JPH079546U - Dummy bar for continuous casting - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to provide a dummy bar for narrow width, which can cope with any change in the size of the mold, has a simple structure, and is inexpensive. [Structure] A narrow dummy bar having a width narrower than that of the wide dummy bar and having a projection for joining a slab at the tip and a locking portion for a sealing plate in a mold below the projection is integrally provided at the tip of the wide dummy bar. A wide and narrow width dual-purpose continuous casting dummy bar.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dummy bar for continuous casting.

[0002]

[Prior art]

 In the initial stage of continuous casting, the molten steel is held in the mold and partially solidified, and then the molten steel is sequentially solidified and sprinkled and cooled to cast a slab while pulling out the dame bar. . Various dummy bars, such as those disclosed in Japanese Utility Model Laid-Open No. 58-116147, Japanese Utility Model Laid-Open No. 58-137550 and Japanese Patent Laid-Open No. 60-221152, have been put into practical use as the dummy bars used in the initial stage of casting.

[0003]

[Problems to be solved by the device]

 However, these conventional dummy bars are ones in which strip-shaped plates are laminated, the steel receiving part is improved, and the cooling of the damy bar is improved, and the dummy bar is limited to a predetermined mold size. For this reason, when the mold size is significantly reduced by the variable mold width casting, the dummy bar must be changed, and there are problems such as equipping a large number of dummy bar sizes and complicating the dam bar change work. An object of the present invention is to provide a dummy bar having a high tolerance for the mold size, which is a drawback of the conventional dummy bar.

[0004]

[Means for Solving the Problems]

 FIG. 1 is a perspective view of a dummy bar for continuous casting according to the present invention, and FIG. 2 is a perspective view of the dummy bar of FIG. 1 mounted on a mold. In the figure, reference numeral 1 is a wide dummy bar. The wide dummy bar 1 is provided with a projection 2 for joining a cast piece at a tip thereof and a locking portion 5 for locking a seal plate 4 set in a mold 3 below the projection 2. The base portion 6 of the dummy bar block A formed and provided is fixed. In this dummy bar block A, a predetermined distance L is provided between the protrusion 2 and the engaging portion 5 and between the engaging portion 5 and the base end portion 6 of the tip portion.

[0005]

[Action]

 As shown in FIG. 2, the dummy bar block A thus constructed is attached to the front end of the wide dummy bar 1 when the size of the mold 3 becomes smaller than that of the wide dummy bar 1 in use. In this case, the tip of the dummy bar block A and the locking portion 5 that locks the seal plate 4 are inserted so as to be located in the mold 3. In this state, the seal plate 4 corresponding to the inner size of the mold 3 is attached to the locking portion 5 in the mold 3 through the opening 4a larger than the protrusion 2. This structure can be easily accommodated by changing the size of the seal plate 4 no matter how the size of the mold 3 is changed. After mounting the seal plate 4, the auxiliary seal plate 7, the coolant 8, and the protective cap 9 for the protrusion 2 are provided to complete the setting. In this state, molten steel is injected and solidified in the mold 3, and the wide dummy bar 1 is pulled out. The dummy bar block A is cut off from the slab by cutting the exposed distance L between the wide dummy bar 1 and the seal plate 4. Further, after the seal plate 4 is attached, the auxiliary seal plate 7, the coolant 8, and the protective cap 9 of the protrusion 2 may be of various types or shapes, and may be partially omitted.

[0006]

[Effect of device]

 By using the dummy bar of the present invention, it was possible to realize a dummy bar for narrow width which can cope with any change in the size of the mold, has a simple structure, and is inexpensive and practical.

[Brief description of drawings]

FIG. 1 is a perspective view of a dummy bar for continuous casting according to the present invention.

FIG. 2 is a perspective view of the dummy bar of FIG. 1 mounted on a mold.

[Explanation of symbols]

 1 Wide dummy bar 2 Protrusion 3 Mold 4 Seal plate 5 Locking part A Dummy bar block

Claims (1)

[Scope of utility model registration request] 1. A narrow dummy bar having a width narrower than that of the wide dummy bar and having a projection for joining a cast piece at the tip and a locking portion for a seal plate in a mold below the integral projection is integrated with the tip of the wide dummy bar. A dummy bar for continuous casting, which is provided on the.