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1. 发明专利

DE69809659D1 未知
公开(公告)号：DE69809659D1
公开(公告)日：2003-01-09
申请号：DE69809659
申请日：1998-08-26
申请人： SUMITOMO METAL IND
发明人： HANAO MASAHITO , KAWAMOTO MASAYUKI , TANIZAWA YOSHINORI , KUMAKURA SEIJI
IPC分类号： B22D11/10 , B22D11/108 , B22D11/111 , C04B35/22 , C21C7/076
摘要： A mold powder for continuous steel casting, containing CaO, SiO2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO2 is 0.9-2.8 and the CaF2 content is about 5-60 wt.%. The powder contains Na2O in an amount of 0-25 wt.% and C in an amount of 0-10 wt.%. wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt.%) and F represents the total F content in the mold powder(wt.%). Also disclosed is a method for continuous steel casting which makes use of the mold powder.

2. 发明专利

DE69809659T2 未知
公开(公告)号：DE69809659T2
公开(公告)日：2003-07-03
申请号：DE69809659
申请日：1998-08-26
申请人： SUMITOMO METAL IND
发明人： HANAO MASAHITO , KAWAMOTO MASAYUKI , TANIZAWA YOSHINORI , KUMAKURA SEIJI
IPC分类号： B22D11/10 , B22D11/108 , B22D11/111 , C04B35/22 , C21C7/076
摘要： A mold powder for continuous steel casting, containing CaO, SiO2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO2 is 0.9-2.8 and the CaF2 content is about 5-60 wt.%. The powder contains Na2O in an amount of 0-25 wt.% and C in an amount of 0-10 wt.%. wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt.%) and F represents the total F content in the mold powder(wt.%). Also disclosed is a method for continuous steel casting which makes use of the mold powder.

3. 发明专利

AU700002B1 Mold powder for continuous casting and method of continuous casting 未知
公开(公告)号：AU700002B1
公开(公告)日：1998-12-17
申请号：AU8186398
申请日：1998-08-25
申请人： SUMITOMO METAL IND
发明人： HANAO MASAHITO , KAWAMOTO MASAYUKI , TANIZAWA YOSHINORI , KUMAKURA SEIJI
IPC分类号： B22D11/10 , B22D11/108 , B22D11/111 , C04B35/22 , C21C7/076 , B22D11/07 , B22D11/124 , B22D11/20 , C04B35/057 , C04B35/553
摘要： A mold powder for continuous steel casting, containing CaO, SiO2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO2 is 0.9-2.8 and the CaF2 content is about 5-60 wt.%. The powder contains Na2O in an amount of 0-25 wt.% and C in an amount of 0-10 wt.%. wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt.%) and F represents the total F content in the mold powder(wt.%). Also disclosed is a method for continuous steel casting which makes use of the mold powder.

4. 发明专利

JP2003001388A Continuous casting method for steel 有权
标题翻译：钢的连续铸造方法
公开(公告)号：JP2003001388A
公开(公告)日：2003-01-07
申请号：JP2001186333
申请日：2001-06-20
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： TANIZAWA YOSHINORI , KUMAKURA SEIJI , YAMANAKA AKIHIRO
IPC分类号： B22D11/20 , B22D11/128
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method for steel which enables manufacturing of a cast slab having little center segregation through both the entire length and the entire width of the cast slab.
SOLUTION: In a method to apply reduction after bulging on a rectangular cast slab of 150-370 mm thick, the reduction is applied with 2 pairs or more of reduction rolls at a reduction gradient of 1.5-5 mm/m in a first reduction stage where a reduction area covers from the highest upstream of a reduction area in a second reduction stage to a maximum of 6 m to the upstream side. In the second reduction stage, whose reduction area corresponds to a solid phase rate fs in the center of thickness of 0.20-0.95, the reduction is applied with a pair or two pairs or more of reduction rolls, with each rolling reduction amount of more than 15 mm and the reduction gradient of 40 mm/m or more. The total amount of rolling reduction in the first and second reduction stages is less than a thickness equivalent to the bulging.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够通过铸坯的整个长度和整个宽度制造具有很小中心偏析的铸坯的钢的连续铸造方法。解决方案：在150-370mm厚的矩形铸造板上进行膨胀后施加还原的方法中，在第一还原阶段以1.5-5mm / m的还原梯度施加2对或更多的还原辊其中减少区域从第二还原阶段的减少区域的最高上游覆盖到上游侧的最大值6m。在第二还原阶段，其还原面积对应于厚度中心为0.20-0.95的固相率fs，用一对或两对以上的还原辊进行还原，每个压下量大于 15mm，还原梯度为40mm / m以上。第一和第二还原阶段的压下量的总量小于与膨胀相当的厚度。

5. 发明专利

JP2001018042A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JP2001018042A
公开(公告)日：2001-01-23
申请号：JP19103399
申请日：1999-07-05
申请人： SUMITOMO METAL IND
发明人： TANIZAWA YOSHINORI , OTA KOZO , NOZAKI ISAO
IPC分类号： B22D11/128 , B22D11/10 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method with which a good internal quality cast slab having little center segregation and V segregation even at the end part thereof can be obtd. without development of the leakage of steel in the final stage of the casting. SOLUTION: In the continuous casting method which applies rolling reduction to a bulged cast slab until completing solidification after bulging the cast slab 2 including non-solidified part 2b, the draft at the unsteady casting time in the final stage of the casting is regulated to be

6. 发明专利

JP2000096181A STEEL SHEET FREE FROM UTS DEFECT IN WELD HEAT-AFFECTED ZONE, AND ITS MANUFACTURE 失效
公开(公告)号：JP2000096181A
公开(公告)日：2000-04-04
申请号：JP27166998
申请日：1998-09-25
申请人： SUMITOMO METAL IND
发明人： IKI HIROSHI , TANIZAWA YOSHINORI
IPC分类号： B22D11/128 , B22D11/16 , B22D11/20 , C22C38/00 , C22C38/04
摘要： PROBLEM TO BE SOLVED: To provide a steel sheet hardly causing UTS defect in the heat affected zone under severe welding conditions at large heat input welding, welding at high cooling velocity, etc., and its manufacturing method. SOLUTION: The steel sheet has a composition containing, by weight, 0.02-0.47% C, 0.3-2.5% Mn, =20 mm/m rolling reduction in a drawing direction to obtain a cast slab to be a rolling stock.

