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通过对罩式炉内保护气体的流动静压和动压的测量，计算出了炉内保护气体的流场分布，分析了引起罩式炉内保护气体流态不稳定、流场分布不均匀的原因，提出了改善炉内保护气体流动状态和流场分布的具体措施，为改善冷轧钢卷罩式炉退火质量提供参考。
By measuring the static pressure and the dynamic pressure of the protective gas in the hood furnace, the flow field distribution of the protective gas in the furnace was calculated. The flow instability of the shielding gas in the hood furnace and the uneven distribution of the flow field were analyzed The reasons are given to improve the flow of protective gas flow in the furnace and the distribution of the specific measures to improve the quality of cold rolled steel bell furnace annealing reference.