发明申请
US20050092458A1 Method and apparatus for controlling flow of molten steel in mold, and method for producing continuous castings
有权
用于控制模具中钢水流动的方法和装置，以及用于生产连续铸件的方法
- 专利标题： Method and apparatus for controlling flow of molten steel in mold, and method for producing continuous castings
- 专利标题（中）： 用于控制模具中钢水流动的方法和装置，以及用于生产连续铸件的方法
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申请号： US10506034申请日： 2003-02-28
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公开(公告)号： US20050092458A1公开(公告)日： 2005-05-05
- 发明人: Jun Kubota , Seishi Mizuoka , Tsuneo Kondo
- 申请人： Jun Kubota , Seishi Mizuoka , Tsuneo Kondo
- 申请人地址： JP Tokyo
- 专利权人： JFE STEEL CORPORATION
- 当前专利权人： JFE STEEL CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2002-055871 20020301; JP2003-046239 20030224
- 国际申请： PCT/JP03/02301 WO 20030228
- 主分类号： B22D11/04
- IPC分类号： B22D11/04 ; B22D11/11 ; B22D11/115 ; B22D11/16 ; B22D11/00 ; B22D27/02
摘要：
When a molten steel flow velocity (u) on a bath surface is higher than a mold-powder entrainment critical flow velocity of 0.32 m/sec, the molten steel flow velocity (u) is controlled to a predetermined molten steel flow velocity by applying a shifting magnetic field to impart a braking force to a discharge flow from an immersion nozzle. When the molten steel flow velocity (u) is lower than an inclusion-adherence critical flow velocity of 0.20 m/sec and is higher than or equal to a bath-surface skinning critical flow velocity of 0.10 m/sec, the molten steel flow velocity (u) is control to the range of 0.20-0.32 m/sec by applying a shifting magnetic field to rotate the intra-mold molten steel in a horizontal direction. When the molten steel flow velocity (u) is lower than the inclusion-adherence critical flow velocity, the molten steel flow velocity (u) is controlled to the range of 0.20-0.32 m/sec by applying a shifting magnetic field to impart an accelerating force to the discharge flow from the immersion nozzle.