发明申请
- 专利标题： LOW COST MAKING OF A LOW CARBON, LOW SULFUR, AND LOW NITROGEN STEEL USING CONVENTIONAL STEELMAKING EQUIPMENT
- 专利标题（中）： 使用传统钢铁设备的低碳，低硫和低氮钢的低成本
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申请号： US12818619申请日： 2010-06-18
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公开(公告)号： US20100276102A1公开(公告)日： 2010-11-04
- 发明人: Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
- 申请人： Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
- 申请人地址： US NC Charlotte
- 专利权人： NUCOR CORPORATION
- 当前专利权人： NUCOR CORPORATION
- 当前专利权人地址： US NC Charlotte
- 主分类号： B22D46/00
- IPC分类号： B22D46/00 ; B22D27/00
摘要：
A method of making a steel with low carbon less than 0.035% by weight including steps of preparing a heat of molten steel composition in a steelmaking furnace to a tapping temperature as desired for desulfurization at a VTD, tapping open into a ladle the molten steel composition with an oxygen level between about 600 and 1120 ppm, providing slag forming compound to the ladle to form a slag cover over the molten steel composition in the ladle, transporting the molten steel to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, transporting the molten steel to an LMF and deoxidizing the molten steel composition, after deoxidizing, returning to the VTD to desulfurize and degas the molten steel composition, and casting the molten steel composition to form a steel with low carbon less than 0.035% by weight.
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