Cleaning Orifice Disc’s (Plate)

Process for cleaning orifice disc’s:

The Kemet 30 cleaner was filled with tap water then diluted with a 5 % concentration of Rodaclean 2018 cleaning fluid. The cleaner was degassed for 10 minutes and allowed to heat up to 70°C.

A batch of blank orifice discs was loaded into the Kemet 30 basket which has been dipped in a Halar coating. This Halar coating is a chemical resistant plastic ensuring the parts do not come into contact with the metal basket.

The parts were cleaned for 10 minutes in the Rodaclean; once the ultrasonics is turned on you can see the combination of the cavitation and chemistry removing the contamination effectively. The basket was manually dunked slowly at the middle and last minute of the cycle, due to the parts being heavily contaminated this helps to remove any surface residue.

The parts were then rinsed in tap water for 1 minute with ultrasonic cavitation to ensure a good rinse; this is necessary due to the initial wash in Rodaclean 2018. Being a strong alkaline it is important to ensure the parts a thoroughly rinsed to remove any soap residue that may cause staining.

An additional rinse in deionised water is necessary to ensure a spot free finish with no water marks.

Finally the parts were dried in a Versa hot air drying unit for 10 minutes at 75C; upon inspection the parts show no signs of contamination.

The process was repeated on the following two batches using the exact same parameters producing excellent results.

Basic System recommendation based on this test on a batch throughput of 60-100 parts per basket.

Versa Genius 50 30Khz ultrasonic with basket dunking
Versa Genius 50 30Khz ultrasonic
Versa Genius 50 40Khz ultrasonic
Versa Genius 50 hot air dryer
1 x Halar coated Versa 50 basket

Note: Kemet recommend filtration on the initial wash tank to help keep operating cost down.