PURPOSE: To manufacture a unidirectional silicon steel plate with a small iron loss and high magnetic flux density by hot rolling a low-carbon silicon steel ingot contg. Mn, S, acid-sol, Al, N, Cr and Cu and by carrying out precipitation annealing, cold rolling, decarburization annealing and finish annealing at a high temp.
CONSTITUTION: 0.03W0.30% Cr and 0.02W0.30% Cu are added to a silicon steel ingot contg. 0.025W0.100% C, 2.5W4.0% Si, 0.03W0.15% Mn, 0.010W0.040% S, 0.010W0.050% acid sol. Al and 0.0030W0.0100% Ni as essential components or further contg. 0.02W0.30% Sn. The ingot is hot rolled and subjected to precipitation annealing. The resulting steel plate is regulated to the final thickness by cold rolling at ≥80% final draft and decarburization annealing. The plate is then coated with an MgO-base protective coating material for annealing, and finish annealing is carried out at a high temp.
SUGA YOUZOU
NAKAJIMA SHIYOUZABUROU
| JPS5224116A | 1977-02-23 | |||
| JPS5021928A | 1975-03-08 | |||
| JPS5015727A | 1975-02-19 | |||
| JPS5745818A | 1982-03-16 | |||
| JPS53134722A | 1978-11-24 |