The invention relates to a manufacturing method of a pure
quartz glass
hollow cylinder. The method adopts an external vapor deposition method to deposit a hollow glass cylindrical
powder rod, a deposition cavity adopts a vertical target rod deposition mode, and the deposition target rod is a high-temperature-resistant and oxidation-resistant
ceramic,
alloy or a composite deposition target rod which takes
alloy as a substrate and is coated with a
ceramic layer. The surface of the deposition target rod keeps a certain roughness, and a blowtorch
assembly is connected with a sliding seat capable of moving up and down and back and forth.During deposition, an upper rotating chuck and a lower rotating chuck drive the deposition target rod to rotate, the blowtorch
assembly is started to spray deposition
powder to the deposition target rod and move up and down in the direction parallel to the axis of the deposition target rod, a suction opening is opened, the
temperature difference of the heated area of the whole deposition target rod is controlled within 350 DEG C, and after deposition is completed and cooling is conducted, the target rod is pulled out of the
powder preform rod and sintered into the transparent pure
silicon dioxide
quartz glass
hollow cylinder. The deposition forming quality of the powder rod is guaranteed, the
processing stability is enhanced, the process is simplified, and the
processing cost is reduced.