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    Process for producing free-machining steel
    61.
    发明授权
    Process for producing free-machining steel 失效
    生产自由加工钢的工艺

    公开(公告)号：US4238230A

    公开(公告)日：1980-12-09

    申请号：US946698

    申请日：1978-09-28

    Applicant: John H. Bucher ,  Eugene J. Paliwoda ,  Frank E. Rote

    Inventor： John H. Bucher ,  Eugene J. Paliwoda ,  Frank E. Rote

    IPC: B21B1/02 ,  B22D11/12 ,  C22C38/60 ,  B22D11/00

    CPC classification number: C22C38/60 ,  B21B1/026 ,  B22D11/1206

    Abstract: A process or method used to produce a free-machining, high sulfur steel alloy is accomplished by continuously casting the molten metal rather than ingot casting and processing in a blooming mill. The process begins with a molten alloy having a high sulfur content (0.40-0.65%). The molten metal is poured from the ladle into the tundish of the continuous casting machine. From there, the molten metal is fed into an oscillating mold having the desired cross section. As the molten metal passes through the mold it is cooled to form a solidified metal body. Finally, the metal body is withdrawn and cut into the desired lengths. Additional measures may be incorporated into the process to improve the machinability and surface characteristics. They include feeding aluminum wire into the mold, protecting the casting stream from the atmosphere, and using a slide gate ladle pouring system.

    Abstract translation: 用于生产自由加工的高硫钢合金的方法或方法是通过连续铸造熔融金属而不是在喷砂机中铸锭和加工来实现的。 该方法从具有高硫含量（0.40-0.65％）的熔融合金开始。 将熔融金属从钢包倒入连铸机的中间包中。 从那里，将熔融金属送入具有所需横截面的摆动模具中。 当熔融金属通过模具时，其被冷却以形成凝固的金属体。 最后，将金属体取出并切割成所需的长度。 可以在该过程中引入附加措施以改善机械加工性和表面特性。 它们包括将铝线馈入模具中，保护铸造流从大气中，并使用滑动浇道浇包系统。

    Apparatus for manufacturing stretch-formed products of high-melting metals
    63.
    发明授权
    Apparatus for manufacturing stretch-formed products of high-melting metals 失效
    用于制造高熔点金属成型产品的装置

    公开(公告)号：US3650314A

    公开(公告)日：1972-03-21

    申请号：US3650314D

    申请日：1969-11-19

    Applicant: BOHLER & CO AG FA GEB

    Inventor： TARMANN BRUNO ,  VONBANK HEINRICH

    IPC: B21B1/46 ,  B21B31/32 ,  B22D11/12

    CPC classification number: B21B1/46 ,  B21B31/32 ,  B22D11/1206

    Abstract: An apparatus for the manufacture of strands of molten metal, in particular nonalloyed and alloyed steels, by continuous casting, comprising a mold for continuously casting a strand and means for simultaneously withdrawing the cast strand from the mold. The cast strand which exits from the mold is in a partially solidified state and has a molten core. The withdrawing means comprise a pair of spaced grooved rollers which define a box-pass therebetween. The bottom of the groove of each roller includes a convexedly curved portion, the camber of convexity of which amounts to 10-25 percent of the height of the box-pass. Pressure producing means are operatively connected to the pair of grooved rollers. This pressure producing means being selectively variable in applying pressure at ratios ranging from 1:4 to 1:8.

    Abstract translation: 用于通过连续铸造制造熔融金属线材，特别是非合金和合金钢的装置，包括用于连续铸造线材的模具和用于同时从模具中取出铸造线材的装置。 从模具出来的铸造线材处于部分固化状态并具有熔融铁芯。 抽出装置包括一对间隔开的沟槽辊，它们在它们之间限定一个箱形通道。 每个滚子的凹槽的底部包括凸起的弯曲部分，其凸度的外倾角相当于箱形通道高度的10-25％。 压力产生装置可操作地连接到一对带槽辊。 该压力产生装置在以1:4至1:8的比率施加压力时可选择地变化。

    Method and device for a combined continuous casting and rolling system
    66.
    发明授权
    Method and device for a combined continuous casting and rolling system 有权

    公开(公告)号：US09796006B2

    公开(公告)日：2017-10-24

    申请号：US14420395

    申请日：2013-07-04

    Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

    Inventor： Thomas Lengauer ,  Wolfgang Peitl ,  Roman Winkler

    IPC: B22D11/12 ,  B22D11/126 ,  B21B1/46 ,  B22D11/14 ,  B21B15/00

    CPC classification number: B21B1/463 ,  B21B2015/0014 ,  B22D11/1206 ,  B22D11/126 ,  B22D11/14

    Abstract: A method and device for producing hot-rolled products in a combined continuous casting and rolling system includes a device for separating and removing. In order to overcome a disruption in production in a part of the system located downstream of the device for separating and removing, the method includes: (a) separating the endlessly produced precursor material into a strand portion with shears; (b) clamping the strand portion; (c) raising the trailing part of the strand portion from the roller table by a raising device, so that the strand portion is drawn away from the shears in the direction of transport; (d) cutting the precursor material into a precursor material portion with the shears; (e) removing the precursor material portion from the roller table, and removing the strand portion until the combined continuous casting and rolling system is ready to operate again.

