化学成分对低牌号冷轧无取向电工钢铁损的影响

Effect of Chemical Composition on Core Loss of Low Grade Cold Rolled Non-Oriented Electrical Steel

通过50 kg真空感应炉熔炼-锻造成100 mm×25 mm板坯-350四辊轧机热轧2 mm带材-350四辊冷轧机轧成0.5 mm带材流程,研究了主要元素(%)-0.015～0.070C、1.21～2.30Si、0.25～0.33Mn、0.013～0.018P、0.008～0.017S、0.002～0.210Al对低牌号冷轧无取向电工钢铁损的影响。结果表明,随钢中碳、磷、硫、锰含量的增加,冷轧无取向电工钢铁损明显增加;随硅含量增加,钢的铁损降低;铝与钢中的氮形成细小的AlN颗粒,阻碍钢材晶粒长大,随钢中铝含量增加,铁损增加。

The effect of main element - 0.015 -0.070C, 1.21- 2.30Si, 0.25 - 0.33Mn, 0.013 - 0.018P, 0. 008 -0. 017S, 0. 002 -0. 210A1 in low grade cold rolled non-oriented eleetrical steel on core loss has been studied by the process of 50 kg vacuum induction furnace steelmaking - 100 mm ×25mm slab forging - 2 mm strip hot rolled by 350 four high mill - 0. 5 mm strip cold rolled by 350 four high mill. Results showed that with increasing carbon, phosphorus, sulphide, manganese content in steel the core loss of cold rolled non-oriented electrical steel obviously increased; with increasing silicon eontem in steel the core loss decreased and as aluminum with nitrogen formed fine AlN particles to prevent grain growing up in steel, the core loss increased with increasing aluminum content in steel.