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1. 发明专利

JP2011098388A Continuous casting method for steel and extra-thick steep plate 有权
标题翻译：钢和超厚板的连续铸造方法
公开(公告)号：JP2011098388A
公开(公告)日：2011-05-19
申请号：JP2009256460
申请日：2009-11-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , TAJIMA NAOKI , OTA KOZO , YANO YUICHI
IPC分类号： B22D11/128 , B22D11/00 , B22D11/16 , B22D11/20 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method capable of producing a slab having stable inside quality by suppressing the occurrence of fine cracks caused by rolling reduction in the boundary between a negatively-segregated part and a bulk part. SOLUTION: Regarding the continuous casting method in which a slab including an un-solidified part is subjected to rolling reduction using at least a pair of rolling reduction rolls arranged in a continuous casting machine or at the edges of the machine, and, solidified shells on both the sides in the thickness direction of the slab are press-stuck to form a negatively-segregated part in the vicinity of the central part in the thickness direction of the slab after solidification, a product between the thickness D(mm) of the negatively-segregated part in the thickness direction of the slab and the content of an S component [S](ppm) in the steel is allowed to satisfy 0 COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供一种连续铸造方法，其能够通过抑制由负极偏析部分和块状部分之间的边界中的轧制减少引起的细小裂纹的发生而产生具有稳定内部质量的板坯。解决方案：关于使用至少一个设置在连续铸造机中或机器边缘处的至少一对轧制压下辊来对含有未固化部分的板坯进行轧制压下的连续铸造方法，在板坯的厚度方向的两侧的固化壳被压固，在凝固后在板坯的厚度方向上的中央部附近形成负偏析部，厚度D（mm）的板坯厚度方向上的偏析部分和钢中S成分（S）的含量满足0 <[S]×D≤60。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010149150A Continuous casting method for steel 有权
标题翻译：钢的连续铸造方法
公开(公告)号：JP2010149150A
公开(公告)日：2010-07-08
申请号：JP2008330188
申请日：2008-12-25
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , NOGAMI YUTAKA , MURAKAMI TOSHIHIKO , YAMANAKA AKIHIRO , TAKATANI KOJI , SATO YASUHIRO , ITO YOSHIKI
IPC分类号： B22D11/128 , B22D11/20
CPC分类号： B22D11/128 , B22D11/114 , B22D11/1206 , B22D11/16 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method for steel where a slab is hammered and vibrated under proper conditions, thus segregation and central porosities can be reduced. SOLUTION: In the continuous casting method for steel where, when a slab having a rectangular cross-sectional face is cast, hammering vibration devices are arranged on both the sides of the short side faces of the slab including an unsolidified part, and the short side faces of the slab are continuously hammered, thus casting is performed while applying vibration to the slab, vibration energy, the interaxial distance between guide rolls and unsolidified thickness are adjusted in such a manner that, in the intersections of a dislocation curve δ(x) and a straight line δ(x)=0.10 mm in the slab thickness direction of the long side face of the slab defined by formulae (1) and (2) generated by the hammering of the short side faces, the distance from the hammering position of the crosssection far from an original point reaches ≥200 mm, and the short side faces are hammered:(1)δ(x)=exp[-1.5×äIn(x/(200×(ΔR/ΔR 0 ) 0.587 ))} 2 ]×δ max ; and (2) δ max =L 0 ×(E/E 0 ) 0.5 ×(ΔR/ΔR 0 )×(t/t 0 ) 0.446 . COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种在适当条件下将板坯锤击并振动的钢的连续铸造方法，因此可以减少偏析和中心孔隙率。解决方案：在用于铸造具有矩形横截面的板坯的钢的连续铸造方法中，在包括非固化部分的板坯的短边面的两侧上设置有锤击振动装置，并且板坯的短边面被连续锤击，因此在对板坯施加振动的同时进行铸造，振动能量，导向辊之间的轴间距离和未固化厚度被调节为使得在位错曲线δ （1）和（2）所定义的板坯长边面的板坯厚度方向上的直线（x）和直线δ（x）= 0.10mm，距离截距远离原点的锤击位置达到200mm以上，短侧面被锤击：（1）δ（x）= exp [-1.5×äIn（x /（200×（ΔR/ΔR 0 ） 0.587 ））} 2 ]×δ MAX ; 和（2）δ max = L 0 ×（E / E 0 ）SP 0 ）×（T / T 0 ） 0.446 。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2007302908A High tensile strength steel plate and its manufacturing method 审中-公开
