| 摘要 |
To enable production of wires of various diameters from one round rod material supplied from rough rolling step without necessity of roller change of block mills, which needs long period of time and much labour. <??>In the rolling mill a mini block mill (MBM) is installed between a block mill (BM) and a sizing mill (SM) as a reducer for intermediate rolling. The block mill (BM) is so constructed that it is possible to use both the front group (BM1) and the rear group (BM2) of the rollers, or only the front group by passing the rear group with a dummy past, or to by-pass both the front and the rear groups. The mini block mill (MBM) is shuntable from the pass line. The sizing mill is so constructed to be two sets of rollers (SMI, SM2) that either both the sets may be used, or only one of the sets (SM1) may be used and the other (SM2), by-passed. By choosing combinations of use and non-use of the rollers it is possible to produce wires of various diameters, maximum 19 different diameters, from a round rod material of one diameter. <IMAGE> |
