AMEPA chronology - Electromagnetic Slag Detection
Service - Electromagnetic Slag Detection
Field of application - Electromagnetic Slag Detection
Distribution partner - Electromagnetic Slag Detection
References - Electromagnetic Slag Detection
Health and safety system - Electromagnetic Slag Detection
CFM - Coal Flow Measurement
ESD - Electromagnetic Slag Detection
OFIS - Oil Film Thickness Measurement
OFM - Online Oil Film Measurement
RSD - Residual Steel Detection
SRM - Surface Roughness Measurement
TSD - Thermographic Slag Detection
MFM - Mould Flow Measurement
SFM - Ladle Purging Monitor
Slagmeter - Slag Thickness Measuring
Wavisurf - Online Waviness Measurement

If steel of high quality has to be produced, the most important prerequisite is a slag-free pouring of steel. AMEPA is the worldwide market leader with its electromagnetic slag detection system ESD for ladles with more than 2000 vessels equipped with sensors.



In the production process, steel is poured several times from one vessel into another. But the slag which arises during each step of the process must not be transferred into the next vessel. Especially in the production of high quality steels carried over slag creates a very serious problem.

The electromagnetic detection system developed by AMEPA solves this problem successfully. There are already 250 systems installed worlwide with over 2000 vessels equipped with sensors and more than 370.000.000 tons of steel are supervised by these systems annually. This makes the AMEPA slag detection systems a worldwide standard and AMEPA the world leader in this technology.

In the steel plant environment all measurement equipment and sensors are expected to meet the highest demands in terms of reliability and robustness. The sensors, for example, must work in temperatures of up to 800° C.

The success on the market of this technology proves that AMEPA has successfully met these challenges.


The Measuring and Sensor Principle

An alternating current is fed into concentrically arranged coils of the sensor, thereby inducing eddy currents in the melt as it flows out. If there is any slag in the melt, the conductivity of the melt changes and the electromagnetic field increases slightly. This change is measured by a secondary coil system.

As a result of the concentric design of the sensor, a maximum field is generated in the melt and a strong signal is achieved. In addition, the measuring results are independent of the pouring velocity of the melt.

Customer specific sensors have been developed for the ladle and the tundish: They meet the customers‘ different requirements concerning easy installation and durability.

The AMEPA sensor consists of coils in a rigid steel cassette system that can easily be mounted or replaced. Usually there is no need to make major alterations to the ladle or furnace. Many users are able to change the sensor between two heats.


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