A precise electroforming method for making the subtle structure of a high frequency corrugation feed horn

A feed horn and micro-structure technology, which is applied in the field of precision and ultra-precision device processing, can solve the difficulty in manufacturing high-frequency corrugated feed horn micro-structure, the inability to uniformly deposit a cavity-free electroforming layer, and the difficulty in processing the inner corrugated micro-structure. and other problems, to achieve uniform electroforming deposition, ensure low roughness, and improve reliability.

Active Publication Date: 2014-11-19
SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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Problems solved by technology

[0006] The purpose of the present invention is to provide a precision electroforming method for making the microstructure of the high-frequency corrugated feed horn, so as to solve the problem of difficult processing of the inner corrugated microstructure with high aspect ratio of the high-frequency corrugated feed horn produced by the traditional technology
[0007] The second purpose of the present invention is to provide a precision electroforming method for making the fine structure of the high-frequency corrugated feed horn, so as to s

Method used

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  • A precise electroforming method for making the subtle structure of a high frequency corrugation feed horn
  • A precise electroforming method for making the subtle structure of a high frequency corrugation feed horn
  • A precise electroforming method for making the subtle structure of a high frequency corrugation feed horn

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Embodiment 1

[0038] The steps of preparing the high-frequency corrugated feed horn in this embodiment are as follows: Figure 7 As shown, specifically:

[0039] Step 1: Make the electroforming core mold of the feed speaker. Produced by machining or casting figure 1 The electroformed mandrel for the feed horn shown in figure 2 shown. in, figure 1Among them, the horn teeth 101 are 0.24mm wide, the horn grooves 102 are 0.24mm wide, the horn grooves 102 are 0.37mm deep, the number of teeth is 80, the horn input radius is 0.75mm, the output radius is 4.33mm, the total length of the horn is 47.2mm, and the corrugated feed horn frequency is 183GHz. In this embodiment, the mandrel is made of 6061 aluminum alloy material, such as figure 2 As shown, the size of the mandrel groove 201 is copied from the trumpet tooth 101, with a width of 0.24mm and a depth of 0.37mm. The size of the mandrel tooth 202 is copied from the horn groove 102, with a width of 0.24mm.

[0040] Step 2: Perform surface ...

Embodiment 2

[0055] In this embodiment, except for the size of the feed horn and the electroforming mandrel described below, and the manufacturing materials of some structures, the materials, steps and manufacturing methods of the remaining parts are the same as those of Embodiment 1, and the different parts as follows:

[0056] In step 1, create figure 1 The electroformed mandrel for the feed horn shown in , where, figure 1 The dimensions of the feed horn are as follows: the horn teeth 101 are 0.27mm wide, the horn groove 102 is 0.27mm wide, the groove depth is 0.45mm, the number of teeth is 80, the horn input radius is 2.71mm, the output radius is 20.85mm, the total length of the horn is 76.23mm, and the corrugated feed The horn frequency is 150GHz.

[0057] In this embodiment, the mandrel is made of AZ40M magnesium alloy material, such as figure 2 The size of the mandrel slot 201 shown is copied from the trumpet tooth 101, with a width of 0.27mm and a depth of 0.45mm. The size of th...

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Abstract

The invention provides a precise electroforming method for making the subtle structure of a high frequency corrugation feed horn. The feed horn is obtained in the following way: an electroforming mandrel of the feed horn is made according to the structure form of the inner chamber of the corrugation feed horn; after the treatment that the surface of the mandrel is additionally coated with an anti-corrosion layer, with the combined action of ways of pictographic anode, cathode rotation, plating solution jet flow, bidirectional pulse, physical polishing and grinding, and so on, the mandrel is precisely electroformed with copper so that a feed horn electroformed piece is obtained; the demoulding operation of the electroformed piece and the mandrel is performed so that a feed horn is obtained. With the precise electroforming method of the invention, the problem that the inner corrugations, with a high depth-to-width ratio, of a high frequency corrugation feed horn are difficult to process is solved. With the precise electroforming technology, a high frequency corrugation feed horn with low surface roughness and without a chamber in the annual teeth can be obtained. The precise electroforming method greatly enhances the structure strength of a feed horn manufactured with the electroforming technology. At the same time, the low surface roughness of the horn surface effectively enhances the transmission reliability of microwave signals.

Description

technical field [0001] The invention relates to the technical field of precision and ultra-precision device processing, in particular to a precision electroforming method for making a microstructure of a high-frequency corrugated feed horn. Background technique [0002] With the rapid development of space technology, the frequency band of meteorological microwave imaging detection instruments has expanded from visible light and infrared to microwave. Whether it is a military meteorological satellite that obtains complex environmental information on the future battlefield in modern information warfare, or a civil meteorological satellite that conducts all-weather and all-weather remote sensing observations of the earth's atmosphere from space outside the atmosphere, in order to accurately obtain various detection All elements need to be equipped with a high-performance microwave imaging detector. The antenna feed system of high-performance microwave imaging detectors often u...

Claims

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Application Information

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IPC IPC(8): C25D1/00
Inventor 符容刘兰波王立春倪忠标
Owner SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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