Cr-Mo steel ingot directly rolling forming method

• Main Authors: YIN WEIJIANG, ZHAO GUOCHANG, NIU HONGXING, YUAN JINCHENG, GU ZIYOU, WU YANYANG, WANG DONGYANG, DENG JIANJUN, LI YANGBING, HOU JINGCHAO
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2019
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention discloses a Cr-Mo steel ingot directly rolling forming method. The method comprises the processes that the stacking and slow cooling is carried out after steel ingot is subjected to offline de-molding, the steel ingot with temperature is cleaned, the steel ingot with temperature is shove charging, the steel ingot is is subjected to rolling; the method comprises the mainly following steps that specially, the stacking and slow cooling process is carried out after the steel ingot is subjected to offline de-molding, the stacking and slow cooling treatment is carried out, the stack cooling temperature is 44-48 hours, the stacking temperature is 750 DEG C -850 DEG C, and the destacking temperature is 300 DEG C-350 DEG C; according to the steel ingot rolling process, the starting temperature of the rolling is 1100 DEG C-1150 DEG C, the finishing temperature of the rolling is 880 DEG C-930 DEG C, and the rolling pass average rolling reduction is 20mm-30mm. The steel plate produced by the Cr-Mo steel ing