标题翻译：高强度钢板及其制造方法
公开(公告)号：JP2007302908A
公开(公告)日：2007-11-22
申请号：JP2006110976
申请日：2006-04-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： NISHIO MASARU , KUMAKURA SEIJI , KASAI NOBUFUMI , SHIRAI YOSHIHISA , YAMANAKA AKIHIRO , HIRASHIRO TADASHI , SETA ICHIRO
IPC分类号： C22C38/00 , B22D11/128 , B22D11/20 , C21D8/02 , C22C38/06 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide an extra thick high tensile strength steel plate of ≥60 HT which is free from UST defects due to center porosities and has excellent internal quality, and to provide its manufacturing method. SOLUTION: (1) The steel plate is a 600 MPa grade high tensile strength steel plate of ≥60 mm plate thickness, which is manufactured from a continuously cast slab and characterized in having: a composition composed of, by mass, 0.02 to 0.15% C, 0.01 to 0.5% Si, 1.0 to 1.8% Mn, ≤0.02% P, ≤0.015% S, ≤0.008% N, 0.003 to 0.07% Al and the balance Fe with impurities; a carbon equivalent ranging from 0.3 to 0.5%; and a volume of center porosities ranging from 0.2×10 -4 to 1.0×10 -4 cm 3 /g. This steel plate can further contain one or more elements among Cu, Ni, Cr, Mo, Nb, V, Ti, B, Ca, Mg and REM. (2) The method for manufacturing the 600 MPa grade high tensile strength steel plate of ≥60 mm plate thickness is characterized in that: continuous casting is performed under the condition that, when (p) and (r) represent a rolling reduction at the end stage of solidification in continuous casting and a draft in the rolling of a slab into a plate, respectively, inequality r≥-0.25×p+3.75 is satisfied; and the resultant cast slab is heated to 900 to 1,250°C and rolled, and rolling is finished at ≥750°C finishing temperature. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供≥60HT的超厚的高抗拉强度钢板，由于中心孔隙度而没有UST缺陷并具有优良的内部质量，并提供其制造方法。解决方案：（1）钢板是由连续铸造的板坯制成的板厚为60mm的600MPa级的高抗拉强度钢板，其特征在于，具有以质量计0.02 至0.15％C，0.01〜0.5％Si，1.0〜1.8％Mn，≤0.02％P，≤0.015％S，≤0.008％N，0.003〜0.07％Al，余量为Fe与杂质; 碳当量为0.3至0.5％; 以及从0.2×10 -4 至1.0×10 -4 cm 3 / SP / g的中心孔隙体积。该钢板还可以含有Cu，Ni，Cr，Mo，Nb，V，Ti，B，Ca，Mg和REM中的一种或多种元素。（2）厚度≥60mm的600MPa级高抗拉强度钢板的制造方法的特征在于，在（p）和（r）表示轧制压下量的条件下进行连续铸造分别在连续铸造中凝固的末期阶段和将板坯轧制成板的牵伸力分别满足不等式r≥-0.25×p + 3.75; 将得到的铸坯加热至900〜1250℃并进行轧制，轧制结束于≥750℃的终轧温度。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2007196265A Extra-thick steel plate excellent in inner quality, and continuous casting method for a cast slab for extra-thick steel plate 有权
标题翻译：外部优质的超细钢板，以及用于超厚钢板的铸造板的连续铸造方法
公开(公告)号：JP2007196265A
公开(公告)日：2007-08-09
申请号：JP2006018183
申请日：2006-01-26
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , SATO YASUHIRO , KAMO TAKAHIRO
IPC分类号： B22D11/128 , B21B1/38 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To manufacture a high-strength extra-thick steel plate, which is made from a cast slab continuously cast using an existing rolling mill for a thick plate, which shows no defect in an ultrasonic flaw detection test, and which excels in inner quality.
