The 508 Stone Chip Tester and its advantages for testing car coatings against stone chipping
Stone chip testers are used for tests such as cohesive failure of topcoats, adhesion failure between layers of a coating system, the brittleness of hard glass materials, the optimum film thickness for chip resistance, and the chip, impact and abrasion resistance of plastics and glass.
Stone chip testing on automotive test lines fires gravel or other media at a test sample with compressed air to simulate the effect of road grit on paint layers and other vehicle parts. It is used to test: topcoat adhesion failure, adhesion failure between paint layers, the brittleness of hard transparent materials, suitable film thickness for chip resistors, and the chipping and abrasion resistance of plastics and glass. The equipment consists of a gun assembly, an impact chamber, a sample holder, a feed hopper, a vibrator, an electrical control system and a compressor. Each part is standard, can be combined and configured as needed and removed quickly, making it convenient and practical and able to meet all the main automotive chipping tests.
The equipment is based on a common modular design made up of a base unit and a choice of modules. The base unit is common to all test methods and consists of an air reservoir, a vibrating feed hopper, a nozzle holder and a control box. Depending on the test procedure to be run, users choose the appropriate modules and connect them to the base unit.
Vehicles that fall short of the standard can suffer many problems caused by stones. To avoid them, regular, effective testing with this equipment is essential.
Advantages of the Erichsen 508 Stone Chip Tester from Sinotime
The 508 VDA Stone Chip Tester is a high-precision test instrument, characterised by good repeatability and comparability of results. The sample is struck by sharp-edged steel grit accelerated by compressed air. The unit has an air reservoir that removes the effect of pressure fluctuations in the external air supply. The grit is fed automatically by an adjustable vibrator. A multifunction display shows working pressure, test time, vibrator speed and number of tests (total / resettable).
Sinotime specialises in surface testing instruments with a complete range. The European and American brands we represent are leaders in their field. As a national agent, Sinotime has offices in Beijing, Shanghai, Shenzhen and Hong Kong. Note: products not bought from Sinotime are not covered by our warranty. We hold certificates for the products we represent.