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Repair of extrusion die discharge port: solution to improve the surface quality of profiles
Date:2025-11-24 13:57     Source:daokedao     Browse:31

After the discharge port of the aluminum extrusion die is worn, scratches and roughness appear on the surface of the profile, and the surface quality compliance rate drops below 80%. Daokedao adopts a composite process of diamond grinding wheel polishing and laser cladding. Firstly, the precision of the discharge edge is repaired, and then WC Co coating is fused, with a hardness of HRC68 and a 5-fold increase in wear resistance. After repair, the size tolerance of the discharge port is ± 0.01mm, the surface roughness is Ra0.04 μ m, and the surface smoothness of the profile reaches Ra0.8 μ m or above. After application in a certain aluminum profile factory, the surface quality compliance rate of profiles has increased to 99%, the extrusion die life has been extended from 1000 tons to 3500 tons, and the processing cost of single ton profiles has been reduced by 150 yuan.

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