OVERFLOW BRICK AND SHEET FORMING THICKNESS CONTROL METHOD THEREFOR

WIPO Patent Application WO/2021/057801

A1

Disclosed is a sheet forming thickness control method for an overflow brick. The method comprises: S1: obtaining free flow thickness distribution and free flow speed distribution of glass overflow on an overflow face of an overflow brick by means of analog simulation; S2: calculating equivalent pulling speed distribution of an overflow guide plate and a critical equivalent pulling speed of the overflow guide plate; S3: calculating equivalent pulling thickness distribution and forming thickness distribution of the glass overflow; S4: calculating a thickness range of a formed glass substrate; and S5: when the thickness range of the formed glass substrate is greater than a preset threshold, changing the current parameters and repeating S1-S4, and when the thickness range of the formed glass substrate is greater than or equal to the preset threshold, carrying out overflow brick processing and glass substrate production according to the current parameters. The method effectively solves the problem of forming thickness fluctuation of a glass substrate, increases the production margin in terms of design, makes the forming thickness of the glass substrate satisfy requirements, and thus reduces complex requirements for process adjustment and maintains the stability of a production line.

LI MIAO (CN)
LI MENGHU (CN)
YANG GUOHONG (CN)
WANG DACHENG (CN)
ZHANG ZHIJUN (CN)

PCT/CN2020/117170

April 01, 2021

September 23, 2020

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CAIHONG DISPLAY DEVICES COMPANY LTD (CN)

C03B17/06

CN110963675A	2020-04-07
CN108793688A	2018-11-13
CN108996894A	2018-12-14
CN101955315A	2011-01-26

XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)

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