SU845890A1 - Method of investigating interstand deformation of strip at continuous rolling - Google Patents

Description

(54) METHOD FOR STUDYING OF INTER-CELLULAR STRIP DEFORMATION WHILE UNDERTAKING ROLLING

I

The invention relates to rolling production and can be used for researching and calculating speeds and reduction modes for continuous section mills.

There is a known method for studying the deformation during the rolling of a strip, which consists in obtaining a non-rolling by stopping and diluting the rolls in the process of rolling and subsequent measurements of the geometric dimensions of individual sections of the non-rolling 1.

The disadvantages of this method are the difficulty of its application and low accuracy during continuous rolling due to additional inertial reductions.

The purpose of the invention: - improving the accuracy of determining the deformation of the strip during continuous rolling.

The goal is achieved by simultaneously diluting the rolls in the previous and subsequent cages with a speed in each stand exceeding the vertical component of the flow velocity of the metal on the contact surface in the plane of the metal entrance in this stand, and measuring the dimensions of the cross-sections of the strip along the entire length inter-, cellular gap.

The drawing schematically shows the scapula. lanes in two continuous cages and roll velocity and current vectors of the metal.

The method is carried out as follows.

The vertical component of the speed of the strip is the largest in the plane of the entrance to the rolls. Hence the speed p;

3 rolls should be

VR Vo2: Voxtgo (o,

V, - roll dilution speed

1st

Where

and 2nd stand; Vq. - Vertical component

the orbit of the metal flow on the xs of the contact surface in the plane of the entrance to the deformation zone; y is horizontal component (| coOX

the growth of the contact metal

tny surface in the focus of deflation;

o-capture angle.

The movement of the rolls with the required speed can be carried out using explosive mechanisms, special cells with shooting rollers and other known devices, ensuring synchronization

Claims (1)

Claim The method of studying the interstand deformation of the strip during continuous rolling, including diluting the rolls and measuring the dimensions of the cross-section of the rolled strip, characterized in that, in order to improve the accuracy of determining the deformation of the strip during continuous rolling, the rollers are simultaneously bred in the previous and subsequent stands with a speed in each stand exceeding the vertical component of the flow rate of the metal on the contact surface in the plane of the metal entrance in this stand, and measure the dimensions of the cross-sections of the strip along the entire length interspace gap.