CN103560328A - Method for manufacturing high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface - Google Patents
Method for manufacturing high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface Download PDFInfo
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- CN103560328A CN103560328A CN201310512004.3A CN201310512004A CN103560328A CN 103560328 A CN103560328 A CN 103560328A CN 201310512004 A CN201310512004 A CN 201310512004A CN 103560328 A CN103560328 A CN 103560328A
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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
The present invention relates to reflecting surface manufacturing technology field, be specially a kind of high accuracy carbon fiber aluminium honeycomb sandwich construction reflecting surface manufacture method.
Background technology
Along with the development of space technology, developed country has just developed the forming technique of carbon fibre composite at early seventies, and the structural material of current spaceborne high-precision antenna has been that carbon fibre composite (CFRP) rules all the land.In ground installation, the parabolic antenna ，Ye Yi developed country of the millimeter wave of various bores, submillimeter wave high accuracy, high stability successfully uses.Can say that the appearance of carbon fibre composite and the research of application technology have caused a change of high-precision antenna structure, design and moulding process.At present domestic and international existing research shows, advanced composite material (ACM) is manufactured antenna reflector except the tabular CFRP of very undersized use, nearly all uses sandwich.Be characterized in that quality is light, bending rigidity is high.Carbon fibre composite belongs to semi-conducting material, in certain frequency range, by self completing the electromagnetic reflection function of antenna, but due to the increase of reflection loss, lose the use value of reflection function at high band more, reflecting surface requires to carry out surface metalation processing.Existing surface of emission surface metalation processing method mainly adopts the method for plating or Vacuum Deposition, due to the tooling device of electroplating or Vacuum Deposition need to be special, and along with the development of space technology, reflecting surface size is increasing, and the tooling device of existing plating or Vacuum Deposition has been difficult to meet reflecting surface dimensional requirement.
Summary of the invention
The technical problem solving
The problem existing for solving prior art, the present invention proposes a kind of high accuracy carbon fiber aluminium honeycomb sandwich construction reflecting surface manufacture method, by adopting spray metal transfer techniques to complete the surface metalation of composite material antenna reflective face.Adopt not only adhesion-tight of metal level that this technology forms, and smooth smooth, can meet antenna electric performance requirement completely.
Technical scheme
Technical scheme of the present invention is:
Described a kind of high accuracy carbon fiber aluminium honeycomb sandwich construction reflecting surface manufacture method, is characterized in that: adopt following steps:
Step 1: according to reflector design drawing, adopt spheroidal graphite cast-iron casting covering die, covering die comprises front covering die and rear covering die, covering die surface roughness Ra≤1.6mm wherein, covering die is air tight under 0.5Mpa pressure, and die face precision is less than 1/3 of reflector type surface accuracy;
Step 2: covering die is carried out to preliminary treatment: comprise cleaning covering die, covering die is carried out to oil removal treatment and coating release agent on covering die;
Step 3: spray transfer membrane and dry on front covering die; And then coating aluminum or metallic zinc on front covering die, the technological parameter of spray metal is compressed air pressure 0.5～0.6MPa, dissolved acetylene pressure 0.1～0.15Mpa, gaseous oxygen atmospheric pressure 0.7～0.75MPa, spray metal sprays three times altogether, wherein the spray gun translational speed of first pass spraying is 20～25mm/s, and the spray gun translational speed of second time spraying is 60～70mm/s, and during spray metal, the distance of spray gun and mould is 300～400mm;
Step 4: brush J47B glue or paste J47C glued membrane on front covering die and rear covering die, adopt carbon fiber epoxy prepreg covering and rear covering before front covering die and rear covering die upper berth are covered; Again front covering die and the encapsulation of rear covering die, vacuum hotpressing are solidified; Finally by front covering and rear covering demoulding finishing;
Step 5: clean the splicing face of front covering and rear covering and dry, then pasting J47C glued membrane; Before the aluminium honeycomb after cutting and built-in fitting being sticked on front covering die on covering; Covering after then pasting on aluminium honeycomb; Front covering die encapsulation, vacuum hotpressing are solidified; Again by the carbon fiber aluminium honeycomb sandwich construction demoulding finishing obtaining, and at carbon fiber aluminium honeycomb sandwich construction surface spraying three anti-paints, finally the assembling of carbon fiber aluminium honeycomb sandwich construction is formed to reflecting surface.
Beneficial effect
The present invention adopts the process of spray metal to realize surface metalation, has overcome traditional plating or Vacuum Deposition and can not meet the problem that large scale reflecting surface surface metalation requires.According to the spray metal technological parameter in the present invention, spray twice thickness and can be controlled in 60～70 μ m, spray three times thickness and can be controlled in 80～90 μ m, avoid the excessively thin carbon fiber epoxy prepreg that causes of coating thickness to be penetrated into layer on surface of metal, and affected the available accuracy of product surface quality and antenna.
