公开(公告)号：US20100024596A1

公开(公告)日：2010-02-04

申请号：US12414047

申请日：2009-03-30

申请人： Jacobus Marthinus Andreas Geldenhuis ,  David John Sosinsky ,  Daniel Gene Murray ,  David Wayne McGaughey ,  Eugene B. Pretorius

发明人： Jacobus Marthinus Andreas Geldenhuis ,  David John Sosinsky ,  Daniel Gene Murray ,  David Wayne McGaughey ,  Eugene B. Pretorius

IPC分类号： C21C5/52 ,  C21C7/06 ,  C21C7/068

CPC分类号： C21C7/06 ,  C21C5/54 ,  C21C7/0006 ,  C21C7/0043 ,  C21C7/0075 ,  C21C7/064 ,  C21C7/068 ,  C21C7/072 ,  C21C7/076 ,  C21C7/10 ,  C21C2250/08 ,  Y02P10/216 ,  Y02P10/242

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 composition in the ladle to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, adding one or more deoxidizers to the molten steel composition and deoxidizing the molten steel composition, after deoxidizing, adding one or more flux compounds to desulfurize the molten steel composition, and casting the molten steel composition to form a steel with low carbon less than 0.035% by weight.

摘要翻译： 一种制造低于0.035重量％的低碳钢的方法，包括在炼钢炉中制备钢水组合物的热量到VTD脱硫所需的出钢温度的步骤，将钢水组合物开放入钢包 氧浓度在约600和1120ppm之间，向钢包提供炉渣形成化合物，以在钢包中的钢水组合物上形成炉渣盖，将钢包中的钢水组合物输送到VTD中，使钢水组合物脱碳 VTD通过抽出低于650毫巴的真空，脱碳后，向钢水组合物中加入一种或多种脱氧剂，并对钢水组合物进行脱氧，脱氧后，加入一种或多种助熔剂以使钢水组合物脱硫，以及铸造 该钢水组合物形成低于0.035重量％的低碳钢。

公开(公告)号：US08313553B2

公开(公告)日：2012-11-20

申请号：US12414047

申请日：2009-03-30

申请人： Jacobus Marthinus Andreas Geldenhuis ,  David John Sosinsky ,  Daniel Gene Murray ,  David Wayne McGaughey ,  Eugene B. Pretorius

发明人： Jacobus Marthinus Andreas Geldenhuis ,  David John Sosinsky ,  Daniel Gene Murray ,  David Wayne McGaughey ,  Eugene B. Pretorius

IPC分类号： C21C7/10 ,  C21C7/064 ,  C21C7/068

CPC分类号： C21C7/06 ,  C21C5/54 ,  C21C7/0006 ,  C21C7/0043 ,  C21C7/0075 ,  C21C7/064 ,  C21C7/068 ,  C21C7/072 ,  C21C7/076 ,  C21C7/10 ,  C21C2250/08 ,  Y02P10/216 ,  Y02P10/242

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 composition in the ladle to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, adding one or more deoxidizers to the molten steel composition and deoxidizing the molten steel composition, after deoxidizing, adding one or more flux compounds to desulfurize the molten steel composition, and casting the molten steel composition to form a steel with low carbon less than 0.035% by weight.

摘要翻译： 一种制造低于0.035重量％的低碳钢的方法，包括在炼钢炉中制备钢水组合物的热量到VTD脱硫所需的出钢温度的步骤，将钢水组合物开放入钢包 氧浓度在约600和1120ppm之间，向钢包提供炉渣形成化合物，以在钢包中的钢水组合物上形成炉渣盖，将钢包中的钢水组合物输送到VTD中，使钢水组合物脱碳 VTD通过抽出低于650毫巴的真空，脱碳后，向钢水组合物中加入一种或多种脱氧剂，并对钢水组合物进行脱氧，脱氧后，加入一种或多种助熔剂以使钢水组合物脱硫，以及铸造 该钢水组合物形成低于0.035重量％的低碳钢。