How to produce sun roof aluminum profile

In the production of automotive skylight aluminum profiles, refining treatment is a crucial step. Aluminum alloy is placed in a furnace and heated to 740°C to melt, after which a multi-component mixed gas consisting of 75% nitrogen, 5% argon, 10% carbon monoxide, and 5% chlorine is introduced into the furnace. The gas-introduction time is 30 minutes, the pressure is 15 MPa, and the flow rate is controlled at 1.5 m³/min. This treatment can effectively remove impurities from the aluminum alloy and improve the quality of the aluminum profile.

Key Points in Casting Treatment

The casting treatment process requires strict control of temperature and speed. The casting temperature is controlled at 715°C, and the casting speed is 100 mm/min. The cylindrical billet cast into shape is cooled by water, with a water pressure of 20 MPa, an inlet water temperature of 20°C, and an outlet water temperature of 40°C. After that, the cylindrical billet is water-cooled to 525°C for uniform annealing and heat preservation for 5 hours.

Processing Techniques for Extrusion Treatment

Extrusion shaping is performed at a pressure of 200 MPa, a speed of 12 m/min, and a temperature of 460°C. Under these processing parameters, the cylindrical billet can be extruded into an aluminum plate, laying a foundation for subsequent processing steps.

Stamping and Quenching Treatment

The aluminum plate is stamped into shape once, forming the car skylight frame. Then, quenching treatment is carried out, with the quenching treatment temperature set at 250°C and water cooling used. The water-cooling time is 2 hours. Through this treatment, the car skylight frame can have high tensile strength, good yield strength, and high elongation.

Details of Trimming and Drilling Process

The skylight frame of the vehicle is naturally cooled to room temperature after stamping and quenching, and then trimmed and drilled. This process can make the size of the product more accurate, meet the installation requirements of the car sunroof, and finally get the finished product. The entire production process is rigorous and meticulous to ensure the high quality of the automobile skylight aluminum profile.