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    Method of continuous casting
    1.
    发明授权
    Method of continuous casting 失效
    连铸方法

    公开(公告)号：US5839502A

    公开(公告)日：1998-11-24

    申请号：US746492

    申请日：1996-11-12

    申请人： Kenzo Ayata ,  Hideo Mori ,  Susumu Ishiguro ,  Masaki Nitta

    发明人： Kenzo Ayata ,  Hideo Mori ,  Susumu Ishiguro ,  Masaki Nitta

    IPC分类号： B22D11/00 ,  B22D11/12 ,  B22D11/128 ,  B22D11/20 ,  B21B1/46

    CPC分类号： B22D11/1206

    摘要： In a method of continuous casting for rolling down a cast strand at the final stage of solidification to reduce segregation and center porosity at the center of the casting as much as possible and in particular prevent spot-shaped segregation, the rolling down is started after the center solid phase ratio of the casting reaches 0.2 and the rolling down is executed so as to compensate the total amount of volume contraction by solidification and cooling of strand in the section of the rolling down until the center solid phase ratio reaches 0.9 and thereafter the rolling down in continuously executed by a rolling down gradient of 0.08%/m or more to 1.5%/m or less.

    摘要翻译： 在连续铸造的过程中，在固化的最后阶段下降铸造线材的方法，以尽可能地减少铸件中心处的偏析和中心孔隙率，特别是防止点状偏析， 铸件的中心固相比达到0.2，并且执行轧制，以便在轧制部分中的线材的固化和冷却之间补偿总体积收缩量，直到中心固相比达到0.9，然后轧制 通过0.08％/ m以上的下降梯度连续执行至1.5％/ m以下。

    Continuous casting method
    2.
    发明授权
    Continuous casting method 失效
    连铸法

    公开(公告)号：US5634513A

    公开(公告)日：1997-06-03

    申请号：US525008

    申请日：1995-09-08

    申请人： Susumu Ishiguro ,  Masaki Nitta ,  Kenzo Ayata ,  Hideo Mori

    发明人： Susumu Ishiguro ,  Masaki Nitta ,  Kenzo Ayata ,  Hideo Mori

    IPC分类号： B22D11/128 ,  B22D11/12 ,  B22D11/20 ,  B21B1/46

    CPC分类号： B22D11/1206

    摘要： To provide a continuous casting method to diminish as much as possible center segregation and center porosity in the center of the cast piece, structure, a continuous casting method includes the application of reduction to a cast piece in the final solidification stage of the cast piece draw out process of continuous casting. The reduction is commenced at a point after the center solid fraction of the cast piece has reached 0.2, and the reduction gradient is decreased as the center solid fraction grows larger. The enlargement of the center solid fraction is divided into at least three zones with an optimal reduction gradient (%/m) established for each of the zones.

    摘要翻译： 为了提供连续铸造方法以尽可能减少铸件中心的中心偏析和中心孔隙度，结构，连续铸造方法包括在铸件的最终凝固阶段中对铸件应用还原 连铸过程。 在铸件的中心固体部分达到0.2之后的一点开始还原，随着中心固体部分增大，还原梯度降低。 将中心固体部分的扩大分为至少三个区域，其中为每个区域建立了最佳的还原梯度（％/ m）。

    Method and device for electromagnetically regulating pouring rate in continuous casting
    4.
    发明授权
    Method and device for electromagnetically regulating pouring rate in continuous casting 失效
    用于连续铸造电磁调节浇注速率的方法和装置

    公开(公告)号：US4615376A

    公开(公告)日：1986-10-07

    申请号：US715830

    申请日：1985-03-25

    申请人： Takasuke Mori ,  Kenzo Ayata ,  Takahiko Fujimoto

    发明人： Takasuke Mori ,  Kenzo Ayata ,  Takahiko Fujimoto

    IPC分类号： B22D11/10 ,  B22D11/103 ,  B22D11/18 ,  B22D37/00 ,  B22D41/08 ,  B22D27/02

    CPC分类号： B22D11/18 ,  B22D41/08

    摘要： A device for electromagnetically regulating the pouring rate in continuous casting, including a cylindrical molten steel container having a molten steel inlet formed in a peripheral section of an upper surface thereof and a molten steel outlet formed in central section of a lower surface thereof to pour the molten steel into a mold, and electromagnetic coils disposed around the side wall of the molten steel container so as to generate a rotating magnetic field perpendicularly to the side wall. The pouring rate is determined by the interactive function of the head of the molten steel in the tundish disposed above the molten steel container with the outlet thereof joined to the inlet of the molten steel container, the intensity of the rotating magnetic field, namely, the magnitude of the electric current supplied to the electromagnetic coils, and the size of the molten steel outlet, namely, a replaceable pouring nozzle.

