Research on Rolling Process of Q460E Plate
Author of the article:PENG Kewu;DONG Zhongqi;MA Heli;YIN Xueliang;GONG Changwei
Author's Workplace：School of Metallurgy Engineering,Liaoning Institute of Science and Technology,Benxi 117004,China;Department of Materials Engineering,Hebei College of Indus tay and Technology,Shijiazhuang 050000,China
Key Words：Q460E rolling technology mechanical property
Abstract：
The controlled cooling and rolling process of 3 kinds of Q460 E middle and thick plate was studied. The results show that two stage of preheating and two phase control rolling should be used, the first stage should be in the austenite recrystallization zone rolling, the slab rolling temperature of 1 050~1 100 ℃, under time pressure control rate in more than10%;The second phase should be in the austenite recrystallization zone rolling, a rolling temperature is 950 ℃ or less and finishing temperature is 860~790 ℃, after waiting for temperature cumulative pressure rate is 50% or higher, including a deformation rate 12% or higher;Laminar cooling method is adopted and the steel has good toughness.
