無方向性けい素鋼板の磁気特性に及ぼす冷却条件の影響  [in Japanese] Effect of the Cooling Condition on the Magnetic Properties of Non-oriented Silicon Steel Sheets  [in Japanese]

Non-oriented 3% silicon steel sheets were cold-rolled to a thickness of 0.1 mm, and annealed in an argon atmoshere. Their magnetic properties varied according to the cooling conditions. Two directions of easy magnetization in samples were observed when they were annealed at a low cooling rate. A sample with two strong easy directions was also obtained through two step cooling in the first step, the annealing temperature was 900℃, and the holding time was 1.5 hours, and in the second step, the annealing temperature was 500℃, and the holding time was 5 hours. The magnetic induction at 800 A/m was 1.64 T in the rolling direction and 1.62 T perpendicular to the rolling direction, respectively.