Automatic quartz tube welding device and method

Abstract

The invention discloses an automatic quartz tube welding device and method. The device comprises an operation table, a control panel, an objective table rotating apparatus, an oxyhydrogen welding gunmoving apparatus, oxyhydrogen welding guns, oxyhydrogen welding gun adjusting apparatuses and oxyhydrogen gas valves. The method includes: placing a quartz tube filled with a polycrystalline materialand other auxiliary materials on an objective table; placing a quartz cap at the upper port of the quartz tube and performing aligning; adjusting the concentricity of the quartz tube; adjusting the positions of the oxyhydrogen welding guns according to the diameter of the to-be-welded quartz tube; and performing igniting to adjust the flame size of the oxyhydrogen welding gun, and sintering the joint of the quartz tube and the quartz cap to finish the welding of the two. The method has the following advantages that: the flame of each oxyhydrogen welding gun is independently controlled, and therisk of welding failure caused by single-gun tempering is avoided; the welding process is simple in operation and high in efficiency, the three welding guns are used for sintering at the same time, the quartz tube is heated more evenly by combining rotation, the welding quality is better than that of manual operation, the problem that stress tube cracking is prone to occurring in the manual operation is solved, and the personal safety of operators can be well guaranteed.

Description

technical field [0001] The invention relates to crystal material preparation technology, in particular to a quartz tube automatic welding device and method. Background technique [0002] Because the vertical gradient solidification method (VGF / VB) technology is relatively mature and the operating cost is low, it is a crystal growth method that is widely used in the field of crystal material preparation. The more commonly used crystal growth system in this method consists of a vacuum-sealed quartz tube. The process of this crystal growth process is to put the prepared polycrystalline materials and seed crystals into the pre-prepared pyrolytic boron nitride (PBN) crucible, and then put the PBN crucible into the quartz tube, and after evacuating the system, Sintering in a vacuum state, and finally put the PBN-quartz tube system in a vacuum state into a VB / VGF single crystal furnace, and use the method of moving the crucible system or cooling in stages to achieve directional cr...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a device and method for automatic welding of quartz tubes, which are used to solve the problem of cracking of quartz tubes that easily occurs during the welding process of existing quartz tubes, and at the same time greatly shorten the welding time of tube caps and improve the efficiency of sealing tubes; in addition, Avoid close contact with the oxyhydrogen flame for the operator to ensure personal safety

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