Product category:
Metals and Minerals Processing News
News Release from: Metrohm UK | Subject: Steel etching
Edited by the Processingtalk Editorial
Team on 04 June 2007
Monitoring of acid etching baths for
steels
Acid etching baths are used for oxide removal and cleaning of the surface of different types of steel: the Fe2+/Fe3+ and free acid/total acid ratios must be maintained within certain limits
This bulletin describes the monitoring of an etching bath in the steel industry The Metrohm ProcessLab offers a solution that automatically evaluates the desired bath parameters (free acid, total acid, Fe2+ and Fe3+)
This article was originally published on Processingtalk on 2 Jul 2008 at 8.00am (UK)
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Tighter process control in acid pickling baths
Online ion chromatography from Metrohm has enabled tighter process control of acid pickling baths, as the final cleaning stage prior to metal plating
The quality of the end products depends directly on the correct composition of the etching bath.
Keeping these parameters in an optimum range results in a permanently higher quality and at the same time lowers costs due to lower reagent consumptions.
Auxiliary substances like hydrogen peroxide are added to influence the Fe2+/Fe3+ ratio, which is responsible for a constant activity of the bath.
Due to the flexibility offered by ProcessLab the determination of hydrogen peroxide can be integrated very easily.
Features/general information.
All 4 parameters in one system.
Easy to operate by semi-skilled staff.
Direct feedback of the measured results to the process control system.
Can be used for different baths without additional costs.
Additional parameters can be measured at minimum costs (e.g H2O2).
The method can be used in the lab as well. Request a free brochure from Metrohm UK ...
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