Centrifugally Cast Furnace Rollers for High-Temperature Applications
Product Description
Furnace rollers, also known as hearth rollers, operate in one of the most punishing industrial environments imaginable: the inside of a steel reheating or heat treatment furnace. They must reliably convey steel slabs, billets, and bars at temperatures often exceeding 1100°C (2012°F), withstanding constant thermal stress and corrosive atmospheres.
Yile Machinery specializes in the production of high-performance, centrifugally cast furnace rollers designed for maximum service life and reliability under extreme heat.
The Challenge: Resisting Creep and Oxidation at Extreme Temperatures
Standard steel or alloy rollers will quickly fail in a reheating furnace. The intense heat causes two primary problems:
Creep: The material loses its strength and begins to permanently sag or bend under the weight of the product it is carrying.
Oxidation: The high-temperature, oxygen-rich atmosphere rapidly corrodes and degrades the roller surface, leading to scaling and premature failure.
Our furnace rollers are engineered specifically to combat these issues through advanced materials and manufacturing.
The Superior Solution: Centrifugal Casting with Heat-Resistant Superalloys
To achieve the required performance, we manufacture our roller barrels using a centrifugal casting process. Molten, heat-resistant superalloy is poured into a rotating mold, where immense G-forces create a final product that is:
Extremely Dense & Uniform: The process forces out impurities and eliminates defects like porosity and gas pockets that are common in static castings.
Superior in Strength: The resulting fine-grained microstructure provides exceptional strength and, most importantly, high creep resistance at elevated temperatures.
We use a range of specialized heat-resistant alloys tailored to your specific operating temperature and furnace atmosphere:
Nickel-Chromium Alloys (e.g., HK40, 1.4848, 1.4852): Excellent strength and oxidation resistance for a wide range of furnace applications.
Cobalt-Base Alloys (e.g., Co50): Offer superior strength and creep resistance at the most extreme temperatures.
Key Features & Technical Specifications
Manufacturing Process: Roller barrel is centrifugally cast; shafts/trunnions are forged or cast and welded to the barrel.
Materials: A wide range of heat-resistant superalloys, including Cr-Ni and Cr-Ni-Co series.
Assembly: Supplied as complete, balanced assemblies ready for installation.
Key Properties: High creep strength, excellent resistance to oxidation and thermal shock.
Machining: All rollers are precision machined and dynamically balanced for smooth, vibration-free operation.
Applications in Steel Mills & Heat Treatment
Our furnace rollers are essential components for:
Continuous Reheating Furnaces (Walking Beam, Pusher Type, Roller Hearth)
Heat Treatment & Annealing Lines
Galvanizing Lines
For conveying slabs, billets, blooms, bars, and plates.
Get a Quote for High-Temperature Furnace Rollers
Maximize the uptime of your furnace. Provide us with your roll dimensions, furnace operating temperature, and material specifications to receive a detailed quotation for long-lasting furnace rollers.