(1) Check whether the gas, compressed air and industrial electricity are normal, whether there is leakage, and whether all valves are completely closed.

(4) The residue of the permanent lining surface of the tundish, residual steel and other debris must be removed.

2. Construction

(3) Construction starts when the wall temperature is lower than 100 °C. When the temperature is high, it must be cooled by a fan.

(6) Construction wall: After the dry materials packed in the small bag are placed along the various points of the tire, the layers are evenly layered at each point and poured into the gap between the package and the permanent lining, to the position of the mouth, dry material Do not drop too much (less than 300 mm per layer) to avoid segregation of dry materials. Turn on the vibration motor and continue to pour dry material until the dry material fills up. The motor vibration time is generally 5 minutes (depending on the motor excitation strength). For example, if there is a special reason during construction (for example, if a motor suddenly fails to work), it may cause some parts to be difficult to be tapped. It may be temporarily tempered with a stick such as steel brazing, tamping the dry material and appropriately prolonging the vibration time. . Solve problems in time afterwards. Do not pour the ropes and other debris during construction to ensure the safe use of the tundish.

(9) Demoulding: Use the crane to lift the membrane to the designated position. When demoulding, it should be lifted vertically and slowly. Pay attention to the uniform force to prevent damage to the well-constructed lining and produce transverse cracks. Check the thickness and strength of the working lining after demolding, and find the problem in time.

c) When the dry material damage area is large (greater than 0.5m2), it is necessary to re-seat the tire to fill the damaged part with dry material vibrating baking.

(12) Install the brick: remove the pre-buried steel frame and install the brick according to the specified position. The brick is placed in a flat and accurate position. The brick is filled with dry material. Install the nozzle according to the requirements. Dry material can be used around the upper nozzle.