Aluminum profile surface damage is typically caused by various factors related to the raw material, mold condition, and handling processes. One of the main causes is the presence of impurities or segregation within the ingot. If the ingot has not been properly homogenized, hard metallic particles can form on its surface. During the extrusion process, these particles may come into contact with the working belt, causing scratches or damage to the profile surface. Another common cause is debris or imperfections in the mold cavity or working belt. If the mold's working belt has low hardness, it can easily get scratched or damaged during extrusion, which then transfers to the profile. Additionally, hard inclusions such as exposed metal parts or graphite bars in the discharge track or oscillating plate can also lead to surface defects when they come into contact with the aluminum profiles. Improper handling during production can also result in surface damage. For example, if the fork bar moves the profile too quickly from the discharge rail to the swing bed, it can cause physical damage. Similarly, manually dragging or moving the profiles within the swing bed without proper care can lead to scratches. Moreover, during transportation, friction or direct contact between profiles can cause further damage. To address these issues, several solutions can be implemented. First, improving the quality control of the ingot is essential to reduce impurities and segregation. Second, enhancing the mold repair process and ensuring regular nitriding treatments can increase the durability and hardness of the working belt. Third, using soft felt or protective materials to separate the profiles from auxiliary tools can minimize direct contact and prevent surface damage. In addition, careful handling during production is crucial—avoiding unnecessary dragging or turning of the profiles. Lastly, organizing the profiles properly in the material box can help reduce mutual friction and protect their surface finish. By addressing these factors, manufacturers can significantly improve the quality and appearance of aluminum profiles. Curtain Wall Glass,Colored Glass,Glass Wall,Glass Curtain Wall SHANDONG TOP LEADER GLASS CO.,LTD , https://www.topleaderglass.com