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Ref: TUBULAR IMPACT
Impact test describes a method for evaluating the resistance of a dry film of paint,varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight.The coating under test is applied to suitable, thin(normally metal)panels. After the coating has cured, a standard weight is dropped on the each panel from a height that will cause deformation of the coating and the substrate. The test can be carried out with the coated side of the panel facing upwards(i.e.towards the falling weight)or downwards(i.e away from the weight).By gradually increasing the height from which the weight drops, the point at which failure occurs can be determined.Films generally fail by cracking, which is made more visible by the use of a magnifier. The test can be carried out: ---either as a pass/fail test, the test being carried out from one drop height and with a specified mass, so as to test compliance with a particular specification. ---or as a classification test, to determine, by gradually increasing the drop height and/or the mass, the minimum mass and/or drop height for which the coating cracks or peels from its substrate.These impact testers consist of a solid base with a guide tube support, some different weights hammers(falling weights)and some different diameters punches. Users can choose different size and weight hammer to simulate paint used different environments. Calibration certificate suppliued as standardThere are two verisons available:T01-700163Heavy Duty Impact Tester in accordrance with ASTMD2794 , ASTM D 3029 & ISO 6272.2 - 0-100cm scale, 3 falling weights (2 x 1000g & 1 x 300g) and two punch diameters or 12.7mm & 15.9mmT01-700164ISO Impact Tester in accordance with ASTMD2794 , ASTM D 3029 & ISO 6272.1 0-100cm scale, 4 falling weights (2 x 1000g & 2 x 2lb) and two punch diameters or 20mm & 15.9mm
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Ref: IMPACT TESTER
This Impact Tester is in accordance with the specification in National Standards determination of paint film resistance to impact and the practical requirement of mechanical construction. The operation principle of the impact tester is by means of a weight that drops down from a specified height and impacts a painted panel under test to result in its rapid deformation, and the film resistance to impact is then attained from observing the film to see if it cracks or peels off..
The DuPont Impact Tester is designed to test the impact endurance of coating material (after coated). Place the specimen with the coated face upwards, and connect it with specified radius Impact Head, then use a certain weight to impact the Impact Head on a fixed height, afterwards, check the damage or deformation of coating .To perform the impact test for painted and coated materials is to use an impact head with various round angles to touch the specimen in the beginning, and then a selected weight free dropping from a certain height to hit the impacting head on to the specimen below. Run the same way to test three more specimens, leave the samples for an hour, and then evaluate if there is crack on the painting.It is compatible with ASTM D 2794, JISK 5400, CNS 10756.Main Technical Parameters* Instrument scale Length:50-500mm(grade :0mm)* Mass of hammer:300g, 500g, 1000g* Piercer specification:1/2, 1/4, 1/8, 1/16, 3/16in* Notch diameter on the bolster block:1/2, 1/4, 1/8, 1/16, 3/16in