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    Advantages of Walking Beam Reheating Furnaces

    Author : hani        Time : 2019/06/14
    Compared with the push-steel reheating furnace, the walking beam reheating furnaces have the following advantage:
    (1) The billets heated is not limited by the shape and size of cross-section, so push-steel reheating furnace can be heated.
    Large slabs, special-shaped slabs and small and thinner billets which are difficult to be heated in reheating furnace.
    2) The heating system is flexible and adaptable. When the length of the furnace is fixed, the number of charges in the furnace can be changed by changing the distance between the steels, so as to meet the needs of rolling mill output and steel grade change. By adjusting the step-by-step cycle, the heating time of steel in the furnace can be changed, so as to meet the needs of different steel grades and different heating speeds.
    3) The heating quality is better and the steel temperature is more uniform. Because there is a certain distance between the steel in the walking beam reheating furnaces, the heating area of the steel is increased, and the temperature difference of the steel section is reduced. In addition, because the movement of the steel material depends on the bottom of the furnace, and does not slide directly on the bottom of the furnace, there will be no scratches on the lower surface of the billet.
    4) The length of the furnace is not limited by the pushing ratio. It will not only avoid accidents such as arch steel and sticking steel, but also increase the length of the furnace and increase the production capacity of the furnace. The hearth strength of large walking beam reheating furnaces can reach 800-1000kg/(m2 h).
    5) It is flexible and convenient to cooperate with the rolling mill. The steel can be withdrawn from the furnace according to the need to avoid the oxidation and decarbonization caused by the long-term stopping of the steel in the furnace. It can also make the steel material stagnate in the furnace to meet the needs of rolling mill output changes.
    6) It can accurately calculate and control the heating speed and time of steel in the furnace, which is conducive to the automation of the whole heating process.
    7) The high degree of automation: Furnace temperature control adopts double cross-limiting control with the dynamic limiting band to realize second and third level automatic control.
    8) Equipped with the perfect thermal automation control system to ensure strict air-to-air ratio and reasonable furnace pressure control is to minimize heat loss and fuel consumption.
    walking beam reheating furnaces

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