    摘要翻译： 一种用于电磁调节连续铸造中的浇注速度的装置，包括一个在其上表面的周边部分形成有钢水入口的圆柱形钢水容器，以及形成在其下表面中部的钢水出口， 将钢水注入模具，以及围绕钢水容器的侧壁设置的电磁线圈，以产生垂直于侧壁的旋转磁场。 浇注速度由钢水容器的钢水容器的中间包中的钢水头的相互作用决定，钢水容器的出口与钢水容器的入口接合，中间包的旋转磁场强度即 提供给电磁线圈的电流的大小以及钢水出口的尺寸，即可更换的倾倒喷嘴。

    Method for the continuous production of cast steel strands
    6.
    发明授权
    Method for the continuous production of cast steel strands 失效
    铸钢丝连续生产方法

    公开(公告)号：US4671335A

    公开(公告)日：1987-06-09

    申请号：US899793

    申请日：1986-08-25

    申请人： Kenzo Ayata ,  Kiichi Narita ,  Takasuke Mori ,  Takahiko Fujimoto

    发明人： Kenzo Ayata ,  Kiichi Narita ,  Takasuke Mori ,  Takahiko Fujimoto

    IPC分类号： B22D11/115 ,  B22D11/12 ,  B22D11/04 ,  B22D27/02

    CPC分类号： B22D11/122 ,  B22D11/115

    摘要： A method for the continuous production of cast steel strands which are 200 mm.times.200 mm or less in cross-section by a continuous casting process in which molten steel containing over 0.20% of carbon is fed into a casting mold with a lubricant through a submerged nozzle or in an open stream and continuously drawn out downwardly of the casting mold, which includes the steps of (a) electromagetically stirring the molten steel at a position within said casting mold by the application of a magnetic field induced by introducing into an electromagnetic coil an alternating current of a frequency (f) in the range of 1.5 to 15 and maintaining the magnetic flux density (gauss) in the range of 602 e.sup.-0.10f to 1844 e.sup.-0.12f at the center of the electromagnetic coil, and (b) electromagnetically stirring the molten steel at a position in the final solidifying zone, of the continuously cast strand, in which the shorter diameter of the molten steel pool is smaller than 1/2 the length of the shorter side of the cast strand, by the application of a magnetic field induced by introduing an alternating current into an electromagnetic coil and maintaining the magnetic flux density (gauss) in the range of 0.143.multidot.D.sup.2 +231 to 0.343.multidot.D.sup.2 +451 at the center of the electromagnetic coil, wherein D is the solidified shell thickness in millimeters of the continuously cast strand, the value of the D ranging from 20 to 90, thereby permitting the production of medium and high carbon killed steel billets, which are improved as to segregations, inclusions, surface quality, cold forgeability, and machinability, by a continuous casting process at low cost.

    摘要翻译： 通过连续铸造方法连续生产200mm×200mm以下的铸钢股线的方法，其中含有超过0.20％的碳的钢水通过浸没式喷嘴或润滑剂供入到铸模中， 在开放的流中并连续地向下拉出铸模，其包括以下步骤：（a）通过施加通过引入到电磁线圈中引起的磁场在电铸线圈内的位置电磁搅拌钢水，交替地 频率（f）的电流在1.5至15的范围内，并且将磁通密度（高斯）保持在电磁线圈中心的602e-0.10f至1844e-0.12f的范围内，（b） 在连续铸造线材的最终凝固区域的位置电磁搅拌钢水，其中钢水池的较短直径小于短钢管的短边的1/2的长度 通过施加通过将交流电流引入到电磁线圈中并且将磁通密度（高斯）保持在电磁线圈的中心处的0.143×D 2 + 231至0.343×D 2 + 451的范围内的磁场， 其中D是连续铸造线材的以毫米为单位的凝固壳厚度，D的值在20至90之间，从而允许生产中高碳处理钢坯料，其分散，夹杂物，表面 质量，冷锻和可加工性，通过连续铸造工艺以低成本。

