A633GrC steel plate for engineering equipment pull-shovel support seat and production method thereof

The invention discloses the A633GrC steel plate for an engineering equipment pull-shovel support seat and a production method thereof. The steel plate comprises the following chemical components of, in percentage by mass, 0.18%-0.23% of C, 0.15%-0.50% of Si, 1.40%-1.60% of Mn, less than or equal to 0.015% of P, less than or equal to 0.010% of S, 0.030%-0.070% of Nb, 0.025%-0.050% of Alt and the balance Fe and inevitable impurities. The production method comprises the steps of blank heating, blank rolling and steel plate heat treatment process. According to the A633GrC steel plate for the engineering equipment pull-shovel support seat and the production method thereof, through reasonable chemical component design matched with a proper rolling and heat treatment process, the A633GrC steel plate with the thickness of 10 mm-230 mm for the engineering equipment pull-shovel support seat is successfully prepared, and all mechanical property indexes of the A633GrC steel plate meet the standardof the A633GrC steel pla