Altana Conical Mandrel Bending Tester Manuel d'utilisateur télécharger pdf (Page 12)

Bending a coated sheet metal over

a deﬁ ned radius allows an indication

of the elongation and adhesion of a

paint ﬁ lm at bending stress. The

ASTM and ISO standards describe

the test method by means of a

conical mandrel. The use of a

conical mandrel bending tester

enables testing of a large variety of

bending radiuses at the same time.

The conical mandrel consists of an

20 cm (8 in.) long metal cone with a

diameter decreasing from 38 mm

(1 1/2 in.) to 3.2 mm (1/8 in.).

The mandrel is mounted on a base

plate in a horizontal position. An

operating lever with a drawbar is

provided for bending the test panel

around the mandrel. The instrument

is also equipped with a device for

clamping the test panel.

Test in accordance with

ASTM D 1737

withdrawn in 1988 and replaced by:

ASTM D 522

DIN 53150

DIN EN ISO 1519

DIN EN ISO 6860.

1. General

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