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  • Development of new chemical and electrochemical procedures for the control of pretreatment section in electrogalvanizing lines of steel sheet for automotive applications: Phase 1


The work carried out is as follows:

- Sampling of industrial batch annealed steel with standard roughness;
- Treatment at laboratory scale of as rolled steel sheet simulating industrial alkaline degreasing baths;
- Measure of interfacial tensions (bath/protective oil);
- Study of influence of interfacial tension on cleaning efficacy;
- Study of the reaction bath/protective oil;
- Measure of alkaline variations on the time of degreasing bath;
- Study of emulsion stability bath/protective oil;
- Surface characterization of steel after degreasing treatment as concerns surface carbon determination;
- Analysis of the iron powder collected from oil and from sheets;
- Set up a laboratory method to evaluate the Zn/Fe adherence;
- Study of influence of pickling on pollution decreasing (iron powder and surface carbon).

The results obtained are presented in this report. this report.

Additional information

Authors: NOVARO E, Centro sviluppo materiali SpA, Roma (IT);PACIELLO M, Centro sviluppo materiali SpA, Roma (IT);ARCHONTIS G, Mirtec SA, Volos (GR)
Bibliographic Reference: EUR 16673 EN (1997) 52pp., FS, ECU 10.00
Availability: Available from the (2)
ISBN: ISBN 92-828-0953-6
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