LAG-S100 Ladle Slag Detection System (Eddy Current)
LAG-S100Ladle Slag Detection System (Eddy Current)
Overview
The continuous casting ladle slag detection device is used to detect the slag content of the ladle nozzle in the steelmaking continuous casting process, so as to improve the cleanliness of the tundish molten steel and obtain the best yield of the ladle molten steel. The device adopts the principle of electromagnetic induction detection.
The meaning of slag detection
To achieve high output: In order to ensure the cleanliness of molten steel in the ladle,if we detectslag by eyes, weoften close the ladle prematurely,so that it willreducethe yield of molten steel.However, if we use slag detection system, we can detect slag accurately and timely, so that theamount of residual steel is controlled at 1%-2% to achieve high output.
Improve the cleanliness of molten steel: The steelmakingslaggetsinto the tundish is the main reason that affects the cleanliness of finished steel. The use of theslag detection system can reduce the amount of steelmakingslag carried into the tundish to a very small amount, and can also reduce the defects on the slab surface at least 80%.
Avoid blockage of the nozzle: Thesteelmakingslaggetsinto the tundish is also the main reason for the blockage of the nozzle due to secondary oxidation. After using the slag detection system, the blockage of the nozzle can be greatly reduced.
The composition of the system
The slag detection system mainly consists of five parts:sensor, preamplifier, signal processing unit, central processing unit and platform control box.
System control flow chart
The working principle of the sensor
The sensor adopts the principle of electromagnetic induction for signal detection, and its typical structure is two concentric coils. When the primary coil is supplied with an intermediate frequency excitation current, due to the action of the magnetic field, an eddy current is generated in the steel flow, and the direction of the magnetic field is opposite to the direction of the magnetic field generated by the coil. Because the conductivity of slag is much lower than that of molten steel at high temperature (about 1/1000), the eddy currents generated in slag are much smaller than those generated in molten steel. In the process of pouring steel, all the molten steel flows out at the beginning of pouring. At the later stage of pouring,there will besteelmakingslag mixingout, which reduces the conductivity of the melt and enhances the electromagnetic field. This signal is measured by the secondary coil.
The principle of sensor construction
The primary coil and the secondary coil are isolated by high temperature resistant materials,andthe coilsareencapsulated in a flat ring made of special steel as a whole. Thentwo pairs of signal lines are drawn from the two-pole coil using a unique technical method, and sent to the secondary part.
The installation of the sensor
The sensor is installed in the ladle reference plate, coaxial with the ladle nozzle, and acts as a guide part for the ladle nozzle casingtubeat the same time.
The technical Features
-
The ladle slag’scoil made of imported materials and installed at the bottom of the ladle as a guide component for the ladle nozzle can work normally in an environment of900 °C for a long time, achieving no burning, no damage and good weak slag signal detection characteristics . The average service life of the sensor reaches more than 800 furnaces.
-
The signal connector of theladleslag coil can meet the reliable connection of the microvolt level (1uV=10-6V) slag signal under the conditions of high temperature, high impedance and strong oxidation, and realize the repeated use of long-term zero impedance.
-
After theladleslag coil works for a long time in a high temperature environment,changes in distributed parameter characteristics such as impedance cause signal drift. The system can automatically identify and compensate, which ensures the accuracy of system signal processing and alarming.
-
The function iscomplete, which can actually reflect various information of molten steel casting. It has various functions such as curve storage, status display, alarm display, output control,andinformation printing, etc., which can effectively meet the requirements of the production process.
The technical indexes
Sampling time: <10ms
System response time: <0.1s
Zero point average volatility: <4%
System detection value accuracy: <5% (dutyratio)
Slag volume alarm setting value: user-defined (recommended to use 20%)
Average sensor life: >800 furnaces
The working condition
Sensor use ambient temperature: <900℃
Operating temperature of secondary instrument: <40℃
Storage and transportation temperature of secondary instrument: -20℃-+70℃
The relative temperature used by the secondary instrument: at 25°C, the maximum is 95%
Send product request
Other supplier products
 |
MLC-V235 Continuous Casting Mold Level Automatic Measurement System | MLC-V235Continuous Casting Mold Level Automatic Measurement System Overview The automatic controlforthe molten steel level of the mold is one o... |
 |
Ladle Comprehensive Management System | LDT-N200 Ladle Integrated Management System Overview: In the steelmaking production process, the ladle is the key equipment for holding molten ste... |
 |
MAC-G320 Automatic Mold Flux Feeding Machine | MAC-G320Automatic Mold Flux Feeding Machine Overview MAC-G320automaticmoldfluxfeeding systemis a new generation product ofautomaticaddingmoldfl... |
 |
Laser Mold Taper Measuring Instrument | MDC-L200 Laser Taper Measuring Instrument (Multi-dimensionalDetection) Overview: Laser taper measuring instrument(multi-dimensional detection) is ... |
 |
SPD-V010 Handheld Roll Gap Checker | SPD-V010Handheld Roll Gap Checker Overview The handheld roll gapcheckeris specially used to measure the length between spherical surface, arc... |
Same products
 |
Dynamic Fatigue Testing Machines | Seller: Beijing United Test Co., Ltd. | Dynamic Fatigue Testing Machines Dynamic Fatigue Testing Machine Manufacturer| Servo Hydraulic &... |
 |
Horizontal Testing Machine | Seller: Beijing United Test Co., Ltd. | Horizontal Testing Machine Horizontal Tensile Testing Solutions for High-Load and Long Specimens... |
 |
Slow Strain Stress Rate Testing | Seller: Beijing United Test Co., Ltd. | Slow Strain Stress Rate Testing What is Slow Strain Rate Testing (SSRT)? Slow strain rate testi... |
 |
Hydraulic Universal Testing Machine | Seller: Beijing United Test Co., Ltd. | Hydraulic Universal Testing Machine Hydraulic universal testing machineis a multifunctional tool... |
 |
Electromechanical Universal Testing machine | Seller: Beijing United Test Co., Ltd. | Electromechanical Universal Testing machine Auniversal testing machine(UTM), also known as a uni... |
