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Specializing in industrial aluminum profile custom Henan industrial aluminum profile factory, Henan industrial material custom manufacturers, electronic radiator manufacturers, automotive battery tray manufacturers.
A Henan industrial aluminum profile manufacturer discusses how to identify the quality of aluminum profiles.
Release Time:
2022-08-08
Henan industrial aluminum profile manufacturers talk about how to identify the quality of aluminum profiles? Aluminum profiles produced by extrusion processing, due to the particularity of their manufacturing process, surface defects of aluminum profiles caused directly or indirectly by the quality of mold polishing or manufacturing process specifications in the extrusion process are shown as follows: coarse texture, uneven color, dark bands, bright bands, lines, burrs (concave burrs, convex burrs), poor gloss. Surface unevenness defects of extruded aluminum profiles: In the extrusion processing of aluminum profiles, common defects are very direct, such as bending, twisting, deformation, and weld beads. Ningbo aluminum profiles coming out of the extrusion production line are called plates or billets, and white materials. The initial judgment of surface quality is generally carried out after the mold operation is extruded to 2-3 bars. The surface quality is inspected and analyzed to determine whether it meets the standard. After the surface meets the standard, other items are inspected. Henan industrial aluminum profile manufacturers: quick methods to identify poor surface quality of aluminum profile billets 1. Touching: Touch the surface of the plate, or use fingernails to scratch the lines that can be scratched, and feel the concave and convex burrs to identify whether there is an obvious feel. Various surface treatments can be used for identification. 2. Neutral pen scratches: In the extrusion process of plastic-steel aluminum profiles, use a neutral pen to...
Henan Industrial Aluminum Profile Factory Let's talk about how to identify the quality of aluminum profiles?
Due to the unique characteristics of its manufacturing process, extrusion processed aluminum profiles may have surface defects as shown below, which are directly or indirectly caused by the quality of the mold polishing or the manufacturing process specifications during the entire extrusion process: coarse texture, inconsistent color, dark bands, bright bands, lines, raised or recessed areas, and poor gloss.
Causes of uneven surface defects in extruded aluminum profiles: In the extrusion processing of aluminum profiles, common defects are often immediate, such as bending, twisting, deformation, and weld beads.
Ningbo aluminum profiles coming from the extrusion production line are called plates or billets/raw materials. The initial judgment of surface quality is generally done after the mold operation, when 2-3 bars have been extruded. A full inspection sample is analyzed to determine whether the surface quality meets the standard. After the surface meets the standard, other items are inspected.
Henan Industrial Aluminum Profile Factory Quick methods to identify poor surface quality of aluminum profile billets
1. Tactile touch: Touch the surface of the plate, or use a fingernail to check for lines that can be scratched, and recessed or raised areas that can be felt, to determine if there is any obvious tactile sensation. Various surface treatments can be distinguished.
2. Neutral pen scratch: During the extrusion process of plastic-steel aluminum profiles, use a neutral pen to scratch the surface of the aluminum profile. Determine the presence of coarse texture or lines based on the tactile sensation and continuity of the neutral pen scratch. The surface can be identified using oxidized materials.
3. Spray paint test: During the full inspection sampling, use an automatic spray painting equipment to spray the material surface, simulating the expected spray painting effect. After the surface dries for 1-2 minutes, observe and determine if there are any lines, recessed or raised areas, etc. The surface can be identified using sprayed emulsion paint.
4. Acid treatment test: During the full inspection sampling, take a 300mm sample section from the third bar and immerse it in a boiling mold tank for 30-40 seconds. (Note: The concentration and temperature of the sodium hydroxide solution. If the concentration and temperature are too low, increase the immersion time appropriately, generally not exceeding 60 seconds). Based on the surface of the plate before acid treatment, you can see if there are any inconsistent colors, lines, or mold welding lines. High surface requirement oxidized materials can be used.
5. Surface polishing: During the full inspection sampling, take a 300mm sample section and use an industrial white cloth to polish the surface of the plate horizontally. After polishing, it is easier to observe very small defects on the surface of the plate. Used to identify fine lines, recessed or raised areas (that are not easily scratched with a fingernail), and surface defects that are not easily identified by the above 4 methods. Can be used to identify surfaces treated with sprayed emulsion paint, oxidized materials, or fluorocarbon paint.
A quick full inspection to determine whether the surface quality meets the standard is the first step. Even if the first sample meets the standard, abnormal situations may still occur during the extrusion process. Therefore, in actual production, it is necessary to determine the overall level of material problems and the type of surface treatment method, combined with order details and customer product quality requirements, and according to the requirements of the operating procedures, to formulate a reasonable inspection frequency and select the corresponding method for identification; make immediate and accurate judgments, with the standard being to judge correctly and without omission.
Henan Industrial Aluminum Profile Factory The editor has explained a lot. If you need to purchase or customize aluminum profiles, please contact our factory.
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