RU207586U1 - DEVICE FOR FORMING THE CUMPEL PART OF A CYLINDRICAL INGOT - Google Patents

Abstract

The utility model relates to the field of casting steels and alloys and can be used to manufacture consumable electrodes for subsequent remelting. The device for forming the tamper part of a cylindrical ingot is made of a corundum-based refractory material and contains a lower (2) and an upper part. The lower part in the form of a truncated cone follows the contour of the bottom part (3, 4) of the cylindrical mold. The upper part contains a recess (5) in the form of a truncated cone, which provides damping of metal spatter at the initial moment of casting, and is configured to form a plane (6) in the barrel part of the cylindrical ingot for welding the inventory head without trimming the bottom part of the cylindrical ingot. A complete rejection of the bottom trimming of ingots poured from the top, easy ingot separation, an increase in the durability of cylindrical molds and pallets is ensured. 4 ill.

Description

The utility model relates to the field of technology, namely to casting steels and alloys from above, and can be used in the shops of metallurgical plants for casting consumable electrodes for subsequent vacuum arc remelting (hereinafter VAR) or electroslag remelting (hereinafter ESR) to form a pummel plane for welding the inventory head, as well as to protect the walls of the molds from erosion by extinguishing metal spatter at the initial moment of casting.

Known is a device for pouring metal from above, containing a casting mold, a casting pipe lowered to the entire height of the mold and having a funnel-shaped upper part, a reflector attached to the lower end of the pipe with a gap relative to its walls, and a movement mechanism (see ed. Certificate RU No. 2022688 C2, class B22D 7/12, publ. 1994).

The disadvantage of the known device is the impossibility of its use when casting from above on vacuum induction furnaces, while some alloys are melted along the chain vacuum induction furnace - VAR or ESR.

Known flange plug for a mold, containing the lower part in the form of a truncated cone, and the upper part, on which concentric and radial protrusions of equal height are made. The protrusions are made with thinning, and the number of concentric protrusions is 1-3, and the number of radial protrusions is 4-8 (see ed. Certificate RU No. 1588490 A1, class B22D 7/12, publ. 1990).

The disadvantage of the known device is that this device, while protecting the walls of the molds from erosion, does not form a flat kyumpel plane for subsequent welding of the inventory head. Thus, to obtain a plane, it is necessary to produce additional bottom cuttings on the ingot.

The utility model is based on the task of improving the flange plug for the mold, containing the lower part in the form of a truncated cone, and the upper part, on which concentric and radial protrusions of equal height are made. The protrusions are made with thinning, and the number of concentric protrusions is 1-3, and the number of radial protrusions is 4-8.

The proposed device differs from the prototype in that it is made of a refractory material based on corundum and has a truncated cone-shaped recess on the upper part, which allows at the initial moment of casting to extinguish metal splashes, as well as to form the tip part of the ingot, ending in a plane that allows welded inventory to it. the head without trimming the bottom part, and it is also easy to separate the device from the ingot body.

The technical result of the proposed technical solution is a complete rejection of bottom trimming of ingots poured from above, intended for consumable electrodes for VAR and ESR, as well as an increase in the resistance of cylindrical molds and pallets, as well as the possibility of easy separation of the material of the device from the body of the ingot.

The proposed technical solution is illustrated by drawings, which show:

- fig. 1 - a device for forming a tamper part of a cylindrical ingot, vertical section;

- Fig. 2 is an external view of the upper and lower parts of the finished device;

- Fig. 3 is an external view of the device installed in the casting tray;

- Fig. 4 is an external view of the bottom of one of the ingots obtained after using the proposed device.

The device for forming the tamper part of a cylindrical ingot 1 for cylindrical molds is made of refractory material, has a lower part 2 in the form of a truncated cone, repeating the contour of the bottom of a cylindrical mold 3 (if it is deep-bottom, Fig.1b) or pallet 4 (Fig.1a ). The upper part has a recess in the form of a truncated cone 5, which allows at the initial moment of casting to extinguish metal spatter, as well as to form the tip of the ingot, ending in plane 6, allowing the inventory head to be welded to it without trimming the bottom part. Thus, the bottom trim of the ingots spilled is completely eliminated.

from above, intended for consumable electrodes for VAR and ESR, and also increases the resistance of cylindrical molds. The frusto-conical recess allows for easy separation of the device from the ingot body.

The proposed device has been tested at PJSC Ruspolymet. The appearance of the upper and lower parts of the finished device is shown in Fig. 2a and Fig. 2b, respectively. The external view of the device installed in the casting tray is shown in FIG. 3. Several ingots were cast using the proposed device. The appearance of the bottom of one of the ingots is shown in Fig. 4. Thus, the use of the proposed device made it possible to obtain a flat bottom part of the ingot and, without producing bottom trimmings, immediately weld the inventory head to it for subsequent remelting of the VAR. The durability of deep-bottom molds increased by 15-20 heats, and pallets increased by several times. At the time of filing the application, not a single pallet was out of order, since during casting it does not come into contact with the metal.

Claims (1)

A device for forming a tamper part of a cylindrical ingot, containing a lower part in the form of a truncated cone, repeating the contour of the bottom part of a cylindrical mold, and an upper part containing a recess in the form of a truncated cone, which provides damping of metal splashes at the initial moment of casting, characterized in that it is made of refractory material based on corundum, while the upper part is made with the possibility of forming a plane in the barrel part of the cylindrical ingot for welding the inventory head without trimming the bottom part of the cylindrical ingot.

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