wanhaorefractory

  1. Mechanical reasons of sliding nozzle When the static pressure of the molten steel is greater than the surface pressure of the slide gate plate , a gap occurs between the slide gate plates , which causes steel leakage between the slide gate plates during the pouring process. 2. Operation and installation reasons of slide gate plate (1) The installation surface of slide gate plate is not cleaned, or too much refractory mud is used when installing the upper nozzle; (2) The surface pressure of the slide gate plate is not enough; 3. The quality reason of the slide gate plate (1) The material of the slide gate plate cannot meet the steel casting requirements of the steel grade; (2) Cracks are generated during the use of the slide gate plate and are abnormally enlarged. 4. The operation reasons of steel casting When the nozzle can not be automatically poured, it needs to be burnt with oxygen. If the slide gate plate is not fully opened, it will be burnt with oxygen, which...

1.Before installing the upper steel ladle, first check the use of the water block brick. When the pit or crack occurs, use the repair refractory material to repair it, and then proceed to the next step. 2. Take the water pipe test, check the gap between the nozzle brick and the brick and the positioning of the nozzle brick. It is forbidden to manually remove the head of the water inlet and install it. 3. After checking the appropriate, remove the nozzle brick and apply refractory mud evenly on the outer wall of the upper nozzle brick. The thickness of the refractory mud is controlled at about 10mm (according to the actual clearance). When the gap between the nozzle and the brick is large, the asbestos cloth can be used. The head of the nozzle is evenly wound separately. 4. When installing the water inlet, the nozzle brick should be smoothly fed into the brick. During operation, avoid the gap in the lower part of the nozzle brick. 5. The water inlet must be re...