| 摘要 |
<p>This invention relates to a method which can produce economically a soft magnetic steel material having high permeability. The production method of the present invention comprises hot working a cast iron billet or steel billet consisting of a pure iron type component as the principal component and 0.5 ∩ 2.0 % of Sol. Al and if necessary, 0.005 ∩ 1.0 % of Ti at a predetermined heating temperature and at a finish working temperature, and annealing finally at 900 ∩ 1,300°C and preferably at 1,000 ∩ 1,300°C, to obtain a soft magnetic steel material having coercive force of up to 0.4 Oe and a flux density of at least 10,000 G at 0.5 Oe.</p> |
