SU778913A1 - Tray for trough ingot moulds - Google Patents

Description

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The invention relates to the field of ferrous metallurgy and can be used when casting metal in a steelmaker. and foundries.

Pallets with protrusions in the 5th place of installation of the mold are known, which makes it difficult to assemble the floor casting and subsequent stripping. The design of the pallet requires strict cross-sectional dimensions of the molds to the dimensions of the pallet 1.

Also known mold with a protrusion in the Central part of the bottom 2.

An ingot cast in a known mold is obtained without a cubicle, with a 15 recess in the bottom part. According to the conditions of deformation on the universal slinging (the presence of rib passes, etc.), this form of the bottom part of the ingot does not only help to reduce the 20 bottom trimming, but leads to its increase by 1.5–2 times in comparison with the nominal ingots.

The purpose of the invention is to reduce the bottom edge and improve the quality of the surface of the bottom part of the ingot.

The goal is achieved by the fact that a spherical protrusion in the sides of narrow faces transforms into a wave-like surface of the depression-projection-depression with the corresponding

wearing their radii to the height of the ingot, respectively (0.02-0.04), (0.010, 03) and (0.04-0.045), while the depth of the depression nearest to the spherical tip is 3-5% of the height of the ingot, and the last depressions 1-2.5%.

FIG. 1 shows a pallet, a general sectional view; in fig. 2 - the same, top view.

The pallet 1 contains depressions 2, 3, a cylindrical protrusion 4, a spherical protrusion 5.

The height of the spherical and cylindrical protrusions is established taking into account the stress-strain state in the bottom part of the roll in the process of ingot rolling.

The depth of the trough 3 of the trench hole should be equal to 3.0-5.0% of the ingot height, and the depth of the trough 2- (O, 3-0.5) of the height of the depth of 3. The radius of the spherical protrusion R is 0.8-1 , 0 is the width of the cubicle hole B, which is determined by taking into account the thickness of the ingot and is equal to 0.4-0.6 of the last, and the radius of the cylindrical projections r is equal to. (0.5-0.6) depths of the maximum depression of the 3 wells well. The distance between the symmetrically arranged cylindrical protrusions (E) should be 0.7-0.8

Claims (1)

Claim A pallet for through ingot molds, having a kumpel hole with a spherical one with a protrusion in its central part, characterized in that, in order to reduce the bottom edge and improve the quality of the surface of the bottom part of the screen, the spherical protrusion in the-side of narrow faces passes into a wavy surface of the cavity -the protrusion-depression with the ratio of their radii to the height of the mold respectively (0.02-0.04), (0.01-0.03) and (0.04-0.045), while the depth of the proximal 15 to the spherical protrusion of the cavity is 3-5% of the height of the mold;