SU58734A1 - Mill for direct rolling - Google Patents

Description

Already known are the mills for the implant-free rolling rollers, in which liquid metal is fed into the gap between the rollers by means of a conveyor chain, enveloping one roller and consisting of molds supported from the sides of the links.

The proposed invention of the mill is related to the same mills, but differs from them in a special design of the conveyor chain; the ends of the shapes of the latter are formed along cylindrical concave and convex surfaces. The convexities of one shape are included in the concavities of the adjacent shape. The side surfaces of the forms are provided with wedge lugs. The latter are included in the conical recesses of the chain links under the influence of the pressure rollers. Such a design of the forms ensures their tight fit at the points of deflection and bending of the chain and eliminates the possibility of the flow of liquid metal.

In FIG. 1 shows the front view of the mill; FIG. 2-view it in the plan; FIG. 3 side view of the mill; FIG. 4-part conveyor chain.

The proposed mill for impregnated rolling consists of two rolls 1 and 2

with a conveyor chain running between them, covering the lower roll. In the receiving part, the chain has sagging, which is necessary to create a cavity for pouring metal into it. This cavity must be sufficiently capacious to accommodate the required amount of liquid solidifying metal and to sustain it there for some time required to start forming a layer of solidified metal.

The chain is driven by the lower roller 2 and goes around the sprockets 3, of which the front roller is mounted on the support 5 so that the sprocket can be raised and lowered. The chain is made up of two rows of links 9, each equipped with conical grooves I, into which side wedge lugs of 10 forms 7 enter. The ends of each form are formed from one side convex, and from the other side a concave cylindrical surface. The forms themselves are arranged so that the convex end of one form enters the curved end of the adjacent form. This achieves their tight interfacing.

In order to ensure that the molds are tightly pressed together to each other in the receiving part of the conveyor, in order to prevent the metal, at the time of its pouring or rolling with the upper roller, rush between the forms into the gaps that may form from some inaccuracy of chain assembly, press rolls 12 and 13.

These rolls exert lateral pressure on the links 9, which, with their conical recesses 11, are placed on adjacent wedge projections 10 of the forms 7 and tightly squeeze them. In those parts of the conveyor where the action of the pressure rolls does not extend, there is also tight mutual pressing of the molds; it is achieved due to the fact that the axis of rotation of the forms does not coincide with their center of gravity. Therefore, the molds can be somewhat deviated under the force of gravity downwards.

The magnitude of this deviation depends on the magnitude of the chain play; an obstacle to further evasion will be the emphasis of the removed end of the form at the end of the next link and their tight mutual pressing.

The metal coming from the bucket 6 is conveyed by a conveyor chain under the isepx roll 1 and is molded last into a specific profile (in the example shown in the drawing form 7 and roll 1

given profiles, giving in combination the profile I-beam).

The molded profile after some pressing and deburring with the help of acetylene-oxygen cutters 8 enters a single-strand rolling mill having one or several successive stands 14, where it is rolled, in order to correct the cast profile and give the metal some degree of stretching, ensuring optimal mechanical properties of the product.

The subject matter of the invention.

Mill for direct rolling with the application for the supply of liquid metal in the rolls of the conveyor chain, consisting of. forms supported from the sides by links, characterized in that, in order to ensure tight intersection of the forms at the points of bending and bending of the chain, the ends of the forms 7 are formed along cylindrical concave and convex surfaces in such a way that the convexities of one form are concave adjacent, and their lateral surfaces are provided with wedge lugs 10, intended to enter into the conical recesses 11 of the links 9 of the chain under the influence of the pressure rollers 12, 13.

to