Production method of oversize silicon carbide spacing reflection mirror body

A technology with super-large size and manufacturing method, applied in mirrors, installation, optics, etc., can solve problems such as weight increase and image quality degradation, and achieve the effects of reducing weight, reducing deformation errors, and improving processing efficiency

Inactive Publication Date: 2008-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Existing future space optical systems aiming at wide-band adaptability, high light weight and high-accuracy reception require super-sized optical components. In order to obtain sufficient rigidity, traditional optical materials such as optical glass are used to manufacture large-sized

Method used

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  • Production method of oversize silicon carbide spacing reflection mirror body

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Effect test

Embodiment 1

[0026] A method for manufacturing a super-large-sized silicon carbide space mirror body, the composition of which includes: optimizing the shape and size of the mirror, dividing the super-sized mirror into small-sized rough drawings, manufacturing molds and preparing The slurry is poured, and the blank is manufactured by the reaction sintering method, the blank is processed, and the blanks are connected and trimmed by brazing.

Embodiment 2

[0028] The manufacturing method of the ultra-large-sized silicon carbide space mirror body described in Embodiment 1, the division is as follows: according to the determined shape and size of the mirror, the mirror is divided as symmetrically as possible, and the division is planar division , each component contains as many identical shape elements or components as possible.

Embodiment 3

[0030] In the manufacturing method of the ultra-large-sized silicon carbide space mirror body described in Example 1, in the mold manufacturing process, high-quality gypsum powder and water are mixed evenly in a ratio of 3:2 to cast the mold.

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Abstract

The invention relates to a method for manufacturing the blank body of a silicon carbide space reflecting mirror with super large size, as well as the application thereof. In the prior art, in order to obtain sufficient specific rigidity, the weight is rapidly increased when traditional optical materials, for example, optical glass is adopted for producing a large-size optical element, and the imaging quality rapidly drops, thus traditional optical materials with the optical glass as the representative is no longer suitable for the requirement on the development of space optics, and a novel product is required to replace the traditional optical materials. The method adopts the following steps: the appearance and the size of the reflecting mirror are designed optimally; the reflecting mirror with super large size is divided into small-size blank drawings; dies are manufactured and pulp is prepared through a computer and a numerical control processing apparatus; casting is carried out; the blanks are manufactured through the reactive sintering method; the blanks are processed; and then all the blanks are connected together and trimmed by adopting the braze welding method. The method is used for manufacturing the blank body of the silicon carbide space reflecting mirror with super large size.

Description

Technical field: [0001] The invention relates to a method for manufacturing a super-large space mirror body. Background technique: [0002] Existing future space optical systems aiming at wide-band adaptability, high light weight and high-accuracy reception require super-sized optical components. In order to obtain sufficient rigidity, traditional optical materials such as optical glass are used to manufacture large-sized optical components. It will lead to a sharp increase in weight and a sharp drop in imaging quality. Traditional optical materials represented by optical glass are no longer suitable for the development of space optics. Therefore, products are required to replace traditional optical materials. Invention content: [0003] The object of the present invention is to provide a low-cost and high-efficiency method for manufacturing a super-large-sized silicon carbide space reflector blank combining reaction sintering and brazing. [0004] Above-mentioned purpose...

Claims

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Application Information

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IPC IPC(8): G02B5/08G02B1/02C01B31/36G02B7/183
Inventor 韩杰才张宇民周玉锋孟松鹤杜善义左洪波赫晓东
Owner HARBIN INST OF TECH
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