    Method for the continuous production of cast steel strands
    7.
    发明授权
    Method for the continuous production of cast steel strands 失效
    铸钢丝连续生产方法

    公开(公告)号：US4637453A

    公开(公告)日：1987-01-20

    申请号：US642659

    申请日：1984-08-21

    申请人： Kenzo Ayata ,  Kiichi Narita ,  Takasuke Mori ,  Takahiko Fujimoto

    发明人： Kenzo Ayata ,  Kiichi Narita ,  Takasuke Mori ,  Takahiko Fujimoto

    IPC分类号： B22D11/00 ,  B22D11/04 ,  B22D11/115 ,  B22D11/12 ,  B22D27/02 ,  B22D11/16

    CPC分类号： B22D11/122 ,  B22D11/115

    摘要： A method for the continuous production of cast steel strands which are 200 mm.times.200 mm or less in cross-section by a continuous casting process in which molten steel containing 0.20% or less of carbon is fed into a casting mold with a lubricant through a submerged nozzle or in an open stream and continuously drawn out downwardly of the casting mold. The method includes the steps of (a) electromagnetically stirring the molten steel at a position within said casting mold by the application of a magnetic field induced by introducing into an electromagnetic coil an alternating current of a frequency (f) in the range of 1.5 to 15 hertz and maintaining the magnetic flux density (Gaub) in the range of 602e.sup.-0.10f to 2441e.sup.-0.11f at the center of the electromagnetic coil, and (b) electromagnetically stirring the molten steel at a position in the final solidifying zone, of said continuously cast strand, in which the shorter diameter of the molten steel pool is smaller than 1/2 the length of the shorter side of the cast strand, by the application of a magnetic field induced by introducing an alternating current into an electromagnetic coil and maintaining the magnetic flux density (Gaub) in the range of 0.2.multidot.D.sup.2 +280 to 0.343.multidot.D.sup.2 +451 at the center of the electromagnetic coil, wherein D is the solidified shell thickness in millimeters of said continuously cast strand, the value of D ranging from 20 to 90. The method thereby permits the production of low carbon killed steel billets which are improved as to negative segregations, center cavities, inclusions, surface quality, cold forgeability, and machinability, by a continuous casting process at low cost.

    摘要翻译： 通过连续铸造方法连续生产200mm×200mm以下的铸钢股线的方法，其中含有0.20％以下碳的钢水通过浸没喷嘴通过润滑剂进料到铸模中 或在开放的流中并连续地从铸模的下方拉出。 该方法包括以下步骤：（a）通过施加通过将电磁线圈引入的频率（f）在1.5至1.5的范围内的电流施加的磁场，在所述铸模内的位置处电磁搅拌钢水 15赫兹，并且在电磁线圈的中心处保持在602e-0.10f至2441e-0.11f范围内的磁通密度（Gaub），和（b）在最终凝固区的位置电磁搅拌钢水， 通过施加通过将交流电引入电磁线圈而引起的磁场，其中钢水池的较短直径小于铸线的短边的长度的1/2的所述连续铸造股线 并且在电磁线圈的中心处将磁通密度（Gaub）保持在0.2×D2 + 280〜0.343×D2 + 451的范围内，其中D是所述连续的以毫米为单位的凝固壳厚度 这种方法由此允许生产低负荷偏析，中心腔，夹杂物，表面质量，冷锻和可加工性的低碳杀死钢坯，由 连续铸造工艺成本低。

    Continuous steel casting process
    9.
    发明授权
    Continuous steel casting process 失效
    连续铸钢工艺

