High-speed plate passing method and device and strip steel production line

The invention relates to a high-speed plate passing method and device and a strip steel production line, and belongs to the technical field of metal calendaring. A low-pressure chamber of which the internal air pressure is smaller than the external environment air pressure is arranged between a high-speed flying shear and a coiling machine of the strip steel continuous casting and rolling production line, so that the airflow resistance in the strip steel advancing process is reduced; therefore, the stability of the strip steel in the advancing process and the success rate of strip threading are improved, product waste and loss caused by production accidents are reduced, the metal yield is improved, and the production efficiency and economic benefits of a production line are comprehensively improved. 本发明涉及一种高速通板方法、装置及带钢生产线，属于金属压延技术领域，在带钢连铸连轧生产线的高速飞剪与卷取机之间设置内部气压小于外部环境气压的低压腔室，以减少带钢行进过程中的气流阻力，从而提高带钢行进过程的稳定性和穿带的成功率，减少因生产事故造成的产品作废损失，从而提高了金属收得率，综合提高了生产线的生产效率和经济效益。