Design method of overflow brick wetting process capable of improving extraction amount

Abstract

The invention discloses a design method for a wetting process of an overflow brick with improved extraction amount, and belongs to the technical field of glass substrate manufacturing. According to the extraction amount increasing overflow brick wetting process design method provided by the invention, a wetting process mathematical model is established based on an overflow brick wetting process principle; an overflow brick wetting process is divided into four stages of far-end wetting, near-end wetting, middle wetting and high-temperature scouring and overflow brick guide plate preparation, and the MSU temperature of the upper portion of an overflow brick, the adjustment speed and the holding time of the inclination angle of a muffle furnace and the up-regulation speed and the holding time of the extraction amount in each stage are planned in detail. By the adoption of the design method, changes of key parameters such as the extraction amount, the inclination angle of the muffle furnace and the MSU temperature of the upper portion of the overflow brick in the wetting process can be visually presented through the curve, powerful technical support is provided for design, optimization and verification of the wetting technology of the high-generation overflow brick with the large extraction amount, the risk of the wetting technology is reduced, and the wetting efficiency is improved. And the process stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of glass substrate manufacturing, and in particular to a wetting process design method for overflow bricks with increased lead-out volume. Background Art

[0002] In the TFT-LCD (Thin Film Transistor Display) flat panel display manufacturing industry, the production of glass substrates usually adopts advanced overflow down-draw technology. This process involves accurately supplying molten glass liquid to the molten overflow down-draw molding device, and shaping high-quality substrates through complex and delicate process steps. Before the formal introduction of the plate, the preheating of the molding device and the wetting of the overflow bricks are indispensable links, which are directly related to the molding stability of the glass ribbon and the quality of the final product.

[0003] The glass liquid flows over the surface of the overflow brick and converges and bonds to form a glass ribbon at the root of the overflow surface on both sides of the overflow brick. Under the action of gravity and traction, the glass ribbon overcomes the internal friction and viscous resistance, and the thickness gradually decreases to the target product thickness; the traction roller is located far enough downstream of the device so that the glass ribbon has been cooled and has sufficient rigidity during pulling; at the same time, the thickness distribution below the tip (root) of the overflow brick is closely linked to the temperature control strategy, which becomes the key to optimizing product performance.

[0004] Faced with the growing demand for display technology, such as higher resolution, refresh rate, circuit integration, narrow frame design, improved panel aperture ratio and the manufacture of larger panels, oxide (such as IGZO) technology has emerged, bringing revolutionary opportunities to the next generation of high-performance display market. IGZO technology is not only compatible with the G10.5 generation production line, achieving effective cost control, but also shows significant performance advantages over a-Si and LTPS technologies, and is widely used in cutting-edge fields such as high-end large LCD TVs and OLED TVs.

[0005] In order to further optimize the comprehensive manufacturing cost of the overflow down-pull method, promote the industry to move towards higher production capacity and higher generations, achieve wide-width and large-capacity production, and flexibly adapt to the diverse glass substrate thickness requirements, technicians are fully focused on the optimization and innovation of the wetting process. In this process, the wetting effect of the overflow brick and the guide plate becomes the core factor that determines the stability of the guide plate, and its stability is directly related to the stability of product quality, including the uniformity of the side plate flow state and the avoidance of crystallization.

[0006] The optimization of the wetting process involves the fine control of multiple complex variables, including actual process curves such as muffle furnace temperature, lead-out amount, and muffle furnace inclination angle, as well as environmental parameters such as feed temperature, molding system temperature field, and baffle temperature. The combined effect of these parameters often directly affects the stability of the wetting effect, especially in the proximal area, where the large and small material phenomenon and the risk of blocking are significantly increased. During the wetting process, especially when the overflow brick is first heated and docked, the wetting effect is often poor, and the wetting adhesion of the glass on the inclined surface and the drain plate is small. If the drain plate temperature is too low, and the lead-out amount and the overflow brick inclination angle (equivalent to the muffle furnace inclination angle) increase too fast, the glass liquid may accelerate the non-steady-state downward movement, or even fall directly, forming the large and small material phenomenon, and even cause blocking in severe cases. Therefore, ensuring the harmonious unity of the feed temperature, the drain plate temperature and the muffle furnace temperature, as well as the precise coordination of the lead-out amount, viscosity (temperature), and the muffle furnace inclination angle, has become the key to improving the wetting stability.

[0007] Faced with new challenges brought about by increased outflow or high-generation upgrades, such as increased volume of overflow bricks and faster outflow rate, how to optimize the traditional wetting process has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0008] The purpose of the present invention is to provide a wetting process design method for overflow bricks with increased lead-out volume, so as to overcome the problem of unstable wetting effect leading to large and small materials and blockage in traditional wetting processes when meeting high-generation production requirements.

[0009] The present invention solves the above technical problems through the following technical solutions:

[0010] A method for designing a wetting process for overflow bricks with increased lead-out volume comprises the following steps:

[0011] Step 1: construct a mathematical model of the overflow brick wetting process; divide the overflow brick wetting process into a distal wetting process, a proximal wetting process, a middle wetting and high-temperature flushing process, and an overflow brick guide plate preparation process;

[0012] Step 2. According to the far-end overflow width of the overflow brick, select the lead-out target value Y01 of the far-end wetting process; based on the mathematical model of the overflow brick wetting process, calculate the lead-out target value Y02 of the proximal wetting process and the lead-out target value Y03 of the middle wetting and high-temperature flushing process; set the overflow brick inclination angle θ target value J01 and the overflow brick upper MSU temperature target value W01 of the far-end wetting process; set the overflow brick inclination angle θ target value J02 and the overflow brick upper MSU temperature target value W02 of the proximal wetting process; set the overflow brick inclination angle θ target value J03 of the middle wetting and high-temperature flushing process; set the lead-out target value Y04 of the overflow brick lead plate preparation process, the overflow brick inclination angle θ target value J04 and the overflow brick upper MSU temperature target value W03;

[0013] Step 3: Adjust the lead-out amount of the far-end wetting process, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick until the corresponding target value is reached, set the holding time, and complete the design of the far-end wetting process; and adjust the lead-out amount, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process in stages until the corresponding target value is reached, set the holding time, and complete the design of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process;

[0014] At the same time, in the staged adjustment process of the proximal wetting process, the process operations of high temperature maintenance, cooling of the MSU on the overflow brick, adjustment of the glass substrate direction guide roller and increasing the inclination of the overflow brick are carried out; in the staged adjustment process of the middle wetting and high temperature flushing process, the process operations of middle wetting preparation and angle physical flushing, middle wetting maintenance and high temperature flushing are carried out; in the staged adjustment process of the overflow brick guide plate preparation process, the process operations of cooling the MSU on the overflow brick to the molding guide plate temperature, slowly reducing the inclination angle of the overflow brick to the guide plate conditions, installing the peripheral equipment of the molding device and stabilizing the process conditions are carried out.

