A seed clamp structure
A seed crystal clamp and seed crystal clamp technology are applied in the field of seed crystal clamp structure, which can solve the problems of affecting the crystal quality, poor coaxiality between the seed crystal rod and the seed crystal, and easy detachment of the seed crystal, so as to reduce thermal stress and reduce thermal stress. Stress concentration, strong disassembly, uniform heating and force
Active Publication Date: 2015-10-28
哈尔滨秋冠光电科技有限公司
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Problems solved by technology
[0004] At present, the seed crystal connection method is usually to tie the seed crystal to the seed crystal fixture, but this method makes the coaxiality of the seed crystal rod and the seed crystal poor, which not only affects the crystal quality, but also the seed crystal is easy to fall off
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[0024] The present invention will be further described below in conjunction with specific embodiment:
[0025] combine Figure 1-Figure 2 , the present embodiment includes a connector 1, a seed crystal connecting rod 2 and a seed chuck 3, the upper part of the connector 1 is a cylinder with an internal thread, the outer diameter of the cylinder with an internal thread is 25~40mm, the height is 10~20mm, and the inner thread There are two flat sides opposite to each other for clamping and fixing when screwing, the width of the flat side is 5~10mm, and the inner wall of the cylinder with internal thread is provided with threads, which are connected with the external pulling mechanism; the lower part of the connecting piece 1 is Inverted cone with internal thread, connected with the seed crystal connecting rod; the height of the inverted cone is 25~35mm, the lower part is provided with a through hole, the inner wall of the through hole is provided with threads, connected with the ...
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Abstract
The invention provides a seed chuck structure. The seed chuck structure comprises a linking piece, a seed linking rod and a seed chuck head, wherein the upper part of the linking piece is a cylinder with internal screw threads and is connected with an external lifting mechanism; the lower part of the linking piece is an inverted cone with internal screw threads and is connected with a seed rod; the seed linking rod is a cylindrical molybdenum rod, the two ends of which are provided with external screw threads; the upper end of the cylindrical molybdenum rod is connected with the linking piece, and the lower end of the cylindrical molybdenum rod is connected with the seed chuck head; and the seed chuck head comprises two parts. The seed chuck structure can effectively fix the seed and prevent the seed from dropping; the coaxial growth of large-scale single crystals on the seed, the seed chuck head, and the seed linking rod eliminates the eccentricity problem; in addition, the symmetrical structure of the seed chuck structure is conductive to the more uniform heating of the seed and the reduction of the stress concentration.
Description
(1) Technical field [0001] The invention relates to a seed clip structure used in crystal growth equipment, in particular to a seed clip structure used in sapphire crystal growth equipment. (2) Background technology [0002] With the gradual deepening of understanding of materials, people can artificially synthesize crystals through various methods, and they have been widely used in many aspects of human social life. There are many crystal growth methods, taking sapphire single crystal growth as an example, the methods include pulling method, Kyropoulos method, heat exchange method, guided mode method, crucible drop method, etc. Among these growth methods, most of them require a seed crystal with good crystal integrity and few defects as a guide to grow high-quality, large-size sapphire single crystal through its good genetic characteristics. [0003] Taking the pulling method and the Kyropoulos method as examples, the seed crystal is generally a cylinder or a cuboid. The ...
Claims
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IPC IPC(8): C30B15/32
Inventor 左洪波杨鑫宏
Owner 哈尔滨秋冠光电科技有限公司