Embodiment
Below in conjunction with specific embodiment, the present invention is described:
The method of manufacturing high accuracy carbon fiber aluminium honeycomb sandwich construction reflecting surface in the present embodiment adopts following steps:
Step 1: according to reflector design drawing, manufacture covering die.Mould is the basis of composite material forming, and mold materials, version, machining accuracy etc. directly affect the quality of reflecting surface.Because mould in forming process will bear from the variations in temperature of room temperature to 150 ℃ left and right.The thermal expansion of die body material and cold contraction, will inevitably make product produce certain internal stress.Comprehensive analytical calculation is also used for reference the experience of mold hot distortion in the past, has adopted spheroidal graphite cast-iron (QT600-3) mfg. moulding die, and its coefficient of linear expansion α l (20-200 ℃) is about 9.0 * 10
-6/ ℃.Covering die comprises front covering die and rear covering die, covering die surface roughness Ra≤1.6mm, during casting, should reduce the appearance of sand holes, to guarantee surface accuracy, the surface roughness after Mould Machining, do not allow penetrability sand holes to guarantee the air-tightness of mould, guarantee that mould is air tight under 0.5Mpa pressure.Die face precision RMS(RootMean Square) be less than 1/3 of reflector type surface accuracy, if reflector type surface accuracy is 0.12mm, die face precision RMS should be less than 0.03mm.
Step 2: covering die is carried out to preliminary treatment: comprise cleaning covering die, covering die is carried out to oil removal treatment and coating release agent on covering die;
Step 3: spray transfer membrane and dry on front covering die; And then coating aluminum or metallic zinc on front covering die, the technological parameter of spray metal is compressed air pressure 0.5～0.6MPa, dissolved acetylene pressure 0.1～0.15Mpa, gaseous oxygen atmospheric pressure 0.7～0.75MPa, spray metal sprays three times altogether, wherein the spray gun translational speed of first pass spraying is 20～25mm/s, and the spray gun translational speed of second time spraying is 60～70mm/s, and during spray metal, the distance of spray gun and mould is 300～400mm; During spray metal from the close-by examples to those far off, from left to right evenly spraying,
Step 4: brush J47B glue or paste J47C glued membrane on front covering die and rear covering die, adopt carbon fiber epoxy prepreg covering and rear covering before front covering die and rear covering die upper berth are covered; Again front covering die and the encapsulation of rear covering die, vacuum hotpressing are solidified; Finally by front covering and rear covering demoulding finishing;
Step 5: clean the splicing face of front covering and rear covering and dry, then pasting J47C glued membrane; Before the aluminium honeycomb after cutting and built-in fitting being sticked on front covering die on covering; Covering after then pasting on aluminium honeycomb; Front covering die encapsulation, vacuum hotpressing are solidified; Again by the carbon fiber aluminium honeycomb sandwich construction demoulding finishing obtaining, and at carbon fiber aluminium honeycomb sandwich construction surface spraying three anti-paints, finally the assembling of carbon fiber aluminium honeycomb sandwich construction is formed to reflecting surface.
Claims (1)
1. a high accuracy carbon fiber aluminium honeycomb sandwich construction reflecting surface manufacture method, is characterized in that: adopt following steps:
Step 1: according to reflector design drawing, adopt spheroidal graphite cast-iron casting covering die, covering die comprises front covering die and rear covering die, covering die surface roughness Ra≤1.6mm wherein, covering die is air tight under 0.5Mpa pressure, and die face precision is less than 1/3 of reflector type surface accuracy;
Step 2: covering die is carried out to preliminary treatment: comprise cleaning covering die, covering die is carried out to oil removal treatment and coating release agent on covering die;
Step 3: spray transfer membrane and dry on front covering die; And then coating aluminum or metallic zinc on front covering die, the technological parameter of spray metal is compressed air pressure 0.5～0.6MPa, dissolved acetylene pressure 0.1～0.15Mpa, gaseous oxygen atmospheric pressure 0.7～0.75MPa, spray metal sprays three times altogether, wherein the spray gun translational speed of first pass spraying is 20～25mm/s, and the spray gun translational speed of second time spraying is 60～70mm/s, and during spray metal, the distance of spray gun and mould is 300～400mm;
