Sms Concast, Inc.

Sms Schloemann-siemag Aktiengesellschaft

Donald P Lorento

Carl Langner

A wall of a four-piece mold is made by machining cooling channels into one side of a steel backup member. The cooling channels are filled with wax which is then covered with conductive paint or tape. A layer of copper is now electroplated onto the side of the backup member with the cooling channels, and nickel and chromium are plated over the copper in succession. Upon completion of plating, the wax is removed from the cooling channels by melting the wax. Alternatively to machining the cooling channels into the backup member, strips of plastic are adhesively secured to the backup member prior to plating. The plastic strips, which have widths and heights equal to the desired widths and depths of the cooling channels, are placed on the backup member at the intended locations of the cooling channels. Copper is plated onto the backup member to the height of the strips which are then removed to form the cooling channels. The cooling channels are filled with wax and the process of making the mold wall is then completed as before.

Method of making a continuous casting mold

A wall of a mold assembly for the continuous casting of steel has a steel back-up plate. A thermally conductive plate composed of copper or a copper alloy is bolted to the back-up plate and a relatively thin copper or copper alloy facing is soldered to that surface of the thermally conductive plate which faces away from the back-up plate. The thermally conductive plate may be omitted and the facing soldered to the back-up plate. The facing contacts and cools a continuously cast strand travelling through the mold. When the facing becomes cracked or worn beyond repair, the solder joint is melted to remove the facing and a fresh facing is soldered to the thermally conductive plate or back-up plate.

Mold for continuous casting and method of making the mold

A continuous casting apparatus has a continuous casting mold which defines a casting passage. The walls of the mold are provided with conduits which are connected with a source of pressurized gas and open into the casting passage at locations downstream of that where the meniscus is normally established. During withdrawal of a continuously cast strand from the mold, gas is injected into the casting passage at a pressure sufficient to force the meniscus away from the walls of the mold. This eliminates the friction which normally exists between the mold and the meniscus so that the mold need not be oscillated during strand withdrawal. The continuous casting apparatus accordingly does not require an oscillating mechanism for the mold.

Continuous casting method and apparatus

A mold for the continuous casting of beam blanks has a central casting passage bounded by a pair of parallel walls. On either side of the central casting passage is an expanding casting passage which widens in a direction away from the central casting passage and is bounded by a pair of inclined walls diverging from respective ones of the walls of the central casting passage. A terminal casting passage bounded by a pair of side walls parallel to the walls of the central casting passage is located outwardly adjacent to each expanding casting passage. The various casting passages cooperate to define a dogbone-shaped mold cavity. The inclined walls have an angle of inclination no smaller than arc tangent (y/z) where y is the distance from a point on an inclined wall to a transverse center line of the transverse cross section of the mold and z is the distance from such point to a longitudinal center line of the transverse cross section of the mold.

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Exeter, Canada

Donald P Lorento