High-tooth aluminum extrusion heat sink extrusion process and its precautions

【China Aluminum Industry Network】 1. For aluminum molds with high denticity and tongue ratio, it is recommended to use short aluminum rods (150-200mm) or pure aluminum rods to ensure better flow and reduce the risk of defects during extrusion. 2. Before conducting trial molding, the extrusion center of the aluminum extrusion machine must be carefully adjusted. The extrusion shaft, the billet, and the die holder’s discharge port should all align on the same central line to ensure smooth material flow and prevent misalignment. 3. During the trial run and normal production, the heating temperature of the aluminum rod must be strictly maintained between 480°C and 520°C. This ensures optimal plasticity and reduces the likelihood of cracking or poor forming. 4. The mold itself should be heated according to standard temperatures, typically around 480°C. For flat molds with a diameter below 200mm, the insulation time should not be less than 2 hours. For shunt dies, the insulation time should exceed 3 hours. Molds with diameters over 200mm require 4–6 hours of insulation to ensure even core and surface temperatures. 5. Prior to trial runs or production, clean the cylinder liner using a clean cylinder pad and check that the extruder is functioning properly. Any irregularities in the machine’s operation should be addressed before starting. 6. When starting a trial run or initial production, set the extruder to automatic gear off and reset all controls to zero. Begin with low pressure and gradually increase it, allowing about 3–5 minutes for the material to fill the mold. Keep the pressure within 100Kg/cm² during filling, with ammeter readings between 2–3A. Once the process stabilizes, you can slowly increase the speed. In regular production, the extrusion pressure should remain below 120Kg/cm². 7. If any issues such as blockage, partial tooth cutting, or uneven extrusion speed are detected during the trial or production phase, stop the mold immediately. Unload the mold carefully to avoid damaging the tooling and minimize waste. 8. Ensure the discharge port remains unobstructed throughout the process. Adjust the slip support or fixture based on the discharge conditions. Monitor the system continuously and address any abnormalities promptly. If a shutdown occurs, stop the machine immediately to prevent further damage. 9. During the straightening process, conduct thorough tests before and after any changes. Follow operating procedures carefully, apply moderate force, and maintain strict quality control to ensure consistent product quality. 10. When cutting aluminum profiles, follow the production schedule and cut to the required length. Avoid fast feeding of the saw blade to prevent damage to the ends. Securely clamp the profile and remove any flash or burrs after cutting. 11. Aluminum alloy profiles should be stored in standardized baskets. Place the padding correctly to protect the profiles from scratches or deformation. 12. For aging treatment, maintain a temperature of 190 ± 5°C for 2.5–4 hours, followed by air cooling. This process enhances the mechanical properties and dimensional stability of the final product.

Explosion Proof LED Lamp

Explosion Proof LED Lamp is a specialized lighting fixture designed for use in hazardous environments where there is a risk of explosion due to the presence of flammable gases or vapors. These lamps are constructed with materials that prevent the ignition of explosive gases or dust particles, such as aluminum or stainless steel, and are equipped with a sealed, explosion-proof housing to contain any potential explosions. LED technology is used to provide bright, energy-efficient lighting that is ideal for use in areas such as oil refineries, chemical plants, and other industrial settings where safety is a top priority. These lamps are also designed to withstand harsh environmental conditions, such as extreme temperatures and weather conditions, making them a reliable and durable lighting solution for hazardous environments.

The explosion-proof light, also known as the hazardous location light, possesses several distinctive features. Firstly, it is designed to operate safely in environments where flammable gases, vapors, liquids, or combustible dusts are present, thereby minimizing the risk of explosions. Secondly, these lights are constructed using materials that can withstand high temperatures, shocks, and impacts, ensuring their durability and reliability in challenging conditions. Additionally, explosion-proof lights are equipped with special seals and gaskets to prevent the entry of hazardous substances into the lighting fixture, thereby maintaining a safe and secure environment. Furthermore, these lights are designed to provide efficient illumination while consuming minimal energy, making them energy-efficient and cost-effective. Lastly, explosion-proof lights often come with advanced features such as dimming options, remote control capabilities, and compatibility with smart lighting systems, allowing for enhanced control and customization.

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