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Guidelines were to be provided for an increase of the drawing quality of the cold-rolled and annealed ELC and ULC-Ti ferritic steel sheets which is presently limited due to an unfavourable shear texture on the surface of the ferritic hot-strips and an insufficient texture development at mid-thickness. Dynamical strain aging (DSA) has first been analysed, which is a limitating factor for the low temperatures ferritic hot-rolling due to an important increase of the rolling loads. Steel resistance in the ferrite has been expressed as a function of the solute carbon content at the straining temperature. Both ELC and ULC (non IF) grades are not well adapted for rolling at low temperatures in the ferrite. On the contrary ULC-IF(Ti) steel grades are suitable for such low temperature rolling in the absence of DSA. The efficiency of various industrial lubricants has been tested at different temperatures to remove the shear texture from the strips surfaces. As a consequence the compression texture ratio is increased in the upper layers of the strips.

Additional information

Authors: LEROY V, Centre de recherches métallurgiques asbl, Liège (BE);MESSIEN P, Centre de recherches métallurgiques asbl, Liège (BE)
Bibliographic Reference: EUR 16834 FR (1997) 67pp., FS, ECU 11.50
Availability: Available from the (2)
ISBN: ISBN 92-828-1077-1
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