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Fixture for welding Al2O3 ceramic to titanium ring in artificial retina

A retina and ceramic technology is applied in the field of fixtures for welding Al2O3 ceramics and titanium rings in artificial retinas, and achieves the effects of avoiding dislocation, easy operation and use, and reasonable composition and structure.

Active Publication Date: 2016-05-25
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is no special welded artificial retina with Al 2 o 3 Literature Reports on Fixtures with Ceramic and Titanium Rings

Method used

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  • Fixture for welding Al2O3 ceramic to titanium ring in artificial retina
  • Fixture for welding Al2O3 ceramic to titanium ring in artificial retina
  • Fixture for welding Al2O3 ceramic to titanium ring in artificial retina

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Experimental program
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Effect test

Embodiment Construction

[0016] from figure 1 , figure 2 , image 3 It can be seen that Al in a welded artificial retina 2 o 3 A fixture for ceramic and titanium rings, which includes a graphite base 2, a graphite compact 1, and the like. Described graphite base 2 is provided with a boss 21, is provided with on the boss 21 and is used for placing Al 2 o 3 The groove 22 of the ceramic disc 3 can be Al 2 o 3 A ceramic disc 3 is embedded therein. The graphite briquetting block 1 is provided with a fastening groove 11 matched with the boss 21 on the graphite base 2, and the top surface of the fastening groove 21 is provided with a draw-in groove 13 for pressing the titanium ring 5, The titanium ring can be clamped in the slot, which can not only play a position-limiting role, but also prevent the specimen from being connected to the fixture due to the spreading of the filling material.

[0017] A number of observation fine-tuning windows 14 are provided on the surrounding walls of the fastening ...

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Abstract

The invention relates to a fixture for welding an Al2O3 ceramic to a titanium ring in an artificial retina. The fixture comprises a graphite base and a graphite pressing block, a boss is arranged on the graphite base, and a groove for containing an Al2O3 ceramic disc is formed in the boss; the graphite pressing block is provided with a fastening groove which is matched with the boss on the graphite base, a clamping groove for laminating the titanium ring is formed in the top face of the fastening groove, and multiple observation fine-tuning windows are formed in the peripheral wall of the fastening groove formed in the graphite pressing block. The position of a packing material at a connection interface can be fine-tuned through the observation fine-tuning windows, and the limiting situation of a whole test piece is observed. The fixture for welding the Al2O3 ceramic to the titanium ring in the artificial retina is reasonable in structure, easy and convenient to operate and use, reliable in connection and fixation, capable of overcoming the dislocating and nonwelding defects and specially suitable for clamping of a structural part for connecting the Al2O3 ceramic with the titanium part in the artificial retina.

Description

technical field [0001] The invention relates to a fixture for welding, in particular to a welding fixture for Al in artificial retina. 2 o 3 Clamps for ceramic and titanium rings. Background technique [0002] Artificial retina technology helps patients obtain basic vision by replacing the functionless retina with electronic devices. Its successful application has great economic value and social significance. Al 2 o 3 The ceramic disc and titanium ring connection structure is an important part of the artificial retina structure, and the ceramic / metal composite structure requires Al in the welding process 2 o 3 The ceramic disc and the titanium ring must be completely aligned and sealed, and there must be no defects such as misalignment or lack of welding, otherwise the airtightness of the entire structure will be affected, which in turn will affect the use of the artificial retina. [0003] Therefore, in welding Al 2 o 3 For ceramic discs and titanium rings, it is ne...

Claims

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Application Information

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IPC IPC(8): B23K37/04B23K37/00A61F9/08A61F2/14
CPCA61F2/14A61F9/08B23K37/00B23K37/04
Inventor 刘多牛红伟韩桂海宋晓国冯吉才刘景和
Owner HARBIN INST OF TECH AT WEIHAI
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