[0015] Furthermore, in step 1, the mathematical model of the overflow brick wetting process is:

[0016]

[0017] Among them, Q ′ is the wetting lead-out amount of the overflow brick; ρ is the density of the glass liquid; g is the acceleration of gravity; η is the viscosity of the glass liquid corresponding to the MSU temperature on the top of the overflow brick; Φ is the inclination angle of the overflow weir of the overflow brick; θ is the inclination angle of the overflow brick; w is the width of the overflow groove; h is the depth of the overflow brick inlet groove; h z h is the overflow groove depth at any position in the width direction of the overflow surface of the overflow brick; ′is the vertical overflow groove depth corresponding to the overflow brick tilt angle θ; h0 is the vertical overflow groove depth corresponding to the overflow brick inlet when the overflow brick tilt angle θ; α ′ is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick tilt angle θ; α0 is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick inlet when the overflow brick tilt angle θ; X ′ is the cross-sectional coefficient of the overflow tank.

[0018] Further, in step 2, the lead-out target value Y01 of the remote wetting process is selected as follows:

[0019] The lead-out target value Y01 of the remote wetting process is selected based on the high-generation upgrade of the overflow brick and the increase in the design lead-out amount. The selected lead-out target value Y01 of the remote wetting process needs to keep the remote overflow width of the overflow brick at 30-40% of the width of the complete overflow surface of the overflow brick; wherein, the lead-out target value Y01 of the remote wetting process of the overflow brick increases with the high-generation upgrade of the overflow brick and the increase in the design lead-out amount; and the remote overflow width of the overflow brick increases with the increase in the lead-out target value Y01 of the remote wetting process, and the lead-out target value Y01 of the remote wetting process ranges from:

[0020] Y01=240~420±10Kg / Hr.

[0022] Further, in step 2, the range of the target value Y02 of the lead-out amount of the proximal wetting process is: Q J ±5Kg / Hr,

[0023] Among them, Q J is the calculated value of the lead-out amount of the proximal wetting process, specifically:

[0024]

[0025] Furthermore, in step 2, the range of the target value Y03 of the lead-out amount of the middle wetting and high temperature flushing process is: Q M ±5Kg / Hr,

[0026] Among them, Q M The calculated value of the lead-out volume of the middle wetting and high temperature flushing process is:

[0027] .

[0029] Furthermore, in step 2, the overflow brick inclination angle θ target value J01 of the far-end wetting process is 0°, and the MSU temperature target value W01 of the overflow brick upper part is 1265°C; the overflow brick inclination angle θ target value J02 of the proximal wetting process is in the range of 2.2 to 2.4°; the MSU temperature target value W02 of the overflow brick upper part is in the range of 1240 to 1250°C; the overflow brick inclination angle of the middle wetting and high-temperature flushing process is The target value J03 of the degree θ is in the range of 1.7~1.9°; the target value W03 of the MSU temperature on the top of the overflow brick is in the range of 1240~1250℃; the target value Y04 of the lead-out amount of the overflow brick lead plate preparation process is in the range of the mass production design lead-out amount of the production line; the target value J04 of the overflow brick inclination angle θ is 0~0.5°; the target value W03 of the MSU temperature on the top of the overflow brick is in the range of 1225~1235℃.

[0030] Furthermore, in step three, the design of the remote wetting process specifically includes the following steps:

[0031] Adjust the lead-out amount of the remote wetting process to the target value Y01, adjust the MSU temperature on the top of the overflow brick to the target value W01, and adjust the inclination angle of the overflow brick to the target value J01. After reaching the corresponding target values, set the time for maintaining the remote wetting to 11 to 13 hours, so that the glass liquid can completely flow down from the platinum baffle and drain plate at the remote end of the overflow brick and completely cover the drain plate, completing the design of the remote wetting process.

[0032] Furthermore, in step 3, the staged adjustment of the proximal wetting process specifically includes the following steps:

[0033] Keep the MSU temperature on the top of the overflow brick at the target value W01 of the remote wetting process for 8 to 12 hours. During this period, the lead-out amount is continuously increased according to the adjustment speed of the lead-out amount from the target value Y01 of the remote wetting process. At the same time, the overflow brick inclination angle θ is continuously increased according to the adjustment speed of the overflow brick inclination angle θ from the target value J01 of the remote wetting process.

[0034] Continue to increase the lead-out amount according to the adjustment speed of the lead-out amount, and at the same time, reduce the MSU temperature of the upper part of the overflow brick from the target value W01 of the remote wetting process to the target value W02 according to the adjustment speed of the MSU temperature of the upper part of the overflow brick, and increase the overflow brick inclination angle θ to 1.9-2.1° according to the adjustment speed of the overflow brick inclination angle θ;

[0035] Perform the process operation of adjusting the guide roller in the direction of the glass substrate, and maintain the process stability for 12 to 14 hours after completion. During the process stability period, continue to increase the lead-out amount according to the adjustment speed of the lead-out amount, and at the same time, keep the MSU temperature on the top of the overflow brick at the target value W02, and keep the overflow brick tilt angle θ at 1.9 to 2.1°;

[0036] Keep the MSU temperature on the top of the overflow brick at the target value W02, increase the lead-out amount to the target value Y02 according to the adjustment speed of the lead-out amount, increase the overflow brick inclination angle θ to the target value J02 according to the adjustment speed of the overflow brick inclination angle θ, and maintain it for 8 to 12 hours after reaching the corresponding target value, so that the glass liquid completely flows down from the platinum baffle and the drainage plate near the overflow brick, and completely covers the drainage plate;

[0037] Among them, the adjustment speed of the lead-out amount is 5~12Kg / Hr, the adjustment speed of the overflow brick inclination angle θ is 0.05~0.1° / Hr, and the adjustment speed of the MSU temperature on the top of the overflow brick is -(0.8~1.2)℃ / Hr.

