SU1235925A1 - Apparatus for automatic feeding of aluminium wire in casting ladle - Google Patents

Description

The invention relates to ferrous metaplurgia, namely to the deoxidation of the metal in the ladle.

The purpose of the invention is to reduce the processing time of the steel with a deoxidizing agent by increasing the accuracy of the pumping of the acid into the ladle.

The drawing shows a diagram of the device.

The device for the automatic insertion of aluminum wire into a metal container consists of a riot of wire 1, a measuring roller 2 and pull-out rollers 3, scissors 4, a bucket 5 with metal and a sensor 6 of pulses. The pulses from sensor 6 are considered to be counter 7 and are converted by the converter 8 code analog to an analog signal, which is fed to multiplication unit 9, which multiplies it by the signal from unit 10, specifying the weight of the wire unit. The resulting weight of the wire in analog form is fed to the recorder 11 and is converted by the converter 12 analog-code with a digital display board 13 to a four-digit binary-decimal code, arriving at the first inputs of the comparison elements 14, the second inputs of which receive a signal from the converter 15 s digital display 16

The signal from the 17-oxidation sensor enters the oxidation measurement device 18, the output of which is connected to the input of the memory unit 19, the signal from which is fed to the first input of the 20-step operation unit, to the second input of which a signal comes from the weight meter 21, the input of which is connected to weight sensor 22. The output of the computational operations unit 20 is connected to the input of the analog-code converter 15, which converts an analog signal into a bit binary-decimal code.

The signals from the comparison elements 14 are fed to the And 23 element and from it to the relay 24, the contact 25 of which switches.

The device for automatic insertion of aluminum wire into the steel casting ladle involves the sequential implementation of the following operations: insertion of the oxidation sensor 17 into the molten metal for a time of 5-10 s and to a depth of 500 mm, after which its measuring portion burns (in the drawing, the location of the oxidation sensor 17 on a surface

metal is shown conditionally) and the supply of aluminum wire to the ladle, which lasts 1-2 minutes. Therefore, the signal from the oxidation sensor 17, is for

this constant deactivation cycle, is fed to the oxidation measurement unit 18 and then to the memory unit 19, which is used to store information on the metal oxidation for the period of the deacidation cycle.

The device works as follows.

Signal from measuring device 18

the oxidation of liquid steel, which is proportional to the signal coming from the steel oxidation sensor 17, is converted into an analog signal, in the memory in block 19 of the memory and from the last

It enters the first input of a block of 20 calculation operations, the second input of which receives a signal from a weight meter 21, proportional to the weight of liquid steel in the ladle.

Block 20 computational operations 1: 1 calculates the required weight of the deoxidizer on the bucket 5 using the formula

.. but.

(one)

where K is the coefficient of excess deoxidizing (the value is constant, it is determined practically);

Shd - the mass of steel;

Ac metal oxidation.

An analog signal proportional to the weight of the deoxidizer required on the bucket 5, from block 20 calculating operations arrives at the converter 15 analog-code and is displayed on the digital indicator 16. After determining the weight of the deoxidizer required on the bucket, the operator turns on driving rollers 3. Started cycle deoxidation.

In addition, the rollers 3 pull the projecter and it rotates the measuring roller 2. Sensor 6 receives pulses, the number of which is proportional to the length of the wire, to counter 7, which converts them into an analog signal and feeds to multiplication unit 9, where the actual wire weights.

5 The obtained value of the actual weight by the converter 12 analog-code is converted into a binary-decimal code, while the converter 12 flashes the value of the actual weight on the digital indicator 13.

From converter 12, the signal in a binary-decimal code, proportional to the Ha-mfHbffi weight, is transmitted to the first inputs of the comparison elements 14, the second inputs of which receive a signal from the converter 15 analog-code proportional to the weight of the diverter required for feeding into liquid metal.

The equality of signals of the weight of the wire necessary to the ladle and filed (I

First, the signal to the element 23, which, when all the signals supplied to it from elements 14 are equal to (1), signals to the relay 24, which by its contact 25 turns off the pull rollers 3 and turns the scissors 4 on to the cut.

After being cut with scissors, the 4th oxidation runs out and the information on the oxidation value is erased from the memory unit 19.

The use of the device will reduce the processing time of liquid steel deoxidizer.

(-p0

Editor I. Derbak

Compiled by V. Etingen Tehred L. Oleinik

Order 3062/24 Circulation 552Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader G. Reshetnik

Claims (1)

DEVICE FOR AUTOMATIC INPUT OF ALUMINUM WIRE INTO A STEEL-FILLING BUCKET, containing a measuring roller, a pulse sensor mounted on one support with a measuring roller, connected to a counter, pulling rollers, a code-to-analog converter, a weight unit of a wire length unit, a converter, an analog code-to-digital converter, an analog-to-digital converter circuit I, relay, and the counter output is connected to a code-analog converter, the output of which is connected to the first input of the multiplication unit, the second input of which is connected to the unit weight unit In order to reduce the length of the wire, the output of the multiplication unit is connected to the input of the analog-code converter, the outputs of which are connected to the inputs of the comparison elements, the outputs of which are connected to the inputs of the circuit And, the output of which is connected to the relay, characterized in that, in order to reduce the processing time of the steel, the deoxidizer by increasing the accuracy of the supply of the deoxidizing agent to the bucket, it is equipped with a steel oxidation meter, a memory unit, a calculated operations unit, a second analog-to-code converter, a bucket weight sensor with metal, a weight meter, an oxide sensor liquid steel connected to the steel oxidation measuring unit, the output of which through the memory block is connected to the first input of the calculated operations unit, the second input of which is connected to the output of the weight meter, and the output - to the input of the second analog-code converter, the outputs of which are bitwise and decadewise connected with comparison elements, a bucket weight sensor with metal is connected to a weight meter. 1.235925