Cathodic Delaminator Model 602

Description

The Cathodic Delaminator, Model 602, is used for rapid checking of product quality and frequently quality control of coated metals. The apparatus consists of a control unit and a temperature control vessel (immersion container) with 8 test receptacles and circulator. Each test vessel has its own constant current source. So you can use up to 8 specimen for testing, independently of each other. The cathodic delamination allows the determination of infiltration of the coating in the damaged area and erroneous pretreatments can be made visible (formation of bubbles during pinholes, scratches or stone impact).

Purpose and Application

Mechanical injury of organic coatings on metal cause the loss of corrosion protection. Known examples of the mechanical destruction of coatings are: stone impact on motor vehicles, transport and installation damage. Corrosion will be affected by corrosion protection system. Particularly the preparation of the substrate surface before coating and the composition of the coating are important for corrosion protection systems.

Principle of the Test

Test instrument for examining the adhesion of coatings (coated metals). With a scratch tool (e.g. Scratching Tool acc. to van Laar, Model 426) the protective layer will defined injured by a 5 cm long scratch, through to the metallic specimen. The specimen is placed in a test receptacle filled with electrolyte (0.5 N KOH) and will then secured with an alligator clip. The test will started by a timer (test duration 30 min). The infiltration of the coating can now be observed under the accelerated conditions.

Scope of delivery

• Cathodic Delaminator, Model 602
• Mains cable
• Instruction manual