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Abstract

A study of the strand surface residual enrichment in continuous casting has been undertaken by investigation of specially prepared laboratory castings and samples of commercially produced continuously cast billet. A series of laboratory castings of differing copper and tin contents was prepared using a mould with a detachable front face. After teeming had been completed and a solid steel skin formed, the detachable front wall was removed and the exposed ingot face subjected to various pressurized water or air mist spray regimes to simulate the conditions which occur during the secondary cooling of continuously cast product. Assessment was principally carried out by two techniques: entrapment of the residual enrichment in the scale by low temperature secondary scaling; and dissolution of copper in an ammonium chloride solution after anhydride descaling. Where possible, qualitative optical metallography and hot bend tests were used to supplement the interpretation of these results. A computer model was developed which determined the hypothetical residual layer thickness which would be present at the metal-scale interface of continuously cast product.

Additional information

Authors: LEWIS P, British Steel, Swindon Technology Centre, Rotherham (GB)
Bibliographic Reference: EUR 13942 EN (1997) 92pp., FS, ECU 16.50
Availability: Available from the (2)
ISBN: ISBN 92-828-1482-3
Record Number: 199711683 / Last updated on: 1998-01-06
Category: PUBLICATION
Original language: en
Available languages: en