This article's table of contents introduction:
- The Core Application: What are you moving?
- Material Identification: "Nickel Iron" vs. "Ni-Hard" vs. "Stainless"
- The Component: What part of the fan is "Nickel Iron"?
- Specific Fan Types for Kilns & Power Plants
- Global Manufacturers to Contact
- If you are looking for a specific product (e.g., to buy a part or repair):
It appears you are searching for a specific type of industrial fan, combining several key characteristics: Heavy Duty, Wear Resistant, made of Nickel Iron (alloy), and used in Kiln and Power Plant applications.
This is a highly specialized piece of equipment, and it is important to clarify the exact terminology, as "Nickel Iron" typically refers to a specific alloy family that is not the standard material for most large industrial fan wheels.
Here is a breakdown of what you are likely describing, the common industry terminology, and how to find the correct product.
The Core Application: What are you moving?
The need for "Nickel Iron" and "Wear Resistant" suggests the fan is handling one of two things:
- Hot, Abrasive Gas: (e.g., in a Cement Kiln or a Coal-Fired Power Plant) where the gas contains fly ash, clinker dust, or raw meal. This requires extreme erosion resistance.
- High-Temperature Gas with Erosion: (e.g., Induced Draft (ID) fans in a power plant or process kiln) where the combination of heat and particulate matter destroys standard steel.
Material Identification: "Nickel Iron" vs. "Ni-Hard" vs. "Stainless"
Your search for "Nickel Iron" is almost certainly referring to Ni-Hard (ASTM A532).
- Ni-Hard is a family of white cast irons alloyed with nickel (Ni) and chromium (Cr) .
- Why it's used: It is extremely hard (typically 550-650 Brinell) and provides outstanding resistance to abrasion and erosion.
- The Trade-off: It is very brittle. It cannot handle high impact or severe thermal shock. It is prone to cracking.
- Common Industry Term: You will rarely find a "Nickel Iron Fan" listed in a catalog. It is sold as a "Ni-Hard Fan Wheel" or "Abrasion Resistant Fan Wheel."
Important Distinction:
- Do you need erosion resistance or corrosion resistance?
- Nickel Iron / Ni-Hard = Best for Erosion (solid particle wear).
- Stainless Steel (e.g., 310S, 253MA, Inconel) = Best for Corrosion + High Temperature (acidic gases, thermal stability).
If you need both: Some manufacturers use Stainless Steel (for strength at temp) with hardfacing weld overlay (e.g., Stellite, Tungsten Carbide) on the leading edges.
The Component: What part of the fan is "Nickel Iron"?
In a Heavy Duty Industrial Fan, the "Nickel Iron" (Ni-Hard) is most commonly used for:
- The Impeller (Fan Wheel) Blades:
- Fabricated Construction: Heavy steel plate (e.g., HARDOX, AR400) with Ni-Hard strips welded onto the leading edge (the part that hits the dust).
- Cast Construction: The entire blade is a casting of Ni-Hard. This is the most durable but heaviest and most expensive option.
- The Wear Liners:
Removable plates inside the fan housing (volute) made of Ni-Hard. These are sacrificial and replaceable. The housing itself is usually heavy steel.
- The Shaft Sleeves:
Where the shaft passes through the housing, a Ni-Hard sleeve protects the shaft from abrasive dust.
Specific Fan Types for Kilns & Power Plants
Given the context ("Kiln Power Plant Fan"), you are likely looking for one of these specific types:
| Fan Type | Application | Why Nickel Iron is Used | Key Design Feature |
|---|---|---|---|
| Induced Draft (ID) Fan | Pulls hot, dirty exhaust gas through the kiln or boiler. | Fly ash is extremely abrasive. Ni-Hard resists erosion, extending fan life from months to years. | Radial or Paddle Wheel design. Thick, heavy blades. Often has a wear-back plate. |
| Primary Air (PA) Fan | Supplies air to pulverize and transport coal. | Coal dust is abrasive. Ni-Hard or hardfacing is used on the impeller. | Airfoil or Radial Tip blades. |
| Cement Kiln Fan (Rear/Clinker Cooler) | Handles hot air with clinker dust. | Extremely hot (+200°C / 400°F) and highly abrasive. Ni-Hard is standard for the wheel. | Radial Blade with high temperature shaft cooling. |
Global Manufacturers to Contact
Do not search for "Nickel Iron fan" on Amazon. You need to contact Original Equipment Manufacturers (OEMs) of heavy industrial fans. Ask for their "Abrasion Resistant / Ni-Hard / Erosion Resistant Fan" product line.
Top Global OEMs:
- Howden: (Global leader, "Ruggedized" fan range).
- TLT-Babcock: (Large power plant ID fans).
- New York Blower (NYB): (Has a "DH" series for dirty gas).
- Robinson Fans: (Specializes in custom heavy-duty fans for steel, cement, power).
- Aerzen / Delta Blower: (Large process fans).
- FlaktGroup / Woods: (European industrial fans).
- Greenheck: (Industrial division).
- Twin City Fan: (Custom heavy duty).
What to ask them exactly:
"I need a heavy-duty induced draft / kiln exhaust fan with a radial blade impeller. The gas stream contains high levels of abrasive dust. I require Ni-Hard (ASTM A532 Class I) strips on the leading edges of the blades and Ni-Hard wear liners inside the housing. The operating temperature is [e.g., 350°F / 175°C]."
If you are looking for a specific product (e.g., to buy a part or repair):
- Part Number: You will need the OEM's part number (e.g., "Howden 12-3456-78 Impeller").
- Serial Number: On the fan nameplate.
- Drawing: You will need the OEM's engineering drawing.
Summary & Recommendation:
You are describing a highly specialized, custom-engineered industrial fan. "Nickel Iron" is the material (Ni-Hard) for the wear components (blades and liners) of a radial-blade ID or Kiln exhaust fan.
Do not buy a generic fan. Contact a heavy industrial fan OEM like Robinson Fans, Howden, or TLT-Babcock. Tell them you need a fan for fly ash / clinker dust and request Ni-Hard impeller construction.
Are you looking for the fan itself? Or are you looking for replacement spare parts (impeller, wear liners) for an existing fan? Please provide the manufacturer and model number if possible.
