There are multiple benefits which metal sheets can obtain with a good quality coating. It provides low coefficient of friction which reduces external force application. Using coated fasteners reduces the problem of galling and seizing. They provide protection against corrosive environments. However, a low-quality coating layer may not be able to deliver these features and can get rejected by consumers.
With growing competition in the Coating market, it’s becoming tough to meet the set criteria and surpass customer expectations. To lead the market, the paint and coating manufacturers will have to work hard in improving their coating efficiency. And for that one must evaluate the coating durability with the highest accuracy by conducting Impact resistance test.
Presto brings you Impact Resistance Tester for Paints – Direct, which is a renowned and standardized instrument used to test the quality of coating and paint applied on metal sheets. It determines the impact strength at which the coating will crack open and get damaged. This way it can estimate properties like coating adhesion and its elasticity. The equipment complies with ASTM D2794-93(2010) and ISO 6272-1:2011 testing standards. The Impact Resistance Test is usually a part of Paint and coating industry to check the crack development resistance.
The entire equipment is constructed using high-quality components and exhibits a rugged structure. There is a special sample locking arrangement in the platform. Once the metal sample is locked, the impact weight is set in the tube-like structure which guides the weight to fall straight on the sample. The impact height is adjustable up to 1-meter length. There is two impacters available – having 900 gm and 1000 gm weight. Post dropping a weight, a bulge is formed on the specimen with a hemispherical end. On deep observation of the sheet, one can notice if the coating has developed a crack or not.
As per the test results, the coating elasticity and adhesion are further studied and improved to stay for long on the substrate. This test is suitable for coatings which are applied on domestic as well as industrial metal objects and are mildly abused during their first year of normal use.