SU910323A1 - Ingot mould for casting metal - Google Patents

Description

one

The invention relates to the field of metallurgy and can be used when casting ingots into molds.

The known method of heat insulation of the approximate extensions of the mold and the device for its realization. During the pouring of the metal into the mold, the material that slows down thermal radiation is placed in an airtight shell and placed in a mold. The open end of the mold after pouring the metal cover.

It should be noted that the installation of a hermetic shell inside the mold is relatively time-consuming, it is possible the destruction of the shell and the ingress of impurities into the body of the ingot.

The closest technical solution to the proposed is a mold, which includes a removable screen in the form of a set of plates, installed with the possibility of covering the mold at 1/4 - 1/3 of its height, and the inner surface of the outer plate, facing the mold, is mirrored.

However, this, closing the metal mirror, does not allow controlling its crystallization and, if necessary, feeding the shrinkage shell.

ten

These disadvantages are eliminated by the proposed technical solution.

The aim of the invention is the possibility of controlling the crystallization of the ingot and the possible feeding of the shrinkage shell.

This goal is achieved by the fact that, in the mold, a metal casting comprising a body and a removable screen-Screen in the form of a set of plates with

Claims (2)

30, according to the invention, in the center of the plates there are holes and 1 screen-shield is equipped with a rod fixed on the plates with the possibility of rotation 39 in the horizontal plane and vertical movement, and hole plugs fixed on the rod, each plug is provided with a seal, and a shield additionally equipped with a reflector in the form of a spherical segment, mounted on the rod under the hole of the bottom plate. FIG. 1 shows the mold with a screen, cut; in fig. 2 and 3, node 1 in FIG. 1. The mold 1 for metal casting is equipped with a cover-screen in the form of a set of plates 2,3,4. Between them, the plates are fastened with elements 5. The inner plate is provided with a support ring 6, due to which the screen in the form of a set of plates rests on the end of a spoon 1. In FIG. Figure 2 shows a set of plates 2, 3, 4 in which holes are made that close the plug MI-7. The latter are fixed on the rod 8 and enter into the rings 9 with a groove, which is a sealing closure. Over- and under the plates 2,3,4 and locks 7 are filled with bushings 10, which increase the rigidity of the structure and close the holes in the plates through which the rod 8 passes. At the end of the rod 8 it is fixed with a nut 11 o. the segment, and the sleeve 13, fixed above the spherical segment, fixes the amount of lift of the entire closure device. The need to install a spherical segment is to reduce heatstroke on subsequent plugs in order to avoid heat leaks through the valve. The inner surface of the outer plate of the screen facing the mold is mirror-like, as in the prototype. The operation of the mold for casting metal is as follows. At the end of the mold 1 with the support ring 6 install the screen in the form of a set of plates 2,3,4, fastened among themselves by connecting elements 5. The rod 8, on which the plugs 7 are attached with bushings Yu, and the reflector 12 in the form of a spherical segment, fixed by a nut 1I , is moved axially to remove plugs 7 from rings 9 with a groove to a position where sleeve 13 resists in face 4 with 2, then it is rotated 100200 and is passed down along the axis until the lower part of plugs 7 comes in contact with the (upper) surfaces of plates 2 3.4. When the 6-hole in the screen is open, the mold is filled with metal. At the end of the casting, the rod 8 is moved upward along the axis, turned by 100-200 ° and moved downward so that the plugs 7 fall into the rings 9 with the groove. If necessary, feed liquid metal, backfill any material onto a metal mirror or perform studies, in particular probing, the lifting operation is repeated. After the ingot solidifies, the screens are removed from the mold 1 in the form of a set of plates 2,3,4 and then the ingot is stripped. The proposed molds can be recommended for use on ingots with a mass of 10 tons. For example, if earlier when the mass of the ingot was 50 tons, the amount of metal was up to 7 tons, then using the proposed mold with the ability to feed a shrinkage shell . The economic effect when casting carbon steel will be about 2 rubles. 1 ton fit compared to the prototype. Claim 1. The mold for metal casting I, comprising a housing and a removable crush-screen in the form of a set of plates, is made in such a way that, in order to control the crystallization of the ingot and feed the shrinkage shell, in the plates The holes are made in the center, and the Krishka screen is equipped with a rod fixed on the plates so that it can be rotated horizontally and vertically, and hole plugs fixed to the rod. 2. The priest pop. 1, that is, with each seal having a seal. 3. The companion under item 1, about tl l-h is the fact that the cover of the screen is provided with a reflector in the form of a spherical segment attached to the rod under the hole of the bottom plate. Sources of information taken into account in the examination of 910323 Cl 5 of Cl I. Patent CU1A No. 3929183, B 22 O 7/10, 1975. 2. USSR Copyright Certificate No. 2798163 / 22-02, B 22 D 7/10, 1979.