SU1463384A1 - Method of regulating the process of cutting of continuous ingot - Google Patents

Abstract

The invention relates to the field of foundry, in particular to the continuous casting of metals on continuous casting machines. The purpose of the invention is to improve the cutting accuracy of a continuous ingot by taking into account the change in the real time response of the clamps. The goal is achieved by the fact that in the process of adjusting the process of cutting a continuous ingot, which takes into account the speed of movement of a continuous ingot and the response time of the clamps, when issuing a cut command, the current real time of clamp operation is measured after issuing each next cut command. 1 il. with (in

Description

The invention relates to the field of foundry, namely to the continuous casting of metals on machines. nach. continuous casting blanks.

The purpose of the invention is to improve the cutting accuracy of a continuous ingot by taking into account the change in the real time response of the clamps.

The drawing shows a device that implements the proposed method.

The device comprises a cutting start unit 1, a clamp triggering sensor 2, a computing unit 3, measuring roller 4, sensor 5 of the current ingot length, timer 6, sensor 7 of the speed of ingot movement, unit adjuster 8 of measuring length, unit setter 9; time information clips.

A gas machine may be used as a power cutter.

cutting with the control system computing unit - microcomputer SM-1800, - terminal triggering sensor - end switch; current ingot length sensor - PDF-3 sensor; the timer is a regular timer from the USO SM-1800-nomenclature, the ingot speed sensor is a tachometer.

At the initial moment of casting, using the setting points 8 and 9, the predetermined measuring length of the workpieces and the initial value of the time of operation of the clamps are set. Before the head of the continuous ingot reaches the initial position of the cutting device, the cutting device is returned to its original position.

After the front end of the ingot crosses the axis of the initial position of the cutting device 1, in

unit 3. starts counting the current length of the ingot according to the sensor 5 of the current length of the ingot, us-. measured on the axis of the measuring roller 4. At the same time, in calculating block 3, a calculation is made of the anticipation of issuing a command to cut using the formula

 Vp, (1)

where Lijn is the lead value for

commands for cut, mm; the current response time of the cutting device clamps, cj ingot speed, mm / s.

The casting speed Vp enters the computing unit 3 from the ingot speed sensor 7. The current time of the clamps operation at the first cut is set from the setpoint 9 of the initial time of the clamps, at subsequent cuts it is calculated based on the data of the previous cut.

In computing unit 3, a constant inequality check is performed.

(2)

 R

T - J-C-V

 R

where is l

mt pm

Mt

h is the current measuring length of the ingot calculated from the readings of sensor 5 of the current length;

the specified ingot length, acted upon by the 8-dimensional length sensor, I As soon as the I (2) inequality is fulfilled, a command is issued to cut with a single I time memory of the value of the current time given by the fe timer at the moment of arrival of the signal from sensor 2 the operation of the terminals, the new value of the current operation time of the modes is calculated by the form

 T. P - T, in, (3)

szg

Tj -,

0

g 25

T il

where T. is the current time value,. set by timer 6 at the time of the arrival of the signal. the value of the current time, issued by timer 6 at the time of issuing the command to the res. After the end of the cut, the cutting device 1 returns to its original position and the cycle is repeated anew.

Example. Let Tf, calculated with the previous cut, be 1.8 s, Ln, 10,000 MMi mm / s, then according to (1) mm,

Issuing the next cut command will be made when the inequality (2) is fulfilled

Ъ „-. - 365: 10,000 mm.

ffi

Using the proposed method allows to improve the cutting accuracy of a continuous ingot.

Claims (1)

Invention Formula A method for controlling the cutting process of a continuous ingot, which includes preempting a cutting device command, calculated by taking into account the real time of the clamps and the speed of the ingot movement, characterized in that, the time of issuing the next cut command, measure the end time of the clamps, and determine the current time T of the cut-off clamps using the formula T, where the exact team on the cut, cj - t - t -with the value of the current time 45. ..R value of the time of operation of the nozzles of the gas cutters, p. About About About About