专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2008087046A Continuous casting method for medium-carbon steel 有权
标题翻译：中碳钢连续铸造方法
公开(公告)号：JP2008087046A
公开(公告)日：2008-04-17
申请号：JP2006271410
申请日：2006-10-03
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： BABA NOBUAKI , HANAO MASAFUMI
IPC分类号： B22D11/00 , B22D11/04 , B22D11/10 , B22D11/108 , B22D11/18 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method by which a medium-carbon steel can stably be cast by perfectly preventing a cracking break-out caused by nonuniform solidification at hort side parts in a cast slab.
SOLUTION: The continuous casting method for the medium-carbon steel is characterized in that, when the medium-carbon steel containing 0.08-0.16% C is cast with a continuous caster having a mold thickness of>240 mm and a mold length of ≤1.1 m, mold flux having 1.2-2.5 basicity and 1,200-1,280°C solidification temperature is used, a static-magnetic field having ≥0.15T magnetic field strength is applied to molten steel in a mold using a magnetic field applying apparatus set at a position lower than a discharge hole of an immersion nozzle, casting speed is set to be 1.3-2.0 m/min and an uniform solidification index (A) expressed as A=1-2b/(a+c) is set to be
摘要翻译：要解决的问题：提供一种连续铸造方法，其中通过完全防止在铸坯中的高温侧部不均匀凝固引起的裂纹破裂，可以稳定地铸造中碳钢。解决方案：中碳钢的连续铸造方法的特征在于，当具有模具厚度> 240mm的连铸机铸造含有0.08-0.16％C的中碳钢时，模具长度 ≤1.1m，使用1.2-2.5碱度的模具焊剂和1,200-1,280℃的固化温度，使用磁场施加装置组件对模具中的钢水施加≥0.15T的磁场强度的静磁场在低于浸渍喷嘴的排出孔的位置处，将铸造速度设定为1.3〜2.0m / min，以A = 1-2b /（a + c）表示的均匀凝固指数（A）设定为 <0.7，因此进行铸造，其中b表示铸坯的短边表面之间的间隔的最小值和白线，在短边的1/2厚度位置处的垂直截面中铸板; a和c表示从显示上述最小值的位置起在铸造方向上的10mm前后部位置的间隔。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2004358485A Mold flux for continuous casting of steel 审中-公开
公开(公告)号：JP2004358485A
公开(公告)日：2004-12-24
申请号：JP2003156648
申请日：2003-06-02
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HANAO MASAFUMI , TSUKAGUCHI YUICHI
IPC分类号： B22D11/108 , C01B33/24 , C21C7/076
CPC分类号： Y02P10/242
摘要： PROBLEM TO BE SOLVED: To provide a mold flux for the continuous casting which prevents the occurrence of defects caused by inclusions occurring on the surface layer of a cast slab, and at the same time, the occurrence of longitudinal cracks occurring on the surface of the cast slab. SOLUTION: The method for the continuous casting of steel has the value of a ratio CaO/SiO 2 of the content mass % of CaO and that of SiO 2 is 1.0-2.5 and the content of S is 2 O 3 to 5-20 mass %. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003225744A POWDER FOR CONTINUOUS CASTING AND CONTINUOUS CASTING METHOD USING THIS POWDER 审中-公开
公开(公告)号：JP2003225744A
公开(公告)日：2003-08-12
申请号：JP2002028211
申请日：2002-02-05
申请人： SUMITOMO METAL IND
发明人： TSUKAGUCHI YUICHI , HANAO MASAFUMI , KAWAMOTO MASAYUKI , HAYASHI HIROSHI
IPC分类号： B22D11/108 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To satisfy such a characteristic as a stable crystal precipitation into powder film required in the powder for casting and further, if necessary, to simultaneously satisfy the enhancement of a viscosity and a basicity of molten slag. SOLUTION: This powder for casting is the one, in which akermanite, gehlenite or melilite of a complete solid solution of both, is precipitated as a main crystal composition when the molten slag is solidified. In this way, both of the viscosity and the basicity of the molten slag produced by melting in a mold are high and the crystal precipitated in the powder film is stabilized to obtain a desired crystal. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2002346708A MOLD POWDER FOR CONTINUOUS CASTING 失效
公开(公告)号：JP2002346708A
公开(公告)日：2002-12-04
申请号：JP2001158373
申请日：2001-05-28
申请人： SUMITOMO METAL IND
发明人： HANAO MASAFUMI , KAWAMOTO MASAYUKI
IPC分类号： B22D11/108 , B22D11/00 , B22D11/07 , B22D11/111 , B22D11/16 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide mold powder which enables the prevention of brake out and deterioration in the surface quality of a slab in the casting of molten steel containing Al >= about 1.0 mass%. SOLUTION: The powder contains CaO, SiO2 , Li2 O and a fluorine compound as fundamental components, and contains one or more kinds selected from Na2 O and K2 O, and Al2 O3 , and in which the content of Fe constituting the fluorine compound is 4 to 25%, and the total content of Na2 O and K2 O is

