Precision Steel Rollers

The precision rolling mill, through high-precision structural design and advanced surface treatment technology, has become the core component for improving strip quality and production efficiency in the straightening process.

1.High precision sheet and strip production: used in cold rolling and hot rolling processes to process thick plates into thin plates (thickness ≤ 0.2mm) through multiple passes of rolling, meeting high-end demands such as automotive panels and home appliance panels. By controlling the rolling gap through a hydraulic AGC system, the precision of the strip thickness tolerance of ± 0.03mm is achieved, improving the surface quality and dimensional stability of the steel.

2.High strength steel forming: Processing martensitic steel with a tensile strength of over 1500 MPa, used in scenarios such as automotive crash beams and building steel structures.

3.Manufacturing of aluminum foil and copper foil: Rolling ultra-thin aluminum foil with a thickness of 0.005-0.2mm, used in fields such as food packaging and lithium battery current collectors. In copper alloy rolling, precision foil with surface roughness Ra ≤ 0.4 μ m is achieved through multi roll collaborative control, meeting the requirements of electronic circuit substrates.

4.Rolling high-temperature resistant materials such as nickel based alloys and titanium alloys for key components such as aerospace engine blades and nuclear reactor insulation layers.

Cold rolled seamless pipe manufacturing: Stainless steel pipes are processed using a twenty roll precision cold rolling mill with a wall thickness tolerance of ± 0.03mm, and are used in medical devices, precision instruments, and other scenarios.

Roller Type Classification

Selection Suggestions

Key structural parameters: The working layer thickness of the roller body should be ≥ 50mm, and the hardness of the white layer should reach HSD 75-85 to resist wear. The precision requirement for the fit between the roller neck and the bearing is H9/f9, and roller end support bearings are used to enhance stability (as designed by Wuxi Jijia Precision Machinery Factory).

Processing flow: Adopting seamless steel pipe roller body+45 # steel shaft combination welding process, annealing treatment to eliminate internal stress, turning accuracy error ≤ 0.01mm. Internal cooling system integration (such as spiral waterway design), controlling rolling temperature ≤ 150 ℃.

Maintenance standard: Check the wear of the roller surface every 500 hours, and the amount of blade grinding should be ≤ 0.1mm. In humid environments, it is necessary to apply anti rust oil or use coated rollers to prevent oxidation and corrosion.

Summary: The precision rolling rolls used for straightening in steel mills need to take into account the material (high-speed steel, Cr12MoV), structure (flat roll/concave convex roll), and dynamic stability. Long term service performance is guaranteed through coating technology and dynamic balance testing. The selection should be based on the requirements of strip strength and straightening accuracy.