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High pressure resistant load leading-out end structure and sealing-in craft based on metal ceramic

A cermet, high pressure technology, used in metal processing equipment, manufacturing tools, welding equipment and other directions, can solve the problems of unfavorable pressure process stability, difficult to control the amount of brazing filler metal and weld metal distribution, etc. Power switching capability and product reliability, improving the withstand voltage level and the number of high-voltage load switching groups, and the effect of high-pressure sealing

Inactive Publication Date: 2013-04-24
CHINA AEROSPACE TIMES ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to control the amount of solder and the distribution range of the weld metal, which is not conducive to the stability of the pressure resistance process

Method used

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  • High pressure resistant load leading-out end structure and sealing-in craft based on metal ceramic
  • High pressure resistant load leading-out end structure and sealing-in craft based on metal ceramic
  • High pressure resistant load leading-out end structure and sealing-in craft based on metal ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] (1) Fix the bottom plate, insulator and lead-out rod through tooling, and place brazing material at the joint between the bottom plate, insulator and lead-out rod; in this example, Kovar alloy is used for the bottom plate, and 95 porcelain is used for ceramics: silver is used for the brazing material Copper 28 solder: solder amount: 0.12-0.18g / cm 2 .

[0054] (2) Put the workpiece processed in step (1) into the vacuum furnace, first start the mechanical vacuum pump, open the bypass valve, start the Roots pump after vacuuming for about 10 minutes, open the main valve to start the diffusion pump, and diffuse The pump works for 80-90 minutes. During this time, the temperature is raised at a heating rate of about 10°C. While vacuuming, the temperature is preheated to below 450°C. After the diffusion pump works, the vacuum degree reaches 10°C. -3 Above Pa, keep warm for 30 minutes.

[0055] (3) Continue to heat up at 15-20°C / min until 740°C, and keep warm for 20 minutes; a...

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Abstract

The invention discloses a high pressure resistant load leading-out end structure and a sealing-in craft based on metal ceramic. The high pressure resistant load leading-out end structure comprises insulators, leading-out rods and a base plate (7), wherein the insulators comprise four coil insulators (5) and at least four load insulators (6), the leading-out rods comprise at least four load leading-out rods (3) and four coil leading-out rods (4), the insulators are made of ceramic materials, the coil leading-out rods (4) are symmetrically distributed in the center of the base plate (7), the at least four load leading-out rods (3) are symmetrically distributed on two sides of an X axis of the base plate (7), the leading-out rods are arranged on the base plate (7) in a sleeved and sealed mode through the insulators, two ends of each leading-out rod are respectively higher than two ends of each insulator, and the two ends of each insulator are higher than the base plate (7).

Description

technical field [0001] The invention relates to the technical field of switch high-voltage resistant design, in particular to a pressure-resistant structure of a sealed load lead-out end which improves the switch withstand voltage level. Through the design of the breakdown voltage and space creepage distance of each ceramic insulator, the withstand voltage level of the switch is improved, and through the process control of the complex metal-nonmetal sealing weld, high airtight sealing is realized. Background technique [0002] With the increase of electric power, the voltage level of the switch is getting higher and higher. Switches used to switch high-voltage loads, such as the withstand voltage design between contacts, main contacts and other parts of relays, directly affect the reliability of relays. In order to achieve high-voltage and high-power switching, the existing switches increase the structural size and weight of the switch, and generally can only switch one gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/02H01H1/58H01H11/00B23K1/008
Inventor 孙超郝长岭杨斌李明
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP
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