of a fairing. Background technique [0002] With the continuous development of infrared technology and photoelectric countermeasure technology, high requirements are put forward for the radar stealth performance of infrared windows. Prepare a layer of metal grid on the fairing that can not only efficiently transmit infrared light, but also shield radar waves. The metal grid has the function of shielding electromagnetic waves, and at the same time transmits infrared light and visible light. At the same time, the Radar Cross Section (RCS) is effectively reduced to realize the radar stealth of the aircraft. Compared with the flat optical window, the fairing has the characteristics of high sag height and difficult fabrication of the concave metal grid. [0003] Because it involves the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
CPCH05K9/0086
Inventor 古华梁雪驰王一坚李鹏陈志航吕一帆
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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