SOLUTION: A slab is cast in such a way that its width central part including an unsolidified part is subjected to rolling-reduction by 3-15 mm with a pair of reduction rolls while the solid-phase ratio of its thickness central part is in a range of ≥0.8 and 0 /r, wherein Vp
0 is a converted central porosity volume calculated from the tensile strength of the extra-thick steel plate.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了制造由使用现有的厚板轧机连续铸造而成的超强度超厚钢板，其在超声波探伤试验中没有缺陷，内在品质优异。解决方案：将板坯以这样的方式铸造，即其包括非固化部分的宽度中心部分用一对还原辊进行3-15mm的轧制压下，而其厚度中心部分的固相比在≥0.8和<1.0的范围内。在直到精轧的压下率r为1.5-4.0的条件下，通过将铸坯作为材料进行热轧，得到超厚钢板。超厚钢板的拉伸强度X的水平为400-600MPa级。超厚钢板的厚度中心部分的中心孔隙体积Vp满足关系：Vp 0 / r，其中Vp 0 是转换中心孔体积根据超厚钢板的拉伸强度计算。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007136496A Continuous casting method and continuously cast slab 有权
标题翻译：连续铸造方法和连续铸造
公开(公告)号：JP2007136496A
公开(公告)日：2007-06-07
申请号：JP2005332768
申请日：2005-11-17
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YAMANAKA AKIHIRO , HIRASHIRO TADASHI
IPC分类号： B22D11/128 , B22D11/16 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a method for continuously casting a slab for producing a steel sheet having high performance of HIC (hydrogen-induced cracking) resistance, reducing center-porosity and macro- and semi-macro-segregation and to provide a continuously cast slab.
SOLUTION: (1) The method for continuously casting the cast slab for producing the steel sheet excellent in the hydrogen-induced cracking resistance, is performed as the followings. In the cast slab position having ≤60mm solidified shell thickness at one side, after bulging in the range of 3-10mm cast slab thickness, while keeping this state, the cast slab at the interval from the cast slab position where the solid phase is generated in the center part of the thickness, to the cast slab position where the center solid phase ratio is -4 (cm
3 /g) porosity volume in the thickness center part of the cast slab.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：待解决的问题：提供一种用于连续铸造板坯以生产HIC（氢诱发开裂）性能高的钢板，降低中心孔隙率和宏观半宏观偏析的方法，以及提供连续铸造的板坯。 <1>解决方案：（1）如下进行连续铸造用于生产耐氢致裂纹性优异的钢板的铸造板的方法。在一侧具有≤60mm凝固外壳厚度的铸坯坯料中，在3-10mm铸坯厚度的范围内膨胀之后，在保持该状态的同时，铸造板坯与产生固相的板坯位置间隔在厚度的中心部分到中心固相比<0.8的铸坯位置在膨胀厚度范围内与铸造方向呈锥形状逐渐减小，并且轧制还原为通过在铸造板坯位置使用一级轧制轧制对，在中间固相比为0.8-0.95的范围内，在铸坯厚度方向为5-10mm的范围内进行阶段差动状态。（2）在上述（1）所示的连续铸造法铸造的铸坯中，钢板的连铸坯具有≤2×10 -4 （cm 3 / g）铸坯厚度中心部分的孔隙体积。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2004307931A Continuously cast piece, and casting method therefor 有权
标题翻译：连续铸造及其铸造方法
公开(公告)号：JP2004307931A
公开(公告)日：2004-11-04
申请号：JP2003103009
申请日：2003-04-07
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , KUMAKURA SEIJI , MURAKAMI TOSHIHIKO
IPC分类号： B22D11/128 , B22D11/16 , B22D11/22 , C22C38/00 , C22C38/04
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method where a cast piece including an unsolidified part is subjected to rolling reduction after bulging, and central segregation is uniformly reduced over the whole in the width direction of the cast piece, and to provide the cast piece.
