Process for eliminating striae in quartz glass
By combining two-stage heating, heat preservation, and cooling with multiple tank settling treatments and liquid washing, the optical stripe problem caused by uneven internal temperature of quartz glass ingots was solved, optical uniformity was improved, and high-precision performance of optical components was ensured.
CN121850335BActive Publication Date: 2026-07-03南通晶体有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 南通晶体有限公司
- Filing Date
- 2026-03-17
- Publication Date
- 2026-07-03
Smart Images
Figure CN121850335B_ABST
Abstract
The application provides a process for eliminating the stripes of a quartz glass, comprising the following steps: providing a quartz glass raw material and a slot sinking mold, the slot sinking mold having a central axis and a forming slot extending along the central axis; performing a first liquid washing treatment on the quartz glass raw material; placing the quartz glass raw material after the first liquid washing treatment in the forming slot, performing a first slot sinking treatment on the quartz glass raw material under a first pressure environment, and obtaining a first quartz glass piece; setting the side surface of the first quartz glass piece just formed in the forming slot around the central axis as an off-axis surface, and sequentially performing a cold working treatment and a second liquid washing treatment on the first quartz glass piece; placing the first quartz glass piece after the second liquid washing treatment in the forming slot, supporting the off-axis surface by the bottom wall of the forming slot, and performing a second slot sinking treatment on the first quartz glass piece under a second pressure environment; repeating the last two steps until there is no obvious stripe on the first quartz glass piece, and obtaining a second quartz glass piece.
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