Process control method for glass plate tempering process

A technology of process and control method, which is applied in glass tempering, glass manufacturing equipment, temperature control by electric method, etc., can solve the problems of increased glass scrap rate, waste of resources, inaccurate sensor measurement, etc., and avoid measurement The effect of inconvenience, easy monitoring, and simple system structure

Active Publication Date: 2020-08-28
洛阳兰迪智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the prior art, when the sensor is used to directly monitor the surface temperature of the glass plate, the sensor is easily affected by the ambient temperature of the heating furnace, resulting in inaccurate measurement, which will cause the glass plate to be released from the furnace too early or too late. As a result, the scrap rate of the glass plate is greatly increased, resulting in a waste of resources. A method for controlling the time of release of the glass plate in the tempering process is provided.

Method used

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  • Process control method for glass plate tempering process
  • Process control method for glass plate tempering process
  • Process control method for glass plate tempering process

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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, taking the total power of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0039] First, determine the heating furnace to be used, adjust the working temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass plate, white glass) and thickness information, and set the heating furnace at a normal temperature under no load Run to reach the working temperature, monitor the total power value of the heating element in this state, and measure the total power value at five different moments, and average the five values. The average value is the standard threshold W 0 ; Measure the ambient temperature and compare the correction coefficient table (the correction coefficient K in the table is obtained by the following calculation method: separately monitor the total power value of the heating element when the he...

Embodiment 2

[0042] Such as figure 2 As shown, taking the total current of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0043] First, determine the heating furnace to be used, adjust the working temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass plate, white glass) and thickness information, and set the heating furnace at a normal temperature under no load Run to reach the working temperature, monitor the total current of the heating element in this state, and measure the total current at five different moments, and average the five values. The average value is the standard threshold A 0 . Measure the ambient temperature and compare the correction coefficient table (the correction coefficient K in the table is obtained by the following calculation method: monitor the total current value of the heating element when the heating furnace...

Embodiment 3

[0046] Such as image 3 As shown, taking the turn-on ratio of the electric heating element as an example, the control process of the heating control method of the present invention is as follows:

[0047] First determine the heating furnace to be used, adjust the operating temperature of the heating furnace according to the type of glass plate to be heated (such as low-emissivity coated glass plate, white glass) and thickness information, and operate the heating furnace under no load when the ambient temperature is normal When the operating temperature is reached, monitor the turn-on ratio of the heating element in this state, and measure the turn-on ratio at five different moments, and average the five values. The average value is the standard threshold K 0 , Measure the ambient temperature, and compare the correction coefficient table (the correction coefficient K in the table is obtained by the following calculation method: separately monitor the heating element's turn-on ratio ...

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Abstract

A glass plate tempering process control method, after the glass plate is sent into the heating furnace, the monitoring unit monitors the working parameters of the heating element in real time, and filters the working parameters of the heating element, and then transmits the filtered working parameters of the heating element to the Control unit, the control unit compares the received working parameters of the heating element with the set threshold value, and when the working parameter of the heating element passes through the maximum value and reaches the set threshold value in the process of changing again, the control unit sends a signal to the drive mechanism Command, the driving mechanism acts to send the glass plate out of the heating furnace directly or after a delay, so as to complete the heating process of the glass plate. The invention changes the traditional control method based on time, not only reduces the energy consumption in the tempered glass production process, but also improves the finished product quality of the tempered glass.

Description

Technical field [0001] The invention relates to a glass plate production process, in particular to a glass plate tempering process control method. Background technique [0002] In the tempering process of the glass plate, the glass plate is first heated to a softening temperature (for example, 600°C to 700°C), and then the tempering treatment is completed by rapid cooling. Among them, the heating of the glass plate is an important process control process. In the prior art, the heating process of the glass plate is usually controlled by the heating time, that is, the thickness of the glass plate is estimated by multiplying the time coefficient by the thickness of the glass plate. Heating time, when the set heating time is reached, the glass plate is out of the oven. This method of relying on experience to control the heating process of the glass plate has the following technical defects: 1. The heating temperature of the glass plate is not easy to accurately control, and the heat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/30C03B27/012
CPCG05D23/30C03B27/012C03B27/0417C03B29/08Y02P40/57G05D7/00
Inventor 赵雁窦高峰江春伟
Owner 洛阳兰迪智能科技有限公司
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