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板卷罩式退火炉的能力可通过增加循环量,如采用氢气作为保护气体将产量提高至100％。目前宽带钢退火时的产量,加热时可大于3t/h,冷却时可大于4t/h。通过提高循环量所引起的保护气体的较高流速,既可改善保护罩与保护气体之间的热交换,也可改善保护气体和板卷之间的热交换,因此装入材料的加热和冷却速度都加快了。在加热过程中,由于加热气体的热量进入板卷的速度加快,因此,为了达到调节温度的燃料最大输入量也相应地随之提高,但不至于使保护罩及板卷的外层过热。这样就使退火件的加热,特别是在加热的开始阶
The ability of a flat-bell annealer can be increased to 100% by increasing the amount of circulation, such as using hydrogen as a shielding gas. The current output of wide strip annealing, heating can be greater than 3t / h, cooling can be greater than 4t / h. By increasing the circulation rate, the higher flow rate of the shielding gas improves both the heat exchange between the protective cover and the shielding gas as well as the heat exchange between the shielding gas and the coil, so that the material to be heated and cooled Speed has accelerated. During heating, the maximum amount of fuel input for temperature regulation is correspondingly increased as the heat of the heating gas is accelerated into the coil without overheating the outer cover of the shield and the coil. This will heat the annealed parts, especially at the beginning of heating