wanhaorefractory

  Different types of tundish 1. High temperature tundish The tundish is set up for a specific metallurgical process, the lining is made of magnesia brick, and it is preheated to about 1500°C. 2. Hot tundish That is, a kind of tundish commonly used in steel plants at present, which uses fired bricks or unfired bricks or castables as the lining of the tundish. Before pouring, it should be preheated to 800～1100℃. 3. Cold tundish The insulation board is used as the lining, which can be used without preheating before pouring. As for the choice of which tundish type and which material is better for the lining, it depends on the cast steel, smelting method, baking conditions and the ability of the steel plant itself. The tundish lining is mainly composed of the following parts: (1) Insulation layer (10~30mm) This layer is next to the steel shell of the tundish, and its material is usually asbestos board, insulation brick or lightweight castable. (2) P...

 The tundish is an important intermediate equipment that connects steelmaking and continuous casting in the steelmaking production process. It can store molten steel, distribute molten steel, ensure continuous pouring, reduce pressure and stabilize flow, promote the floating and removal of non-metallic inclusions, and uniform molten steel composition and temperature. And many other metallurgical functions. The normal operation of the tundish directly affects the antegrade of the continuous casting process and the final quality of the slab. However, due to the particularity of the working conditions of the tundish, not only the high-temperature molten metal is constantly eroded, but also experienced a sudden drop in temperature, which has a great impact on the life of the tundish. Cause Analysis 1.The difference in the composition of different dry ingredients The two dry aggregates use different grades of sintered magnesia or fused magnesia. When baking at low temper...