Cleaning apparatus for metal products

By combining the LIBS system with a gaseous hydrogen detection device, precise control of the chemical pickling process is achieved, solving the problem of inaccurate parameter adjustment in existing technologies, improving production efficiency and product quality, and adapting to changes in the composition of different steel grades and oxides.

CN117413089BActive Publication Date: 2026-07-21DANIELI & C OFFICINE MECCANICHE SPA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DANIELI & C OFFICINE MECCANICHE SPA
Filing Date
2022-04-07
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies make it difficult to precisely adjust chemical pickling parameters, leading to over- or under-adjustment, which affects production efficiency and product quality, especially when dealing with different steel grades and complex oxide compositions.

Method used

The system combines laser-induced breakdown spectroscopy (LIBS) with a gaseous hydrogen detection device to measure the oxide layer thickness and composition in real time. The pickling parameters are automatically adjusted by the processing unit to optimize the pickling process.

Benefits of technology

It achieves precise control over the chemical pickling process, maximizes production capacity, reduces material and energy consumption, improves product quality, and adapts to flexible reaction kinetic changes of different products.

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Abstract

A cleaning plant for hot-rolled metal strips having a surface oxide layer, the plant comprising an unwinding device (1) for unwinding at least one roll of rolled strip material and a pickling device (3) for pickling the rolled strip material; wherein a measuring device (11) for measuring the thickness of the surface oxide layer is provided, which is arranged between the unwinding device and the pickling device; and wherein a gaseous hydrogen detection device (12) is provided to detect the presence of gaseous hydrogen in the fumes produced by the pickling device. A corresponding cleaning method is also claimed.
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