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Paper machine dryer shaft repair: deformation control of Daokedao laser cladding vs traditional repair welding
Date:2025-11-05 14:30     Source:daokedao     Browse:7

The drying cylinder shaft of a paper machine is subjected to high temperatures (above 180 ℃) and axial loads. Traditional arc welding repair requires a large amount of heat input, and the deformation of the shaft exceeds 0.3mm, resulting in eccentric operation of the drying cylinder and paper wrinkling. The success rate of repair is less than 60%.

The Daokedao laser cladding equipment adopts high-temperature environment precise cladding technology, with low heat input and controlled drying cylinder shaft deformation within 0.05mm, without the need for subsequent calibration. Using high-temperature resistant alloy powder, the strength retention rate of the cladding layer reaches 95% at a high temperature of 200 ℃, and the wear resistance is improved by 4 times.

The service life of the repaired dryer shaft has been extended to 3-4 years, the pass rate of paper flatness has increased by 18%, and the repair cycle has been shortened to 1/4 of traditional processes. After adopting this technology, a certain paper mill reduced waste losses caused by paper wrinkles by over 300000 yuan annually.


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