    公开(公告)号：US4515203A

    公开(公告)日：1985-05-07

    申请号：US561149

    申请日：1983-12-14

    申请人： Kiichi Narita ,  Takasuke Mori ,  Kenzo Ayata

    发明人： Kiichi Narita ,  Takasuke Mori ,  Kenzo Ayata

    IPC分类号： B22D11/00 ,  B22D11/04 ,  B22D11/115 ,  B22D11/12 ,  B22D27/02

    CPC分类号： B22D11/122 ,  B22D11/115

    摘要： A continuous steel casting process adapted to produce steel castings of satisfactory quality with less center segregations is described. A molten steel is electromagnetically stirred in at least two of three locations, viz., a casting mold and intermediate and final solidifying zones of a continuously cast strand. In the casting mold, is applied a magnetic field induced by alternate current of a frequency f=1.5.about.10 Hz and having G in the range of 195.times.e.sup.-0.18f .about.1790.times.e.sup.-0.2f at the inner surface of the casting mold. The intermediate solidifying zone employs a magnetic field induced by alternate current of a frequency f=1.5.about.10 Hz and having a magnetic flux density G in the range of 195.times.e.sup.-0.18f .about.1790.times.e.sup.-0.2f at the surface of the strand or a magnetic field induced by alternate current of a frequency f=50.about.60 Hz and having a magnetic flux density G in the range of 0.6.times.10.sup.6 /(D-107).sup.2 .about.1.8.times.10.sup.6 /(D-100).sup.2 (in which D=the thickness of a solidified shell layer of the strand) at the surface of the strand. For electromagnetic stirring in the final solidifying zone, a magnetic field induced by alternate current of a frequency f=1.5.about.10 Hz and having a magnetic flux density in the range of 895.times.e.sup.-0.2f .about.2137.times.e.sup.-0.2f is applied.

    摘要翻译： 描述了一种连续铸钢工艺，适用于生产具有较少中心偏析的满意质量的钢铸件。 在三个位置中的至少两个，即铸模和连续铸造股线的中间和最终固化区域中的钢铁中进行电磁搅拌。 在铸模中，在铸模的内表面施加由频率f = 1.5DIFFERENCE 10Hz的交流电流感应的磁场，并且具有在195xe-0.18f DIFFERENCE 1790xe-0.2f范围内的G。 中间凝固区采用由频率f = 1.5DIFFERENCE 10Hz的交流电流感应的磁场，并且具有在线束表面处的195xe-0.18f DIFFERENCE 1790xe-0.2f范围内的磁通密度G或磁 频率f = 50差60Hz，磁通密度G在0.6×10 6 /（D-107）2范围内的交变电流引起的磁场差异1.8×106 /（D-100）2（其中D = 在该股线的表面处的股线的固化壳层的厚度）。 对于最终凝固区域中的电磁搅拌，施加由频率f = 1.5DIFFERENCE 10Hz的交流电流引起的磁通密度在895xe-0.2f差异2137xe-0.2f范围内的磁场。

    Method for treating molten steel and apparatus therefor
    10.
    发明授权
    Method for treating molten steel and apparatus therefor 失效
    钢水处理方法及其设备

    公开(公告)号：US4298376A

    公开(公告)日：1981-11-03

    申请号：US139655

    申请日：1980-04-14

    申请人： Kiichi Narita ,  Takasuke Mori ,  Kenzo Ayata ,  Takehisa Makino

    发明人： Kiichi Narita ,  Takasuke Mori ,  Kenzo Ayata ,  Takehisa Makino

    IPC分类号： C21C7/10

    CPC分类号： C21C7/10

    摘要： A method for treating molten steel utilizing an induction coil, a ladle, a treating vessel and at least one passage pipe interconnecting the ladle and the treating vessel which includes the steps of lifting up a part of the molten steel from the ladle to the treating vessel disposed over the ladle through adjustment of molten steel composition and/or degassing in the treating vessel, thereafter returning the molten steel to the ladle through the at least one passage pipe, circulating or reciprocating the molten steel between the ladle and the treating vessel while heating the molten steel by the induction coil disposed around the at least one passage pipe and operating the linear motor at a frequency of 50 to 60 cycles.

    摘要翻译： 一种利用感应线圈，钢包，处理容器和连接钢包和处理容器的至少一个通道管来处理钢水的方法，包括将钢水的一部分从钢包提升到处理容器的步骤 通过调整钢水组合物和/或处理容器中的脱气而放置在钢包上方，然后通过至少一个通道管将钢水返回到钢包中，使钢水在处理容器之间循环或往复运动，同时加热 所述钢水通过所述感应线圈设置在所述至少一个通道管周围，并以50至60个循环的频率操作所述线性电动机。