Papermaking Machinery

Papermaking machinery runs continuously under high-temperature, high-humidity conditions, demanding high coaxiality, roll surface accuracy and corrosion resistance from shaft parts. Hanweite provides supporting machining of dryer shafts, guide rollers, vacuum rolls and gearbox parts for papermaking equipment customers, performing dynamic balance and runout checks before delivery.

Industry Solutions

• Dryer shaft: 42CrMo forging, coaxiality ≤0.01mm, journal precision ground to Ra0.4
• Guide roller: chrome plated or ceramic coated surface, roll surface roundness ≤0.01mm
• Vacuum roll: porous structure machining, hole position accuracy and inner cavity finish control
• Gearbox parts: matched machining of carburized and quenched gears and housings

Typical Parts and Processes

The main equipment includes Mazak QT CNC lathes (long shafts) and Niigata vertical machining centers (box parts), with CMMs and laser interferometers for accuracy verification.

Quality Assurance

For papermaking industry customers, we provide material certificates, first-article inspection reports and finished product inspection reports per batch, with dynamic balance correction on long shaft parts before shipment.