[0038] Furthermore, in step 3, the staged adjustment of the middle wetting and high temperature flushing process specifically includes the following steps:

[0039] The MSU temperature of the upper part of the overflow brick is maintained at the target value W02 of the proximal wetting process, the lead-out amount is increased from the target value Y02 of the proximal wetting process to the target value Y03 according to the adjustment speed of the lead-out amount, and the overflow brick inclination angle θ is reduced from the target value J02 of the proximal wetting process to the target value J03 according to the adjustment speed of the overflow brick inclination angle θ. During this adjustment process, the middle wetting preparation and the angle physical flushing process operation are completed;

[0040] Keep the MSU temperature of the upper part of the overflow brick at the target value W02, the lead-out amount at the target value Y03, the overflow brick tilt angle θ at the target value J03, and set the holding time to 8 to 12 hours. During this adjustment process, the middle part wetting maintenance and high temperature flushing process operations are completed;

[0041] Among them, the adjustment speed of the lead-out amount is 8 to 12 kg / Hr, and the adjustment speed of the overflow brick inclination angle θ is -(0.05 to 0.1)° / Hr.

[0042] Furthermore, in step three, the staged adjustment of the overflow brick guide plate preparation process specifically includes the following steps:

[0043] The MSU temperature of the upper part of the overflow brick is reduced from the target value W02 of the near-end wetting process to the target value W03 according to the adjustment speed of the MSU temperature of the upper part of the overflow brick. At the same time, the lead-out amount is continuously increased from the target value Y03 of the middle wetting and high-temperature flushing process according to the adjustment speed of the lead-out amount; the overflow brick inclination angle θ is continuously reduced from the target value J03 of the middle wetting and high-temperature flushing process according to the adjustment speed of the overflow brick inclination angle θ;

[0044] According to the adjustment speed of the lead-out amount, the lead-out amount is increased to the target value Y04, so that the MSU temperature on the upper part of the overflow brick is maintained at the target value W03, and according to the adjustment speed of the overflow brick inclination angle θ, the overflow brick inclination angle θ is reduced to the target value J04, and at the same time, the installation process operation of the peripheral equipment of the molding device is completed;

[0045] Keep the MSU temperature on the top of the overflow brick at the target value W04, the lead-out amount at the target value Y04, and the overflow brick tilt angle θ at the target value J04 for 8 to 12 hours to complete the process operation with stable process conditions.

[0046] Among them, the adjustment speed of the lead-out amount is 8~12Kg / Hr, the adjustment speed of the overflow brick inclination angle θ is -(0.05~0.1)° / Hr, and the adjustment speed of the MSU temperature on the top of the overflow brick is -(0.8~1.2)℃ / Hr.

[0047] Compared with the prior art, the positive and progressive effects of the present invention are:

[0048] The present invention provides a design method for the wetting process of overflow bricks with increased lead-out volume. Based on the principle of the overflow brick wetting process, a mathematical model of the wetting process is established to divide the overflow brick wetting process into four stages: distal wetting, proximal wetting, middle wetting and high-temperature flushing, and overflow brick lead plate preparation. The MSU temperature of the upper part of the overflow brick, the speed and holding time of adjusting the inclination angle of the muffle furnace, and the speed and holding time of increasing the lead-out volume are planned in detail in each stage. By adopting the design method of the present invention, the changes of key parameters such as the lead-out volume, the inclination angle of the muffle furnace, and the MSU temperature of the upper part of the overflow brick during the wetting process can be intuitively presented through a curve, providing strong technical support for the design, optimization, and verification of the wetting process of high-generation overflow bricks with large lead-out volume, reducing the risk of the wetting process, and thereby improving the stability of the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0050] Figure 1 It is a schematic diagram of the overflow system structure of the present invention;

[0051] Figure 2 This is a schematic diagram of the overflow pull-down structure of the present invention;

[0052] Figure 3 It is a schematic diagram of the distribution of the wetting lead-out amount at the far end of the overflow brick and the overflow state of the present invention;

[0053] Figure 4 It is a schematic diagram of the distribution of the wetted lead-out amount at the proximal end and the overflow state of the overflow brick of the present invention;

[0054] Figure 5 It is a schematic diagram of the distribution of the flushing and wetting lead-out amount and the overflow state of the overflow brick part of the present invention;

[0055] Figure 6 A schematic diagram of the lead-out amount distribution and overflow state is prepared for the overflow brick lead plate of the present invention;

[0056] Figure 7 It is a schematic diagram of the wetting stage division and process of the overflow brick according to an embodiment of the present invention;

[0057] Figure 8 is a phase parameter diagram of an embodiment of the present invention;

[0058] In the figure: 1- overflow brick; 2- overflow trough; 3- glass liquid feeding device; 4- overflow brick root; 5- drainage plate; 6- molded glass substrate; 7- pulling direction of glass substrate; W G -Glass substrate specification width; W Y -Glass substrate lead plate width; 8-1 is the width of the complete overflow surface of the overflow brick; 8-2 is the far-end overflow width of the overflow brick. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0060] See also Figure 1 The overflow system is composed of an overflow brick 1 and a glass liquid feeding device 3. An overflow trough 2 is provided in the overflow brick 1, and the bottom of the overflow brick 1 is the overflow brick root 4; when the glass substrate is manufactured by molten overflow, the glass liquid melted by the glass melting furnace is supplied to the glass liquid feeding device 3 in the molten overflow molding device in the molding process, and overflows along the overflow trough 2 through both sides of the overflow brick 1, and enters the molding area from below the overflow brick root 4 to form a glass substrate, wherein the glass liquid is from below the overflow brick root 4 to the position of the target thickness of the glass substrate as the molding area, and then enters the annealing area. In the process of the glass melt advancing from the proximal end to the distal end of the overflow trough, it is pushed by the mass force and pressure in the running direction, overcomes the laminar viscous resistance and flows downward from the overflow weir. The fluid dynamics equation based on this principle integrates the effects of the above-mentioned forces and is the basis for the design of the overflow trough. On the vertical surface of the overflow, the mass force and pressure are large enough, and the viscosity is relatively low, the influence of the lateral surface tension is small, and there is almost no lateral contraction; on the inclined surface, the mass force and pressure component along the inclined surface become significantly smaller, and the viscosity gradually increases, the effect of the lateral surface tension becomes prominent, and obvious lateral contraction occurs. Therefore, a platinum material drainage plate 5 is set at the far and near ends of the inclined surface of the overflow brick to partially resist the lateral contraction of the glass. Figure 1 In the figure, the portion of the overflow brick close to the glass liquid feeding device 3 is the proximal end, the portion far from the glass liquid feeding device 3 is the distal end, and the portion between the proximal end and the distal end is the middle portion.

