RU1776487C - Fagoted metal pig - Google Patents

Abstract

Usage: in the foundry of non-ferrous metals. SUMMARY OF THE INVENTION: in a stackable metal ingot, the flat walls of the hole are made with a height-inclined angle of inclination, the value of which at a height from the larger base of the ingot, equal to the tolerances of the ingots, is less than the angle of inclination of the main part of the flat wall of the hole, and the total value of the angles of inclination of the flat wall holes, as well as the total angle of inclination of the conical wall of the hole and the side of the lower trapezium of the protrusion is not less than twice the value of the friction angle of the ingot material on the mold surface. 3 ill.

Description

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WITH

The invention relates to foundry of non-ferrous metals, in particular to the construction of stackable metal ingots.

The purpose of the invention is to increase the strength of a package of ingots.

In FIG. 1 shows a pig in section along the plane of symmetry; in FIG. 2 is a view of the ingot from the side of the smaller base; in FIG. 3 is a section AA in FIG. 2.

The stackable metal ingot 1 has a trapezoidal section. The length of the pig exceeds its two widths by 80-150 mm. Chushka Spit is made with a protrusion 2 and a hole 3. The protrusion 2 in cross section is made in the form of two isosceles trapezoid, the larger base of the upper of which is the smaller base of the lower, and the angle of inclination of the sides of the upper trapezoid is greater than the angle of inclination of the sides

lower trapezoid. The end surfaces of the protrusion are made conical. The protrusion is perpendicular to the axis of symmetry of the ingot; its length at the base is equal to the width of the smaller base of the ingot. .

Hole 3 is located along the axis of symmetry of the ingot. The smaller linear dimensions of the ingot hole correspond to the linear dimensions of the protrusion at the base. The flat walls of the hole are made with a variable angle to the plane of symmetry of the ingot. The thickness of the ingot section pc with a smaller angle of inclination of the flat walls t, located on the side of the larger base of the ingot, corresponds to the tolerance of the ingot thickness and, taking into account the permissible deviations of the location of the metal elements of the casting conveyor from 0.02 to 0.14, the minimum thickness of the ingot section of the min.

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whose flat walls are inclined to the longitudinal plane of symmetry of the ingot with a large angle y. The implementation of the flat walls of the hole with a variable angle of inclination makes it possible to reduce the change in the width of the ingot hole during casting of ingots with the minimum and maximum allowable thicknesses.

In order to ensure the extraction of ingots from the mold and to prevent jamming on the mold core, the sum of less than p and greater at the tilt angles of the flat walls of the hole should not be less than twice the friction angle of the ingot material on the mold surface "tr. those. + 2: 2 "tr. The angle of inclination of the conical sections of the hole remains constant over the entire thickness of the ingot and equal to a larger angle of inclination of its flat sections, and the sum of the angles of inclination of the conical section of the hole and the angle of inclination of the lateral surfaces of the lower trapezium of the protrusion to the plane of its symmetry should not exceed twice the friction angle: ( p + y) 2 atr. This will prevent jamming of the ingot in the areas of the mold forming the lateral surface of the lower trapezium of the protrusion and the conical sections of the opening of the ingot.

The process of forming a package of ingots is as follows.

Each row of the package consists of two pigs. The ingots are arranged in a row so that an adjacent ledge is adjacent to the opening of one ingot. The next row of ingots is rotated 90 °. In this case, each ingot of this series overlaps two ingots of the underlying row, and their holes are on the protrusions of the ingots of the lower row.

Due to the smaller deviation of the width of the holes, differing in mass of ingots, the relative rotation of the series of ingots is reduced and thereby the load on

strapping the package under the action of horizontal inertial loads increases it. strength and accuracy of overall dimensions. The package will be resistant to inertial loads even without

bindings. Tying is necessary for the bag to hold one bottom row of ingots during lifting and handling operations without using pads and grabbing the bag from the second bottom row.

Formula a and zo brete n i

A stackable metal ingot, having on a smaller base perpendicular to the axis of symmetry of the ingot, a protrusion in the form of lower and upper trapezoids, the angle of inclination of the sides of the upper of which is greater than the angle of inclination of the sides of the bottom, and a through hole extending along the smaller base towards the bottom axis

symmetry of ingots and having side flat walls and end conical walls, characterized in that, in order to increase the strength of the package of ingots, the flat walls of the hole are made with a variable angle of inclination in height, while at a height from the larger base of the ingot, equal to the value of the deviations heights of ingots, the angle of inclination is less, and the total value of the angles of inclination

the wall of the hole, as well as the total value of the angles of inclination of the conical wall from: the verst and the sides of the lower trapezium of the protrusion - not less than twice the friction angle of the ingot material.

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