SOLUTION: In the continuous casting method, a cast piece is subjected to bulging, and the cast piece including an unsolidified part at the inside is subjected to rolling reduction by at least a pair of rolling reduction rolls. The rolling reduction is started at a position in which the central solid phase ratio in the cast piece is ≤0.2, and is performed at a draft satisfying the inequality (1) of D
3 ≤D
1 ; wherein, D
3 is the average liquid phase thickness (mm) of the unsolidified part in the position at which the rolling reduction is started in the cast piece defined by the following formula (2); and D
1 is the draft (mm) of the cast piece. The formula (2) is D
3 =[(1.2-fs)/2]×D
2 ; wherein, D
2 is the thickness (mm) of the unsolidified part in the cast piece at the position where the rolling reduction is started in the cast piece; and fs is the central solid phase ratio of the cast piece in the position at which the rolling reduction is started in the cast piece.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种连续铸造方法，其中包括未固化部分的铸件在膨胀之后经受轧制压下，并且在铸件的宽度方向上整体上均匀地减少中心偏析，并且提供铸件。解决方案：在连续铸造方法中，铸件膨胀，并且在内部包括未固化部分的铸件通过至少一对轧制压下辊进行轧制压下。在铸件的中心固相比≤0.2的位置开始轧制压下，并且以满足D 3 ≤D的不等式（1） 1 ; 其中，D 3 是在由下式（2）定义的铸件中在起始轧制压下的位置处的非固化部分的平均液相厚度（mm）; D＆lt; SB＆gt; 1＆lt; / SB＆gt;是铸件的吃水（mm）。式（2）为D 3 = [（1.2-fs）/ 2]×D 2 其中，D 2 是在铸件中开始轧制压下的位置处铸件中的非固化部分的厚度（mm） fs是铸件在铸造件中开始轧制压下的位置的中心固相率。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2010247160A Method for continuously casting steel and cast slab produced by the method 有权
标题翻译：方法生产的连续铸造钢和铸坯的方法
公开(公告)号：JP2010247160A
公开(公告)日：2010-11-04
申请号：JP2009096099
申请日：2009-04-10
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , TAJIMA NAOKI , OTA KOZO , OKADA NOBUHIRO
IPC分类号： B22D11/20 , B22D11/103 , B22D11/128 , B22D11/18
摘要： PROBLEM TO BE SOLVED: To provide a continuous-casting method capable of preventing the deterioration of quality at the boundary part of a sequence casting.
