Sample description: This anodized aluminum alloy part has many holes on the surface. Could be a part in vacuum sputtering or plasma dry etching equipment. A layer of unidentified brown substance was deposited on the surface.

Place the part in 90°C hardening ink remover ACHM04-H1 and soak for 60 minutes.

When it was taken out, it was found that the unidentified brown substance deposited on the surface of the part had faded.

Repeat the test. Put this aluminum alloy part in 90℃ hardening ink remover ACHM04-H1, soak for 60 minutes. The results were tested again, and it was found that the unidentified brown substance deposited on the surface had faded.

Wipe it with a lint-free cloth and find that some brown substances can be wiped off. But still can't clear it completely.

Results and discussion:

6.1 Hardening ink remover ACHM04-H1 can effectively remove various organic polymers such as epoxy, PU, polyimide, acrylic, etc. Judging from the test results, the brown substance may contain hardened organic polymers.
6.2 Although the hardened ink remover ACHM04-H1 can remove part of the brown matter, it cannot be completely removed. Therefore, it is recommended to clean the part with ACHM04-H1 every 1~10 times, or every 7 days after operation. Avoid long-term and repeated cracking and aggregation of brown substances on the aluminum alloy parts, forming too thick deposits that are difficult to remove.