Dew point corrosion resistant composition, hot working equipment, and preparation method of dew point corrosion resistant coating

The invention provides a dew point corrosion resistant composition, hot working equipment, and a preparation method of a dew point corrosion resistant coating. The dew point corrosion resistant coating comprises, by weight, 50 to 85 parts of a resin, 20 to 40 parts of a pigment filler, and 0 to 5 parts of an accessory ingredient; wherein the resin comprises petroleum resin and silicone rubber. The dew point corrosion resistant composition is high in adhesive force and elasticity, and is capable of avoiding shedding of the dew point corrosion resistant coating in base material cold and hot alternation process. The viscosity of silicone rubber is relatively high, so that petroleum resin is added so as to realize effective dispersing of the pigment filler; the dew point corrosion resistant coating contains silicone rubber, so that cracking or liquidation of the dew point corrosion resistant coating is not caused at -25 to 230 DEG C, and the elasticity is maintained; at 100 DEG C, the dew point corrosion resistan