Step 4: brush J47B glue or paste J47C glued membrane on front covering die and rear covering die, adopt carbon fiber epoxy prepreg covering and rear covering before front covering die and rear covering die upper berth are covered; Again front covering die and the encapsulation of rear covering die, vacuum hotpressing are solidified; Finally by front covering and rear covering demoulding finishing;
Step 5: clean the splicing face of front covering and rear covering and dry, then pasting J47C glued membrane; Before the aluminium honeycomb after cutting and built-in fitting being sticked on front covering die on covering; Covering after then pasting on aluminium honeycomb; Front covering die encapsulation, vacuum hotpressing are solidified; Again by the carbon fiber aluminium honeycomb sandwich construction demoulding finishing obtaining, and at carbon fiber aluminium honeycomb sandwich construction surface spraying three anti-paints, finally the assembling of carbon fiber aluminium honeycomb sandwich construction is formed to reflecting surface.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162995A (en) * | 2014-08-08 | 2014-11-26 | 西安拓飞复合材料有限公司 | Manufacturing method for carbon fiber antenna surface |
| CN104162994A (en) * | 2014-08-08 | 2014-11-26 | 西安拓飞复合材料有限公司 | Manufacture method of carbon fiber parabolic antenna |
| CN104767035A (en) * | 2015-04-20 | 2015-07-08 | 中国电子科技集团公司第五十四研究所 | High-precision carbon fiber auxiliary reflection face forming method |
| CN105633590A (en) * | 2015-12-30 | 2016-06-01 | 中国电子科技集团公司第三十九研究所 | High-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface manufacturing method |
| CN107607279A (en) * | 2017-09-05 | 2018-01-19 | 深圳航天东方红海特卫星有限公司 | Light high-stiffness vibration tong |
| CN111864403A (en) * | 2020-06-30 | 2020-10-30 | 上海复合材料科技有限公司 | High-precision reflecting surface forming method |
| CN112688083A (en) * | 2020-12-04 | 2021-04-20 | 江苏新扬新材料股份有限公司 | Manufacturing method of large-size composite sandwich structure multi-interface reflecting plate |
| CN113708079A (en) * | 2021-09-02 | 2021-11-26 | 湖南航天环宇通信科技股份有限公司 | Preparation method and equipment of surface-metallized carbon fiber composite parabolic antenna |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162994A (en) * | 2014-08-08 | 2014-11-26 | 西安拓飞复合材料有限公司 | Manufacture method of carbon fiber parabolic antenna |
| CN104162995A (en) * | 2014-08-08 | 2014-11-26 | 西安拓飞复合材料有限公司 | Manufacturing method for carbon fiber antenna surface |
| CN104162994B (en) * | 2014-08-08 | 2016-06-22 | 西安拓飞复合材料有限公司 | A kind of manufacture method of carbon fiber parabola antenna |
| CN104162995B (en) * | 2014-08-08 | 2016-06-22 | 西安拓飞复合材料有限公司 | A kind of manufacture method of carbon fiber antenna surface |
| CN104767035B (en) * | 2015-04-20 | 2017-10-03 | 中国电子科技集团公司第五十四研究所 | A kind of high-precision carbon fiber subreflector forming method |
| CN104767035A (en) * | 2015-04-20 | 2015-07-08 | 中国电子科技集团公司第五十四研究所 | High-precision carbon fiber auxiliary reflection face forming method |
| CN105633590A (en) * | 2015-12-30 | 2016-06-01 | 中国电子科技集团公司第三十九研究所 | High-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface manufacturing method |
| CN105633590B (en) * | 2015-12-30 | 2018-05-04 | 中国电子科技集团公司第三十九研究所 | A kind of high-precision carbon fiber aluminum honeycomb sandwich structure reflecting surface manufacture method |
| CN107607279A (en) * | 2017-09-05 | 2018-01-19 | 深圳航天东方红海特卫星有限公司 | Light high-stiffness vibration tong |
| CN111864403A (en) * | 2020-06-30 | 2020-10-30 | 上海复合材料科技有限公司 | High-precision reflecting surface forming method |
| CN111864403B (en) * | 2020-06-30 | 2022-05-03 | 上海复合材料科技有限公司 | High-precision reflecting surface forming method |
| CN112688083A (en) * | 2020-12-04 | 2021-04-20 | 江苏新扬新材料股份有限公司 | Manufacturing method of large-size composite sandwich structure multi-interface reflecting plate |
| CN113708079A (en) * | 2021-09-02 | 2021-11-26 | 湖南航天环宇通信科技股份有限公司 | Preparation method and equipment of surface-metallized carbon fiber composite parabolic antenna |
| CN113708079B (en) * | 2021-09-02 | 2023-12-05 | 湖南航天环宇通信科技股份有限公司 | Preparation method and equipment of parabolic antenna made of surface metallized carbon fiber composite material |
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Application publication date: 20140205 |