Molybdenum guide tube is introduced into the single crystal furnace, which is an important improvement. After the use of molybdenum guide tube, the argon gas in the upper part of the single crystal furnace becomes smooth, the flow of argon gas is accelerated, and the deposition of silicon oxide on the single crystal furnace is greatly reduced. Because of the temperature protection of the molybdenum guide tube, the heating time is reduced, the crystallization time is shortened by nearly 35%, and the incidence of crystal dislocation is also reduced. Therefore, the application of molybdenum guide tube reduces energy consumption and improves production efficiency.
The shape of molybdenum guide tube is big on the opening, small horn on the opening, the opening of the single crystal furnace manufacturers are different and a variety of styles, its specifications are 16 inches, 18 inches, 22 inches and so on. The production and processing of molybdenum guide tube generally adopts 0.8-2.0mm high temperature
molybdenum plate, which is cut into sector according to the drawing size, heated and rolled into horn shape, riveted or welded, and finally corrected. In order to save cost, it is also useful to manufacture molybdenum guide tube by molybdenum splicing, which has more riveting places and affects the service life.
The finished molybdenum guide tube has a smooth surface, the upper and lower diameters are consistent, the size is accurate, and the graphite guide tube can be closely fitted, the single weight of the finished product is 3-10kg.