Method for improving post-rolling cooling temperature precision of bainite steel
The invention belongs to the technical field of steel rolling production and cooling and provides a method for improving post-rolling cooling temperature precision of bainite steel. The method is mainly applied to medium-thick plate production lines. The method comprises the specific technological p...
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| creator | JIANG HAITAO CHEN YULAI LI XIAOZHAN ZHANG YONGJUN YU WEI MI ZHENLI YIN SHI JING LIANG LIU TAO |
| description | The invention belongs to the technical field of steel rolling production and cooling and provides a method for improving post-rolling cooling temperature precision of bainite steel. The method is mainly applied to medium-thick plate production lines. The method comprises the specific technological process that steel plates with the thickness being 6-80 mm obtained after finish rolling are conveyedto a post-rolling cooling area by a conveying roller bed, the steel plates at the temperature of 720-900 DEG C are rapidly cooled to 250-600 DEG C, and after cooling is completed, the steel plates pass through a straightening machine and are conveyed to a cooling bed. A method of varying the heat exchange coefficient in the high-temperature, medium-temperature and low-temperature cooling processof the bainite steel is adopted, so that the problem that precision is poor when a traditional single heat exchange coefficient is adopted is solved. A method of partitioning a static model sheet according to the water tempera |
| format | Patent |
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The method is mainly applied to medium-thick plate production lines. The method comprises the specific technological process that steel plates with the thickness being 6-80 mm obtained after finish rolling are conveyedto a post-rolling cooling area by a conveying roller bed, the steel plates at the temperature of 720-900 DEG C are rapidly cooled to 250-600 DEG C, and after cooling is completed, the steel plates pass through a straightening machine and are conveyed to a cooling bed. A method of varying the heat exchange coefficient in the high-temperature, medium-temperature and low-temperature cooling processof the bainite steel is adopted, so that the problem that precision is poor when a traditional single heat exchange coefficient is adopted is solved. 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The method is mainly applied to medium-thick plate production lines. The method comprises the specific technological process that steel plates with the thickness being 6-80 mm obtained after finish rolling are conveyedto a post-rolling cooling area by a conveying roller bed, the steel plates at the temperature of 720-900 DEG C are rapidly cooled to 250-600 DEG C, and after cooling is completed, the steel plates pass through a straightening machine and are conveyed to a cooling bed. A method of varying the heat exchange coefficient in the high-temperature, medium-temperature and low-temperature cooling processof the bainite steel is adopted, so that the problem that precision is poor when a traditional single heat exchange coefficient is adopted is solved. 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| subjects | MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING |
| title | Method for improving post-rolling cooling temperature precision of bainite steel |
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