Nickel-series low-temperature steel and production method thereof

• Main Authors: ZHENG TUANXING, LI BAN, WANG YANGFA, WU XIANHUA, CHEN HAIMING, ZHA ANHONG, ZHOU HANQUAN, ZHENG JIAXIAN, ZHANG XIN, CHEN ZUZHENG, HU XUEMIN
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• 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; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the technical field of nickel-series low-temperature steel, and particularly relates to nickel-series low-temperature steel and a production method thereof, the production method comprises the steps of rough rolling, intermediate rolling, pre-finish rolling and finish rolling, the temperature of a rolled piece obtained through intermediate rolling is 1020-1050 DEG C, primary through-water cooling is conducted after intermediate rolling, and then the rolled piece enters a slow cooling channel to be naturally cooled till the temperature of the rolled piece entering the pre-finish rolling is 970-1020 DEG C; secondary through-water cooling is carried out after pre-finish rolling, and then the rolled piece enters a slow cooling channel to be naturally cooled until the finish rolling temperature of the rolled piece is 790-930 DEG C; and after finish rolling, through-water cooling is conducted for three times, and then the rolled piece enters a slow cooling channel to be naturally cooled, so