Perforation

Hole perforation

• Ø 1 mm - 14 mm
• applicable for many sorts of workpieces
• large free surface of approx. 20%
• very good electrolyte exchange
• allows fast drying process in barrel drying system
• ideal solution for high filling volumes
• versions: bevelled and recessed holes, oblique holes

Long hole perforation

• Ø 2,5 mm - 8 mm
• large, free surface
• very good electrolytic exchange
• liquids can easily drain off
• fast drying process in barrel drying system

Slot perforation

• width: 0,8 mm - 2,5 mm, length depending on barrel type and design
• especially suitable for the surface treatment of pointed workpieces
• very good electrolyte exchange
• liquids can easily drain off
• continuous layout of slots or offset layout of slots to increase stability of the barrel body
• version: inside bevelled slot edges to reduce material wear

Barrel segments with slot perforation for micro-sized workpieces

• slot dimensions 0,4  x 3,5 mm
• especially suitable for the surface treatment of micro-sizes workpieces, e. g. in the electronics industry
• very good electrolyte exchange and current transmission ensure consistant coating thickness
• inside and outside bevelled slot edges
• nubs and trip bars at the inner surface avoid adhesion of workpieces

Sieve buttons

• Ø 40 mm or 23 mm
• Perforation of sieve buttons: square holes or slots
• worn out sieve buttons can be replaced by new ones
• suitable for the surface treatment of sensitive, small an light workpieces
• smaller free surface compared to all other perforation types