Almost unlimited stroke lengths under force can be formed by hydraulic presses making them particularly suitable for wall ironing. Schuler offers horizontal presses as well as the traditional vertical forging systems.
The design includes an ingenius integration of two die chambers which enables the return stroke of the slide to be used for forging. This increases the level of productivity. Generally, one ironing operation is sufficient for calibrating precise parts. Relatively large reductions in the wall thickness on presses combined with a long stroke length and numerous consecutively arranged ironing rings can generate long, thin walled parts in one stroke. This is achieved by pulling the blanks through the die with the punch and, in one cycle, reducing the wall thickness precisely to the required dimension, creating the ultimate shape and surface smoothness.