F. F. Linera

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Measurement of the flatness of cold rolled steel strip or aluminum foil is a vital aspect of production quality control. Cold lamination control based on the results of this measurement crucially affects production efficiency, but further processes can modify this flatness, and it can be even lost when strip becomes cold. We describe a low-cost flatness(More)
We can find many different types of commercial regulators in the market, these devices basically can be divided into two categories according to their operation mode: The first ones modulate the input voltage with PWM (pulse width modulation) to hold the constant voltage in the output necessary to charge the battery. The other ones operate in the MPP(More)
Magnetic contactless speed measurement sensor targets steel industry. Controlling any production line requires the use of many sensors along the line. A basic measurement in steel lines is the determination of the exact linear speed of some portions of the process. This article comments on the complete speed measurement system for steel lines, with a cost(More)
Measuring the flatness of a cold-rolled steel strip or aluminum foil is a vital aspect of production quality control. Cold lamination control based on the results of this measurement crucially affects production efficiency, but further processes can modify flatness, which can be lost when the strip becomes cold. We describe a low-cost flatness measurement(More)
Steel cleanliness is very important prior to any steel coating process. A novel cleanliness sensor for flat steel products has been designed for use on the production line. The sensor is based on the optical reflectivity of dirty steel, which has been analyzed to determine how the incident light beam is dispersed. To design the optical circuit, the effect(More)
This paper shows preliminary results of a project based on a new magnetic contact-less sensor that allows strip speed determination in order to improve the control and quality of annealing and tempering processes in steel industries. The system is based on the measurement of the reactance variation that an inductance based on an amorphous wire core shows in(More)
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