Method for producing non-oriented electrical steel in endless rolling mode through sheet billets
A technology of oriented electrical steel and endless rolling, which is applied in the field of iron and steel, can solve problems such as head and tail temperature, plate shape and thickness fluctuations, many head and tail cuts, and long time, so as to achieve good product surface quality and improve finished product quality. The effect of high rate and fast heating speed
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[0032] The smelting of non-oriented electrical steel is carried out according to hot metal pretreatment, converter steelmaking, and vacuum treatment. The smelting composition is shown in Table 1. The production process of continuous casting and hot rolling is shown in Table 2. The hot-rolled sheet is pickled, cold-rolled into a 0.50mm cold-rolled sheet, and subjected to dry gas annealing at 850°C for 60s. The three parts of the coil head, middle, and tail are sampled. Magnetic and same board difference are measured, performance is shown in Table 3.
[0033] Table 1 Steelmaking composition%
[0034] Serial number
[0035] Table 2 Production Process
[0036]
[0037]
[0038] Table 3 Comparison of magnetism and convexity of different parts
[0039]
[0040] It can be seen that, compared with the traditional process and thin slab continuous casting and rolling process, the head and tail magnetic properties and shape of electrical steel produced under the endless rolling process are m...
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