Aluminum can be cleaned safely with controlled chemistry and temperature; the main risk is staining from strongly alkaline or hot baths.
The staining risk
Strongly alkaline or hot baths can stain or etch aluminum, so the chemistry is chosen to be compatible and the temperature is controlled.
Neutral or aluminum-safe cleaners are commonly used.
- Strongly alkaline risk
- High temperature risk
- Aluminum-safe chemistry
Matching the process
Cast aluminum, machined aluminum and different alloys behave slightly differently. The chemistry, temperature, frequency and time are confirmed with the actual part.
Parts are rinsed and dried to avoid marks.
Common aluminum parts
Housings, heat sinks, die-cast components, machined parts and automotive and electronics parts are commonly cleaned in aluminum-safe baths.
Heavy oil may use filtration and skimming.
Validation and inspection
Clean a representative part and inspect the surface for staining or change before production, and keep the same settings in the production bath.
Safety and chemistry data are reviewed before use.
Quick Answers
Frequently asked questions
Strongly alkaline or hot baths can; aluminum-safe or neutral chemistry at controlled temperature is used instead.
Yes. Die-cast aluminum parts are cleaned with controlled chemistry and temperature, validated for the alloy.
Through compatible chemistry, controlled temperature, thorough rinsing and prompt drying.
