| 摘要 |
<p>An adjustment device is provided for regulating the total degree of drawing in a multi-stand stretch reduction rolling mill for the stretch reduction of tube having a digital unit which calculates intermittently the desired or theoretical stretchings ( lambda theor.) from the entering and exiting wall thicknesses (So, S) and the external diameters (Do,D) of both the actual entering and desired finished tube sections and continuously the actual stretchings ( lambda act.) from the entrance and exit speeds (Vo,V) of the tube, and a regulator adjusting the roll r.p.m.'s as a function of the differences in theoretical and actual stretchings ( DELTA lambda ).</p> |
