The forging process uses high pressure and temperature to change the non-directional grain structure of the cast aluminum starting material to the high integrity multi-directional grain structure of forgings. The aluminum remains solid throughout the process as the forging dies come together and change the shape of the round cast bar to the cylindrical shape of a wheel.
This forged blank is then placed in a custom built spin-forging machine to spin out and forge the rim section. The resulting radial grain direction places the highest material strength in the same direction as the operating loads. The result is “premium strength”.
By making the wheel a forged one piece we have eliminated any possibility of porosity. The world’s leading aircraft manufacturers use one-piece forgings for superior performance in critical structural applications. Tramsform forged wheels uses the same process, combined with over many years experience manufacturing aerospace and commercial forged products, to produce aluminum wheels. The result is a high strength, lightweight wheel with no porosity.
Load ratings can range from as low as 1500 pounds for racing and sport car applications up to 3,500 pounds for light truck, SUV, off road application and higher for commercial vehicles. These load ratings are verified by a series of cornering fatigue, radial fatigue and impact tests.