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    • 8. 发明授权
    • Method of controlling heat input to an alloying furnace for
manufacturing hot galvanized and alloyed band steel
    • 控制合金炉热输入热镀锌合金带钢的方法
    • US5423926A
    • 1995-06-13
    • US942569
    • 1992-09-09
    • Yoichi SashiharaMasahiro MasudaIsao NakamuraKunitoshi WatanabeTetsuya MiyazakiKazuhiro Sekimoto
    • Yoichi SashiharaMasahiro MasudaIsao NakamuraKunitoshi WatanabeTetsuya MiyazakiKazuhiro Sekimoto
    • C23C2/28C21D1/34
    • C23C2/28
    • A plate temperature and an emissivity are determined at the outlet of an insulated heated zone, and compensations are established which reduce deviations between the respective measured values and the respective target values. A heat input is compensated for in accordance with the greater one of the compensations relating to the plate temperature and the emissivity, respectively. For a U-pattern material, .DELTA.Q is previously added to the heat input for the leading and the trailing end portion of the material. The band steel is irradiated by laser radiation at the outlet of the heating zone in order to detect the degree of alloying on the basis of the intensity of reflected radiation. When an unalloyed surface is detected, a target value of the heat input is modified. ITV camera is used to determine the optical reflectivity of the surface of the band steel at the outlet of a cooling zone in order to detect the degree of alloying. After the process has been stabilized, the heat input is gradually decremented, and when any slight insufficiency in the degree of alloying is detected, a fixed compensation is added to the heat input under that condition, subsequently ceasing to update the heat input.
    • 在绝热加热区的出口处确定板温度和发射率,并且建立减少各个测量值与各个目标值之间的偏差的补偿。 根据与板温度和发射率有关的更大的补偿,补偿热输入。 对于U形图案材料,DELTA Q先前被添加到材料的前端部分和后端部分的热输入端。 通过激光辐射在加热区的出口处照射带钢,以便根据反射辐射的强度来检测合金化程度。 当检测到非合金表面时,热输入的目标值被修改。 ITV摄像机用于确定冷却区出口处带钢表面的光学反射率,以便检测合金化程度。 过程稳定后,热输入逐渐减少,当检测到合金化程度轻微不足时,在该条件下,对热输入添加固定补偿,随后停止更新热输入。