[0061] See also Figure 2 The guide plate serves as the molding basis of the glass substrate. During the process of pulling down the glass substrate, the molded glass substrate 5 moves downward along the glass substrate pulling direction 6. G is the width of the glass substrate, W Y is the width of the glass substrate lead.

[0062] Overflow brick wetting: The glass liquid completely and evenly covers the overflow brick and the drain plate to achieve normal drain. After wetting, the molten glass flowing down from the platinum baffle / drain plate should fit tightly (wet) the baffle, and the overflow glass on both sides should have better adhesion. The coordination between the wetting lead-out amount, the overflow brick tilt angle, i.e. the muffle furnace tilt angle, the MSU temperature on the top of the overflow brick (MSU is the temperature value measured by the MSU temperature sensor on the top of the overflow brick) and the rate of change is crucial (especially at the proximal end) to ensure the wetting effect, no material separation, and no material blockage.

[0063] Overflow brick flushing and exhaust: The voids and grain boundary gaps in the overflow brick products will capture gas; the rough surface and pore microstructure of the overflow brick will absorb a certain amount of gas and impurity particles. In the initial stage of the production cycle, when the glass melt contacts the surface of the overflow brick, gas and impurities will enter its interior to form defects. The overflow bricks that have been finely processed and surface polished must undergo initial flushing, exhaust and wetting before normal plate introduction. If the initial flushing, exhaust and wetting effects are not good, the exhaust and particle removal cannot be effectively carried out in a short time, which may lead to high defects in the glass substrate for a long period of time. By increasing the temperature of the glass melt to reduce the viscosity, it is helpful for the glass melt to flush, exhaust and wet the surface of the overflow brick, promote gas release, impurity particles to float and be discharged or escape with the flow of glass. In order to speed up the flow of glass melt on the surface of the overflow trough, the overflow trough is tilted at a certain angle relative to the normal plate introduction operation. The inclination angle and change rate of the muffle furnace are the key links to ensure the flushing and exhaust effects.

[0064] Wetting process flow: distal → proximal → middle → guide plate preparation. With the increase of the lead-out amount or the upgrade of high generation, the volume of the overflow brick increases, the lead-out amount or speed increases, and the wetting process is significantly different from the traditional one. Distal wetting: The process conditions are basically the same, the lead-out amount is appropriately increased, and the high temperature is maintained; proximal wetting: Considering the gradual approach and stabilization of the material rushing from the distal end to the proximal end and the complete wetting, observe the flow state and coating state of the proximal baffle / drainage plate, and the lead-out amount and the inclination angle of the overflow brick (equivalent to the inclination angle of the muffle furnace) slowly increase; middle wetting / flushing: Maintain high temperature, the lead-out amount gradually increases, the inclination angle of the overflow brick slowly decreases, first perform middle wetting / flushing, and then continue to stabilize in the guide plate preparation stage. Among them, the coordination of feed temperature, drain plate temperature and MSU temperature is crucial.

[0065] Attached Figures 3 to 6The horizontal axis in corresponds to the length of the overflow brick. Figure 3 , is a schematic diagram of the distribution of the wetting lead-out amount and the overflow state of the overflow brick at the far end. The overflow brick has an inclination angle of 0° and an MSU temperature of 1265°C. The lead-out amount target value of the far-end wetting process is selected based on the high-generation upgrade of the overflow brick and the increase in the designed lead-out amount. The selected lead-out amount target value of the far-end wetting process needs to keep the far-end overflow width of the overflow brick at 30-40% of the width of the complete overflow surface of the overflow brick; among them, the lead-out amount target value of the far-end wetting process of the overflow brick increases with the high-generation upgrade of the overflow brick and the increase in the designed lead-out amount; and the far-end overflow width of the overflow brick increases with the increase in the lead-out amount target value of the far-end wetting process. The far-end wetting process needs to confirm that the glass liquid completely flows down from the far-end platinum baffle and drain plate of the overflow brick and completely covers the drain plate; therefore, the far-end wetting is maintained for 11-13 hours for stabilization.

[0066] See also Figure 4 , which is a schematic diagram of the distribution of the proximal wetting and overflow state of the overflow brick. The proximal wetting process of the overflow brick includes five stages: wetting preparation / high temperature maintenance, wetting preparation / MSU cooling, wetting preparation / adjustment of the glass substrate direction guide roller (i.e. the commonly used term "1# roller" in actual production, used to guide the flow direction of the glass substrate), muffle furnace inclination increase and proximal wetting maintenance. During the proximal wetting maintenance, the MSU temperature on the top of the overflow brick is maintained at 1245℃; the lead-out amount is maintained at Q J ±5Kg / Hr; the overflow brick tilt angle is maintained at 2.3°; the wetting retention time is set to 8 to 12 hours. During the wetting process, it is necessary to ensure that the glass liquid completely flows down from the platinum baffle and the drainage plate near the overflow brick, and completely covers the drainage plate.

[0067] See also Figure 5 , which is a schematic diagram of the distribution of the overflow state and the wetting and wetting lead-out amount of the overflow brick. The process flow of wetting and high-temperature flushing of the overflow brick in the middle includes the middle wetting preparation and angled physical flushing, middle wetting maintenance and high-temperature flushing. The MSU temperature of the upper part of the overflow brick is kept at 1245℃; the lead-out amount is kept at Q M ±5Kg / Hr; the inclination angle of the overflow brick is maintained at 1.8°; the wetting and flushing duration is 8 to 12 hours.

[0068] See also Figure 6, which is a schematic diagram of the distribution of the lead-out amount and the overflow state of the overflow brick lead-in plate preparation. Overflow brick lead-in plate process conditions: the lead-out amount is the designed lead-out amount or the project planned lead-out amount, that is, the lead-out amount target value Y04; the overflow brick inclination angle is 0~0.5°, that is, the overflow brick inclination angle θ target value J04; the MSU temperature is the lead-in plate forming temperature, that is, the MSU temperature target value W03 on the upper part of the overflow brick. The process flow for establishing the overflow brick lead-in plate process conditions includes: (1) lead-in plate preparation, MSU cooling to the forming lead-in plate temperature (during this period, the process cooling water pipe, etc. can be adjusted); (2) lead-in plate preparation, the overflow brick inclination angle is slowly reduced to the lead-in plate condition; (3) lead-in plate preparation, the peripheral equipment of the forming device is installed; (4) lead-in plate preparation, the process conditions are stable. The duration is 8~12 hours.

