Community Research and Development Information Service - CORDIS


This report describes the construction of large-scale laboratory equipment capable of simulating full-scale pickle tank depth. This was used to measure the characteristics of several designs of ultrasonic transducers, designed for up to 1800 mm wide 'beams' of sound, to identify the most suitable design. This was found to be a 1000 mm long round bar horn type. Pickling tests with the preferred design showed some improvements over conventional pickling but these were variable in magnitude.

The final tests were with ultrasonic transducers and turbo pickling nozzles on a pilot, narrow strip pickle line to obtain operating data. These showed that cracking the scale prior to pickling was very important. If the scale was not cracked, improvements of 18% were found with ultrasonics and 32% with turbulent pickling. When the scale was cracked by more than 1% extension, further improvements of up to 5% were found using ultrasonics. The use of turbulence produced an improvement of 13% over the cracked pickling times. .

Additional information

Authors: HOWELLS J N H, British Steel plc, Port Talbot (GB);SUILEN F E, Hoogovens Stael BV, IJmuiden (NL)
Bibliographic Reference: EUR 20079 EN (2002), pp.138. Euro: 20.50
Availability: EUR-OP reference: KI-NA-20079-EN-S. Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-3001-X
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