Sapphire seed chuck with double positioning pins

A seed crystal chuck, sapphire technology, applied in the direction of seed crystal remaining in the melt, single crystal growth, crystal growth, etc. during the growth period, can solve the problems of broken, broken joints, poor centrality, etc., to achieve The effect of dispersing contact stress, preventing seed crystal fracture, and ensuring centrality

Inactive Publication Date: 2013-12-25
ZHEJIANG JINGSHENG MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of seed chuck is difficult to process and has been broken, so it is difficult to use on a large scale
The connection structure between the seed chuck and the pull ro

Method used

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  • Sapphire seed chuck with double positioning pins
  • Sapphire seed chuck with double positioning pins
  • Sapphire seed chuck with double positioning pins

Examples

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0024] Such as Figure 1 to Figure 6 As shown, the sapphire seed chuck with double positioning pins includes a connecting body 1, a transition section 2 and a connecting nut 3. The sapphire seed chuck is made of pure molybdenum and is used to clamp a rectangular parallelepiped seed crystal 4. The seed crystal 4 is provided with at least two semicircular grooves, and the seed crystal 4 in this embodiment is provided with two semicircular grooves. One end of the connecting body 1 is provided with a screw hole, and there is a fine internal thread inside the screw hole. The other end of the connecting body 1 has a rectangular installation groove, and the center line of the installation groove coincides with the center line of the sapphire seed crystal chuck. At least one pin hole is provided on both sides of the installation groove, for the double ...

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PUM

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Abstract

The invention relates to a seed chuck used in the process of growth of sapphire and aims to provide a sapphire seed chuck with double positioning pins. The sapphire seed chuck comprises a connector, a transition section and a connection nut, wherein one end of the connector is provided with a screw, a fine pitch internal thread is arranged in the screw, the other end the connector is provided with an installation groove, two sides of the installation groove are respectively provided with at least one pinhole, one end of the transition section is provided with a fine pitch external thread matching with the fine pitch internal thread of the connector, the root of the fine pitch internal thread is provided with a tool withdrawal groove, the connection nut is sleeved on the other end of the transition section, and a contact-making surface of the connection nut and the transition section comprises a conical surface. According to the invention, the size of the installation groove matches with that of a seed, and the center line of the seed coincides with the center line of the seed chuck; a conical surface with a degree of 45 DEG is employed for cooperation between the connection nut and the transition section, so concentricity with an upper shaft is guaranteed after installation; center lines of the double positioning pinholes are located on an installation groove line, so contact stress is dispersed, fracture of the seed is effectively prevented, and convenient processing is realized.

Description

technical field [0001] The invention relates to a seed crystal chuck in the sapphire growth process, in particular to a sapphire seed crystal chuck with double positioning pins. Background technique [0002] There are two commonly used growth methods for sapphire crystals: the Czochralski method (CZ method for short) and the Kyropoulos method (KY method for short, which is called the Kyropoulos method in mainland China). The Kyropoulos method is usually used to grow large-diameter, high-quality, colorless sapphire crystals. The specific process is as follows: (1) Put the pure raw materials into the crucible, and a rotatable and lifting lifting rod is installed above the crucible. A sapphire seed chuck, on which is installed an oriented colorless sapphire seed crystal (note: no color-causing agent is added when growing colorless sapphire, and the seed crystal is also colorless sapphire); (2) heating the raw material to the melting point After melting to form a molten soup, l...

Claims

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Application Information

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IPC IPC(8): C30B17/00C30B29/20
Inventor 张俊朱亮付春雷沈兴潮宋建军
Owner ZHEJIANG JINGSHENG MECHANICAL & ELECTRICAL
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