Casting The Blanks
Manufacturing the best wheels in the industry begins with nothing but the finest raw materials, top grade A356.2 aluminum. The alloy is melted down in the melting furnace at approx. 1000°C. Before being transported to the casting machines, the alloy is cleaned and purified again using a melt cleaning process. The low-pressure casting process with its controlled and careful cooling process, tailored for every wheel, ensures a perfect microstructure for the wheel blank.
Heat Treatment
Solution annealing
Repeated strong heating, so-called solution annealing of the blanks, dissolves sufficient alloying elements in the molecular solid solution, allowing them to adopt a closer connection.
Quenching
Rapid quenching cools the blanks to 70°C and hardens the molecular structure. This reinforces the close bonds, but makes the wheel blank brittle at the same time.
CNC Machining
Highly-modern CNC machines finish the inside and outside of the wheel blank to the final dimensions. CNC machines remove as little as 0.01mm of material per pass to achieve the utmost precision.
Every wheel must go through the dynamic balance test. Only if the test is passed according to the extremely stringent tolerances is the wheel allowed to enter the rest of the manufacturing process.
Finish
Comprehensive cleaning in the pre-treatment area removes all contamination on the wheel surface, which could potentially affect later lacquer application on the wheel.
Application of the colored paint onto the powder-coated wheel via electrostatic coating and compressed air spraying. This ensures even paint distribution even in difficult places, giving a perfect paint coating.
Final check of the surface quality by a staff member to ensure compliance with the high quality standards. The wheel then goes to be packed.