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Common problems
(1) Wear resistance of abrasion resistance surface.
(2) Bending test to determine the minimum bending radius of the anodic oxide film which does not produce visible cracks (depending on the thickness of the sheet).
(3) The breakdown voltage breakdown voltage is the maximum voltage reached before sparking between the probe on the oxide film surface and the aluminium substrate under specified conditions.
(4) accelerated wear test for CASStest test with acetic acid, copper chloride and Sodium Chloride Solution. Cass (CASS) is the abbreviation of "copper containing salt spray test" in English.
(5) Kesternishtest accelerated corrosion test method in high temperature and humid atmosphere containing sulphur dioxide.
(6) Fackett test, or Ford anodic alumina corrosion test. This test was carried out by applying direct current to the oxide film in a definite electrolytic cell.
(7) Salt spray test, NSStest accelerated corrosion test in 5% (m/m) sodium chloride salt spray medium.
(8) Weather-resistant anodic oxide film can withstand long-term atmospheric exposure.
(9) Light resistance of light fastness colored surface under long-term illumination (excluding atmospheric effects).
(10) Bluecard Bluescale International Standard Card for Measuring Light Resistance of Dyes. The card consists of eight woolen fabrics with different blue degrees, each representing different light resistance.
(11) Grey scale is an international standard card with different intensity gray on the surface, which is generally used to estimate the color change.
(12) The allowable deviation of colourtolerance, colourlimits in the prescribed lighting and observation conditions when compared with the known standard colors.
(13) eddy current is a high frequency induction current. It is used to measure the thickness of non-conductive film on non-magnetic matrix metals (e.g. aluminium anodic oxide film).
(14) Quality of anodic oxide film on coatingmass unit surface area (cm2)
(15) Admittance test Admittance value of oxide film was measured by AC circuit. Admittance is the reciprocal of impedance.
(16) Impedance test impedance test. Apparent impedance of oxide film is measured by alternating current circuit. The impedance value is the reciprocal of the conductivity.
(17) Loss factor actor, the ratio of resistance component to capacitance component in dissipation factor impedance.
(18) The maximum electric field strength of dielectricstrength oxide film before breakdown. The unit is kilovolt per millimeter (kv/mm).
(19) Dyespot test, dyeaborptiontest and dyestaintest were used to test the dye absorption capacity of anodic oxide film under specified conditions. It is mainly used to evaluate the sealing quality.
(20) The ratio of reflected light to incident light.
(21) The ability of a brightness surface to reflect light (inaccurate terminology).
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