Measures of changing magnesium dry material tundish in continuous casting workshop
1. The situation before switching Due to the history and production status and other reasons, the tundish working layer used in the production of Tanggang No. 2 Steel mill is mostly silicon plate, only one continuous casting machine uses part of magnesium coating, the average life of the tundish is only 6 ~ 7h, the operation rate of the continuous casting machine is only about 70%. Because the life of tundish is too low, and the amount of head and tail billet and tundish is too large, the consumption of steel material is too high, the average consumption of steel material is about 12kg. Moreover, due to the poor sintering effect and sintering strength of the silicon plate, the pollution of the silicon plate to the molten steel is too large, which can not meet the requirements of casting purity. 2. Use specific measures and effects (1) Improve and optimize the materials of the intermediate working layer Tundish working layer is the key point of tundish. When molt...