Cleaning plant for metal products
AssigneeDanieli & C. Officine Meccaniche SpA
InventorsLuciano Vignolo, Alessandra Primavera, Emanuele Trucillo
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Abstract
A cleaning plant for hot-rolled metal strips provided with a surface oxide layer, the plant comprising unwinding means for unwinding at least one coil of rolled strip and pickling means for pickling said rolled strip; wherein there are provided measuring means for measuring the thickness of the surface oxide layer, arranged between said unwinding means and said pickling means; and wherein gaseous hydrogen detection means are provided to detect the presence of gaseous hydrogen in fumes produced by said pickling means. A corresponding cleaning method is also claimed.
Claims20
A cleaning plant for cleaning rolled metal strips provided with a superficial layer of oxide, the plant comprising
- unwinding means for unwinding at least one coil of rolled strip;
- chemical pickling means for pickling said rolled strip;
- measuring means for measuring a thickness of the superficial layer of oxide, arranged between said unwinding means and said chemical pickling means;
- wherein said measuring means comprise at least one laser source cooperating with an optical fiber spectrometer, defining a Laser-Induced Breakdown Spectroscopy (LIBS) system also adapted to analyze an oxide composition;
- wherein gaseous hydrogen detection means are provided to detect a presence of gaseous hydrogen in fumes produced by said chemical pickling means;
- and wherein a processing unit is provided, adapted to process data from at least said measuring means and said gaseous hydrogen detection means, and adapted to adjust operating parameters of said chemical pickling means accordingly.
Dependencies are inferred from the claim text.