| 摘要 |
A first pair of rolls preferably of unequal diameter and grooved in a manner to change the cross-sectional configuration of a bar of non-ferrous metal delivered from a continuous casting machine, from a generally trapezoidal section of substantial depth to a wider flattened less asymmetrical section, flat on both sides or flat on one side and concave on the other, and a second pair of rolls having concave grooves which will reduce the flattened bar delivered by the first pair of rolls to a generally symmetrical bar. The successive passes effectively carry out a method of operation which works the loose structure of the continuously cast bar into a more homogeneous fibrous structure. |
