Effect of rolling speed on the exit cross sectional shape in rod rolling process

초록

A rolling speed dependent spread model is proposed for predicting the exit cross sectional shape In oval-round (or round-oval) pass rod rolling process when the rolling speed is very high. The effect of rolling speed on the exit cross sectional shape is measured by performing a four pass continuous high speed (similar to 80m/s) rod rolling test and is described in terms of the spread correction parameter The validity of the model is examined by applying it to rod rolling process at POSCO No. 3 Rod Mill. The cross sectional shapes of workpiece predicted by the proposed model coupled with the surface profile prediction method(6) are in good agreement with those obtained experimentally.

키워드