| 摘要 |
PURPOSE:To enhance the product yield and the work efficiency by spraying a molten metal on both sides of a grain-oriented silicon steel slab in the lateral direction so as to prevent edge crack during rolling, heating the slab and hot rolling it. CONSTITUTION:When a slab S contg. 2.5-5.0wt% Si is heated to 1,300-1,420 deg.C and hot rolled, a molten metal in which Si is readily diffusible is previously sprayed on both sides of the slab S in the lateral direction over the full length with sprayers G1, G2. The slab S is then heated to 1,300-1,420 deg.C and hot rolled. A molten mild steel having a lower Si content than the slab S is preferably used as the molten metal. |
