What are the common defects of aluminum?

Various aspects of aluminum profile defects: I believe that the newly-started aluminum sheet enterprises do not know much about the common defects of aluminum sheets. Let Xinyitong Aluminum briefly introduce several common aluminum plate defects, so as not to bring unnecessary trouble to enterprises due to negligence of enterprises! 1. shape: (1) staggered layers: the layers of the end face of the strip are irregularly staggered, resulting in uneven end face. Reason: the blank is uneven; Improper control of uncoiling and coiling tension of rolling mill; Improper adjustment of flattening roller, etc. (2) Roll collapse: the roll core is seriously deformed and the roll shape is not round. Reason: improper tension during crimping; External pressure. (3) Lateral bending: the plate shape is bent to one side. Cause: The leveler has insufficient pressure. (4) Wave: the general term for various uneven phenomena caused by uneven deformation of aluminum plates and bars. The waves generated at the edges of plates and belts are called side waves, and the waves generated in the middle are called medium waves. What should be paid attention to in the middle and during use of paper tape filter? 1. If there are many impurities in the liquid and the specific gravity is large, the filter paper will easily collapse and break. 2. The flat screen paper tape filter is limited by the structure, and the liquid pool is shallow. If the liquid has a certain viscosity, or there are many bubbles in the liquid, or the emergency signal of the liquid level switch adhering to impurities fails, the liquid will overflow. 3. Filter paper is an important accessory of flat screen paper tape filter, and it is also a consumable, in order to reduce the consumption of filter paper. It is generally recommended to add a set of magnetic separators or adopt other forms on the flat screen paper tape filter. 4. If the slag end of the flat screen paper tape filter is not carefully designed, it will fall. 5. The flat screen paper tape filter is actually a set of water tank with filtering device. How to clean the water tank conveniently is a problem. 6. If large flow filtration adopts flat screen paper tape type.

Various aspects of aluminum profile defects: how to prevent defects when aluminum profile is extruded. Wuxi Yimeide Bian Xiao 20 19 April 1 1 introduces a technical article on aluminum profile extruder for your reference! How to prevent the defects of aluminum profile extrusion products? Summarized the following five points, I hope you can learn useful knowledge from them: 1. For the mold part, for the plane mold, it is necessary to install a deflector to reduce the entrance. 2. Adjust the aluminum extruder to ensure that the extrusion rod is centered, and the size of pressed cake and material container need to be tested and replaced regularly. 3. After the aluminum strip is cut, the dust on it is blown clean to reduce the amount of coal ash and leave enough residual thickness. Too thin residue will cause the aluminum rod to be clamped at the end of the profile. 4. The extrusion speed should be effectively controlled. 5. Clean the cylinder every production cycle. Except for aluminum extruder, in fact, no matter what kind of machine, regular maintenance is very important. Only this and the common defect of aluminum profile oxidation: 1, aluminum profile surface has color spots. This abnormality is generally caused by poor quenching and tempering of metal or poor material itself, so the treatment method, re-heat treatment, or replacement of material. 2. Rainbow color on the surface of aluminum profile. This abnormality is generally caused by operational errors. Resulting in poor product conductivity. Solution and re-anodizing. 3. The surface of aluminum profile is bruised and badly scratched. This abnormality is usually caused by careless operation and solutions (such as re-anodizing) during transportation or processing. 4. White spots will appear on the surface of aluminum profile when it is dyed. This abnormality is usually caused by oil or other impurities in the water during anodic treatment. Quality standard: 60.