The double line pilger mill is used for producing various types of precision thin-walled pipes, including carbon steel, bearing steel, low alloy steel, stainless steel, titanium alloys, zirconium alloys, high-temperature alloys, copper-nickel alloys, copper-aluminum alloys, and various non-ferrous metals. It can roll two pipes at the same time, with high production efficiency and doubled output.

Characteristics of Cold Pilger Mills

Capable of producing precision thin-walled tubes from carbon steel, bearing steel, low-alloy steel, stainless steel, titanium alloys, zirconium alloys, high-temperature alloys, copper-nickel alloys, copper-aluminum, and various non-ferrous metals.

Utilizes ring-shaped groove rolls for long-stroke rolling, featuring large roll rotation angles and extended working sections of the groove, increasing the deformation zone length. The curved mandrel enhances metal deformation uniformity, allowing for larger feeding amount and improved finished tube quality.

Employs a curved mandrel to reduce rolling pressure, ensuring uniform deformation of the billet. Each pass achieves high reduction rates and significant wall thickness correction, with evenly distributed rolling forces and reduced axial forces, enabling the production of tubes with minimal outer diameter and wall thickness deviations.

Main drive system adopts permanent magnet motors for energy efficiency and stability.

Rotary and feeding are controlled by servo motors, ensuring precise and reliable feeding amount with stepless adjustment, as well as stepless adjustment of rotation angles. Within one rolling stroke, the billet undergoes two rotations and one feeding (or two rotations and two feeding).

All gear pairs in the eccentric gearbox are manufactured using hard-tooth grinding processes, with gears meeting Grade 5-6 precision standards, ensuring smooth transmission, long service life, and low noise

Achieves extremely tight tolerances and superior surface roughness for both inner/outer diameters and wall thickness

No material loss in the process, resulting in high material yield