公开(公告)号：US4901785A

公开(公告)日：1990-02-20

申请号：US224058

申请日：1988-07-25

申请人： Charles D. Dykes ,  Sabah S. Daniel ,  J. F. Barry Wood

发明人： Charles D. Dykes ,  Sabah S. Daniel ,  J. F. Barry Wood

IPC分类号： B22D11/06

CPC分类号： B22D11/0605 ,  B22D11/0677

摘要： In continuously casting molten metal into cast product by a twin-belt machine, it is desirable to achieve dramatic increases in speed (linear feet per minute) at which cast product exits the machine, particularly in installations where steel cast product is intended to feed a downstream regular rolling mill (as distinct from a planetary mill) operating in tandem with the twin-belt caster. Such high-speed casting produces product with a relatively thin shell and molten interior, and the shell tends to bulge outwardly due to metallostatic head pressure of the molten center. A number of cooperative features enable high-speed, twin-belt casting: (1) Each casting belt is slidably supported adjacent to the caster exit pulley for bulge control and enhanced cooling of cast product. (2) Lateral skew steering of each belt provides an effective increase in moving mold length plus a continuity of heat transfer not obtained with prior art belt steering apparatus. (3) The exiting slab is contained and supported downstream from the casting machine to prevent bulging of the shell of the cast product, and (4) spray cooling is incorporated in the exit containment apparatus for secondary cooling of cast product.

公开(公告)号：US4813471A

公开(公告)日：1989-03-21

申请号：US190364

申请日：1988-05-05

申请人： Timothy D. Kaiser ,  Sabah S. Daniel ,  Charles D. Dykes

发明人： Timothy D. Kaiser ,  Sabah S. Daniel ,  Charles D. Dykes

IPC分类号： B22D11/06 ,  B22D11/18

CPC分类号： B22D11/0631 ,  B22D11/0605 ,  B22D11/182

摘要： A method for determining level of molten metal in the input of a continuous metal casting machine having at least one endless, flexible, revolving casting belt with a surface which engages the molten metal to be cast and a reverse, cooled surface along which is directed high velocity liquid coolant includes the steps of predetermining the desired range of positions of the molten metal pool and positioning at least seven heat-sensing transducers in bearing contact with the moving reverse belt surface and spaced in upstream-downstream relationship relative to belt travel spanning the desired pool levels. A predetermined temperature threshold is set, somewhat above coolant temperature and the output signals of the transducer sensors are scanned regarding their output signals indicative of temperatures of the moving reverse belt surface. Position of the molten pool is determined using temperature interpolation between any successive pair of upstream-downstream spaced sensors, which follows confirmation that two succeeding downstream sensors are at temperature levels exceeding threshold temperature. The method accordingly provides high resolution for determining pool position, and verifies the determined position by utilizing full-strength signals from two succeeding downstream sensors. In addition, dual sensors are used at each position spanning the desired range of molten metal pool levels to provide redundancy, wherein only the higher temperature of each pair of sensors at a station is utilized.

公开(公告)号：US4915270A

公开(公告)日：1990-04-10

申请号：US218689

申请日：1988-07-13

申请人： Sabah S. Daniel ,  Thomas R. Kleeb ,  Thomas W. Lewis ,  John F. McDermott ,  Mustafa R. Ozgu ,  Ralph C. Padfield ,  Donovan N. Rego ,  Achilles Vassilicos

发明人： Sabah S. Daniel ,  Thomas R. Kleeb ,  Thomas W. Lewis ,  John F. McDermott ,  Mustafa R. Ozgu ,  Ralph C. Padfield ,  Donovan N. Rego ,  Achilles Vassilicos

IPC分类号： B22D11/06

CPC分类号： B22D11/064

摘要： A feed system is provided for conveying molten metal to a thin section caster having mold surfaces moving exclusively in the direction of casting. The feed system has a passage of circular cross section adjacent to one end thereof for receiving molten metal and a rectangular cross section at the delivery end thereof adjacent to the caster. The feed system is designed for supplying molten metal to the caster at low pressure for "closed-pool" type caster operation. The point of highest elevation in the metal flow passage of the feed system is on the upper surface of a transition portion where the cross section changes from circular to rectangular adjacent to the nozzle. The level or height of the high point above the centerline of the nozzle exit is selected so as to be less than the pressure of the metal measured in inches at the nozzle exit. This feature enables the maintenance of positive pressure in the metal within the feed system so that ingress of air into the metal is prevented.

摘要翻译： 提供一种供料系统，用于将熔融金属输送到具有仅在铸造方向上移动的模具表面的薄壁铸造机。 进料系统具有邻近其一端的圆形横截面的通道，用于接收熔融金属，并且在其与输送机相邻的输送端处具有矩形横截面。 进料系统设计用于在“闭池式”连铸机操作的低压下向浇铸机供应熔融金属。 进料系统的金属流动通道中的最高高程点位于横截面从喷嘴附近的圆形到矩形的过渡部分的上表面上。 选择喷嘴出口中心线以上的高点的高度或高度，以便小于在喷嘴出口处以英寸测量的金属的压力。 该特征使得能够在进料系统内的金属中保持正压，从而防止空气进入金属。