SU1018730A1 - Multigroove rolling method - Google Patents

Abstract

THE METHOD OF NIOGORUCHYYYYYYYYYYYYYY OF THE ROLLER VNLVCHUYUTSII formation of peals, consisting of two bridged workpieces, alternately, as far as 1 anos of the rolls, a two adjacent calibrated caliber with the displacement and the rolling line along the roll barrels on the square, the distance of the line, i have to go to the line, i should go to the line, i should go to the line, i’m going to go to the line, I’m going to go to the surface of the rollers Yusch and with the fact that, for the purpose of e: sh - | $ nn of the overhaul life of the rolls by increasing their useful drum storage and time {Caliber troubles, the formation of peals -SHaMaiie is carried out in pairs of streams «1 hruch1 | After that, the rolling line is shifted by the width of the single stream to the center of the caliber and the formation of subsequent races was realized in the middle brooks of the caliber.

Description

The invention relates to the processing of metals by pressure, in particular, to the technology of rolling billets of either crimping-billet aggregates and roughing groups of stands of section and wire mills.

There is a known method of rolling profiles, including one-handed rolling of billets in a series of successive calibers with a form of rolling in one of the passes alternately as the rolls wear, in two adjacent similar calibers with a displacement of the line of rolling along the roll barrel by a width equal to the distance between the centers of these calibers flj.

The disadvantage of this method is the inability of the nominal loading of rolling stands by passes in one-way rolling of profiles of various sizes and, consequently, a decrease in the productivity of rolling mills.

The closest to the invention in its technical nature is a multi-strand rolling method, including the formation of rolls consisting of two bridged blanks, alternately as the rolls wear, in two adjacent gauges with the rolling line shifted along the roll barrel by a width equal to the distance between ridges of these calibers 23.

The disadvantage of the known method is the reduced useful length of the rolls of rolls due to the presence of rolls of rolls between adjacent calibers and a short turnaround time between rolls, determined by the wear of mainly ridges of calibers.

The aim of the invention is to increase the turnaround time between rolls by increasing the effective length of their rolls and the working time of the gauges.

This goal is achieved by the fact that according to the multi-strand rolling method, which includes the formation of rolls consisting of two bridged blanks, alternately, as the rolls wear, in two adjacent gauges with the rolling line offset along the barrel of rolls by a width equal to the distance between the ridges of these calibers, the formation of rolls is first carried out alternately in the extreme pairs of streams of a four-strand caliber, after which the rolling line is displaced by the width of one stream to the center of the caliber and form5 myrvan The subsequent rolls are carried out in medium gauge creeks. FIG. 1-3 shows the sequence of forming the roll into a stream of four-strand caliber according to the method of wear and tear.

When rolling billets, the formation of roll 1 (Fig. 1} is first produced in two strands x 2 and 3 of four-strand caliber. After the ridges "and 5 are worn, the formation of roll b (g, 2) in this pass is carried out in two other strands x 7 and 8 of the same four-strand caliber, shifting the line of rolling along

0 roll barrels with a width equal to the distance t between ridges 4, 5 and 9, 10 pairs of streams 2, 3 and 7 8. After the ridges 9 and 10 are worn, the rolling line is displaced along the roll barrel by width C equal to the width of one stream, to the center of the four-strand caliber and the formation of roll 11 (Fig. 3) is made in the middle brook x 3 and 7 until the ridges 12 and 13 wear.

- The rolling method does not exclude the initial formation of a roll in two medium-sized creeks of a four-strand caliber and the subsequent alternate, as the ridges of the caliber wear, the formation of a roll in

5 extreme pairs of streams caliber.

The method can be used for two-strand rolling billets and profiles on the crimp-billet reversible and large-size

 mills of linear type, in rough groups of stands of continuous billet mills. The most rational use of the proposed method in those passes, in KOTOS, the preferential wear of the ridges of the multi-grooved caliber takes the dimensions of the web of the roll connecting the workpieces or profiles beyond the optimal limits and prevents the quality separation of the workpieces. These include, as a rule, gaps (calibers) preceding the separators.

Example. . Rolling rebar periodic profile number 12 produced on the mill 280 linear type, located in three lines: crimp, black and pure.

Claims (1)

METHOD OF MULTI-BREED LRO ~ ROLLERS, including the formation of races consisting of two billets connected by a jumper, alternately, as they roll, in two adjacent gauges with a shift of the rolling line along the roll barrel by a width equal to the distance between the rubble of these calibers, about The key is that, in order to increase the overhaul life of the rolls by increasing the useful length of their rolls and the working time of the calibers, the formation of the rolls is first carried out alternately in the extreme pairs of streams with four arms of caliber after Th. On the other hand, the rolling line is shifted by the width of one stream to the center of the caliber and the formation of subsequent races is carried out in the middle streams of the caliber. □ Oh Μ ίο 1 1018730