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过程工程学报 ›› 2020, Vol. 20 ›› Issue (8): 947-958.DOI: 10.12034/j.issn.1009-606X.219337

• 过程与工艺 • 上一篇    下一篇

玻璃钢化淬冷降温特征及影响因素

岳高伟1,2*, 万重重1, 王 路1, 李彦兵2   

  1. 1. 河南理工大学土木工程学院,河南 焦作 454000 2. 洛阳兰迪玻璃机器股份有限公司,河南 洛阳 471000
  • 收稿日期:2019-11-01 修回日期:2019-12-20 出版日期:2020-08-24 发布日期:2020-08-24
  • 通讯作者: 岳高伟
  • 基金资助:
    Magnéli相亚氧化钛的可控制备、微结构与性能基础研究

Cooling characteristics and influencing factors of glass quenching process

Gaowei YUE1,2*, Chongchong WAN1, Lu WANG1, Yanbing LI2   

  1. 1. School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China 2. Luoyang Landglass Machinery Incorporated Company, Luoyang, Henan 471000, China
  • Received:2019-11-01 Revised:2019-12-20 Online:2020-08-24 Published:2020-08-24

摘要: 对风栅中玻璃的降温规律进行了实验测试,建立了玻璃降温的风栅模型,数值模拟了风压、风温、喷嘴到玻璃距离、出炉速度和玻璃摆动速度对玻璃降温规律的影响。结果表明,玻璃降温曲线的模拟结果与测试结果基本一致,即玻璃温度均随淬冷时间呈负指数降低。风压越大、风温越低,玻璃降温越快,即风压、风温对玻璃的降温规律影响显著。喷嘴到玻璃距离对玻璃降温有一定影响,出炉速度、玻璃摆动速度对玻璃降温规律的影响不明显。

关键词: 玻璃钢化, 表面温度, 降温规律, 风栅, 数值模拟

Abstract: Cooling law of high temperature glass in air-grid plays an important role in the stress of tempered glass, and there are many factors that affect the cooling law of glass. However, because glass moves fast in air-grid, it is very difficult to test the real-time temperature change of high-temperature glass. Moreover, the test of glass cooling for each influencing factor greatly increases the workload of workers. So the physical model of glass cooling in air-grid was established to numerically simulate the cooling law, and in order to verify the reliability of the model, the cooling law of high temperature glass had been tested in air-grid with infrared thermometers under the set parameters. After the high temperature glass entered into the air-grid, the glass temperature at different times presented a strip, which reflected the nonuniformity of glass cooling, but on the whole, the glass temperature gradually decreased with the quenching time, and the glass temperature decreased with quenching time in a negative index. The numerical simulation results were in good agreement with the test results. Then the physical model was applied to simulate the cooling law of high temperature glass with the effect of wind pressure, wind temperature, distance from nozzle to glass, speed out of the heating furnace, and round-trip speed in air-grid. The results showed that the glass temperature decreased exponentially with the wind cooling time. The greater the wind pressure was and the lower the wind temperature was, the faster the glass cooling was, that was, the wind pressure and the wind temperature had a significant influence on the cooling law of glass. Secondly, the distance of the nozzle to glass had a certain effect on the glass cooling, and the effect of speed out of the heating furnace, and round-trip speed in air-grid was not obvious. This study provided important theoretical basis for setting technological parameters of tempered glass production process.

Key words: glass tempering, surface temperature, cooling law, air-grid, numerical simulation