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US 11,338,341 B2Granted
Cleaning plant for metal products
AssigneeDanieli & C. Officine Meccaniche SpA
InventorsLuciano Vignolo, Alessandra Primavera, Gianfranco Marconi
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Abstract
A 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 and pickling means for pickling said rolled strip; wherein there are provided measuring means for measuring the thickness of the superficial layer of oxide, arranged between said unwinding means and said pickling means. A relating cleaning method is also claimed.
Claims10
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;
- pickling means for pickling said rolled strip;
- measuring means for measuring a thickness of the superficial layer of oxide, said measuring means being arranged between said unwinding means and said pickling means;
- characterized in that said measuring means comprises at least one laser source cooperating with a fiber optic spectrometer, defining a LIBS system (Laser Induced Breakdown Spectroscopy) also adapted to analyze a composition of the oxide and a concentration of constituents of the oxide, said fiber optic spectrometer being adapted to measure a presence of oxygen while a laser of said at least one laser source penetrates the rolled strip towards a non-oxidized base material;
- wherein at least one scale breaking device is provided between the unwinding means and the pickling means;
- wherein there are provided weight sensors to weigh an amount of scales detached from the rolled strip by means of the at least one scale breaking device and suction devices aided by brushing devices, to collect the oxide detached so as to weigh said oxide.
3 more elements
Dependencies are inferred from the claim text.