CN103157669B - The control method of nipping in a kind of rolling heavy rail - Google Patents

Abstract

The present invention relates to rolling mill practice control field, relate in particular to the control method of nipping in a kind of rolling heavy rail, it is characterized in that, adjust the main motor speed of universal mill, make rolled piece obtain enough kinetic energy, the UR roller pass of nipping smoothly, its concrete operation step is as follows: 1) before rolled piece enters universal mill UR roller, pass water is closed, and stops the automatic rolling program of universal mill; 2) when rolled piece is traversing come after, the rotating speed of the main motor of universal mill is brought up to 100～110 revs/min; 3) rolled piece is rubbed 30～40 seconds on UR roller, then the rotating speed of the main motor of universal mill is decelerated to 10～20 revs/min, until rolled piece is snapped into pass; 4) rolled piece is nipped after 2～3 meters of passes, manually pours out rolled piece, recovers universal mill automatic rolling program. Compared with prior art, the invention has the beneficial effects as follows: make the rolled piece UR roller pass of being nipped smoothly, realize Based Intelligent Control, be applicable to more than 50 kilograms rank heavy rail.<!--1-->

Description

The control method of nipping in a kind of rolling heavy rail

Technical field

The present invention relates to rolling mill practice control field, relate in particular to the control of nipping in a kind of rolling heavy railMethod.

Background technology

In the time of the more than 50 kilograms rank heavy rail of rolling, often there is the UR roller phenomenon of not nipping in universal mill,Analyze find, when roughing 1100 milling train five holes use be last footpath roller time, due to the UR of universal millThe new roller of roller 1120 is large roll neck, and phenomenon is more obvious, can cause first and second piece steel of open rolling notNip. Because universal mill is automatically to control, in the time nipping, rolling mill main motor rotating speed can not be timelyAdjust, as long as traversing the coming of rolled piece is exactly speed (biting speed) rolling of 40 revs/min, nothingMethod speed change, so not only causes a large amount of waste products but also also has longer accident treatment time, shadowRing production direct motion, cause the increase of production cost.

Summary of the invention

The object of this invention is to provide the control method of nipping in a kind of rolling heavy rail, employing program is intervenedThe more than 50 kilograms operation of rolling of rank heavy rail, improves the phenomenon of not nipping.

For solving the problems of the technologies described above, technical scheme of the present invention is:

The control method of nipping in rolling heavy rail, in the time that rolled piece enters universal mill UR roller, passes throughAdjust the main motor speed of universal mill, make rolled piece obtain enough kinetic energy, the UR roller hole of nipping smoothlyType, its concrete operation step is as follows:

1) before rolled piece enters universal mill UR roller, the pass water of universal mill is closed, stop ten thousandThe automatic rolling program of energy milling train;

2) when rolled piece is traversing come after, the rotating speed of the main motor of universal mill is brought up to 100～110 turn/Minute;

3) rolled piece is rubbed 30～40 seconds on UR roller, then the rotating speed of the main motor of universal mill is slowed downTo 10～20 revs/min, until rolled piece is snapped into pass;

4) rolled piece is nipped after 2～3 meters of passes, manually pours out rolled piece, then opens the pass of universal millWater, recovers universal mill automatic rolling program, starts normal rolling.

Compared with prior art, the invention has the beneficial effects as follows: adjust ten thousand by method first quick and back slowEnergy rolling mill main motor rotating speed, makes rolled piece obtain enough kinetic energy, and rolled piece rubs on UR roller simultaneouslyAfter 30～40 seconds, workpiece front end is by wear down, the rolled piece UR roller pass of being nipped smoothly, reduce because ofThe steel scrap causing of not nipping occurs, is applicable to more than 50 kilograms rank heavy rail,Ensure production direct motion.

Detailed description of the invention

Below in conjunction with detailed description of the invention, the invention will be further described:

The control method of nipping in a kind of rolling heavy rail of the present invention, improves more than 50 kilograms rank heavy rail and entersThe phenomenon of not nipping while entering universal mill, is in the time that rolled piece enters universal mill UR roller, by adjustingThe main motor speed of whole universal mill, makes rolled piece obtain enough kinetic energy, the UR roller pass of nipping smoothly, its concrete operation step is as follows:

1) before rolled piece enters universal mill UR roller, the pass water of universal mill is closed, stop ten thousandThe automatic rolling program of energy milling train;

2) when rolled piece is traversing come after, the rotating speed of the main motor of universal mill is brought up to 100～110 turn/Minute;

3) rolled piece is rubbed 30～40 seconds on UR roller, then the rotating speed of the main motor of universal mill is slowed downTo 10～20 revs/min, make the speed of a preshoot of rolled piece acquisition owing to slowing down suddenly, until rollPart is snapped into pass;

4) rolled piece is nipped after 2～3 meters of passes, manually pours out rolled piece, then opens the pass of universal millWater, recovers universal mill automatic rolling program, starts normal rolling.

Adjustment process of the present invention can be introduced program, realizes Based Intelligent Control.

Claims (1)

1. the control method of nipping in rolling heavy rail, is characterized in that, enters universal mill at rolled pieceWhen UR roller, by adjusting the main motor speed of universal mill, make rolled piece obtain enough kinetic energy, suitableThe profit UR roller pass of nipping, its concrete operation step is as follows:

1) before rolled piece enters universal mill UR roller, the pass water of universal mill is closed, stop ten thousandThe automatic rolling program of energy milling train;

2) when rolled piece is traversing come after, the rotating speed of the main motor of universal mill is brought up to 100～110 turn/Minute;

3) rolled piece is rubbed 30～40 seconds on UR roller, then the rotating speed of the main motor of universal mill is slowed downTo 10～20 revs/min, until rolled piece is snapped into pass;

4) rolled piece is nipped after 2～3 meters of passes, manually pours out rolled piece, then opens the pass of universal millWater, recovers universal mill automatic rolling program, starts normal rolling.