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Beryllium window and sealing method thereof

A beryllium window and sealing ring technology, which is applied in the field of beryllium window sealing for X-ray image intensifiers, can solve problems such as poor airtightness and inability to bake, and achieve the effects of increasing wettability and improving sealing survival rate.

Active Publication Date: 2014-04-09
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a beryllium window and its sealing method to solve the technical problems of the existing beryllium window structure and its sealing method with poor airtightness and baking resistance

Method used

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  • Beryllium window and sealing method thereof
  • Beryllium window and sealing method thereof
  • Beryllium window and sealing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment one, such as figure 1 , the beryllium window includes a sealing ring 41 and a beryllium window 44 placed above the sealing ring 41, the sealing edge region of the lower surface of the beryllium window 44 is coated with a layer of metallic nickel 5, and the sealing edge of the beryllium window 44 lower surface The edge area is welded to the sealing surface of the sealing ring 41.

Embodiment 2

[0039] Embodiment two, such as figure 2 , the beryllium window also includes a sealing spacer ring 42 positioned above the beryllium window 44, the beryllium window 44, the sealing ring 41 and the sealing spacer 42 are coaxial, and the sealing edge region of the beryllium window 44 upper surface A layer of metal nickel 5 is plated, and the sealing spacer ring 42 is welded to the sealing edge area of ​​the upper surface of the beryllium window 44 .

[0040] Preferably, the inner edge of the sealing surface of the sealing ring 41 is provided with a chamfer 6 to prevent the solder from diffusing to the effective input surface of the beryllium window.

[0041] Preferably, the diameter of the beryllium window 44 is smaller than the diameter of the outer edge of the sealing isolation ring 42 . The melted solder creates a good vacuum seal by capillary action through the tiny gap between the seal ring and the edge of the seal spacer ring.

[0042] A method for sealing a beryllium w...

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Abstract

The invention provides a beryllium window and a sealing method thereof. The beryllium window and the sealing method thereof are used for solving the technical problems that an existing beryllium window structure and a sealing method thereof are poor in sealing performance and cannot resist roasting. The beryllium window comprises a sealing ring and a beryllium window sheet arranged on the sealing ring, wherein a metal nickel layer is plated on the sealing edge area of the lower surface of the beryllium window sheet, and the sealing edge area of the lower surface of the beryllium window sheet is welded to the sealing face of the sealing ring. Due to the fact that the metal nickel layer is plated on the sealing edge area of the beryllium window sheet, the wettability between the beryllium window sheet and sealing soldering flux can be improved, and thus the sealing success rate of the beryllium window can be improved effectively.

Description

technical field [0001] The invention belongs to the field of sealing a beryllium window for an X-ray image intensifier, and in particular relates to a beryllium window and a sealing method thereof. Background technique [0002] X-ray image intensifier is the core device of portable X-ray detector and X-ray machine vision system. The instrument composed of it is mainly used in the inspection of fractures of human limbs, detection of circuit boards and solder joints of circuit boards, etc. The input window of the X-ray image intensifier is usually sealed with a metal material with high X-ray transmittance. The commonly used input windows of X-ray image intensifiers are metal titanium windows and aluminum windows, because the transmittance of metal beryllium to X-rays is much higher than that of metal titanium and aluminum, and the X-ray intensity and measurement required to obtain the same clear image will be different. Therefore, it is the best choice to use metal beryllium ...

Claims

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Application Information

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IPC IPC(8): H01J29/86H01J31/50H01J9/26
Inventor 赛小锋韦永林曹希斌田进寿刘永安盛立志
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI