Similar to tube tapering (which is tube end reduction over a longer, angled length) tube end reduction can be performed on either rotary reducing machines or hydraulic end formers. The latter, using a static forming die and clamps can form tubes up to a 5.5″ diameter which is far greater than that of rotary swaging
Rotary reduction however has other benefits. These are:
- No interruption to the grain structure of the parent material.
- Work piece can be of a hot or warm condition. Ideal for heavy wall components.
- Tube layering. Tubes of different metals can be reduced one onto another creating a ‘sandwich’ effect.
- Max start for tube end reduction 5.5″
- Max wall thickness for tube end reduction 5mm (unless hot rotary)