Clamping holder for hollow silicon core

Abstract

The invention discloses a clamping holder for a hollow silicon core, and belongs to clamping mechanisms in lap-joint for silicon cores. The clamping holder comprises a connecting seat (5), and a fixing mechanism for a vertical silicon core tube (3), wherein the fixing mechanism for a vertical silicon core tube (3) is arranged on the upper-part surface of the connecting seat (5); and the fixing mechanism for a vertical silicon core tube (3) is used for fixing the inner hole of the lower end of the vertical silicon core tube (3), or fixing the outside of the lower end of the vertical silicon core tube (3), or fixing the inner hole of the lower end of the vertical silicon core tube (3) and the outer edge surface of the vertical silicon core tube (3) simultaneously. The clamping holder disclosed by the invention is used for fixing the hollow silicon core via an insertion rod on the connecting seat, or fixing the hollow silicon core via a sleeve on the connecting seat, or fixing the lower end of the hollow silicon core via the combination of the insertion rod and the sleeve. The clamping holder disclosed by the invention is simple in structure, and especially suitable for fixing a hollow silicon core structure.

Description

【Technical field】 [0001] The invention belongs to the clamping mechanism in the overlapping joint of silicon cores, in particular to a clamping tungsten seat, molybdenum seat or graphite seat for hollow silicon core or other transistor-type materials. 【Background technique】 [0002] It is known that the silicon core bonding technology is a very important technology in the process of producing polysilicon by the Siemens method, and it is mainly used in a link of polysilicon production, that is, the reduction reaction process. The principle of the reduction reaction process is: the reduction reaction is carried out in a closed reduction furnace, and several closed loops are formed by lapping silicon cores in the reduction furnace before loading the furnace, which is the "bridge" in the jargon. "; each closed circuit is formed by two vertical silicon cores and a horizontal silicon core to form a "∏"-shaped structure; the two vertical silicon cores of each closed circuit are res...

AI Technical Summary

Problems solved by technology

[0007] At present, there are wire-cut square silicon cores on the market. Due to the wire-cutting process, the crystal is subjected to micro-shocks in diamond wire-cutting, so that there are many tiny cracks in the finished square silicon core that are difficult to detect with the naked eye. The instantaneous impact on the cracks is large, which greatly increases the number of fractures or collapses during the growth of silicon cores. In mild cases, the group of silicon cores cannot grow, and in severe cases, it will cause shutdown of the furnace.

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