Ultrasonic Cleaning Graphite & Aluminium - Case Study

Customers Criteria: Free from all contamination
Component: Moulds
Material: Aluminium/Graphite
Contamination prior to cleaning: Dried oils/emulsion in small holes

Machines used for cleaning Cleaning Agent Temperature(s) Concentration
Versa 120 30Khz Ultrasonic with basket dunking Galvex 17.30N 60°C 3%
Versa 120 Rinse with air bubble agitation Tap water 30°C 100%
Versa 120 40Khz Ultrasonic with basket dunking Deionised water 40°C 100%
Versa 120 Dryer N/A 100°C N/A

Process for cleaning Graphite/Aluminium Moulds

Stage 1 – Ultrasonic wash with basket dunking: Galvex 17.30N was used as its compatible with both materials and has excellent emulsifying properties on machining oils and has a long bath life. The tank was allowed to reach the required temperature and degassed before cleaning. The part was placed inside the basket and given a 10-minute cycle time, Basket dunking was used to aid in flushing out the blind holes. The part was then turned and cleaned for an additional 10 minutes to ensure optimal results.

Stage 2 –Air bubble rinse with Auto purge: Next the part was rinsed in tap water for 2 minutes. The air bubble agitation feature was active for the duration of the treatment time to help remove any remaining debris and soap residue.

Stage 3 – Deionised water rinse with basket dunking: To ensure a spot free finish, an additional finishing stage is required using DI water combined with a 40Khz ultrasonic. Tap water contains minerals which can cause staining, by finishing in DI water, we ensure these minerals are removed, maintaining optimal results.

Stage 4 – Hot air drying: Lastly, the part was dried in the Versa hot air dryer for 10 minutes. Results: The part is visually cleaner on the outside with the oily marks around the collar removed.

Before cleaning Graphite/Aluminium

Before cleaning graphite aluminium

After cleaning Graphite/Aluminium

After cleaning graphite aluminium

kemet ISO 9001

BSI number Q05919

Over 85 years of service to industry

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