Extruded aluminum profiles are widely used in our daily lives, but they are mainly used for interior decoration. The structural properties of this extruded aluminum profile are relatively stable and relatively corrosion resistant. The disadvantage is that sometimes the surface of aluminum profiles can blister. So what should we do in this situation? This is the way to eliminate these bubbles.
Causes of Bubbles and Stripping in Aluminum Extrusion Processing
1. The extrusion cylinder and the extrusion pad have been worn, the dimensions of the extrusion cylinder and the extrusion pad do not match correctly, and the diameter difference of the gasket used exceeds the allowable value;
2. The pressing cylinder and pressing pad are too dirty, with oil, moisture, graphite, etc.
3. "The shovel grooves on the ingot surface are too many, too deep, or there are holes, sand holes, loose tissue, and grease on the ingot surface.".
4. When replacing the alloy, the inside of the barrel was not cleaned;
5. The ingot is too long, filled too fast, and the ingot temperature is uneven, resulting in no barrel filling, incomplete exhaust in the cylinder, or improper operation, and the exhaust process is not performed;
6. The design of the die hole is not reasonable, or the residual material is improperly cut. The residual material in the diversion hole and the diversion hole is partially removed, and the gas in the gap enters the surface during the extrusion process.
Methods for eliminating bubbles or peeling in extrusion profile factories
1. Reasonably design the matching dimensions of the extrusion cylinder and gasket, and regularly check the tool dimensions to ensure compliance with requirements. If the abdomen of the compression cylinder is large, it should be repaired in a timely manner.
2. Keep the surface of tools and ingots clean, smooth, and dry;
3. When replacing the alloy, please thoroughly clean the cylinder;
4. Frequently inspect equipment and instruments to prevent excessive temperature and speed;
5. Reasonably design and manufacture tools and molds, and design the inner slope of the guide hole and the guide hole to be 1 ° - 3 °;
6. Strict operation, correct cutting of residual materials and complete exhaust gas discharge.
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