Hot working method of niobium-containing heat-resistant austenitic stainless steel continuous casting square billet straight rolling round steel

• Main Authors: YAN SHICAI, WANG QI, CHEN CHAO, FANG XUDONG, SHI ZHIJIE, CHANG XIAOBAO
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a hot working method of niobium-containing heat-resistant austenitic stainless steel continuous casting square billet straight rolling round steel. The hot working method of the niobium-containing heat-resistant austenitic stainless steel continuous casting square billet straight-rolled round steel comprises the steps of smelting, billet casting, heating in a heating furnace and rolling. The niobium-containing heat-resistant austenitic stainless steel comprises the following chemical components in percentage by mass: 0.07 to 0.13 percent of C, less than or equal to 0.30 percent of Si, less than or equal to 1.00 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.010 percent of S, 17.00 to 19.00 percent of Cr, 7.50 to 10.50 percent of Ni, 0.30 to 0.60 percent of Nb, 2.50 to 3.50 percent of Cu, 0.05 to 0.12 percent of N, 0.003 to 0.030 percent of Al, 0.001 to 0.010 percent of B and the balance of iron and inevitable impurities. By adopting the one-heating pro