Lifting appliance for crucible for growing sapphire single crystal

Abstract

The invention discloses a lifting appliance for a crucible for growing a sapphire single crystal. The lifting appliance comprises a lifting steel wire rope 1, a lifting steel wire rope 2, an upper steel wire rope ring, a lower steel wire rope ring, a bottom support steel wire rope 1, a bottom support steel wire rope 2 and rope threading rings, wherein four rope threading rings are arranged on each of the upper steel wire rope ring and the lower steel wire rope ring; each of the lifting steel wire rope 1 and the lifting steel wire rope 2 passes through two adjacent rope threading rings on the upper steel wire rope ring and two adjacent rope threading rings on the lower steel wire rope ring in turn; and the bottom support steel wire rope 1 and the bottom support steel wire rope 2 are respectively sleeved on the lifting steel wire rope 1 and the lifting steel wire rope 2 through steel rings at the two ends and are positioned below the lower steel wire rope ring. The lifting appliance formed by combining flexible steel wire ropes is convenient to sleeve and detach and lifts and moves the crucible safely and reliably; extruding force applied to the crucible is small when the crucible is lifted, so that the crucible cannot be damaged due to pressing, and the service life of the crucible can be prolonged; and more importantly, the crucible can be lifted before a furnace is cooled, unproductive time can be greatly shortened, work efficiency is improved, and production cost is reduced.

Description

Technical field: [0001] The invention relates to the field of sapphire single crystal manufacturing, in particular to a crucible hanger for sapphire single crystal growth. Background technique: [0002] Sapphire, also known as white sapphire, is the crystal material whose hardness is second only to diamond in the world. Due to its excellent physical, mechanical, chemical and infrared light transmission properties, it has always been an urgently needed material in the fields of microelectronics, aerospace, military industry, etc., especially Optical-grade large-size sapphire material has become a hot spot in research and development and industrialization at home and abroad in recent years due to its characteristics of stable performance, large market demand, comprehensive utilization rate and high product added value. [0003] The crucible is an appliance used in conjunction with the melting furnace, and has high requirements for high temperature resistance. In actual product...

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Problems solved by technology

[0003] The crucible is an appliance used in conjunction with the melting furnace, and has high requirements for high temperature resistance. In actual production, since the position of the crucible in the melting furnace is fixed and the weight is heavy after loading, the crucible must be lifted to put in or Move out of the furnace. In the prior art, bolt clamping devices are used to clamp the crucible opening support and then lift and move. However, after the crystal pulling is completed, the crucible must be cooled before adjustment, which not only wastes a lot of non-production time, but also increases efficiency. It is very low and inconvenient to operate. At the same time, it is easy to crack the crucible by supporting and lifting the opening. In addition, the crucible is in a heated state for a long time, and the crucible is easily damaged when it is heated and stressed. The service life is only half a year, and the production cost is high, so how to prolong the service life of the crucible and facilitate lifting and moving is the key to saving production costs. The feeding amount when preparing sapphire single crystal is 35kg, 85kg and other different levels. The corresponding tungsten-molybdenum crucible The size of the tungsten-molybdenum crucible is also different. Because the mass of the tungsten-molybdenum crucible is large and it is not easy to move, it is necessary to design a new type of crucible hanger

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