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 press screw of the press part of the paper machine is a key component for dewatering and conveying paper. It needs to contact wet paper and pulp for a long time. The water in the wet paper, pulp fiber and added chemicals will cause serious wear and corrosion to the screw surface. The worn screw will lead to uneven paper thickness, reduced dewatering effect, and then affect the paper quality; At the same time, corrosion will shorten the service life of the screw and increase the equipment maintenance cost. The traditional press screw is made of ordinary carbon steel, and the surface is sprayed with anticorrosive coating. However, the coating is weak, easy to fall off, and has a short service life. Frequent replacement of the screw will interrupt the paper production and affect the production efficiency. Aiming at the wet paper abrasion and corrosion of the press screw of paper machine, Dow Laser Cladding Equipment adopts the cladding scheme of water-resistant and wear-resistant alloy coating. The coating is metallurgically bonded with the screw matrix, with high bonding strength, not easy to fall off, and excellent water-resistant and wear-resistant performance.
The equipment can accurately adapt to the complex spiral surface of the screw and realize uniform cladding through automatic path planning. The thickness uniformity error of cladding layer is ≤ ± 0.1mm to ensure the conveying efficiency and dewatering effect of the screw. The squeezing screw of culture paper production line of a large paper mill had obvious wear after 3 months of use, the thickness tolerance of paper was ± 0.05mm, and the pass rate was only 95%. With the treatment of Dow laser cladding equipment, the service life of the screw rod is extended to 9 months, the thickness tolerance of the paper is reduced to ± 0.02mm, the pass rate is increased to 97.5%, and the loss of unqualified paper can be reduced by more than 100 tons per year. If calculated as 5000 yuan per ton of paper, the cost can be saved by more than 500000 yuan. At the same time, the screw surface after cladding is smooth, which reduces the friction resistance with the wet paper, and reduces the energy consumption. A single production line can save more than 80000 yuan in electricity cost per year. The repair cost is only 35% of the replacement cost, which greatly reduces the equipment maintenance cost of the enterprise.
