| 摘要 |
PURPOSE:To prevent generation of uneven billet thickness, lamination and rippled surface with a casting mold formed of stationary walls and moving mold surfaces by coating lubricants having high and low viscosities to the prescribed parts on the moving mold surfaces. CONSTITUTION:Stationary walls 2a, 2b are disposed to face each other on moving mold surfaces 1a, 1b and the space corresponding to the width of a thin billet 3 is provided therebetween. Said surfaces 1a, 1b are formed of a pair of casting rolls or casting belts and are disposed to face each other apart at the space corresponding to the thickness of the billet 3. A lubricant having a high viscosity is coated to the parts of the surfaces 1a, 1b facing the walls 2a, 2b and a lubricant having a low viscosity on the parts facing the molten metal between the walls 2a and 2b. The molten metal is supplied into the continuous casting mold formed of said surfaces 1a, 1b and the walls 2a, 2b to obtain billet 3. The cooling rate in the width direction of the billet 3 is thus made uniform and the generation of uneven billet thickness, lamination and rippled surface is prevented. |