5. 发明专利

JP2002301551A MOLD POWDER AND CONTINUOUSLY CASTING METHOD 失效
公开(公告)号：JP2002301551A
公开(公告)日：2002-10-15
申请号：JP2001103406
申请日：2001-04-02
申请人： SUMITOMO METAL IND
发明人： KAWAMOTO MASAYUKI , HANAO MASAFUMI
IPC分类号： B22D11/108 , B22D11/111
摘要： PROBLEM TO BE SOLVED: To provide a mold powder capable of stably preventing the occurrence of longitudinal crack and/or slag inclusion on a slab surface, and a continuously casting method using this mold powder. SOLUTION: This powder consists of CaO, SiO2 and F as basic components and is atm in the oxygen partial pressure of the molten slag formed by melting. The contents in the molten slag are, by mass %, 40 to 60% CaO, 20 to 40% SiO2 and 2 to 15% F and the total content of Al2 O3 , MgO, Na2 O and Li2 O is 1 to 20%. The balance consists of impurities. In addition, the component composition in the molten slag preferably satisfies the following equation (a): (CaO+F+MgO+Na2 O+Li2 O)/(Al2 O3 +SiO2 )>=1.5...(a).

6. 发明专利

JP2001259805A METHOD FOR EVALUATING SINTERING PROPERTY OF MOLD POWDER AND MOLD POWDER 失效
公开(公告)号：JP2001259805A
公开(公告)日：2001-09-25
申请号：JP2000073680
申请日：2000-03-16
申请人： SUMITOMO METAL IND
发明人： HANAO MASAFUMI , KAWAMOTO MASAYUKI , DOI KYOJI
IPC分类号： G01N1/28 , B22D11/108 , G01N3/00
摘要： PROBLEM TO BE SOLVED: To provide a testing evaluating method with which it can be predicted whether slag bear is easily formed or not, and to provide a mold powder in which the slag bear is difficult to form. SOLUTION: An evaluating method of a sintering property, is conducted by that after charging the mold powder to the upper end of a mold frame by dropping the mold powder from the upper part of the mold frame, and the mold powder is cooled after sintering by heating up to >=500 deg.C, and thereafter, the compression strength of the sintered body of the mold powder as the state of taking out from the mold frame is measure. The sintering body of mold powder has

7. 发明专利

JP2001096349A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2001096349A
公开(公告)日：2001-04-10
申请号：JP27528199
申请日：1999-09-28
申请人： SUMITOMO METAL IND
发明人： KAWAMOTO MASAYUKI , HANAO MASAFUMI , TSUKAGUCHI YUICHI , HAYASHI HIROSHI
IPC分类号： B22D11/16 , B22D11/07 , B22D11/108 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method of high-carbon/high-manganese steel blooms and billets which are free from the occurrence of breakout, and also there is no blow hole defect in the strand surface. SOLUTION: Using mold powder of which viscosity in 1300 deg.C is 2-10 poise and CaO/SiO2of 1.3-1.6 in weight the blooms or billets of which C content is 0.2-0.8 wt.% and Mn content is 1.0-2.0 weight % are continuously cast on condition that the vibration stroke of a mold is 3-5 mm.