[0069] With the increase of the lead-out volume and the upgrade of high-generation, the volume of the overflow brick increases, the lead-out volume or fluidity increases, and the wetting process is significantly different from the traditional one. The distal wetting is not much different from the traditional process, the lead-out volume is appropriately increased, and the high temperature is maintained; the proximal wetting should fully consider the gradual approach and stabilization of the material rushing from the distal end to the proximal end and the complete wetting, and observe the proximal baffle / drainage plate flow state and coating state in real time, and the lead-out volume and the overflow brick inclination angle increase slowly; the middle wetting and flushing should maintain high temperature, the lead-out volume gradually increases / the overflow brick inclination angle gradually decreases for physical flushing, and it should be kept for a long enough time to stabilize, and then continue to stabilize in the lead-out plate preparation stage.

[0070] See also Figure 7 , which is an example diagram of the wetting stage division and process design of the overflow brick in an embodiment of the present invention. The wetting process is divided into 12 stages in total; the starting positions of the curves shown in the figure are, from top to bottom, the MSU temperature process curve of the upper part of the overflow brick, the muffle furnace (overflow brick) inclination angle curve, and the MSU temperature and lead-out amount curve of the upper part of the overflow brick.

[0071] The present invention is described in further detail below in conjunction with embodiments:

[0072] Step 1: construct a mathematical model of the overflow brick wetting process; divide the overflow brick wetting process into a distal wetting process, a proximal wetting process, a middle wetting and high-temperature flushing process, and an overflow brick guide plate preparation process;

[0073] 1.1. Constructing mathematical model of overflow brick wetting process:

[0074]

[0075] Among them, Q ′ is the wetting lead-out amount of the overflow brick; ρ is the density of the glass liquid; g is the acceleration of gravity; η is the viscosity of the glass liquid corresponding to the MSU temperature on the top of the overflow brick; Φ is the inclination angle of the overflow weir of the overflow brick; θ is the inclination angle of the overflow brick; w is the width of the overflow groove; h is the depth of the overflow brick inlet groove; h zh is the overflow groove depth at any position in the width direction of the overflow surface of the overflow brick; ′ is the vertical overflow groove depth corresponding to the overflow brick tilt angle θ; h0 is the vertical overflow groove depth corresponding to the overflow brick inlet when the overflow brick tilt angle θ; α ′ is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick tilt angle θ; α0 is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick inlet when the overflow brick tilt angle θ; X ′ is the cross-sectional coefficient of the overflow tank.

[0076] 1.2. The overflow brick wetting process is divided into the distal wetting process, the proximal wetting process, the middle wetting and high-temperature flushing process and the overflow brick guide plate preparation process:

[0077] 1.2.1. Distal wetting

[0078] 1.2.2. Proximal wetting: Wetting preparation, high temperature maintenance; Wetting preparation, MSU cooling; Wetting preparation, adjustment of the glass substrate direction guide roller (by 1# roller); Wetting preparation, increase of the muffle furnace inclination; Proximal wetting maintenance.

[0079] 1.2.3. Wetting and high-temperature flushing of the middle part of overflow bricks: preparation for wetting the middle part and physical flushing at an angle; wetting maintenance and high-temperature flushing of the middle part.

[0080] 1.2.4. Establishment of overflow brick lead-in process conditions: lead-in preparation, MSU cooling down to the forming lead-in temperature; lead-in preparation, muffle furnace tilting angle slowly down to lead-in conditions; lead-in preparation, forming device peripheral equipment installation; lead-in preparation, process conditions stabilization.

[0081] Step 2. According to the far-end overflow width of the overflow brick, select the lead-out target value Y01 of the far-end wetting process; based on the mathematical model of the overflow brick wetting process, calculate the lead-out target value Y02 of the proximal wetting process and the lead-out target value Y03 of the middle wetting and high-temperature flushing process; set the overflow brick inclination angle θ target value J01 and the overflow brick upper MSU temperature target value W01 of the far-end wetting process; set the overflow brick inclination angle θ target value J02 and the overflow brick upper MSU temperature target value W02 of the proximal wetting process; set the overflow brick inclination angle θ target value J03 of the middle wetting and high-temperature flushing process; set the lead-out target value Y04 of the overflow brick lead plate preparation process, the overflow brick inclination angle θ target value J04 and the overflow brick upper MSU temperature target value W03;

[0082] 2.1. According to the far-end overflow width of the overflow brick, select the lead-out target value Y01 of the far-end wetting process:

[0083] The lead-out target value Y01 of the remote wetting process is selected based on the high-generation upgrade of the overflow brick and the increase in the design lead-out amount. The selected lead-out target value Y01 of the remote wetting process needs to keep the remote overflow width of the overflow brick at 30-40% of the width of the complete overflow surface of the overflow brick; wherein, the lead-out target value Y01 of the remote wetting process of the overflow brick increases with the high-generation upgrade of the overflow brick and the increase in the design lead-out amount; and the remote overflow width of the overflow brick increases with the increase in the lead-out target value Y01 of the remote wetting process, and the lead-out target value Y01 of the remote wetting process ranges from:

[0084] Y01=240~420±10Kg / Hr

[0085] In this embodiment, Y01=320 Kg / Hr is selected.

[0086] 2.2. Based on the mathematical model of overflow brick wetting process, the target value of the lead-out amount Y02 of the proximal wetting process and the target value of the lead-out amount Y03 of the middle wetting and high-temperature flushing process are calculated:

[0087] 2.2.1: Calculate the target value of the lead-out amount Y02 for the proximal wetting process

[0088] The range of the lead-out target value Y02 of the proximal wetting process is: Q J ±5Kg / Hr,

[0089] Calculation of overflow brick proximal wetting process lead-out quantity Q J

[0090]

[0091] 2.2.2: Calculate the target value of the lead-out amount Y03 for the middle wetting and high temperature flushing process

[0092] The range of the target value of the lead-out amount Y03 for the middle wetting and high temperature flushing process is: Q M ±5Kg / Hr,

[0093]

[0094] 2.3. Set the overflow brick inclination angle θ target value J01 and the overflow brick upper MSU temperature target value W01 for the far-end wetting process; set the overflow brick inclination angle θ target value J02 and the overflow brick upper MSU temperature target value W02 for the near-end wetting process; set the overflow brick inclination angle θ target value J03 for the middle wetting and high-temperature flushing process; set the lead-out amount target value Y04, the overflow brick inclination angle θ target value J04 and the overflow brick upper MSU temperature target value W03 for the overflow brick lead plate preparation process;

[0095] Among them, J01=0°, W01=1265℃; J02=2.3°, W02=1245℃; J03=1.8°; Y04=1290 (production line mass production design lead-out quantity), J04=0°, W03=1230℃.

