Vertical Annealing Furnace Rollers
Vertical annealing furnace rollers are key components in vertical annealing furnaces, primarily used to uniformly and rapidly convey steel strip for annealing within a nitrogen-hydrogen atmosphere at temperatures ranging from 750-950°C. Vertical annealing furnace rollers typically have a large diameter (600-1500mm), with the roller body centrifugally cast, the transition section statically cast, and the shaft head often forged.
The material and structure of vertical annealing furnace rollers vary depending on the specific application. For example, coated rollers are commonly used in vertical annealing furnaces for high-end automotive and home appliance steel, as well as in continuous annealing and galvanizing lines. The surface coating increases the roller's surface hardness, reduces surface scratches, and improves steel quality. Common steel grades include ZG40Cr25Ni20Si2, ZG14Ni32Cr20Nb, and ZG45Ni48Cr28W5Si2.
Applications of Vertical Annealing Furnace Rollers
Vertical annealing furnace rollers are primarily used in vertical annealing furnaces in continuous annealing and galvanizing lines. They transport steel strip evenly and quickly under high temperatures and a protective atmosphere to complete the annealing process.
Maintenance and Care of Vertical Annealing Furnace Rollers
Maintenance and care of vertical annealing furnace rollers requires regular inspection to ensure smooth operation. Furthermore, they require regular lubrication and oiling to maintain smooth operation, and proper cleaning and corrosion protection to extend their service life.