8. 发明专利

JP2000218348A CONTINUOUS CASTING MOLD POWDER AND CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2000218348A
公开(公告)日：2000-08-08
申请号：JP1888399
申请日：1999-01-27
申请人： SUMITOMO METAL IND
发明人： HANAO MASAFUMI , KAWAMOTO MASAYUKI , TSUKAGUCHI YUICHI , HAYASHI HIROSHI
IPC分类号： B22D11/07 , B22D11/10 , B22D11/108 , C21C7/076
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting powder and a continuous casting method, with which a casting piece of good quality can be obtained, having no failure such as a vertical cracking and an entrainment of powder or bubble on a cast piece surface. SOLUTION: Continuous casting is carried out by using a powder composed of; CaO, SiO2, Al2, O2 and fluorine compound as a main component, and ratio of (CaO)h containing rate and SiO2 containing rate (CaO)h/SiO2 is 0.9-1.9, containing 5-60% CaF2, and 3-40% Al2O3, viscosity at 1,300 deg.C is 1.5 poise or more. In this case, (CaO)h=T.CaO-F×(56/38) is to be satisfied.

9. 发明专利

JPH08120318A METHOD FOR REUSING SLAG FROM REFINING FURNACE 失效
公开(公告)号：JPH08120318A
公开(公告)日：1996-05-14
申请号：JP25862594
申请日：1994-10-25
申请人： SUMITOMO METAL IND
发明人： HANAO MASAFUMI
IPC分类号： C22B7/04 , C21C5/36
摘要： PURPOSE: To provide a reusing method of slag from a refining furnace. CONSTITUTION: The slag increased in Mn concn. in the slag by adding a material containing Mn oxide into molten slag produced in the refining furnace is reused as the Mn source in the refining process. Such Mn oxide-containing material is desirable to be in powder state having

10. 发明专利

JP2007050441A Continuous casting method for high alloy steel 有权
标题翻译：高合金钢连续铸造方法
公开(公告)号：JP2007050441A
公开(公告)日：2007-03-01
申请号：JP2005238504
申请日：2005-08-19
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KAWACHI ATSUSHI , HANAO MASAFUMI , KAWAMOTO MASAYUKI , YOSHIHARA MITSUO
IPC分类号： B22D11/16 , B22D11/00 , B22D11/108 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method where, even in the case of a high alloy steel in which a solid-liquid coexistent temperature range is wide and surface cracking is easy to be generated, the fracture of solidified shells is prevented, and a slab having satisfactory surface quality can be produced.
SOLUTION: In the continuous casting method for a high alloy steel in which the total content of Ni and Cr is ≥40 mass%, and also, a solid-liquid coexistent temperature range is ≥70°C. By using mold flux satisfying the relation expressed by an inequality: (1) η≤10/(T
L -T
S ); casting is performed at a casting rate of L is the liquidus temperature (°C) of the high alloy steel; and T
S is the solidus temperature (°C) of the high alloy steel.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种连续铸造方法，其中即使在固液共存温度范围宽且容易产生表面裂纹的高合金钢的情况下，凝固壳的断裂并且可以制造具有令人满意的表面质量的板坯。解决方案：在Ni和Cr的总含量≥40质量％的高合金钢的连续铸造法中，固液共存温度范围为≥70℃以上。通过使用满足由不等式表示的关系的模具通量：（1）η≤10/（T -T ）; 铸造速度<0.6m / min; 其中η是在熔融模具焊剂中1,300℃下的粘度（Pa s）; T L 是高合金钢的液相线温度（℃）; 并且T S 是高合金钢的固相线温度（℃）。版权所有（C）2007，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式