[0096] Step 3: Adjust the lead-out amount of the far-end wetting process, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick until the corresponding target value is reached, set the holding time, and complete the design of the far-end wetting process; and adjust the lead-out amount, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process in stages until the corresponding target value is reached, set the holding time, and complete the design of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process;

[0097] At the same time, in the staged adjustment process of the proximal wetting process, the process operations of high temperature maintenance, cooling of the MSU on the overflow brick, adjustment of the glass substrate direction guide roller and increasing the inclination of the overflow brick are carried out; in the staged adjustment process of the middle wetting and high temperature flushing process, the process operations of middle wetting preparation and angle physical flushing, middle wetting maintenance and high temperature flushing are carried out; in the staged adjustment process of the overflow brick guide plate preparation process, the process operations of cooling the MSU on the overflow brick to the molding guide plate temperature, slowly reducing the inclination angle of the overflow brick to the guide plate conditions, installing the peripheral equipment of the molding device and stabilizing the process conditions are carried out.

[0098] 3.1. The design of the remote wetting process specifically includes:

[0099] Adjust the lead-out amount of the remote wetting process to the target value Y01=320Kg / Hr, adjust the MSU temperature on the top of the overflow brick to the target value W01=1265℃ and adjust the inclination angle of the overflow brick to the target value J01=0°. After reaching the corresponding target values, set the time for maintaining the remote wetting to 12 hours, so that the glass liquid can completely flow down from the platinum baffle and drain plate at the remote end of the overflow brick and completely cover the drain plate to complete the design of the remote wetting process.

[0100] During the remote wetting process stage, the temperature of the upper part of the molding zone (TU) must be maintained at 1070±5°C, and the temperature of the middle and lower parts of the molding zone (TM / TL) must be maintained at 950±5°C.

[0101] 3.2. The design of the proximal wetting process specifically includes:

[0102] 3.2.1: Wetting preparation, high temperature maintenance: MSU temperature is 1265℃; the increase rate of the lead-out amount is 5-12Kg / Hr; the inclination angle of the muffle furnace increases from 0° to 1.0°, and the increase rate of the inclination angle of the muffle furnace is 0.05-0.1° / Hr.

[0103] 3.2.2: Wetting preparation, MSU cooling: The MSU temperature of the upper part of the overflow brick drops from 1265℃ to 1245℃, and the cooling rate is 0.8~1.2℃ / Hr; the increase rate of the lead-out amount is 5~12Kg / Hr; the inclination angle of the muffle furnace increases from 1.0° to 2.0°, and the increase rate of the inclination angle of the muffle furnace is 0.05° / Hr; at the same time, the temperature of the upper part of the forming zone (TU) drops from 1070±5℃ to 1030±5℃, and the temperature of the middle and lower parts of the forming zone (TM / TL) drops from 950±5℃ to 930±5℃.

[0104] 3.2.3: Wetting preparation, adjustment of the guide roller in the direction of the glass substrate (by roller 1#): maintain the MSU temperature on the top of the overflow brick at 1245°C; the increase rate of the lead-out amount is 5-12Kg / Hr; the inclination angle of the muffle furnace is maintained at 2.0°; and then perform the adjustment process operation of the guide roller in the direction of the glass substrate. After completion, maintain the process stability for 12-14 hours. During the process stability period, continue to increase the lead-out amount according to the adjustment speed of the lead-out amount. At the same time, keep the MSU temperature on the top of the overflow brick at the target value W02, and keep the inclination angle θ of the overflow brick at 1.9-2.1°; at the same time, keep the temperature of the upper part of the molding area (TU) at 1030±5°C, and the temperature of the middle and lower parts of the molding area (TM / TL) at 930±5°C.

[0105] 3.2.4: Wetting preparation, increase the inclination of the muffle furnace: keep the MSU temperature on the top of the overflow brick at 1245℃; increase the lead-out amount to Q J ±5Kg / Hr, the increase rate is 5Kg / Hr; the inclination angle of the muffle furnace increases from 2.0° to 2.3°, and the increase rate of the inclination angle of the muffle furnace is 0.05° / Hr; at the same time, the temperature of the upper part of the molding zone (TU) is maintained at 1030±5℃, and the temperature of the middle and lower parts of the molding zone (TM / TL) is maintained at 930±5℃.

[0106] 3.2.5: Proximal wetting maintenance: Keep the MSU temperature on the top of the overflow brick at 1245℃; keep the lead volume at Q J ±5Kg / Hr; the inclination angle of the muffle furnace is maintained at 2.3°; at the same time, the temperature of the upper part of the molding zone (TU) is maintained at 1030±5℃, and the temperature of the middle and lower parts of the molding zone (TM / TL) is maintained at 930±5℃.

[0107] 3.3. The design of the middle wetting and high temperature flushing process specifically includes:

[0108] 3.3.1: Middle wetting preparation and angled physical flushing: Keep the MSU temperature on the top of the overflow brick at 1245℃; increase the lead-out volume to Q M±5Kg / Hr, the speed increasing rate is 8~12Kg / Hr; the inclination angle of the muffle furnace is reduced from 2.3° to 1.8°, and the speed decreasing rate of the inclination angle of the muffle furnace is 0.05° / Hr; at the same time, the temperature of the upper part (TU) of the molding zone is maintained at 1030±5℃, and the temperature of the middle and lower parts (TM / TL) of the molding zone is maintained at 930±5℃.

[0109] 3.3.2: Middle part wetting and high temperature flushing: Keep the MSU temperature on the top of the overflow brick at 1245℃; keep the lead volume at Q M ±5Kg / Hr; the inclination angle of the muffle furnace is maintained at 1.8°; the middle part wetting and high temperature flushing are maintained for 8 to 12 hours; at the same time, the temperature of the upper part of the molding zone (TU) is maintained at 1030±5℃, and the temperature of the middle and lower parts of the molding zone (TM / TL) is maintained at 930±5℃.

[0110] 3.4. The design of the overflow brick guide plate preparation process specifically includes:

[0111] 3.4.1: Guide plate preparation, MSU cooling to the forming guide plate temperature: the MSU temperature on the overflow brick drops from 1245°C to the forming guide plate temperature (1230°C in this embodiment), and the cooling rate is 0.8~1.2°C / Hr; the lead-out amount increase rate is 8~12Kg / Hr; the inclination angle of the muffle furnace continues to decrease, and the deceleration is 0.05° / Hr; at the same time, the temperature of the upper part of the forming zone (TU) is maintained at 1030±5°C, and the temperature of the middle and lower parts of the forming zone (TM / TL) is maintained at 930±5°C.

