Ultra-low-expansion glass-ceramic super-stable treatment method

A technology of stabilization treatment and glass-ceramics, which is applied in the direction of Sagnac effect gyroscope, etc., can solve the problem of not being able to meet the ultra-stabilization treatment requirements of laser gyroscope resonator cavity

Active Publication Date: 2014-12-24
FLIGHT AUTOMATIC CONTROL RES INST
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Problems solved by technology

[0005] In order to solve the problem that the existing technology cannot meet the ultra-stabilization processing requirements of the laser gyro resonator, the present invention provides an ultra-low expansion glass-ceramic that can realize the stability of the resonator structure and ensure the ultra-low expansion characteristics of the resonator cavity Ultra-stabilization treatment method

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  • Ultra-low-expansion glass-ceramic super-stable treatment method

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Embodiment Construction

[0019] The present invention is described in further detail below by specific embodiments:

[0020] The invention relates to an ultra-low expansion glass-ceramic ultra-stabilization treatment method, in particular to an ultra-stabilization treatment method for a laser gyro resonant cavity with high stability requirements.

[0021] The specific implementation steps of the present invention are as follows:

[0022] Step 1. Put the workpiece in a high temperature resistant non-metal box,

[0023] The size of the non-metal box is large enough so that the distance between each edge of the workpiece and the inner layer of the non-metal box is greater than 30mm. It is supported by a 10mm support block to ensure that during the temperature treatment process, most of the temperature conduction on the workpiece is achieved through the gas in the box;

[0024] Step 2. After placing the workpiece, seal the non-metal box,

[0025] Ensure that the gas in the box is not exchanged with the...

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Abstract

The invention relates to an ultra-low-expansion glass-ceramic super-stable treatment method. The invention adopts an air-sealing low conductive high temperature dependent non-metallic box (1). The method comprises the following steps that: an ultra-low-expansion glass-ceramic machining part (2) to be treated is placed in a heat treatment furnace (3), the heat treatment furnace is heated from the room temperature to a temperature ranging from 360 DEG C to 420 DEG C at a rate of 3-5 DEG C / min according to the demand, the temperature is kept for 8-12 hours, then the temperature is reduced at a rate of 0.05-0.2DEG C / min; and when the temperature of the treatment furnace is reduced to 120+ / -20 DEG C, the treatment furnace control system is closed, and the treated machining part is placed in the furnace for 48 hours and then taken out. By adopting the ultra-low-expansion glass-ceramic super-stable treatment method, the internal stress existing in the machining part and the thermal deformation of the machining part can be effectively reduced so that the angle variation is less than 1 second of arc when the temperature changes from -50 DEG C to +100 DEG C; and the linear expansion coefficient of the glass-ceramic is ensured to be superior to 0.5*10<-7> / DEG C and the stabilization efficiency is increased.

Description

technical field [0001] The invention relates to an ultra-low expansion glass-ceramic ultra-stabilization treatment method, in particular to an ultra-stabilization treatment method for a laser gyro resonant cavity with high stability requirements. Background technique [0002] Laser gyroscopes generally use ultra-low expansion glass-ceramics (such as ZERODUE, etc.) to be manufactured as ring resonators. The temperature stability of the resonator directly affects the stability of the laser gyro performance. The cavity of the resonant cavity is generally realized by optical machining methods such as punching, milling, and grinding. The machining process inevitably generates residual stress, which destroys the stability of the material and causes the workpiece to deform over time. [0003] Although the traditional temperature stabilization treatment method largely eliminates the internal stress of the workpiece and realizes the stabilization of the structure, it destroys the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B32/00G01C19/66
Inventor 韩宗虎雷建军陆志东屈玉善郭昕李大琪
Owner FLIGHT AUTOMATIC CONTROL RES INST
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