Control method for preventing abnormal manual steel pouring of reversible H-shaped steel universal beam roughing mill set

Abstract

The invention is applicable to the technical field of electric control, and particularly provides a control method for preventing abnormal manual steel pouring of a reversible H-shaped steel universalbeam roughing mill set. The control program of the method comprises the following steps: setting the functional blocks FCYSDC01-FCYSDC15 as a determiner unit for abnormal manual steel pouring of thereversible H-shaped steel universal beam roughing mill set; and setting FCYSDC06, FCYSDC08, FCYSDC10 and FCYSDC16-FCYSDC22 as a manual speed control unit under the abnormal manual steel pouring stateof the H-shaped steel universal beam roughing mill set. When an abnormal manual steel pouring state occurs; the control program firstly decelerates and stops the three-frame main transmission of the universal beam roughing mill set. After setting the time of the three-frame shut-down, the setting value of the manual operation joy-stick output speed of the H-shaped universal beam roughing set is enabled (the setting value is shown in the description). During the period of time of abnormal manual steel pouring forced interruption, the roughing unit can have enough time to process the rolled pieces which normally stay in the universal roughing mill set, thereby thoroughly avoiding the violent self-excited oscillation of the three-frame main transmission of the universal beam roughing mill setcaused by sudden abnormal manual steel blocking slippage.

Description

technical field

[0001] The invention belongs to the technical field of hot rolling looper control, and provides a control method for preventing abnormal manual steel pouring of a reversible H-shaped steel universal roughing mill. Background technique

[0002] For the large H-beam production line of the Maanshan Iron and Steel Long Products Division, its H-beam universal roughing mill consists of 3 rolling mills——1# Universal Roughing Mill (U 1 ), edge rolling mill (ED) and 2# universal roughing mill (U 2 ). 1# and 2# universal roughing mills are 5500KW four-roll mills (two horizontal rolls and two vertical rolls), and edge mills are 2000KW two-roll mills (two horizontal rolls). The H-beam universal rough rolling unit can complete multi-pass reciprocating rolling of H-beam in a fully automatic mode. The procedure and the manual speed operation handle (ie JOY-STICK) are given together. In the fully automatic rolling process of the universal roughing rolling mill, it is oft...

Examples

Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The control program of the abnormal manual steel pouring control method for preventing the reversible H-shaped steel universal roughing mill of the present invention is as follows figure 1 shown. In this diagram:

[0015] NCM is a "numerical comparison" function block, when X1>X2, QU is '1', when X1=X2, QE is '1', when X1

[0016] NSW is the "digital input switch" function block, when I='1', Y=X2, when I='0', Y=X1;

[0017] RSR is the "RS flip-flop with R priority at the reset terminal" function block. When S is '1' and R is '0', Q is '1' and QN is '0'. When S is '1', R is ...

technical field

[0001] The invention belongs to the technical field of hot rolling looper control, and provides a control method for preventing abnormal manual steel pouring of a reversible H-shaped steel universal roughing mill. Background technique

[0002] For the large H-beam production line of the Maanshan Iron and Steel Long Products Division, its H-beam universal roughing mill consists of 3 rolling mills——1# Universal Roughing Mill (U 1 ), edge rolling mill (ED) and 2# universal roughing mill (U 2 ). 1# and 2# universal roughing mills are 5500KW four-roll mills (two horizontal rolls and two vertical rolls), and edge mills are 2000KW two-roll mills (two horizontal rolls). The H-beam universal rough rolling unit can complete multi-pass reciprocating rolling of H-beam in a fully automatic mode. The procedure and the manual speed operation handle (ie JOY-STICK) are given together. In the fully automatic rolling process of the universal roughing rolling mill, it is oft...

Examples

Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The control program of the abnormal manual steel pouring control method for preventing the reversible H-shaped steel universal roughing mill of the present invention is as follows figure 1 shown. In this diagram:

[0015] NCM is a "numerical comparison" function block, when X1>X2, QU is '1', when X1=X2, QE is '1', when X1

[0016] NSW is the "digital input switch" function block, when I='1', Y=X2, when I='0', Y=X1;

[0017] RSR is the "RS flip-flop with R priority at the reset terminal" function block. When S is '1' and R is '0', Q is '1' and QN is '0'. When S is '1', R is ...

Images