STS Industrie

Automatic Line Surface Treatment of Watch Displays

4 surface treatment lines for the colouring of displays:

  • Surface treatment for displays and bezels
  • Varnish, silver, gold, colors and finishing processes
  • Capacity = 8.5 cycles per hour
  • Cathodic window: diameter 350 x 400 mm.
  • Machine length = from 12.50 to 26.50 m
  • Machine width = 4 x 2.00 m
  • Machine height = 2.70 m.
  • 7 side-arm hoist with max. load 50 kg
  • Separate air exhaust for cyanidic residues
  • Each line can be used independently 

Special bath design for round workpiece carriers

  • Specific bath geometry to reduce the volume of  the precious metal chemistry (Gold, Rhodium, Silver)
  • Separate compartment for heating elements and level control
  • Anode holder for electrolytic processes
  • V-Saddle with electric contact for the rotation of the round work-piece carrier
  • Adjunction of top-spray rinse devices where needed

Design Details


View of the side-arm hoists with load capacity 50 kg
Special bath design for round workpiece carriers
Backside of one of the lines with exhaust and filter pumps
Rinsing station with Osciline technology connected to a triple rinsing cascade situated at the lower level of the machine. Additional top-spray for optimum rinsing of the work-piece carrier.
View of the 4 parallel lines for the coloring of watch making displays, length between 12.50 m and 26,50 m
Stainless steel tank for de-greasing with ultrasonic units

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