9th ECCC European Continuous Casting Conference – ECCC 2017

**Quality fist is our slogan in EZZ Steel (EZDK), Egypt, so controlling all casting parameters is very important and interesting topic to deal with. EZDK faced a repeated LFC during production different types of steel grade; many actions were taken to decrease defected coils due to LFC appearance. The actions taken LFC were dived as follows: 1. Process parameters control by casting with constant speed according steel grade and width and also controlling super heat to be within limit values with constant secondary cooling water and so mold cooling water values, controlling taper and heat flux. 2. Steel grade design was done by reviewing all steel grades according to carbon equivalent and ferrite potential to be far away from Peritectic area and decrease possibility of LFC. 3. Mold workshop activates including casting with the same mold 22 heats only and then manual grinding was done in mold workshop to ensure no brass formation in the mold, Dye penetrate test is done after mold grinding, hardness test was done before and after copperplate machining. All above actions decrease LFC % from 2% to 0.03%during 2016 which increase plant quality yield. This topic is considered as practical and perfect good study to increase quality of slab product without any investment and these actions could by applied at any plant around the world.