    Continuous casting equipment
    68.
    发明授权
    Continuous casting equipment 有权

    公开(公告)号：US09782824B2

    公开(公告)日：2017-10-10

    申请号：US14766041

    申请日：2014-04-28

    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

    Inventor： Shuntaro Imai ,  Yasuo Maruki ,  Daisuke Miki ,  Hiroaki Uchiyama

    IPC: B21B1/46 ,  B22D11/12 ,  B22D11/128 ,  B21B27/02 ,  B21B13/22

    CPC classification number: B22D11/12 ,  B21B1/46 ,  B21B13/22 ,  B21B27/021 ,  B22D11/1206 ,  B22D11/1282 ,  B22D11/1287

    Abstract: Continuous casting equipment includes a casting product reduction apparatus and a casting product drawing apparatus, the casting product reduction apparatus including a pair of casting product reduction rolls that sandwich and apply pressure to a casting product and being configured to apply reduction to the casting product, the casting product drawing apparatus being provided in a following stage of the casting product reduction apparatus and configured to sandwich and draw the casting product with a pair of casting product drawing rolls. At least one of the pair of casting product reduction rolls includes a large-diameter part that projects radially outward in an axial-direction center region and applies pressure to a width-direction center region of the casting product. The casting product that is subjected to reduction by the casting product reduction apparatus has a depressed part corresponding to the large-diameter part. At least one of the pair of casting product drawing rolls of the casting product drawing apparatus includes a depressed part supporting part that contacts with and supports the depressed part, and is driven by a driving mechanism. An axial-direction length L2 of the depressed part supporting part and an axial-direction length L1 of the large-diameter part of the casting product reduction roll satisfy 0.5×L1≦L2

    SECTOR-SHAPED SECTION OF CONTINUOUS CASTING MACHINE FOR HEAVY REDUCTION OF SOLIDIFIED TERMINAL OF CONTINUOUSLY CAST SLAB AND HEAVY REDUCTION METHOD THEREOF
    69.
    发明申请
    SECTOR-SHAPED SECTION OF CONTINUOUS CASTING MACHINE FOR HEAVY REDUCTION OF SOLIDIFIED TERMINAL OF CONTINUOUSLY CAST SLAB AND HEAVY REDUCTION METHOD THEREOF 审中-公开

    公开(公告)号：US20170113266A1

    公开(公告)日：2017-04-27

    申请号：US15401325

    申请日：2017-01-09

    Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

    Inventor： Yonglin Kang ,  Xinhua Wang ,  Guoming Zhu ,  Han Ma ,  Jianchao Ma ,  Jinbo Qu ,  Hang Yu ,  Zhijun Zhang ,  Min Jiang ,  Zhigang Xu

    IPC: B22D11/12

    CPC classification number: B22D11/12 ,  B22D11/1206

    Abstract: The present invention provides a sector-shaped section of a continuous casting machine for heavy reduction of a solidified terminal of a continuously cast slab and a heavy reduction method. The sector-shaped section of a continuous casting machine comprises an upper frame, a lower frame, an upper driving roller, a lower driving roller, a left driven roller set, a right driven roller set, a screw-down gear and clamping cylinders which are positioned on the sector-shaped section; the clamping cylinders are used for clamping the upper frame and the lower frame and keeping the upper frame and the lower frame at a set interval; the upper driving roller is connected with the screw-down gear; the upper driving roller is connected to the upper frame through a bearing base; the lower driving roller is connected to the lower frame through a bearing base; the left driven roller set and the right driven roller set, are respectively positioned on two sides of the driving rollers; the left driven roller set is used for clamping the cast slab before reduction; the right driven roller set is used for clamping the cast slab after reduction; and the diameter ratio of the driving rollers to the driven rollers is 1.1:1-2:1. The deformation permeability of the present invention is increased, equivalent to the deformation of one rolling pass of a two-roller mill with a relatively large roller diameter, which facilitates improvement on the looseness and segregation of the center area of the continuously cast slab.

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