Weather-resistant steel coil surface quality control method and hot-rolling process heating furnace
A technology of surface quality and control method, applied in the field of iron and steel smelting, can solve the problems of difficult application of production lines, high requirements for hot rolling equipment, and difficult operation, and achieves the effect of saving costs, improving processing efficiency, and reducing processing procedures
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Embodiment 1
[0041] In this embodiment, a method for controlling the surface quality of weathering steel coils is provided, please refer to figure 2 , figure 2 It is a flow chart of the method for controlling the surface quality of weathering steel coils in the embodiment of the present application, such as figure 2 As shown, the method includes:
[0042] Step S201, the weathering steel continuous casting slab enters the heating furnace of the hot rolling process, and is heated at the first temperature for a first period of time to obtain a hot slab;
[0043] Step S202, when the first time period is less than or equal to 360 minutes, perform a post-treatment process on the hot slab to obtain a hot-rolled weathering steel coil with a surface copper brittle defect detection rate lower than a threshold value;
[0044] Step S203, when the first time period is greater than 360 minutes, use flame cleaning to clean the upper surface of the cooled hot slab to obtain a reworked slab; then send...
Embodiment 2
[0079] In this embodiment, a heating furnace for hot rolling process is provided, such as Figure 4 Shown, described heating furnace comprises:
[0080] The heating furnace body 401 is used to heat the continuous casting slab of weathering steel at a first temperature for a first period of time to obtain a hot slab;
[0081] The timing unit 402 is used to record the first time period; when the first time period is less than or equal to 360 minutes, the post-treatment process is performed on the hot billet to obtain a weathering steel whose surface copper brittle defect detection rate is less than a threshold Hot-rolled steel coil; when the first time period is greater than 360 minutes, the upper surface of the cooled hot slab is cleaned by flame cleaning to obtain a reworked slab, and then the reworked slab is sent into the heating furnace for reheating.
[0082] The working principle of the heating furnace in this embodiment has been described in detail in Embodiment 1, and...
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