| 摘要 |
Provided is a method for stably obtaining a non-oriented electrical steel sheet with high magnetic flux density and excellent productivity, at a low cost by casting in a continuous casting machine a slab having a chemical composition including by mass%, C: 0.0050% or less, Si: more than 3.0% and 5.0% or less, Mn: 0.10% or less, Al: 0.0010% or less, P: more than 0.040% and 0.2% or less, N: 0.0040% or less, S: 0.0003% or more and 0.0050% or less, Ca: 0.0015% or more, and total of at least one element selected from Sn and Sb: 0.01% or more and 0.1% or less, balance including Fe and incidental impurities, subjecting the slab to heating, then subjecting the slab to hot rolling to obtain a hot rolled steel sheet, then subjecting the steel sheet to hot band annealing, pickling, subsequent single cold rolling to obtain a final sheet thickness, then subjecting the steel sheet to final annealing, wherein in the hot band annealing, soaking temperature is 900°C or higher and 1050°C or lower, and cooling rate after soaking is 5°C/s or more. |
