Quartz thick-walled tube secondary moulding device, and moulding method

Abstract

The invention discloses a quartz thick-walled tube secondary moulding device. The quartz thick-walled tube secondary moulding device comprises a furnace body and a traction mechanism; the furnace bodycomprises a furnace shell, an upper end cover, a lower bottom plate, an induction heating coil, an upper induction heating member, a center pole, a lower thermal insulation member, and a moulding platform; a furnace chamber penetrating the furnace body is arranged in the furnace shell; the upper end cover and the lower bottom plate are arranged on the upper end and the lower end of the furnace shell respectively; the upper end cover is provided with a locating groove and a nitrogen gas hole; the lower bottom plate is provided with a feeding port and a nitrogen gas hole; the induction heatingcoil is arranged in the furnace shell; the upper induction heating member is a hollow cylindrical structure member, is arranged in the furnace chamber, and is suspended on the upper wall of the furnace shell; the center pole is arranged in the furnace chamber, and is located using the locating groove, and is provided with a through hole; the lower end of the upper induction heating member is connected with the moulding platform; the moulding platform is provided with a tapered throat; the lower end of the moulding platform is provided with the lower thermal insulation member. The invention also discloses a secondary moulding method using the quartz thick-walled tube secondary moulding device. The quartz thick-walled tube secondary moulding device is capable of realizing a second time of moulding of thick-walled tubes with a thickness higher than a tolerance, and saving raw materials effectively.

Description

technical field [0001] The invention relates to the technical field of quartz tubes, in particular to a secondary molding device and a molding method for quartz thick-walled tubes. Background technique [0002] Quartz tubes are used in a wide range of fields such as semiconductors and optical communications. Common thin-walled quartz tubes have many specifications, but there are still very few quartz thick-walled tubes (wall thickness > 15mm) that are directly produced. At present, the method for producing quartz thick-walled tubes mainly has two kinds of processing techniques: 1) the quartz rods are directly made into thick-walled quartz tubes through a hollowing process; 2) the two-step method is drawn into shape. The thick-walled quartz tubes formed by these two processes are all made of new raw materials. If there are quality problems after use, they will be discarded directly. At present, there is a thick-walled pipe butt joint process, but the thick-walled pipe wi...

AI Technical Summary

Problems solved by technology

At present, there is a thick-walled pipe butt joint process, but the thick-walled pipe will have a wall thickness limit, and there are certain limitations in use.

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