Effects of cold rolling on crystallographic texture of oriented silicon steel produced by TSCR

Abstract

The cold rolling textures of oriented silicon steel produced by thin slab casting and rolling (TSCR) were studied in the laboratory. Based on φ2 = 45° sections of the X‐ray orientation distribution functions (ODFs) analysis, the subsurface texture of hot‐rolled sheet consists of ϵ(TD//〈110〉) fibres. The texture of cold‐rolled sheet mainly consists of α. (〈110〉//RD) and γ (〈111〉//ND) fibres, and Goss texture ({110}〈001〉) disappears. The γ‐fibre texture is clear for total reductions between 58% and 85%. The highest {111}〈112〉 orientation density of 6·6 can be obtained in one‐stage cold rolling by a two‐roller mill with Φ160 mm roller. When cold rolled to 1·0 mm by a two‐roller mill with Φ160 mm roller, then to 0·35 mm by a four‐roller mill with Φ90 mm working roller, this value decreases to as low as 2·8.