4 ways to distinguish the quality of electronic cigarette aluminum casing

The aluminum casing of electronic cigarettes is very common, so how can we distinguish the quality of the aluminum casing in ordinary applications?

CANNABAR Delta 8 disposable aluminum casing

1、Marking check

Whether the aluminum profiles and packaging are marked with product standard code and production license number, etc.

2、Surface quality

The surface of aluminum profile should be clean and not allowed to have defects such as cracks, peeling, corrosion and bubbles, but also not allowed to have defects such as corrosion spots, electric burns, black spots and oxide film peeling.

3、Oxide film thickness

The oxide film of aluminum profile is formed in anodic oxidation, which has protective and decorative effects, and can be detected by eddy current thickness gauge.

4、Quality of sealing hole

There are many voids on the surface of aluminum profiles after anodic oxidation, and if they are not closed or badly closed, the corrosion resistance of aluminum profiles will be reduced. The common methods for sealing quality inspection are acid dip method, conductive method and phosphor tyrosine method.

More reading: Two common gradient processes in the application of e-cigarette: anodizing and spraying

The acid leaching method is generally used in the on-site inspection, that is, the surface of the aluminum profile is scrubbed with acetone to remove oil and dust, and nitric acid with a volume ratio of 50% is dropped onto the surface and gently scrubbed. After 1 minute, the nitric acid is washed with water, and then wipe Dry, drop a drop of medical purple syrup on the surface, after 1 minute, wipe off the purple syrup and thoroughly clean the surface, carefully observe the traces left, the aluminum profile with poor sealing will leave obvious traces, and the heavier the traces, the better the sealing quality. the worse.