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Accuracy and precision. To the smallest detail.

Cataphoresis - KTL cyclic - Galma, a.s.

 

Linka GalmaCataphoresis means application of paint by an electro-phoresic method, whereby the painted product becomes a cathode in the direct current anolyte (water solution of the epoxy paint) and thus attracts the colour cations. Cataphoresis represents one of the most progressive production technologies of application of basic paints with a high degree of corrosion protection of metals. The cataphoresis method of paint application is considered to belong among the most advanced technologies of metal products surface treatments. Currently cataphoresis does not have comparable competition in series of production areas. The biggest contribution to the development of cataphoresis technology has automotive industry, where anti-corrosion resistance of bodyworks and other components is the focus of interest of all producers. High quality of surface treatment together with economic and environmental advantages predestined this technology to be used in other fields of engineering and consumer goods industry.

 

cataforesis

Advantages of KTL  

  • Capability to apply color to any electrically conductive object including hollow and indented subjects
  • Appropriate anti-corrosive basic surface treatment for powder coating colors
  • Appropriate anti-corrosive basic surface treatment for painting (acrylate, water based paints, and so on)
  • Appropriate anti-corrosive final surface treatment
  • Capability to paint hot or galvanized materials and aluminium.

 

KTL technological process

  • Chemical degreasing 0
  • Chemical degreasing I
  • Chemical degreasing II
  • Two-stage rinse
  • Pickling
  • Two-stage rinse
  • Activation
  • Zn phosphate
  • Two-stage rinse
  • Passivation
  • One-stage rinse
  • Cataphoresis knot
  • Rinse ultrafiltrate twice
  • Blowing
  • Kiln
  • Cooling
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Technical properties of paint

Powercron 6000 is the newest product of the 6th generation of cathodic epoxid electrophoretic materials free of heavy metals and used for protection of bodyworks, steel wheels and other ccessories with different thickness of the layer. Chemicals used in surface pretreatment are supplied by the company Henkel. Final coat of cataphoretic paint is designed to meet the needs of automotive industry and fulfils required specifications, e.g. VW13750 x634, DBL7391 AA 54, GS90011 LASW3…

Standard paint layer thickness: 15 - 35 µ
Dimensions of KTL bath: 1200 X 600 X 3000 mm  (h x w x l)
Maximum product weight: 550 kg

Significant improvements in the protection against corrosion of metal objects can be achieved by combining of galvanizing or Zn/Ni electroplating and subsequent cataphoretic coating, called duplex. Such surface treatment ensures superior corrosion resistant protection which reaches over 600 hours (technology Zn / Ni over 1000 hours) to the corrosion of basic material. To achieve even better corrosion resistance, we perform Triplex surface treatment (ZnNi) + KTL + powder coating. According to the type of powder, there is possible to achieve corrosion resistance of 2000-3000 hours. By applying powder mechanically highly resistant coatings are achieved.