7. 发明专利

JPH08132204A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH08132204A
公开(公告)日：1996-05-28
申请号：JP27640894
申请日：1994-11-10
申请人： SUMITOMO METAL IND
发明人： OTA KOZO , YAMANAKA AKIHIRO , TANIZAWA YOSHINORI
IPC分类号： B22D11/20 , B22D11/128 , B22D27/09
摘要： PURPOSE: To effectively prevent the shrinkage flow causing center segregation by applying rolling reduction in a prescribed condition regardless of the variation in casting condition and the progress of solidification in the inner part of a cast slab. CONSTITUTION: In a continuous casting method applying the light rolling reduction in the solidified part at the end stage of the continuous cast slab, the starting point of the rolling reduction is set in the range of 0.0

8. 发明专利

JPH0760424A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH0760424A
公开(公告)日：1995-03-07
申请号：JP23086393
申请日：1993-08-24
申请人： SUMITOMO METAL IND
发明人： KASAI NOBUFUMI , TANIZAWA YOSHINORI , OTA KOZO
IPC分类号： B22D11/128 , B22D11/20
摘要： PURPOSE:To establish a continuous casting method, by which a cast slab having sound and high quality without seeing an internal defect of center segregation, etc., can stably be produced. CONSTITUTION:In the continuous casting of a metal, the temp. distribution of the cast slab continuously drawn from a mold 3 opened at the upper and the lower part is made to be the surface temp. at the corner part to the surface temp. at the center part in the width ratio of 0.95-1.1 by heating the ranges from both corner parts to at most 1/10 of the width in the cast slab at the position where dies not influence to the discharged descent flaw of the molten metal from an immersion nozzle in the mold. From just thereafter, rolling reduction is executed to make the range from the corner part in the cast slab to at most 1/10 of the width in the cast slab be the max. 10mm at the one side with one pair of saddle type rolls 10. The rolling reduction is gradulally executed to the center part of the width in the cast slab until the internal temp. at the position of 1/2 thickness of the cast slab becomes the temp. corresponding to 0.1 solid phase ratio, and after the outer surface finally forms to the cast slab having flat rectangular cross sectional surface, the light rolling reduction having 0.5-1.0mm/m is applied at the position, in where the temp. at the position of 1/2 thickness in the cast slab becomes the temp. corresponding to the solid phase ratio of 0.1-0.8.

9. 发明专利

JPH05237621A 失效
公开(公告)号：JPH05237621A
公开(公告)日：1993-09-17
申请号：JP7858992
申请日：1992-02-28
申请人： SUMITOMO METAL IND
发明人： TAKATANI KOJI , TANIZAWA YOSHINORI
IPC分类号： B22D11/10 , B22D11/115 , B22D11/128 , B22D11/16 , B22D11/20
摘要： PURPOSE:To obtain the uniform quality of a cast ingot scarcely having segregation at the center part by controlling the shape of unsolidified range by electromagnetic force at the time of continuously casting and uniformly executing rolling reduction to the unsolidified range. CONSTITUTION:Molten steel 2 supplied from an immersion nozzle 1 becomes discharging flow 3 toward short sides in a mold. Eddy current 5 is induced by an interaction with static magnetic field 4 impressed to this part to form a current loop. By the interaction between the induced current and the impressed magnetic field, Lorentz force 6 is acted in the reverse direction of the discharging flow to give braking force to fluid of the molten steel. In this result, the molten steel fluid pattern is controlled to the cross sectional fusiform, and in a speed distribution in the cross sectional surface of the ingot, the speed at the center part can be made at larger than the speed of both sides. To the ingot having the unsolidified range developed in such fluid condition, the rolling reduction can be executed according to this solidified shrinkage quantity.

10. 发明专利

JP2002248554A CONTINUOUS-CAST STEEL PIECE AND CASTING METHOD 失效
公开(公告)号：JP2002248554A
公开(公告)日：2002-09-03
申请号：JP2001046259
申请日：2001-02-22
申请人： SUMITOMO METAL IND
发明人： TANIZAWA YOSHINORI , KUMAKURA SEIJI
IPC分类号： B22D11/128 , B22D11/16 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous-cast steel piece having little center segregation in the whole width and length of the piece, and a method for casting the piece. SOLUTION: This invention relates to a continuous-cast steel piece having a rectangular cross section which is pressed by means of a pair of reduction rolls until the inside of the piece is fully solidified after the piece including part not solidified is bulged, wherein the difference between the maximum and minimum thicknesses in the cross section of the cast steel piece after pressed is 4% or less of the average thickness of both short edges of the cast piece. This invention also relates to a method for pressing the cast steel piece under the reduction force 1.5 to 10 times the static pressure of molten steel at the position of the pair of the reduction rolls per pair of the reduction rolls, in pressing the cast steel piece with the pressing amount equal to or less than the bulging amount by means of one or more pairs of the reduction rolls until the inside of the cast steel piece is fully solidified after the cast piece is bulged.

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