BLOOMING OF HIGH CARBON CHROMIUMMNICKEL STEEL

摘要

PURPOSE:To reduce the cracks generating at the blooming, by applying more than one time of large reduction while the temperature of the steel ingot is in the range of 1300 - 1150 deg.C, when the tube is produced by hot extrusion from the steel of the high carbon N-Cr heat-resisting steel having remarkably poor workability.