Ultra Fast Cooling System for the Products of Hot Flat Rolling

abstractcooling system for hot flat rolling, UFC (ultra fast cooling system), was described. It makes the cooling water with pressure come out from a small hole, and the steam film between the water and stock can be broken in a big scale. The cooling rate for hot strip can be over 300℃/s. The mechanism of UFC was discussed and the arrangement types of UFC on the production line were described. Finally some of the application examples for developing new steel grades like IF, DP,TRIP and so on were introduced.