SU1643129A1 - Stand for strip rolling - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in the rolling of strips, preferably thin strips. Purpose i of the invention is to improve the quality of the rolled strip by improving the conditions for its transportation by wider coverage of the rotating rolls. With such an arrangement of the deforming elements, the contact area of the strip with the rotating rollers is larger than with the fixed elements. In this case, due to increased frictional forces, the conditions for transporting the strip through all deformation centers are improved. By reducing or eliminating skidding of the rolls, the unevenness of the deformation is reduced. The strip thinning ratio decreases by a factor of 1.2. 1 il. from 8 (L S

Description

The invention relates to the processing of metals by pressure and can be used in the rolling of strips, preferably thin strips.

The purpose of the invention is to improve the quality of the rolled strip by improving the conditions for its transportation by wider coverage of the rotating rolls.

The drawing shows a rolling stand, a general view.

The cage for rolling the strip contains four drive working and support rolls 1 and 2, four deforming elements 3 with their deforming surfaces 4. In the pillows of the work rolls 1 there are hydraulic balance systems (in the drawing

not shown). Pillows workers and support rolls 1 and 2 are placed in the grooves of the central part of the frame 5. The deforming elements 3 are installed in the peripheral part of the frame 6, fixed with latches and equipped with pressure devices 7.

The cage works as follows.

Using the pressing devices 7, the required initial gaps (or pressing) between the deforming surfaces 4 of the fixedly installed deforming elements 3 and the work rolls 1 are set. In these gaps, the strip 8 is set and rolled. In case of wear, the deforming surfaces 4 unfasten the latches, remove the deforming

3

Ј

with y

WITH

elements 3 of frame 6 and replace them. The systems of hydro-balancing of the work rolls 1 keep the last tons of fall in the absence of the stand,

deforming elements 3.

When rolling in this stand, a strip of revolving rolls bends around. The areas of contact with the drive roller are larger than the non-JQ moving element, which in turn increases the energy supplied to the deformation zone from the side of the rotating roll, and consequently, the conditions for transporting the strip are improved.

As a result of the improvement in the transportation conditions of the strip, the unevenness of the deformation in the deformation zone is reduced by reducing the knockout rolls, which leads to an increase in the quality of the rolled strip.

Improving the transportation conditions of the strip makes it possible to reduce the thickness of the strip by 1.2 times.

Claims (1)

Claim for rolling a strip containing a frame with rotating work rolls and stationary deforming elements, each work roll mounted against the corresponding fixed element, characterized in that, in order to improve the quality of the rolled strip by improving the conditions of its transportation by wider strip coverage rotating rolls, the frame is made of two parts: central with rotating rolls placed in it, and the peripheral part surrounding it with bubbled in her fixed elements.