Control process for improving flaw detection qualification rate of moderately thick plates

The invention discloses a control process for improving the flaw detection qualification rate of moderately thick plates, and relates to the technical field of iron and steel smelting. Blanks treatedthrough a vacuum process are mainly required for stack cooling of steel grades, the stack cooling time of pipeline steel blanks are required to be longer than or equal to 48 hours, the surface qualityis controllable, the steel grades are subjected to hot transferring and hot charging after being vacuumed, and the stack cooling time is shorter than or equal to 24 hours; and for non-vacuum processblanks, the rolling thickness of a flaw detection steel plate is larger than or equal to16 mm, and the blank stack cooling time is longer than or equal to 48 hours. The control process provided by theinvention significantly improves the qualification rate of the flaw detection steel plate in a coil factory, is low in implementation difficulty, does not need additional cost investment, and is obvious in gain effect. 本发明公开了一种