Protective coatings: Stone chipping

Various structural elements made of steel and aluminum, e.g. covers, steering rods and beams, must be protected against corrosion and stone chipping.

Challenge

  • High load due to stone chipping
  • Stone chipping destroys cathodic dip painting (Ecoat), passivation and other corrosion protection coatings.
  • Existing spray water and salts lead to corrosion in the damaged areas
  • Protective coating must be mechanically resilient during installation, transportation and operation
  • No additional energy for drying of the coating.

Solution

  • Water-based system that dries quickly at room temperature
  • Single-layer system with high yield
  • Excellent adhesion under mechanical stress, such as stone chipping
  • Firm film during installation due to fast drying
KTL damaged by stone chipping
KTL damaged by stone chipping

KTL damaged by stone chipping

Benefit

  • Low investment costs thanks to single-layer system with oven-free drying
  • Cost-efficient material consumption with selective application
  • Low application effort
  • Few process steps
  • Also a primer for stone chip protection coating
Protection of the primer and base material in the event of stone chipping
Protection of the primer and base material in the event of stone chipping

Protection of the primer and base material in the event of stone chipping

Application on the car body

Protected underbody of a battery electric vehicle
Protected underbody of a battery electric vehicle

Possible areas for protective coatings

You may also be interested in these case studies:

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