文中简要介绍了冷轧钢卷罩式退火炉内罩材质的选择和结构型式,通过多年的生产实践,笔者认为,冷轧钢卷罩式退火炉的内罩要用耐热钢板焊制而成,结构型式采用单层机械密封裙式、横向波形和网状波形为宜. In this paper, the selection and structure of the inner material of the cold rolled coil hood annealing furnace are briefly introduced. Through years of production practice, the author believes that the inner cover of the cold rolled coil annealing furnace should be made of heat-resistant steel plate , The structure type uses the single mechanical seal skirt type, the transverse wave form and the net shape waveform is suitable.