The SP Series Cylindrical Bend Test is designed to perform tests according to the latest ISO standards. ISO 1519: “Assessing the resistance of a coating, paint, varnish or related products to cracking and/or detachment from a surface when, subjected to bending around a cylindrical mandrel under standard conditions”. |
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The instrument consists of a base plate, panel holder with clamp, a series of mandrels and the handle/bending mechanism. The base should be secured to a suitable work surface, allowing the operator to turn the handle smoothly during a test. The diameter of the mandrel to be used depends upon the test specifications
The instrument consists of a base plate, panel holder with clamp, a series of mandrels and the handle/bending mechanism. The base should be secured to a suitable work surface, allowing the operator to turn the handle smoothly during a test. The diameter of the mandrel to be used depends upon the test specifications. If a ‘point of failure’ test is carried out, successively smaller mandrels are used until a coating failure is observed. The panel holder accepts panels measuring up to 50mm (2″) wide, which are held firmly in place by the clamp. BS EN ISO 1501519 calls for panels of 50mm x 100mm, of a thickness of up to 1mm. The positions of the panel holder and the bending mechanism are adjustable, thereby ensuring that the panel is bent firmly around the surface of the mandrel. A nylon pad is fitted to the bending mechanism where it makes contact with the panel, to ensure the mechanism slides smoothly over the panel.
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