公开(公告)号：US20110167960A1

公开(公告)日：2011-07-14

申请号：US12311330

申请日：2007-12-21

Applicant: Shiro Ban-Ya ,  Yoko Ban-Ya ,  Mitsutaka Hind ,  Hiroyasu Ito ,  Syuhei Takeda

Inventor： Shiro Ban-Ya ,  Yoko Ban-Ya ,  Mitsutaka Hind ,  Hiroyasu Ito ,  Syuhei Takeda

IPC: C21B3/02 ,  C22B9/10

CPC classification number: B22D1/00 ,  C21C7/0645 ,  C21C7/076 ,  C21C7/10 ,  C21C2007/0062 ,  Y02P10/242

Abstract: Disclosed is a steelmaking flux which makes it possible to produce steel of extremely low contents of oxygen, nitrogen and sulfur. The flux consists of, by weight, CaO: 30-57%, Al2O3: 35-64% and MgO: 5-17%, and having a composition in the area defined by the points A to E of Table 1 below in the MgO—CaO—Al2O3 diagram of FIG. 1, in which the activity of alumina is 10−2 or less. TABLE 1 Concentration (Molar basis, mole) PointNCaONAl2O3NMgO A0.410.480.11 B0.370.350.11 C0.620.220.16 D0.870.250.08 E0.460.450.09

Abstract translation: 公开了一种炼钢焊剂，其可以生产极低含量的氧，氮和硫的钢。 助熔剂以重量计包含CaO：30-57％，Al2O3：35-64％和MgO：5-17％，其组成在下表1至 -CaO-Al 2 O 3图。 1，其中氧化铝的活性为10-2以下。 表1浓度（摩尔数，摩尔）点NCaO NAl 2 O 3 NMgO A 0.41 0.48 0.11 B 0.37 0.35 0.11 C 0.62 0.22 0.16 D 0.87 0.25 0.08 E 0.46 0.45 0.09