| 摘要 |
<p>A method for controlling the aluminium content of continuously cast slab for manufacturing grain- oriented electrical steel sheet and strip, comprises transferring molten steel prepared for continuous casting and containing, by weight, not more than 4.0% silicon and 0.01 to 0.08% aluminium and 0.01% to 0.06% sulphur to a ladle or other vessel, adjusting a slag principally comprising silicon dioxide, calcium oxide and aluminium oxide on the surface of the molten steel to maintain the weight ratio of aluminium oxide to silicon dioxide of the slag at not less than 0.25, and continuously casting the molten steel.</p> |
