Model 200

Description

The Lacquer and Paint Testing Machine, Model 200, is a bench-mounted unit with a cast iron machine body and a cylindrical test head.

Model 200 is used for the ERICHSEN CUPPING TEST in accordance with DIN ISO 1520, ISO 1520, BS 3900 : Part E4, NF T 30-019 und SIS 18 41 77 on coated sheet metal, with a tensile strength of 400 N/mm², up to 1.25 mm thick and from 70 - 90 mm wide.

The painted or otherwise coated sheet metal specimen is drawn into a die using a spherical nose punch, thus stretching the material until the coating cracks or peels off. The depth to which the material has been drawn by the punch when the coating fails is the measure of the quality of the paint or coating material and relates to the elongation and adhesive properties. This simple hand operated Testing Machine is particularly suitable for quality control on lacquers, paints, plastic coatings and enamels in smaller establishments.

Design and Function

To perform the cupping test the specimen is placed into an opening through the test head with the coated side facing upwards.

The specimen is clamped by turning the blank holder clockwise.

The drawing process is initiated by pulling the clutch pin outwards from the locating sleeve and then turning the test head clockwise.

When the coating fails, the test is completed.

The depth reached can be read off directly on a digital counter.

The formation of cracks in the coating can be observed during the entire process by looking down onto the die holder.

For more precise visual observation of the failure of the coating during the process the use of a special microscope with battery operated lamp is recommended.

Scope of delivery

• Lacquer and paint testing machine, model 200
• Testing tool No. 27 according to DIN EN ISO 1520, in precision design
• Operating instructions