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公开(公告)号：US20110030911A1
公开(公告)日：2011-02-10
申请号：US12989201
申请日：2009-07-15
IPC分类号： B22D27/00
CPC分类号： B22D1/00 , B22D11/00 , B22D11/108 , B22D11/11 , C21C7/0006 , C21C7/06 , C22C38/005 , C22C38/14
摘要： A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).
摘要翻译： 一种低碳钢板坯的制造方法，其特征在于，在脱碳碳钢中添加Ti至碳质浓度为0.05质量％以下，然后添加La和Ce中的至少一种来调节构成，并且生产熔融钢水 ; 并通过中间包将熔炼的钢水倒入铸模中; 其特征在于，在所述中间包中含有的熔融钢水中，在所述中间包中含有的氧化合金量的0.2〜1.2倍量中的至少一种添加到所述中间包中的所述熔融钢水中，从而得到钢坯 具有包含Ti的氧化物和La和Ce中的至少一种作为主要成分的夹杂物，并且为了使每种夹杂物的组成以（La 2 O 3 + Ce 2 O 3）÷TiO n计的质量比为0.1〜0.7 （n = 1〜2）。
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公开(公告)号：US09149867B2
公开(公告)日：2015-10-06
申请号：US13568200
申请日：2012-08-07
CPC分类号： B22D1/00 , B22D11/00 , B22D11/108 , B22D11/11 , C21C7/0006 , C21C7/06 , C22C38/005 , C22C38/14
摘要： A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).
摘要翻译： 一种低碳钢板坯的制造方法，其特征在于，在脱碳碳钢中添加Ti至碳质浓度为0.05质量％以下，然后添加La和Ce中的至少一种来调节构成，并且生产熔融钢水 ; 并通过中间包将熔炼的钢水倒入铸模中; 其特征在于，在所述中间包中含有的熔融钢水中，在所述中间包中含有的氧化合金量的0.2〜1.2倍量中的至少一种添加到所述中间包中的所述熔融钢水中，从而得到钢坯 具有包含Ti的氧化物和La和Ce中的至少一种作为主要成分的夹杂物，并且为了使每种夹杂物的组成以（La 2 O 3 + Ce 2 O 3）÷TiO n计的质量比为0.1〜0.7 （n = 1〜2）。
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公开(公告)号：US20120298320A1
公开(公告)日：2012-11-29
申请号：US13568200
申请日：2012-08-07
CPC分类号： B22D1/00 , B22D11/00 , B22D11/108 , B22D11/11 , C21C7/0006 , C21C7/06 , C22C38/005 , C22C38/14
摘要： A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).
摘要翻译： 一种低碳钢板坯的制造方法，其特征在于，在脱碳碳钢中添加Ti至碳质浓度为0.05质量％以下，然后添加La和Ce中的至少一种来调节构成，并且生产熔融钢水 ; 并通过中间包将熔炼的钢水倒入铸模中; 其特征在于，在所述中间包中含有的熔融钢水中，在所述中间包中含有的氧化合金量的0.2〜1.2倍量中的至少一种添加到所述中间包中的所述熔融钢水中，从而得到钢坯 具有包含Ti的氧化物和La和Ce中的至少一种作为主要成分的夹杂物，并且为了使每种夹杂物的组成以（La 2 O 3 + Ce 2 O 3）÷TiO n计的质量比为0.1〜0.7 （n = 1〜2）。
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