SU969438A1 - Intermediate apparatus - Google Patents

Description

() INTERMEDIATE DEVICE

one

This invention relates to ferrous metallurgy, more specifically to the casting of steel into ingots.

A box-type intermediate device is known that is lined from the inside with refractory material and has a support ring by which it is mounted on a mold tl.

As a result of strong spatter formation when the metal is poured into the mold through an intermediate device, a crust in the form of a skull of frozen droplets of liquid metal and slag forms on its inner walls. Removal of the skull is done manually with a crowbar. The process is laborious and is accompanied by partial destruction of the lining, which must then be repaired.

At the same time

there is a flow of metal through

mold edge as well as control

filling the molds with metal

This is done visually and it is not always possible to accurately calculate the required volume of metal in the device at the end of pouring before closing the locking device of the bucket, sufficient for normal filling of the mold. In some cases, the stopper does not cover and the mold overflows with metal. As a result of metal overflows, the support ring of the device is welded to the ingot and mold. During repairs, the support ring and all excess metal are cut from the mold, and a new ring is welded to the device.

Claims (4)

 The purpose of the invention is to reduce the working time for preparatory and repair work. This goal is achieved by the fact that in the intermediate device containing the casing and supporting ring lined with refractory material, the casing walls are pivotally connected to the bottom part, and in the supporting ring evenly around its circumference are drilled pins. Eyelets with clips are made in the upper corners, in the bottom part and on the side walls they are made blank, and the stop pins are secured in the support ring with cotter pins. Fig. 1 shows the device in section; in fig. 2 is a view along arrow A in FIG. one;. in fig. 3 is a view along arrow B in FIG. one; in fig. A - UI I in FIG. 1. The device consists of side walls 1, hinged to the bottom part 2 by the hinges 3 and has a support ring k. The lugs 5 are installed in the upper corners of the side walls, in which clamps 6 of any currently known construction (for example, screw or wedge, etc.) are installed, and the lugs are installed Parallel to the diagonal of the device cross section (Fig. 2), their location allows the walls to be most effectively collapsed with each other. Inside the device, after the metal has been poured, a skull 7 is formed. In the bottom part and side walls, ledges 8 are made, which, when closed together, form locks preventing the metal from leaking out of the device. Three holes are made in the support ring evenly around its circumference, into which thrust pins 9 are installed. The pins are secured in a corner from the pins 10. The device works as follows. After pouring the metal, the device is removed from the mold. The walls 1 are opened, for which the lugs 5 are released and the clamps 6 are disconnected, while the skull 7 remains on the bottom part of the device and is then easily removed. Refractory paste is placed in the ledge 8. The side walls 1 are closed and are wound off with clips 6. The excess padts are removed and the device after preheating is used for its intended purpose. If in the process of producing ingots, metal overflow is allowed over the edge of the mold, then the excess metal will go into the gap between the mold and support ring A, only the thrust pins 9 will be welded to the mold, and the support ring will remain free. In this case, the linch pins 10 are removed and the device is removed with a crane, and the welded pins 9 and the excess metal are removed by gas cutting. Three new pins are inserted into the backup ring, secured with split pins, and the device is ready for use. When using the proposed device, the cost of repairing the intermediate device is reduced by maintaining the support ring, the lining service life is increased by eliminating the destruction of the lining when removing the skull, the process of lining the device is simplified due to the conical funnel, i.e. the walls are rectangular and lining each separately and no skull removal is required after each cast, the wear of the lining is reduced, it is protected by the skull of the previous fill. Claim 1. Intermediate device comprising a casing and a support ring lined with refractory material, characterized in that, in order to reduce the working time for preparatory and repair work, the casing walls are pivotally connected to the bottom part and uniformly in the support ring holes are made in which the thrust pins are installed. 2. The device according to claim 1, which is designed for the fact that, in order to better shake the walls, eyelets with clips are made in the upper corners. 3. The device according to claim 1, characterized in that, in order to avoid leakage of metal, in the bottom part and on the walls are made 4. The device according to claim 1, p tl is due to the fact that, for the purpose of the quick connector, the thrust pins are secured in the support ring with cotter pins. Sources of information taken into account in the examination 1. Drawing NIIT Zhmasha, № 72, 70.980. fpae.3 qjueM