A Design Method of Effective Face Width of Overflow Bricks Controlling the Average Thickness of Side Plates

Abstract

The invention discloses a method for designing the effective face width of overflow bricks for controlling the average thickness of side plates. The design method starts from the target glass substrate width W G Starting from the process, the correction coefficient is introduced to calculate the width W of the glass substrate lead plate Y and overflow brick effective face width W E , and then calculate the average side plate thickness T of glass substrate manufacturing E , calculate W by continuously adjusting E when the overflow coefficient, so that the final T E Meet the design requirements; that is, by designing the lead plate width W Y and effective face width W E , so that the glass substrate side plate thickness T E Meet the design requirements; the process parameters are also used to calculate other parameters of the overflow brick, including the guide plate speed V, the average side plate flow rate Q E and the average side plate mass M E To meet the process requirements for manufacturing stable lead plates in glass substrate production lines. The invention effectively solves the problem of fluctuating forming lead plates on site, further optimizes the forming thickness distribution of the glass substrate manufacturing, increases the production margin from the design, and ensures the thickness and consistency of the side plates of the glass substrate.

Description

【Technical field】

[0001] The invention belongs to the field of glass substrate manufacturing, in particular to a method for designing the effective surface width of overflow bricks for controlling the average thickness of side plates. 【Background technique】

[0002] The glass substrates used in the production of flat panel displays such as TFT-LCD (Thin Film Transistor Display) and PDP (Plasma Display Panel) are manufactured by overflow down-drawing. In the forming process, molten glass melted by a glass melting furnace is supplied to Melt overflow down-draw molding device to manufacture.

[0003] Display manufacturing requires ever larger glass substrates to increase productivity and reduce costs. The larger the glass substrate, the more difficult it is to produce, and the quality control of the glass substrate is more complicated. The overflow brick is one of the core components of the glass substrate manufacturing molding device. In terms of process, the fluid at the e...

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