Conical Bending Mandrel

Presto Conical Bending Mandrel is a laboratory apparatus to bend coated test panels over a conical shaped mandrel in order to assess the elasticity or resistance of a coating paint or varnish to cracking; elongation and / or detachment from a metal test panel in accordance with ISO 6860 and ASTM D522.

The conical shape of the bending area allows the deformation of the test panel and examination of the elasticity range of a coating.

The Conical Bending Mandrel Tester is a compact, robust instrument made of enameled steel which is suitable for table-top use. The conical mandrel and the pivoted pressure roller running parallel to the surface of the cone are made of stainless steel. The clamping device is equipped with a cam lever which ensures a rapid and uncomplicated change of specimens. The bending mandrel test is a commonly used testing method for assessing the flexibility and the adhesion properties of coatings when these are subjected to bending stresses.x