Laser Quenching equipment
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Used for surface strengthening, repair, and remanufacturing of components, the coating has high adhe...
Flexible processing of complex curved sheet metal parts, with high cutting accuracy, fast speed, and...
Specially designed for seamless welding of precision plastic components, with a small heat affected ...
The roller shaft of the printing machine is one of the core components of the printing machine, and its surface accuracy directly determines the overprinting accuracy and printing quality of the printed products. In the process of long-term high-speed operation, the roller shaft surface is prone to increase the surface roughness and the roundness error exceeds the standard due to the friction with the bearing, the corrosion of the ink and the abrasion of the paper fiber, and then problems such as overprinting deviation and fuzzy printing images and texts occur, which affect the quality of the printed products and increase the scrap rate. The traditional grinding repair method will reduce the diameter of the roller shaft, affect the fitting accuracy with other parts, and the repair times are limited; The replacement of a new roller shaft is costly and has a long lead time. Based on the repair requirements of the printing press roller shaft, the Dow Laser Cladding Equipment adopts high-precision cladding technology to cladding a layer of wear-resistant thermal conductivity alloy coating on the wear surface of the roller shaft, which can not only accurately restore the dimensional accuracy of the roller shaft, but also improve its wear resistance and thermal conductivity.
The laser positioning system equipped with the equipment can realize accurate cladding of the roller shaft. After repair, the surface roughness of the roller shaft Ra ≤ 0.4 μ m, and the roundness error ≤ 0.005mm, completely restoring to the original design accuracy. The roller shaft of the Heidelberg CD102 printing machine in a printing plant is worn due to long-term use, the overprinting accuracy deviation reaches 0.1mm, and the printing scrap rate reaches 2.5%. The overprinting accuracy is increased to 0.03mm, and the printing scrap rate is reduced to 0.6% after the repair with the Dow laser cladding equipment. A single equipment can save over 80000 yuan of paper loss per year. At the same time, the cladding wear-resistant thermal conductivity alloy coating can accelerate the heat dissipation speed of the roller, avoid the ink drying uneven problem caused by too high roller temperature, and further improve the stability of the printing quality. The service life of the repaired roller shaft is 2 times longer than that before, and the repair cost is only 25% of that of the replaced roller shaft, greatly reducing the equipment maintenance cost of the enterprise.
