Industrial High-temperature Centrifugal Fan

In industrial processes such as cement rotary kilns, metallurgical blast furnaces, and chemical cracking furnaces, fans need to convey not room-temperature air but high-temperature gases of 250°C or even 500°C+. Ordinary fans at such temperatures suffer rapid impeller material strength decay, casing thermal deformation, and bearing lubrication failure - before long, severe faults such as increased vibration, bearing burnout, or even impeller deformation occur. Our factory's Industrial high-temperature centrifugal fan is specifically designed for conveying high-temperature gases of 250–500°C, with core technology addressing material strength decay, thermal deformation, thermal expansion differences, and lubrication challenges at high temperatures, ensuring structural integrity and operational reliability in harsh thermal environments.

The Industrial high-temperature centrifugal fan adopts all-steel construction with key components selected from heat-resistant alloy steel. The impeller is the core, usually welded from 15Mo3, SS310, or higher-grade heat-resistant stainless steel, and undergoes stress-relief heat treatment after welding to prevent deformation and cracking at high temperatures. The casing interior is usually fitted with insulation layers, with external stiffeners to control thermal deformation. The most critical bearing housing must be effectively insulated from the high-temperature casing, usually adopting a double-wall water-cooled structure or large cooling fins, equipped with a forced lubrication system to ensure bearing temperature always remains below 70°C. The main shaft is usually fitted with expansion joints, allowing axial expansion under hot conditions to avoid shaft bending due to thermal stress. Our factory's technical team performs dedicated thermodynamic calculations and material selection based on customer medium temperature, flow, and pressure parameters, ensuring every Industrial high-temperature centrifugal fan operates reliably long-term at the customer's actual high-temperature conditions - rather than simply replacing the motor on a room-temperature fan and selling it as a high-temperature fan.

• Kiln head and kiln tail high-temperature fans for cement rotary kilns
• Blast furnace hot air and sinter machine high-temperature flue gas conveyance in metallurgy
• High-temperature gas conveyance in chemical cracking furnaces and heating furnaces
• Boiler induced draft fans and primary air fans in thermal power plants
• High-temperature flue gas extraction in glass melting furnaces and ceramic kilns
• High-temperature gas conveyance in waste heat recovery systems

Our factory has 25 years focused on industrial fan manufacturing, with high-temperature fans as a core technology product line. The factory covers over 10,000 square meters with over 100 employees, possessing professional capabilities including heat-resistant steel welding, CNC machining, and dynamic balance testing, equipped with dynamic balancing machines, CNC laser cutting machines, and CNC spinning machines, with monthly production capacity of 5 million RMB. We have accumulated high-temperature fan application experience in industries including cement, metallurgy, power, and chemicals, and can provide complete solutions from material selection to cooling system design. Products cover the nation, with some exported with complete equipment sets.

The quality of high-temperature fans directly relates to production line safety, so we enforce strict manufacturing inspection. Heat-resistant steel materials are verified against material certificates and heat numbers upon warehousing, with key components undergoing spectral analysis verification. Welding is performed by certified welders, with welds undergoing penetrant or radiographic testing. After welding, impellers undergo stress-relief heat treatment, then high-speed dynamic balancing with accuracy no lower than Grade G2.5. Bearing housings undergo hydraulic pressure testing, with water cooling systems undergoing sealing testing. After assembly, no-load running of no less than 2 hours monitors bearing temperature rise and vibration. Every product undergoes 100% inspection before shipping, accompanied by material certificates and inspection records.

One-year warranty; manufacturing defects within the warranty period are repaired or replaced free of charge. Dedicated team responds within 24 hours and provides solutions within 48 hours. High-temperature fan customers enjoy regular follow-up visits to inspect impeller corrosion and bearing status, identifying potential issues proactively. Beyond the warranty period, lifetime cost-price repair is offered with supply of heat-resistant impellers, bearing housings, and seals. On-site installation guidance and operator training are available to help customers' O&M teams master high-temperature fan daily inspection and maintenance essentials.

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