[0112] 3.4.2: Prepare the guide plate, and slowly reduce the inclination angle of the muffle furnace to the guide plate conditions: keep the MSU temperature of the upper part of the overflow brick at the forming guide plate temperature of 1230℃; the increase rate of the lead-out amount is 8~12Kg / Hr; the inclination angle of the muffle furnace continues to decrease to the forming guide plate angle of 0~0.5°, and the deceleration rate is 0.05° / Hr; at the same time, the temperature of the upper part of the forming zone (TU) is maintained at 1030±5℃, and the temperature of the middle and lower parts of the forming zone (TM / TL) is maintained at 930±5℃.

[0113] 3.4.3: Preparation of lead plate and installation of peripheral equipment of forming device: Maintain the MSU temperature of the upper part of the overflow brick at the forming lead plate temperature of 1230℃; increase the lead-out amount to the designed lead-out amount or the project planned lead-out amount, which is 1290Kg / Hr in this embodiment, and the lead-out increase rate is 8~12Kg / Hr; maintain the inclination angle of the muffle furnace at the forming lead plate angle of 0~0.5°; at the same time, maintain the temperature of the upper part (TU) of the forming zone at 1030±5℃, and the temperature of the middle and lower parts (TM / TL) of the forming zone at 930±5℃.

[0114] 3.4.4: Preparation of guide plate, stable process conditions: keep the MSU temperature of the upper part of the overflow brick at the forming guide plate temperature of 1230℃; the lead-out amount is maintained at the designed lead-out amount or the project planned lead-out amount of 1290Kg / Hr; the inclination angle of the muffle furnace is maintained at the forming guide plate angle of 0~0.5°, and the holding time is 8~12h; at the same time, the temperature of the upper part of the forming zone (TU) is maintained at 1030±5℃, and the temperature of the middle and lower parts of the forming zone (TM / TL) is maintained at 930±5℃.

[0115] Based on the above method, the wetting process design of high-generation large-lead overflow bricks was completed and submitted for production line process implementation. After wetting and lead-in board preparation were completed, the lead-in board process adjustment was started to achieve product quality goals.

[0116] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A wetting process design method for overflow bricks with increased outflow, characterized in that: The steps include: Step 1: construct a mathematical model of the overflow brick wetting process; divide the overflow brick wetting process into a distal wetting process, a proximal wetting process, a middle wetting and high-temperature flushing process, and an overflow brick guide plate preparation process; Step 2. According to the far-end overflow width of the overflow brick, select the lead-out target value Y01 of the far-end wetting process; based on the mathematical model of the overflow brick wetting process, calculate the lead-out target value Y02 of the proximal wetting process and the lead-out target value Y03 of the middle wetting and high-temperature flushing process; set the overflow brick inclination angle θ target value J01 and the overflow brick upper MSU temperature target value W01 of the far-end wetting process; set the overflow brick inclination angle θ target value J02 and the overflow brick upper MSU temperature target value W02 of the proximal wetting process; set the overflow brick inclination angle θ target value J03 of the middle wetting and high-temperature flushing process; set the lead-out target value Y04 of the overflow brick lead plate preparation process, the overflow brick inclination angle θ target value J04 and the overflow brick upper MSU temperature target value W03; Step 3: Adjust the lead-out amount of the far-end wetting process, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick until the corresponding target value is reached, set the holding time, and complete the design of the far-end wetting process; and adjust the lead-out amount, the overflow brick inclination angle θ, and the MSU temperature on the top of the overflow brick of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process in stages until the corresponding target value is reached, set the holding time, and complete the design of the proximal wetting process, the middle wetting and high-temperature flushing process, and the overflow brick lead plate preparation process; At the same time, in the staged adjustment process of the proximal wetting process, the process operations of high temperature maintenance, cooling of the MSU on the overflow brick, adjustment of the glass substrate direction guide roller and increasing the inclination of the overflow brick are carried out; in the staged adjustment process of the middle wetting and high temperature flushing process, the process operations of middle wetting preparation and angle physical flushing, middle wetting maintenance and high temperature flushing are carried out; in the staged adjustment process of the overflow brick guide plate preparation process, the process operations of cooling the MSU on the overflow brick to the molding guide plate temperature, slowly reducing the inclination angle of the overflow brick to the guide plate conditions, installing the peripheral equipment of the molding device and stabilizing the process conditions are carried out.

2. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 1, the mathematical model of overflow brick wetting process is: Among them, Q ′ is the wetting lead-out amount of the overflow brick; ρ is the density of the glass liquid; g is the acceleration of gravity; η is the viscosity of the glass liquid corresponding to the MSU temperature on the top of the overflow brick; Φ is the inclination angle of the overflow weir of the overflow brick; θ is the inclination angle of the overflow brick; w is the width of the overflow groove; h is the depth of the overflow brick inlet groove; h z h is the overflow groove depth at any position in the width direction of the overflow surface of the overflow brick; ′ is the vertical overflow groove depth corresponding to the overflow brick tilt angle θ; h0 is the vertical overflow groove depth corresponding to the overflow brick inlet when the overflow brick tilt angle θ; α ′ is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick tilt angle θ; α0 is the vertical overflow groove depth and groove width ratio corresponding to the overflow brick inlet when the overflow brick tilt angle θ; X ′ is the cross-sectional coefficient of the overflow tank.

3. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 2, the lead-out target value Y01 of the remote wetting process is selected as follows: The lead-out target value Y01 of the remote wetting process is selected based on the high-generation upgrade of the overflow brick and the increase in the design lead-out amount. The selected lead-out target value Y01 of the remote wetting process needs to keep the remote overflow width of the overflow brick at 30-40% of the width of the complete overflow surface of the overflow brick; wherein, the lead-out target value Y01 of the remote wetting process of the overflow brick increases with the high-generation upgrade of the overflow brick and the increase in the design lead-out amount; and the remote overflow width of the overflow brick increases with the increase in the lead-out target value Y01 of the remote wetting process, and the lead-out target value Y01 of the remote wetting process ranges from: Y01=240~420±10Kg / Hr.

