Preparation method of medium-thickness plate product

• Main Authors: WANG SHENGRONG, GAO XIAOYONG, TIAN ZHIHONG, ZHOU DEGUANG, HE YUANCHUN, WANG DONGZHU, WANG GENJI, MA CHANGWEN, WANG KAIKAI, LU SHIPING, MA LONGTENG, XU HAIWEI, WANG YANFENG, WANG XIAOYONG, DI GUOBIAO, XU CANGWEN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention relates to the technical field of medium-thickness plate production, in particular to a preparation method of a medium-thickness plate product. The method comprises the following steps: carrying out rough rolling on a plate blank to obtain an intermediate blank; the intermediate billet is subjected to first cooling and finish rolling, the reduction rate of each pass of finish rolling and the dephosphorization frequency of finish rolling are controlled, and a first steel plate is obtained; the first steel plate is pre-straightened, and then second cooling is conducted under the condition of the set cooling rate, so that the final cooling temperature of the first steel plate subjected to second cooling reaches the target temperature; and carrying out hot straightening on the first steel plate subjected to the second cooling to obtain a medium-thickness plate product. The technical problems that an existing medium-thickness plate product is poor in surface quality and poor in plate shape are solved