ABSTRACT

In order to investigate the space–time characteristics of sticker breakout, the instantaneous heat transfer of mould copper plate was visualised. The spatial characteristics of hot and cold regions of true and false sticker breakouts, such as the area, temperature velocity, and location, were studied and analysed. The results show that the hot region area of sticker breakout is mainly concentrated in 1973 to 7795 pixels. The temperature velocity greater than 1.02°C s^–1 is the necessary condition for sticker breakout. The temperature velocity of the cold region is in the range of −0.57 to −4.22°C s^–1. The gathering location of hot and cold region of true sticker breakouts is concentrated in the range of 46th–64th and 5th–47th, respectively. These parameters were also used to distinguish true and false sticker breakouts. The results show that 98.7% of true and false sticker breakouts can be identified with these parameters.

摘要

为了研究贴纸突破的时空特性，对模具铜板的瞬时传热进行了可视化。研究和分析了真假贴纸突破热区和冷区的空间特征，如面积、温度速度和位置。结果表明，贴纸突破的热点区域主要集中在1973~7795像素。大于 1.02°C s ^–1的温度速度是贴纸突破的必要条件。寒冷地区的温度速度在−0.57 到−4.22°C s ^–1范围内. 真贴纸突破冷热区的聚集位置分别集中在第46-64和第5-47的范围内。这些参数还用于区分真假贴纸突破。结果表明，使用这些参数可以识别 98.7% 的真假贴纸突破。