SOLUTION: In the continuous-casting method, a cast-slab containing non-solidified part is rolling-reduced by using rolling-reduction pair set in the continuous-casting machine or the end part of the machine. When the sequence casting is performed, the molten steel weight in a tundish at the interval from the supplying stop of first charging of molten steel to the supplying start of after charging of molten steel secures ≥2/3 of the molten steel weight when the continuous-casting in the steady state is performed, and the lowering of the over-heat degree of the molten steel in the tundish, is restrained within ≤10°C at this timing. Further, the molten steel casting speed at the interval from the supplying stop of the first charging of molten steel to the supplying start of the after charging of molten steel secures the same casting speed as the casting speed in the steady state, and the rolling-reduction rate when the unsolidified part in the cast slab, in which the molten steel corresponding to the molten steel exists in the tundish, is cast at the interval from after supplying stop of the first charging of molten steel to the supplying start of the after charging of molten steel is made to target rolling-reduction rate or higher necessary to the discharge of non-solidified concentrating molten steel.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止顺序铸造的边界部分的质量劣化的连续铸造方法。解决方案：在连续铸造方法中，通过使用设置在连续铸造机或机器的端部中的滚动减少对，将含有非固化部件的铸造板坯进行轧制。当进行顺序铸造时，从第一次充入钢水的供给停止点到钢水充填开始之间的中间包中的钢水重量，当连续的钢水重量保持≥2/ 3 进行稳定状态的浇铸，并且在该时刻将中间包中的钢水的过热度的降低抑制在≤10℃以内。此外，从钢水的第一次充填的供给停止到钢水的充填的供给开始之间的间隔的钢水浇铸速度确保与稳定状态下的铸造速度相同的铸造速度，当钢水中对应于钢水的钢水中的非固化部分在钢水的第一次充填停止之后到后充电的供给开始之间的间隔被铸造时的压下率使钢水的目标在不凝固的浓缩钢水排出所需的压下率以上。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2010179342A Method for continuously casting steel, and cast slab manufactured by the same method 有权
标题翻译：连续铸钢的方法和由该方法制造的铸件
公开(公告)号：JP2010179342A
公开(公告)日：2010-08-19
申请号：JP2009025593
申请日：2009-02-06
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , OKADA NOBUHIRO , TAJIMA NAOKI , OTA KOZO
IPC分类号： B22D11/128 , B22D11/115 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method for manufacturing a cast slab having stable internal quality during a long time operation by improving the dilution of concentration of segregated components by stirring a molten metal.
SOLUTION: In a method for continuously casting steel, rolling reduction is applied to a cast slab containing a non-solidified part with use of reduction rolls arranged in a continuous casting machine. An electromagnetic stirring device for stirring the molten metal in the non-solidified part of the cast slab is arranged on the upper stream side of the reduction roll pair in the casting direction. The flowing direction of the molten metal in the non-solidified part in the width-direction of the cast slab is periodically changed in one and the other direction of the width-direction of the cast slab. An applying time of current to the electromagnetic stirring device is set such that each of an accumulated flowing distance D of the molten metal in the non-solidified part during the flowing period in the one direction and in the other direction is made equal to or longer than the width Wo of the non-solidified part of the cast slab at the position where the non-solidified part is stirred by the electromagnetic stirring device.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：待解决的问题：提供一种连续铸造方法，用于通过搅拌熔融金属来改善偏析组分的浓度稀释，从而在长时间的操作中制造具有稳定内部质量的铸坯。解决方案：在用于连续铸造钢的方法中，使用连续铸造机中的还原辊将轧制压下应用于含有非固化部分的铸造板坯。用于搅拌铸坯的非固化部分中的熔融金属的电磁搅拌装置在铸造方向上设置在还原辊对的上游侧。在铸坯的宽度方向上的非凝固部分中的熔融金属的流动方向在铸坯的宽度方向的一个方向和另一个方向上周期性地变化。将电流施加到电磁搅拌装置的施加时间被设定为使得在一个方向和另一个方向上的流动期间的非固化部分中的熔融金属的累积流动距离D分别等于或等于比通过电磁搅拌装置搅拌非凝固部分的位置处的铸坯的未固化部分的宽度Wo更大。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009006381A Method for continuously casting steel 有权
标题翻译：连续铸钢的方法
公开(公告)号：JP2009006381A
公开(公告)日：2009-01-15
申请号：JP2007171731
申请日：2007-06-29
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO , SATO YASUHIRO , YANO YUICHI
IPC分类号： B22D11/128 , B22D11/20
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing technique of a cast slab for manufacturing an ultra-thick steel plate accompanying no lowering of the performance caused by negative segregation at the center part of the cast slab, in a continuous casting method for steel, performing rolling-reduction under state of non-solidifying.
