SU929262A1 - Apparatus for automatic monitoring of roll wear in rolling process - Google Patents

Description

one

The invention relates to rolling production, and more specifically to controlling the wear of work rolls in hot and cold rolling mills.

A device for drawing an expected profile of worn sheet rolling rolls is known, comprising a drum with scales of width and weight of a batch of strips applied on it and a sector with scales of thicknesses applied on it, other bands at the entrance to the cage and relative reduction values, kinematically associated with ruler I.

When operating this device, the actual length of the rolled strip and the rolling force are not taken into account.

Closest to the invention is a device for monitoring roll wear by combining pressure and rolling speed signals, containing a tachometer as a rolling speed meter and a mesdoza as a rolling force meter, a watt meter and amplifiers, a single amplifier input connected to the tachometer output, a second amplifier input connected to the output of the dose, and the outputs of the amplifiers are connected to the input of the wattmeter 2.

, 2

During operation of this device, only the average value of wear along the length of the roll barrel is monitored, and its distribution is not controlled, which leads to a deterioration in the quality of the strips along the flatness and transverse thickness variation.

The purpose of the invention is to automatically measure wear along the length of the roll barrel during the rolling process.

Claims (2)

This goal is achieved in that the roller wear monitoring device contains force and speed measuring instruments, a force and speed sensor signal multiplying unit, a pulse converter time, a bandwidth meter, a pulse distribution unit, a pulse counter unit, and a wear recorder. The output of the multiplication units is connected to the time of a time-pulse converter, the outputs of the time-pulse converter and a bandwidth meter are connected to the inputs of the pulse distribution unit, the outputs of the pulse distribution unit are connected to the inputs of the pulse counter unit, and the outputs of the block of pulse counters are connected to the inputs of the wear recorder . Besides. The pulse distribution unit consists of a converter, an aialo-code, a decoder, a generator of pulses, a triggering circuit AND, and pulse channels via ch (sections controlled along the length of the swath, each channel except the channel corresponding to the largest bandwidth, the first input of the OR circuit of each channel is connected to the output of the descrambler, and the second input is connected to the output of the OR circuit of the subsequent channel, the output of the OR circuit of each channel is connected to the first input of the AND circuit, the output of which is the output of the block, and the second the input is connected to the output of the initiating circuit And, the first input of which is the input of the block, and the second is connected to the output of the generator, the last output of the decoder is connected to the circuit And directly.Figure 1 shows a block diagram of a device for controlling roll wear during the rolling process; Fig. 2 is a functional diagram of distribution units and pulse counters. A device for monitoring roll wear comprises a speed meter 1 and a rolling force meter 2, a multiplier unit 3 time-pulse converter 4 a meter 5 strip widths s, pulse distribution unit 6, pulse counter unit 7 and wear recorder 8. The pulse distribution unit 6 contains a converter 9 analog-code, a decoder 10, a pulse generator 11, a logic element AND 12, logic elements OR 13 and 14. The pulse counter unit 7 contains counters 15 pulses in an amount equal to the number of sections monitored along the roll length. The device works as follows. From the meter 1 and 2, the speed and the rolling force, the signal goes to the inputs of block 3 multiplication. According to the clock pulse (the frequency generator of clock pulses in the diagram is not shown), the time-pulse converter 4 produces a pulse, the duration of which is proportional to the product of the speed and the rolling force. This impulse arrives at the input of the logical element I 12, to the other output of which the impulses from the generator of 11 pulses are constantly received. The input of the Converter 9 analog-code signal from the meter 5 bandwidth. From the output of the converter 9 analog-code, the width code is fed to the decoder 10, forming the enabling signal at its corresponding output. This signal through the logic elements OR 13 generates an enable signal at the input of the logic elements AND 14, corresponding to this and all younger bits, so that the pulses from the generator 11 pulses, coming through the logic element And 12 during the passage of the pulse produced by the time-pulse converter 4 , arrive at the counting inputs of those counters 15 pulses that control the roll areas with measured and smaller widths. As a result, an amount accumulates in each pulse counter 15, which is proportional to the work of the friction forces during rolling and characterizes wear on the controlled roll area. The wear recorder 8 records the distribution of wear along the length of the rolls. The use of new elements: time pulse converter, width meter; impulse distribution unit and impulse counter unit. It allows controlling the wear distribution along the rolls during the rolling process, evaluating the transverse thickness variation of the strips and more efficiently using the rolls by specifying the rolling and handling schedules of the rolls, and consequently, reduce the number of scrap and reduce unplanned downtime the camp. An apparatus for automatically controlling roll wear during a rolling process comprising rolling force and speed meters, a multiplier and an indicator, the outputs of the rolling force meters and speeds being connected to multiplier inputs, characterized in that, in order to automatically control wear along the roll barrel, In addition, a time pulse converter, a bandwidth meter, a pulse distribution unit, and a pulse counter unit are added, the output of the multiplying unit being connected to the time input is a pulsed transducer, the transducer is a pulsed output time and bandwidth meter connected to the first and second inputs of the pulse distribution unit, the pulse distribution unit outputs are connected to inputs through wear recorder unit pulse counters. 2. A device according to claim 1, characterized in that the pulse distribution unit consists of an analog-code converter, a decoder, a pulse generator, an initiating circuit AND and a pulse channel according to the number of sections monitored along the roll length, each channel, except for the channel. corresponding to the largest bandwidth consists of AND and OR circuits, the first in-course of the OR circuit of each channel is connected to the output of the decoder, the second input is connected to the output of the OR circuit of the subsequent channel, the output of the OR circuit of each channel is connected to the first input of the AND circuit, the output of which is the output of the block, and the second input is connected to the output of the starting circuit I, the first input of which is