A kind of manufacturing process of glass master disc substrate

Abstract

The invention discloses a manufacturing process of glass motherboard substrate. The manufacturing process of glass motherboard substrate comprises the following steps: molding step, edging operating step, surface shape screening step, handwork surface shape correcting step, accurate grinding step, early polishing step, precision polishing step, ultrasonic wave purifying step, chemistry strengthening step and surface purifying and processing step. The manufacturing process of glass motherboard substrate adopts the precision lens grinding core catching machine for executing the edging operating step, adopts the special grinding material and special technology parameter for executing the accurate grinding step and early polishing step, adopts the special additive formula and the special technology parameter for finishing the chemistry strengthening step, the surface roughness of the product can get to the nano grade standard, the consistency and the prestressing force of the glass are greatly raised, the hardness and shock resistance of the surface of the glass are increased and the degree of finish and the flatness of the glass surface can be kept, the outline size is not changed, the glass is not easy to scratch and break and the safety and reliability of the product are improved.

Description

technical field [0001] The invention relates to a glass manufacturing process, in particular to a glass mother disk substrate manufacturing process. Background technique [0002] The production of the master substrate is an indispensable link in the production of the entire optical disc. In the entire optical disc, it is not only the carrier of grooves, etc., but also the physical shell of the entire optical disc. Master disc substrates are divided into two categories: plastic substrates and glass substrates. The characteristics are that plastic substrates are cheap, while glass substrates are highly reliable. Especially for magneto-optical discs that deal with relatively weak signals, people pay more attention to glass substrates. Because it has high reliability in terms of surface shape accuracy, optical characteristics, and environmental resistance. The technical parameters of the surface of the master disc, such as surface flatness, roughness and defect density, etc., w...

AI Technical Summary

Problems solved by technology

Although the existing glass master substrate processing technology, especially the chemical tempering process has greatly improved the strength of the glass, it will cause large deformations in the flatness and parallelism of the glass, and the optical indicators will not meet the standards, which will cause The yield rate of the product is low and the production cost is high

Images