SU969340A1 - Groove of rough rolls for rolling plates and strips - Google Patents

Description

(54) CALIBR OF BLACK ROLLS FOR ROLLING SHEETS AND STRIPS

; one

The invention relates to the processing of metals by pressure, and specifically to the rolling of sheets and strips, and can be used on hot plate and broadband mills.

A caliber of rough rolls for rolling sheets and strips is known, which includes annular grooves of the rolls, forming asymmetry areas of the roll gap relative to its horizontal axis in the form of opposing projections and depressions with alternating asymmetry sign.

This provides asymmetrical deforming conditions and eliminates bending of the strip, since in each section of the roll gap, equal to the wavelength of the generator, the asymmetry sign changes to the opposite. :

The disadvantage of the capybrum is the intensive change in the width of the roll, especially in the process of its subsequent deformation in smooth rolls, mainly due to the bending deformation, which

leads to a significant decrease in the stability of the strip width along its length and does not allow improving the workability of the metal in terms of its mechanical properties in the transverse direction.

The purpose of the invention is to increase the quality of a strip by improving its workability and stabilizing the width of the strip.

The goal is achieved by

10 that in the well-known caliber, including annular grooves on the roll barrels, forming areas of asymmetry of the roll gap relative to its horizontal axis with alternation of the asymmetry sign,

15; in the asymmetry areas, the roll gap is larger than in the symmetric gap transition sections separating them.

FIG. 1 shows a set of rolls,

20 in FIG. 2 - the same, option.

Upper roller 1 and lower roller 2 are made with alternating annular grooves 3 and 4, which are different

Claims (1)

Claim Caliber of draft rolls for rolling sheets and strips, including annular grooves on the roll barrels, forming asymmetry sections of the gap of the rolls relative to its horizontal axis with alternating asymmetry sign, characterized in that, in order to improve the quality of the strip by improving its workability and stabilization of the strip width, the aforementioned asymmetry sections, the roll gap is made larger than on the transition sections of the symmetrical gap separating them.