SOLUTION: In the continuous casting method for reducing the center segregation by rolling-reducing the cast slab containing non-solidified part using the rolling-reduction roll pair; regarding at least one component element contained for improving a mechanical property or a corrosion-resistant property, and according to the negative segregation degree of the component element as a value obtained by dividing the content of the component element at the thickness center part of the cast slab after rolling-reduction with the average content of the component element at the casting time, the steel is cast by increasing the content of the component element in the molten steel at the casting time more than the lower limit in the targeted content range in the product. The appropriate range of the increasing quantity of the content of the above component element in the molten steel is preferably decided based on the targeted range of the component element in the product, especially the lower limit value, and the range of the negative segregation degree at the thickness center part of the cast slab, especially the minimum value.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于制造超厚钢板的铸造板的制造技术，在铸造中心部分不会降低由负偏析引起的性能的连续铸造方法钢，在非固化状态下进行轧制压下。解决方案：在通过使用滚动 - 还原辊对轧制还原含有非固化部件的铸造板材来减少中心偏析的连续铸造方法中，关于包含用于提高机械性能或耐腐蚀性的至少一种成分元素，并且根据构成元素的负偏析度作为通过将铸件的厚度中心部分的成分元素的含量除以所得到的值轧制后的板坯在铸造时具有成分元素的平均含量，通过在浇铸时将钢水中的成分元素的含量增加到目标含量范围的下限来铸造钢产品。钢水中的上述成分元素的含量的增加量的适当范围优选基于产品中的成分元素的目标范围，特别是下限值，以及负析出度在铸坯厚度中心部分，特别是最小值。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2008093720A Continuous casting method for metal 有权
标题翻译：金属连续铸造方法
公开(公告)号：JP2008093720A
公开(公告)日：2008-04-24
申请号：JP2006280339
申请日：2006-10-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASHIRO TADASHI , YAMANAKA AKIHIRO
IPC分类号： B22D11/128 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a continuous casting method where, even in the rolling reduction for the unsolidified part in a slab by simple rolling-reduction equipment, a sufficient rolling draft can be imparted, thus the internal cracks of the slab can be suppressed, and further, central segregation can be reduced.
SOLUTION: Regarding the continuous casting method for a metal, when, using rolling reduction rolls as a pair in the upper and lower sides arranged in a continuous casting machine or at the machine edge part, a slab including an unsolidified part is subjected to rolling reduction, the lower roll in the rolling reduction rolls as a pair is projected to the upper part than the lower side pass line in the slab, and rolling reduction is performed. In this case, on the upstream side than the rolling reduction position, the unsolidified part in the slab is not bulged, or, in the central part in the lateral direction of the slab, it is bulged within the range of ≤5 mm in the thickness direction, the projecting amount of the lower roll to the upper part than the lower side pass line in the slab is controlled to ≥30% of the objective total draft, and, in a state where the rolling reduction is progressed by ≥80% of the objective total draft, the upper solidified shell and the lower solidified shell on the long side in the slab are stuck by pressure.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种连续铸造方法，即使在通过简单的轧制设备在板坯中的非固化部分的轧制减少中，也可以赋予足够的轧制力，因此板坯的内部裂纹可以抑制，进一步降低中心偏析。＆lt; P＆gt;解决方案：关于金属的连续铸造方法，当在连续铸造机中或在机器边缘部分配置的上下侧中使用轧制压下辊时，将包括非固化部分的板坯对于轧制压下，轧制压下辊中的下辊在板坯中的下侧轧制线上方突出到上部，并进行轧制压下。在这种情况下，在轧制压下位置的上游侧，板坯中的未固化部分不膨胀，或者在板坯的横向方向的中心部分中，其膨胀在≤5mm的范围内厚度方向，将板坯的下侧通过线的下辊与上部的突出量控制为目标总吃水深度的30％以上，在轧制压下率进行≥80％的状态下，的目标总吃水量，板坯长边上的上凝固壳和下固化壳被压力卡住。版权所有（C）2008，JPO＆INPIT

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