steel structure and equipment after contact with pouring material surface.doc

Steel structure and equipment after contact with pouring material surface, the floating rust should be removed and sundry. Shall not be arbitrarily change the ratio of castable or optional in blended castable with water or other materials. (2) the key points of technical requirements in construction 1. Stir refractory castable water should use clean water. 2. Pouring with template should have enough stiffness and strength, the mould dimension should be accurate, and should prevent deformation in the process of construction. Template seams should be tight, do not leak slurry. The template anti-sticking measures should be taken. Contact with the castable insulation masonry surfaces, waterproof measures should be taken. 3. The castable forced mixer mixing should be adopted. Mixing time and the amount of liquid should be executed in accordance with the specifications. Change the materials brand, mixer, hopper, weighing container, etc. Shall be rinsed clean. 4. Refractory castable, mixture should be pouring completed in 30 minutes, or according to the specifications requirements within the prescribed period of time after pouring. Initial setting castable shall not be used. 1 P177 5. The overall casting refractory lining expansion joint setting, should according to the design rules. If it had no rules, per metre long lining expansion joint average value, can use the following data.. Clay refractory castable for 4 to 6 mm; High alumina cement refractory castable for 6 to 8 mm; Phosphate fire-resistant rao note material is 6 to 8 mm; Sodium silicate refractory rao note Portland cement refractory material for 4 to 6 mm rao note for 5 to 8 mm. 6. Pouring refractory castable, should be continuous. In the first layer castable, before initial setting should be the first layer castable after pouring; Intermittent more than the initial setting time, shall be handled according to the requirements of construction joints. Construction joints should be stay in the same row an