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    • 2. 发明专利
    • Continuous casting method of steel
    • 钢的连续铸造方法
    • JP2008173667A
    • 2008-07-31
    • JP2007009396
    • 2007-01-18
    • Nippon Steel Corp新日本製鐵株式会社
    • SEZE AKIFUMIFUKUNAGA SHINICHIUEDA KAZUNORI
    • B22D11/108B22D11/00B22D11/10B22D41/50B22D41/54C22C38/00C22C38/06
    • PROBLEM TO BE SOLVED: To provide a continuous casting method of steel, which method hardly causes the choke of a nozzle even when REM has been added into molten steel.
      SOLUTION: In the continuous casting method of steel, molten steel 11 is poured into a casting mold 16 via one or more nozzles 13 to 15, and cast ingots 17 are continuously taken out from the lower portion of the casting mold 16. The molten steel 11 contains 0.0003 mass% or more of REM, and further is adjusted such that the ratio of the concentration of Al
      2 O
      3 to the concentration of REM-O in an inclusion satisfies the following condition, Al
      2 O
      3 /REM-O≥0.25, and further a refractory material 24 containing 10 mass% or more of CaO is arranged on at least one of the nozzles 13 to 15 in at least part of the internal surface to be brought into contact with the molten steel 11.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供钢的连续铸造方法,该方法即使在将REM加入钢水中也难以引起喷嘴的扼流圈。 解决方案:在钢的连续铸造方法中,通过一个或多个喷嘴13至15将钢水11注入铸模16中,从铸模16的下部连续取出铸锭17。 钢水11含有0.0003质量%以上的REM,并且进一步调节使得Al 2 3 的浓度与REM-O浓度的比值 在包含物满足以下条件的情况下,将Al含量为10质量%以上的耐火材料24进一步配置在 在至少部分内表面中的喷嘴13至15中的至少一个将与钢水11接触。版权所有(C)2008,JPO&INPIT
    • 3. 发明专利
    • Immersion nozzle for continuous casting
    • 连铸喷嘴
    • JP2005262301A
    • 2005-09-29
    • JP2004082316
    • 2004-03-22
    • Nippon Steel Corp新日本製鐵株式会社
    • FUKUNAGA SHINICHIUEDA KAZUNORI
    • B22D11/10B22D41/54
    • PROBLEM TO BE SOLVED: To provide an immersion nozzle for continuous casting which is used for pouring molten steel into a casting mold and realizes an improvement in cast billet quality or stability of casting by suppressing erosion of the immersion nozzle and inhibiting the clogging or blocking of the nozzle caused by inclusions stuck to the immersion nozzle.
      SOLUTION: The continuous casting immersion nozzle is composed of a tubular body that pours molten steel into the casting mold and an immersion section that has a plurality of discharging holes provided continuously to the tubular body, wherein an integrally formed dolomite-graphitic refractory containing 11-30 mass% carbon in a dolomite clinker is arranged inside the immersion section of the refractory constituting immersion section that has the tubular body and the plurality of discharging holes, further in the upper part of the above refractory, an interior body having as the main components, 25-65 mass% CaO and 25-70 mass% MgO contained in the refractory in which the dolomite clinker is mixed, is provided.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于连续铸造的浸渍喷嘴,其用于将钢水浇注到铸模中,并通过抑制浸入喷嘴的侵蚀并抑制堵塞来实现铸坯质量的提高或铸造的稳定性 或由夹杂物粘附到浸没喷嘴引起的喷嘴堵塞。 解决方案:连铸浸入式喷嘴由将铸钢浇注到铸模中的管状体和具有连续设置在管状体上的多个排放孔的浸没部分组成,其中整体形成的白云石 - 石墨耐火材料 在白云石熟料中含有11〜30质量%的碳,在具有管状体和多个排出孔的耐火材料构成浸渍部的浸渍部内配置在上述耐火材料的上部,内部主体为 提供了混合白云石熟料的耐火材料中所含的主要成分为25〜65质量%的CaO和25〜70质量%的MgO。 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • Mold for continuous casting
    • 模具连续铸造
    • JP2012000626A
    • 2012-01-05
    • JP2010136277
    • 2010-06-15
    • Mishima Kosan Co LtdNippon Steel Corp三島光産株式会社新日本製鐵株式会社
    • SUENAGA KENYAHIRANO SHINICHIOKAZAKI TAKESHIOGAWA YUICHIFUKUNAGA SHINICHIOKAWA TAKESHIUEDA KAZUNORI
    • B22D11/04B22D11/055B22D11/059
    • PROBLEM TO BE SOLVED: To provide a mold for continuous casting which can manufacture a cast piece favorable in quality by suppressing a delay of the coagulation of the cast piece.SOLUTION: A swollen part 22 with a water level position of molten steel as an upper position P1 and a part apart from the upper position toward a lower part by 300 mm or longer as a lower position P2 is formed at the side 21 of a molten steel contact face 21 of a cooling member 12 of the mold 10 for continuous casting, a vertical cross section of the swollen part is formed of three or more and not more than eight linear parts L1 to L3 which are continuous to the lower position from the upper position, angles θ1, θ2 formed of the adjacent linear parts are brought into a range of not smaller than 174° and not larger than 179.97°, the maximum height h of the swollen part with a straight line L4 connecting the upper position and the lower position as a bottom side is brought into a range of not lower than 0.2 mm and not higher than 5 mm, water introduction grooves 17 to 19 between adjacent fastener 15 in the vertical direction at the rear face side of the cooling member are formed wide in width, and flat cross-sectional areas of the water introduction grooves 17, 19 at side portions of the fastener are brought into a range of minus 20% to plus 20% of the flat cross-sectional area of the water introduction groove between the fastener in the vertical direction.
