边部加热对于均化热轧带钢横向温度分布、提高产品性能及尺寸精度具有重要影响。
Edge heating process can uniform the temperature of hot rolled stip and then benefit the property and dimension precision of the strip.
板卷产生边部裂纹的主要原因是：连铸坯表面边部横裂纹（包括深的振痕）和边部的细小纵裂纹，在加热和轧制过程中不断扩展；
The main reasons of the edge cracking are: expanding of horizontal cracks (including deep oscillation imprint) and fine vertical cracks of cast blank during reheating and hot rolling;
研究表明，窄缝内横截面中心线上的速度呈梯形分布，窄边附近流速较低，中间高；宽边完全加热时，流体不足以带出加热板发出的热量，使得角部出现热集中现象；
The results reveal that the velocity of the center of cross section is trapeziform, the velocity of about narrow side of the channel is lower, but the velocity of center is high;
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