Speed cooperative control method for heavy and medium plate mill and conical roller beds

Abstract

The invention discloses a speed cooperative control method for a heavy and medium plate mill and conical roller beds and relates to the technical field of metal pressure working. The speed cooperative control method for the heavy and medium plate mill and the conical roller beds includes the following steps that according to a roller bed rolling parameter of a plate, a forward slip coefficient in a plate rolling process is calculated, and the roller bed rolling parameter is obtained from a rolling mill two-stage process model set system; speeds of the plate rolled in the roller bed at the inlet position and the outlet position of a rolling mill are calculated through the rotating speed of a roller of the rolling mill and the obtained forward slip coefficient; the rotating speeds of the rolling mill at the inlet and the outlet conical roller beds are calculated respectively according to the inlet speed and the outlet speed of the plate, the width of the plate and the geometrical shape parameters of the conical roller beds, the calculated rotating speed values are sent to a roller bed motor transmission system for execution, and therefore speed setting is conducted respectively for the front and the rear conical roller beds of the rolling mill. The speed cooperative control method for the heavy and medium plate mill and the conical roller beds solves the problems that the contact portion of the plate and the conical roller beds is poor in linear speed, and the surface quality of the plate and the service life of the roller beds are seriously affected.

Description

technical field [0001] The invention relates to the technical field of metal pressure processing, in particular to a speed cooperative control method of a plate rolling mill and a tapered roller table. Background technique [0002] Metal plate is usually produced through multi-pass reversible reciprocating rolling in a plate rolling mill. Due to the high requirements on the surface quality of some metal plates, the layout of the front and rear roller tables of the medium and heavy plate rolling mill is as follows: figure 1 The purpose of the tapered roller table shown is to make the two sides of the plate contact the roller table, and the other parts are suspended to avoid contact with the roller table, so as to avoid the scratch defect caused by the lower surface of the plate contacting the roller table. However, in the actual rolling process, due to the small contact area between the plate and the roller table (only the two sides are in contact), when there is a linear sp...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for synergistic control of the speed of the plate rolling mill and the tapered roller table. This method can solve the problem that there is a linear speed difference in the contact part between the plate and the tapered roller table, which seriously affects the surface quality of the plate and the use of the roller table. The problem of longevity

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