    • 要解决的问题:提供一种连续铸造用模具,其能够通过抑制铸件的凝固延迟来制造质量上良好的铸件。 解决方案:在侧面21处形成具有作为上部位置P1的钢水的水位位置的膨胀部分22和从上部位置向下部向下部延伸300mm或更长的部分作为下部位置P2 在用于连续铸造的模具10的冷却构件12的钢水接触面21中,膨胀部的垂直截面形成为与下部连续的三个以上且不多于八个直线部分L1〜L3 从相邻的直线部形成的角度θ1,θ2从上部位置的位置变为不小于174度且不大于179.97°的范围,具有连接上部的直线L4的膨胀部的最大高度h 作为底侧的下方位于不低于0.2mm且不高于5mm的范围内,相邻的紧固件15之间在冷却构件的后表面侧的垂直方向上的水引入槽17至19 形成w 宽度方向上的水的导入槽17,19的宽度方向的平坦的横截面积和紧固件的侧部的水导入槽17,19的平坦的横截面积被设定在导水槽的平坦截面积的20%〜20%的范围内 紧固件在垂直方向。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Mold for continuous casting
    • 模具连续铸造
    • JP2011218383A
    • 2011-11-04
    • JP2010087936
    • 2010-04-06
    • Mishima Kosan Co LtdNippon Steel Corp三島光産株式会社新日本製鐵株式会社
    • UEDA KAZUNORIOKAWA TAKESHIFUKUNAGA SHINICHISUENAGA KENYAHIRANO SHINICHIOKAZAKI TAKESHIOGAWA YUICHI
    • B22D11/04B22D11/055
    • PROBLEM TO BE SOLVED: To provide a mold for continuous casting, which enables the manufacture of a good-quality cast slab by suppressing a delay in the solidification of the cast slab.SOLUTION: A swelling portion 21, in which a molten metal surface position of molten steel 13 is set as an upper position P1 and in which a position 300 mm or more below the upper position P1 is set as a lower position P2, is provided on the side of a molten steel contact surface 20 of a cooling member 12 of the mold 10 for continuous casting; a vertical section of the swelling portion 21 is constituted of three to eight continuous linear portions L1-L3 from the upper position P1 to the lower position P2; angles θ1 and θ2 made by the adjacent linear portions L1-L3 are set to fall within the range of 174-179.97 degrees; the maximum height (h) of the swelling portion 15, the base of which is a straight line L4 connecting the upper and lower positions P1 and P2, is set to fall within the range of 0.2-5 mm; and a spacer 27 provided with partition portions 31 and 32 is disposed in a space area 26 formed between a recessed portion of the cooling member 12 and a supporting member 16 therefor, so as to form supercooling water-conducting grooves 17-19.
    • 要解决的问题:提供一种连续铸造用模具,其能够通过抑制铸坯的凝固延迟来制造优质铸坯。 解决方案:将钢水13的熔融金属表面位置设定为上部位置P1并且其中位于上部位置P1以下300mm以上的位置的膨胀部21被设定为下部位置P2, 设置在用于连续铸造的模具10的冷却构件12的钢水接触表面20的侧面上; 隆起部分21的垂直部分由从上位置P1到下位置P2的三到八个连续线性部分L1-L3构成; 由相邻的线性部分L1-L3制成的角度θ1和θ2设定在174-179.97度的范围内; 膨胀部15的最大高度(h)设定为0.2〜5mm的范围,该隆起部15的基部是连接上下位置P1,P2的直线L4。 并且设置有分隔部31,32的间隔件27设置在形成在冷却部件12的凹部与支撑部件16之间的空间区域26中,形成过冷却导水槽17-19。 版权所有(C)2012,JPO&INPIT