4. The wetting process design method for overflow bricks with increased outflow according to claim 2 is characterized in that: In step 2, the target value of the lead-out amount Y02 of the proximal wetting process is in the range of: Q J ±5Kg / Hr, Among them, Q J is the calculated value of the lead-out amount of the proximal wetting process, specifically:

5. The wetting process design method for overflow bricks with increased outflow according to claim 2 is characterized in that: In step 2, the target value of the lead-out amount Y03 of the middle wetting and high temperature flushing process is in the range of: Q M ±5Kg / Hr, Among them, Q M The calculated value of the lead-out volume of the middle wetting and high temperature flushing process is:

6. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 2, the overflow brick tilt angle θ target value J01 of the far-end wetting process is 0°, and the MSU temperature target value W01 of the overflow brick upper part is 1265°C; the overflow brick tilt angle θ target value J02 of the proximal wetting process is in the range of 2.2-2.4°; the MSU temperature target value W02 of the overflow brick upper part is in the range of 1240-1250°C; the overflow brick tilt angle θ target value of the middle wetting and high-temperature flushing process is The value range of the standard value J03 is 1.7~1.9°; the value range of the target value W03 of the MSU temperature on the top of the overflow brick is 1240~1250℃; the value range of the target value Y04 of the lead-out amount of the overflow brick lead plate preparation process is the design lead-out amount of the production line mass production; the target value J04 of the overflow brick inclination angle θ is 0~0.5°; the value range of the target value W03 of the MSU temperature on the top of the overflow brick is 1225~1235℃.

7. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 3, the design of the remote wetting process specifically includes the following steps: Adjust the lead-out amount of the remote wetting process to the target value Y01, adjust the MSU temperature on the top of the overflow brick to the target value W01, and adjust the inclination angle of the overflow brick to the target value J01. After reaching the corresponding target values, set the time for maintaining the remote wetting to 11 to 13 hours, so that the glass liquid can completely flow down from the platinum baffle and drain plate at the remote end of the overflow brick and completely cover the drain plate, completing the design of the remote wetting process.

8. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 3, the staged adjustment of the proximal wetting process specifically includes the following steps: Keep the MSU temperature on the top of the overflow brick at the target value W01 of the remote wetting process for 8 to 12 hours. During this period, the lead-out amount is continuously increased according to the adjustment speed of the lead-out amount from the target value Y01 of the remote wetting process. At the same time, the overflow brick inclination angle θ is continuously increased according to the adjustment speed of the overflow brick inclination angle θ from the target value J01 of the remote wetting process. Continue to increase the lead-out amount according to the adjustment speed of the lead-out amount, and at the same time, reduce the MSU temperature of the upper part of the overflow brick from the target value W01 of the remote wetting process to the target value W02 according to the adjustment speed of the MSU temperature of the upper part of the overflow brick, and increase the overflow brick inclination angle θ to 1.9-2.1° according to the adjustment speed of the overflow brick inclination angle θ; Perform the process operation of adjusting the guide roller in the direction of the glass substrate, and maintain the process stability for 12 to 14 hours after completion. During the process stability period, continue to increase the lead-out amount according to the adjustment speed of the lead-out amount, and at the same time, keep the MSU temperature on the top of the overflow brick at the target value W02, and keep the overflow brick tilt angle θ at 1.9 to 2.1°; Keep the MSU temperature on the top of the overflow brick at the target value W02, increase the lead-out amount to the target value Y02 according to the adjustment speed of the lead-out amount, increase the overflow brick inclination angle θ to the target value J02 according to the adjustment speed of the overflow brick inclination angle θ, and maintain it for 8 to 12 hours after reaching the corresponding target value, so that the glass liquid completely flows down from the platinum baffle and the drainage plate near the overflow brick, and completely covers the drainage plate; Among them, the adjustment speed of the lead-out amount is 5~12Kg / Hr, the adjustment speed of the overflow brick inclination angle θ is 0.05~0.1° / Hr, and the adjustment speed of the MSU temperature on the top of the overflow brick is -(0.8~1.2)℃ / Hr.

9. The method for designing a wetting process for overflow bricks with increased outflow according to claim 1, characterized in that: In step 3, the staged adjustment of the middle wetting and high temperature flushing process specifically includes the following steps: The MSU temperature of the upper part of the overflow brick is maintained at the target value W02 of the proximal wetting process, the lead-out amount is increased from the target value Y02 of the proximal wetting process to the target value Y03 according to the adjustment speed of the lead-out amount, and the overflow brick inclination angle θ is reduced from the target value J02 of the proximal wetting process to the target value J03 according to the adjustment speed of the overflow brick inclination angle θ. During this adjustment process, the middle wetting preparation and the angle physical flushing process operation are completed; Keep the MSU temperature of the upper part of the overflow brick at the target value W02, the lead-out amount at the target value Y03, the overflow brick tilt angle θ at the target value J03, and set the holding time to 8 to 12 hours. During this adjustment process, the middle part wetting maintenance and high temperature flushing process operations are completed; Among them, the adjustment speed of the lead-out amount is 8 to 12 kg / Hr, and the adjustment speed of the overflow brick inclination angle θ is -(0.05 to 0.1)° / Hr.

10. The wetting process design method for overflow bricks with increased outflow according to claim 1 is characterized in that: In step 3, the staged adjustment of the overflow brick guide plate preparation process specifically includes the following steps: The MSU temperature of the upper part of the overflow brick is reduced from the target value W02 of the near-end wetting process to the target value W03 according to the adjustment speed of the MSU temperature of the upper part of the overflow brick. At the same time, the lead-out amount is continuously increased from the target value Y03 of the middle wetting and high-temperature flushing process according to the adjustment speed of the lead-out amount; the overflow brick inclination angle θ is continuously reduced from the target value J03 of the middle wetting and high-temperature flushing process according to the adjustment speed of the overflow brick inclination angle θ; According to the adjustment speed of the lead-out amount, the lead-out amount is increased to the target value Y04, so that the MSU temperature on the upper part of the overflow brick is maintained at the target value W03, and according to the adjustment speed of the overflow brick inclination angle θ, the overflow brick inclination angle θ is reduced to the target value J04, and at the same time, the installation process operation of the peripheral equipment of the molding device is completed; Keep the MSU temperature on the top of the overflow brick at the target value W04, the lead-out amount at the target value Y04, and the overflow brick tilt angle θ at the target value J04 for 8 to 12 hours to complete the process operation with stable process conditions. Among them, the adjustment speed of the lead-out amount is 8~12Kg / Hr, the adjustment speed of the overflow brick inclination angle θ is -(0.05~0.1)° / Hr, and the adjustment speed of the MSU temperature on the top of the overflow brick is -(0.8~1.2)℃ / Hr.

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