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In winter, the use and maintenance of refractory castables require special attention because low temperatures may cause damage to the refractory materials. The following are some things to note when using refractory castables in winter.
1. Keep refractory materials dry
In winter, the humidity is high, and refractory materials easily absorb moisture, causing them to lose part of their mechanical strength. At the same time, when the surface of refractory materials is frosted or covered with snow, the wear and corrosion of the materials will also be accelerated. Therefore, when using and storing refractory castables, they need to be placed in a dry and ventilated environment to avoid being affected by moisture and snowfall.
2. Control construction and hardening temperatures
During the construction and hardening process, refractory materials require certain temperature protection measures. Application at temperatures lower than specified for the material will prevent the material from fully reacting, curing, and hardening. On the contrary, if it is applied at a temperature higher than the specified temperature, it will cause cracks and deformation of the material. Therefore, when using refractory castables, it is necessary to strictly follow the construction and hardening temperature requirements in the material instructions.
3. Prevent materials from freezing
In low-temperature environments, refractory castables are easily frozen. Once freezing occurs, the material will become brittle and the surface will crack or break. Therefore, when using refractory castables in winter, care must be taken to maintain the temperature of the material to avoid the effects of freezing. In addition, if refractory materials need to be stored, they should be stored in cold-proof and heat-insulated places such as indoors or underground warehouses.
4. Regular inspection and maintenance
During winter, especially under high loads and long periods of operation, refractory materials can become damaged or worn. Therefore, the equipment needs to be inspected and maintained regularly, and damaged parts should be replaced or repaired promptly to ensure the normal operation of the equipment.
In short, when using refractory castables in winter, special attention needs to be paid to the ambient temperature, recording of construction and hardening temperatures, regular maintenance and inspections, etc., to ensure the use effect and lifespan of refractory materials.
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