A kind of cold-rolled strip steel for battery case and preparation method thereof
A technology of cold-rolled steel strip and battery case, which is applied in the field of cold-rolled steel strip for battery case and its preparation, which can solve the problems of incomplete annealed structure, precise control of microstructure, unfavorable high-performance uniformity of roll-through, etc.
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Embodiment 1
[0086] In this example, the smelting process adopts the "KR-LD-RH-CC" production process, the crystallizer is treated with rare earth wire feeding, the rare earth brand is REce-48, the rare earth addition is controlled at 180g / t, and the continuous casting casting speed is controlled at 1.2m / min, the chemical composition of the slab is shown in Example 1 of Attached Table 1.
[0087] Continuous casting slab four-sided machine cleaning and stripping treatment, after hot rolling, heating, rough rolling, finish rolling, layer cooling and coiling, cold-rolled plates are produced by pickling + cold continuous rolling unit, hot-rolled crown 40μm, acid rolling 1# The -3# frame adopts the roll shifting of the middle roll, and the roll shifting amount UC-δ of the middle roll is set to 25mm, and the specific process parameters are shown in Example 1 of Attached Table 2.
[0088] The cold-rolled steel strip is recrystallized and annealed in an all-hydrogen bell-type annealing furnace. A...
Embodiment 2
[0092] In this example, the smelting process adopts the "KR-LD-RH-CC" production process, the rare earth wire feeding treatment in the crystallizer, the rare earth brand RECe-48, the controlled rare earth amount is 120g / t, and the continuous casting casting speed is controlled to be 1.4m / min, the chemical composition of the slab is shown in Example 2 of Attached Table 1.
[0093] Continuous casting slab four-sided machine cleaning and stripping treatment, after hot rolling, heating, rough rolling, finish rolling, layer cooling and coiling, cold-rolled plates are produced by pickling + cold continuous rolling unit, hot-rolled crown 30μm, acid-rolled 1# The -3# frame adopts the roll shifting of the middle roll, and the roll shifting amount UC-δ of the middle roll is set to 25mm, and the specific process is shown in Example 2 of Attached Table 2.
[0094] The cold-rolled steel strip is recrystallized and annealed in an all-hydrogen bell-type annealing furnace. After the annealin...
Embodiment 3
[0098] In this example, the smelting process adopts the "KR-LD-RH-CC" production process, the crystallizer is treated with rare earth wire feeding, the rare earth brand is RECe-48, the rare earth addition is controlled at 100g / t, and the continuous casting casting speed is controlled at 1.3m / min, the chemical composition of the slab is shown in Example 3 of Attached Table 1.
[0099] Continuous casting slab four-sided machine cleaning treatment, after hot rolling, heating, rough rolling, finish rolling, layer cooling and coiling, cold-rolled plates are produced by pickling + cold continuous rolling unit, hot-rolled convexity 58μm, acid rolling 1# The -3# frame adopts the roll shifting of the middle roll, and the roll shifting amount UC-δ of the middle roll is set to 25mm, and the specific process is shown in Example 3 of the attached table 2.
[0100]The cold-rolled steel strip is recrystallized and annealed in an all-hydrogen bell-type annealing furnace. After the annealing ...
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Abstract
Description
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Application Information
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