SU1168326A1 - Horizontal-type steel continuous caster - Google Patents

Abstract

INSTALLATION OF CONTINUOUS STANDING OF A STEEL OF HORIZONTAL TYPE, containing a metal reservoir, a mold with its swing drive and a secondary cooling zone with roller wiring, characterized in that, in order to improve the quality of the ingot and ensure the stability of the process, the mold is made of inlet and outlet parts with a vertical connector. the input part has a length of 0.1-0.4 of the length of the mold and is connected to the swing drive, and the installation is equipped with metal tapes installed to vosodnoy movement along the walls of the mold and the wiring roller. O) 00 oe yu

Description

The invention relates to metallurgy in the field of foundry, in particular, the design of horizontal continuous casting plants. The purpose of the invention is to improve the quality of the ingot and ensure the stability of the process. The drawing shows the scheme of the proposed installation in cross section along an axial plane. The metal receiver 1 of the proposed installation is made, like other well-known metal receivers of horizontal casting steel, in the form of a lining container with a cavity, a lid on top, and with an outlet for supplying metal to the mold using a casting pipe 2 installed in the outlet of the metal receiver 1. The crystallizer of the installation is made of the inlet part 3 and the outlet part 4. Each of these parts is made detachable from the chaff of the plates forming the walls of the crista Allyator The entrance 3 of the mold is similar in construction to the molds of existing installations: its working walls are formed by water-cooled copper plates. This allows steel to be cast at the proposed facility using known methods of connecting a horizontal crystallizer with a metal receiver. For this, the inlet part of the crystallizer 3 is sealed with a sealing element 5 from a heat-resistant refractory in which the end of the casting tube 2 is tightly fixed. rough blanks of the crust of the workpiece, the inlet part 3 of the mold is connected to the rocking drive 6. Since this part is connected to the metal receiver 1 of the pipe oh 2, then as a drive 6 it is advisable to use a high-frequency oscillator that communicates part 3 of the oscillation with a very small amplitude, or part 3 is connected to the actuator 6 by means of a unit in which it is rigidly fixed together with the metal j by receiver 1 and performs with him hesitate. The output part 4 of the mold differs in construction from the input part 3 in that the working surface of its walls is formed by metal tapes installed with the possibility of moving along the walls of this part of the mold to prevent the workpiece from rubbing against these walls. Since in a horizontal mold friction occurs more strongly on its lower wall, it is especially important to supply the bottom wall of the exit part 4 with a metal tape. Therefore, only the metal tape 7 is shown adjacent to the bottom wall of the exit part 4. Similarly, metal tapes adjacent to other can be installed the walls of this part of the mold, two side and top. The end sides of the plates should be carried out radially curved for better adhesion to the roller 8. The metal tapes 7 are mounted so that they can be moved along the walls of the output part 4, and by roller wiring 9. The tapes are moved with the help of coilers 10. During installation operation, liquid the metal first comes from the metal receiver 1 through the casting pipe 2 into the inlet part 3 of the mold, which is closed with a seed before the start of casting. Upon contact of the liquid metal with the walls of the inlet part 3, a crust (metal) of the billet instantly forms, which rapidly increases in thickness, which makes it possible to stretch the billet from the inlet part 3 without crust disruption even with considerable friction between the billet and the walls of this part of the crystallizer. This is also facilitated by the communication of the inlet part 3 of the oscillations by means of a swing drive 6 connected to it and also the fulfillment of the inlet part 3 of a small length equal to 0.1-0.4 of the mold length, which makes it possible to reduce the force pushing out the workpiece and, accordingly, to relax the stress in the crust . However,

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This reduction in the length of the inlet part to less than O, 1 of the mold length does not provide a crust that is thick enough to resist breaking when the preform is pulled from the inlet part 3 of the mold. And the implementation of the inlet part 3 with a length of more than 0.4 of the length of the mold does not allow to reduce friction by the workpiece and the mold due to the use of metal tapes. When posting into the cavity of the outlet part 4 of the mold, the workpiece contacts at least with the metal tape 7 forming the working surface of the lower wall, although it is preferable to provide all the walls of the exit part 4 with such tapes.

This significantly reduces the friction between the workpiece and the mold.

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and increases the resistance of the crust of the workpiece. Since the metal tapes 7 move along with the workpiece and on roller wiring, this also makes it possible to eliminate the sharp thermal shock characteristic of the beginning of the secondary cooling zone.

The proposed plant for the continuous casting of the horizontal type has technical advantages in comparison with the known one, consisting in the fact that it provides a significant reduction in the friction between the workpiece and the mold, especially in its lower part. This allows you to reduce the stretching force and reduce the damage to the workpiece.

cracks that ensures the quality of the blanks.

Claims (1)

INSTALLATION OF CONTINUOUS CASTING OF STEEL HORIZONTAL TYPE, containing a metal receiver, a mold with a swing drive and a secondary cooling zone with roller wiring, characterized in that, in order to improve the quality of the ingot and ensure process stability, the mold is made of inlet and outlet parts with a vertical connector the plane, while the input part has a length of 0.1-0.4 lengths of the mold and is connected to the swing drive, and the charters are equipped with metal tapes that can be moved joints on the walls of the outlet part of the mold and roller wiring. ₌ ABOUT SU, ... 1168326 I 168326