Researching on Rolling Technology of Q460E Plate

The production process of 3 kinds of Q460E medium and heavy plate produced was studied by controlled cooling rolling process. Results show: that were used in two stage preheating and two stage controlled rolling. The first stage is rolling in the austenite recrystallization zone, and the temperature of the billet is 1050 to 1100 °C, and the reduction rate is more than 10%; The second stage is rolling in austenite non recrystallization, the rolling temperature is less than or equal to 950 °C, the finishing temperature is 860 to 790 °C, until the temperature after the cumulative reduction ratio is more than 50%, more than 12% times the rate of deformation; The laminar cooling is used, so that the steel has good toughness (paper)