The new line consists of an open-die forging press and a ring-rolling mill as well as furnaces and material handling equipment. The 33/30 MN forging press is uniquely designed as a combination open-die and ring blanking press and consequently, will provide high flexibility. In addition to producing blanks for the manufacturing of rings, the customer will produce conventional open-die forgings with a weight of up to 10 t. Due to the precisely operated lifting and centering device, the press achieves high accuracy for the blank punching and piercing operations.
The ring-rolling mill which processes the ring blanks from the forging press has radial and axial forces of 4,000 kN each, with a maximum ring diameter of 2,500 mm. The mill rolls rings with a height of up to 700 mm and weights of up to 5 t. Siempelkamp will supply the entire ring rolling machine including the hydraulic system, electrical system and rolling dies.
The "Universal Cassette Design" allows the use of different main roll configurations in the same machine. The cassette principle provides the customer with a high degree of flexibility in production and allows high throughputs even for small batches because the cassette can be exchanged within 30-50 minutes.
By using design principles that have proven effective in other Siempelkamp presses, the machines achieve a long operating life. Extensive FEM calculations are the guarantee for the high fatigue strength of the mechanical structural components. This is further supported by the fact that the housings for the axial cones, which experience high mechanical stresses, are designed as one-piece castings without weld seams. Similarly, all bearings are designed with a long operating life in mind.