| 摘要 |
PURPOSE:To prevent edge cracking during hot rolling in the manufacture of the titled coil by hot rolling an ingot or a continuously cast slab or an austenitic stainless steel having a two-phase structure under specified conditions and by soaking the resulting slab. CONSTITUTION:An ingot or a slab of an austenitic stainless steel having a two- phase structure contg. >=10% delta-ferrite phase in a cast state is manufactured by an ingot making method or a continuous casting method, and it is hot rolled to manufacture a hot coil. At this time, the ingot or the continuously cast slab is hot worked at >=5% total draft prior to conventional slab heating and hot rolling. The resulting slab is soaked at 1,000-1,300 deg.C for 2-30hr. |
