Discussion on pass sequence of reducing and sizing rolling of high-speed wire rod mill;

In order to adapt the demand of the market for bars, The Special Steel Plant of Laigang produces Φ140 and Φ150mm20CrMnTiH bars successfully through optimizing the production process of theΦ650mm×1/Φ550mm×1/Φ550mm×4 semi-continuous rolling mill, the pass sequence and guide fittings.

As a result of the adjustment of the production organizational mode,the Special Steel Plant s semi-continuous rolling line for light section revealed problems such as poor pass sequence sharing,low productivity and quality instability.

Discussion on pass system of roughing mills of continuous bar or wire-rod mill;

Research of the slitting roll finish rolling pass system;

The two-strands slit rolling technology for Φ18mm ribbed bar which was the big specification was designed by this paper according to the real situation of one steel plant’s bar producing line, the pass system and guide unit equipments of slit rolling were chosen and designed in detail.