| 摘要 |
A process for manufacturing a walking bar member for continuous casting from an elongated tubular metal blank by heating the blank at a temperature of 550 DEG to 1250 DEG C., subjecting the heated blank to plastic working which achieves a working ratio of up to 65% or a flattening ratio of over 1 but not greater than 3.0 to flatten the blank into a tubular body by compression over the entire length thereof, and machining a surface of the tubular body at the side thereof to be brought into contact with a slab to smooth the surface and provide a reduced wall thickness, the working ratio and the flattening ratio being represented by (D-H)/Dx100 and W/H, respectively, wherein D is the outside diameter of the blank before the plastic working, H is the minor diameter of the tubular body after the plastic working, and W is the major diameter of the tubular body after the plastic working. |
