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Rapid molding method for special-shaped quartz composite ceramic wave-transmission antenna window

A technology of composite ceramics and molding methods, which is applied in the field of rapid prototyping of special-shaped quartz composite ceramic wave-transparent antenna windows, can solve the problems of high cost, difficulty in imitation molding of special-shaped parts, long process cycle, etc., and achieve high molding efficiency and designability Strong, low process cost effect

Active Publication Date: 2019-09-24
湖北三江航天江北机械工程有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

This method has high cost and long process cycle, and it is not easy to carry out the imitation molding of special-shaped parts

Method used

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  • Rapid molding method for special-shaped quartz composite ceramic wave-transmission antenna window
  • Rapid molding method for special-shaped quartz composite ceramic wave-transmission antenna window

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0025] Embodiment, a special-shaped quartz composite ceramic wave-transparent antenna window rapid prototyping method, such as figure 1 and 2 As shown, the steps are as follows:

[0026] Step 1: Take 1kg of B-type quartz fiber cloth (satin cloth, 0.28mm, no twist), spread it on the upper layer of the water bath kettle, steam it for 15 hours, then dry it at 100°C for 3 hours, put it in a heat treatment furnace, and Oxygen heat treatment to remove sizing agent;

[0027] Step 2: Soak the pretreated quartz fiber cloth in 10% silica sol (more than 80% of the colloidal particles with a particle size below 100mm) for 1.5h, then let it air at room temperature for 15h, and then dry it at 120°C. Then cut or equivalent area size at 20mm 2 ~50mm 2 fiber cloth.

[0028] Step 3: Soak the fiber cloth in silica sol with a solid content of 65% for 1h to 2h, spread ...

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Abstract

The invention discloses a rapid molding method for a special-shaped quartz composite ceramic wave-transmission antenna window. The method comprises the following steps: 1, removing an impregnating agent at the surfaces of quartz fibers by adopting a combination mode of water steam cooking and oxygen-introducing heat treatment; 2, performing surface treatment on the pre-treated quartz fiber cloth in a silica sol with a low solid content, and performing cutting to obtain a fiber cloth having an equivalent area of 5-100 mm<2>; 3, immersing the fiber cloth piece in a silica sol with a high solid content, performing spreading on a special pressure molding tool, performing pressure molding, performing curing, and performing demoulding; and 4, immersing the pressed blank in a silica sol once, and performing heat treatment at 850 DEG C; and performing processing according to requirements to obtain a design size. The method provided by the invention can realize rapid molding, and has high efficiency, low process costs and uniform materials.

Description

technical field [0001] The invention relates to the technical field of ceramic-based wave-transparent composite materials, in particular to a method for rapid prototyping of special-shaped quartz composite ceramic wave-transparent antenna windows. [0002] technical background [0003] As a communication window for controlling missiles, the antenna window is a key component to ensure the normal operation of the radar system. With the development of aerospace technology, the aerodynamic shape of the aircraft presents a special-shaped structure, and the antenna window with wave-transmitting, heat-insulating, and load-bearing functions also shows a development trend of special-shaped structures. High Mach number aircraft mostly use ceramic-based wave-transmitting materials, among which, quartz fiber-reinforced quartz composite ceramic materials are the most widely used. The traditional molding method of quartz composite ceramic antenna window is mostly weaving quartz fiber into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/14C04B35/624
CPCC04B35/803C04B35/14C04B35/624C04B2235/6567C04B2235/661
Inventor 吴广力邓德凤王芬刘义华曾建军王宇锋
Owner 湖北三江航天江北机械工程有限公司
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