Method for manufacturing high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface
A technology of a sandwich structure and a manufacturing method, which is applied to coatings, pretreatment surfaces, and devices for applying liquid to surfaces, etc., can solve problems such as difficulty in meeting the size requirements of the reflective surface and large size of the reflective surface.
Inactive Publication Date: 2014-02-05
CHINA ELECTRONICS TECH GRP NO 39 RES INST
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Problems solved by technology
The existing method of surface metallization of the emitting surface mainly adopts the method of electroplating or vacuum plating. Since electroplating or vacuum plating requires special tooling equipment, and with the development of aerospace technology, the size of the reflective surface is getting larger and larger. The existing electroplating Or vacuum plating tooling equipment has been difficult to meet the size requirements of the reflective surface
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Embodiment Construction
[0015] Describe the present invention below in conjunction with specific embodiment:
[0016] In this embodiment, the method for manufacturing the reflective surface of the high-precision carbon fiber aluminum honeycomb sandwich structure adopts the following steps:
[0017] Step 1: Manufacture the skin mold according to the design drawings of the reflective surface. The mold is the basis of composite material molding, and the mold material, structural form, processing accuracy, etc. directly affect the quality of the reflective surface. Since the mold is subjected to temperature changes from room temperature to about 150°C during the molding process. The thermal expansion and cold contraction of the mold body material will inevitably cause a certain internal stress on the part. Based on comprehensive analysis and calculation and referring to the experience of thermal deformation of molds in the past, nodular cast iron (QT600-3) was used to manufacture molds, and its linear ...
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Abstract
The invention provides a method for manufacturing a high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface. The method comprises the steps of die manufacture, metal spraying, front and back coating and forming, sandwich structure forming, reflecting surface forming through assembly and the like, so that the high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface is manufactured, wherein surface metallization is achieved through the technological method of metal spraying, and the problem that the requirement for surface metallization of the reflecting surface with a large size can not be satisfied through traditional electroplating or vacuum plating is solved. According to the technological parameters of metal spraying in the method, the thickness of metal is controlled between 60 micrometers and 70 micrometers after metal spraying is conducted twice and the thickness of the metal is controlled between 80 micrometers and 90 micrometers after metal spraying is conducted three times, so that the phenomenon that carbon fiber epoxy prepreg seeps to the surface of a metal layer due to the fact that the spraying thickness is extremely small is avoided, and the surface quality of a product and the actual precision of an antenna are prevented from being influenced.
Description
technical field [0001] The invention relates to the technical field of reflective surface manufacturing, in particular to a method for manufacturing a high-precision carbon fiber aluminum honeycomb sandwich structure reflective surface. Background technique [0002] With the development of aerospace technology, developed countries developed the molding technology of carbon fiber composite materials in the early 1970s. At present, the structural materials of spaceborne high-precision antennas are dominated by carbon fiber composite materials (CFRP). Among ground equipment, millimeter-wave and sub-millimeter-wave high-precision, high-stability parabolic antennas of various calibers have also been successfully used in developed countries. It can be said that the emergence of carbon fiber composite materials and the research on application technology have caused a revolution in the structure, design and molding process of high-precision antennas. At present, the existing resear...
Claims
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IPC IPC(8): H01Q15/14B05D1/38B05D3/00
Inventor 吴利英张文涛赵泓滨高建军刘世海张秋实万人民刘晓军
Owner CHINA ELECTRONICS TECH GRP NO 39 RES INST