Trial Purpose:
To test the efficacy of the VCN in removing soil from complex/intricate parts
Date Run:
06/01/2023Experiment Procedure:
Three aluminum pre weighed complex parts and three stainless steel complex parts were used as coupons. The coupons were soiled by swabbing Geartronics soil all over the parts, making sure to get the soil into any holes or divots in the parts. The dirty weights of all coupons were then recorded and visual rankings according to the key shown below were recorded. The coupons were then subjected to a one-minute heated cycle at 140 degrees F in the VCN using LF2100 1% concentration. The coupons were then removed and left to air dry overnight. The next day the clean weights of the coupons were recorded, and visual rankings were recorded.
Visual Rankings Key
1= 100% of soil removed
2= 75% of soil removed
3= 50% of soil removed
4= 25% of soil removed
5= 0% of soil removed
Trial Results:
| Substrate | Initial wt of cont. | Final wt of cont. | %Cont Removed | % AVG | % Overall |
| Aluminum | 2.0996 | 0.0761 | 96.38 | 98.22 | 97.54 |
| 1.7808 | 0.0082 | 99.54 | |||
| 1.0941 | 0.0137 | 98.75 | |||
| Stainless Steel | 0.6915 | 0.0121 | 98.25 | 96.86 | |
| 7.4525 | 0.1754 | 97.65 | |||
| 1.2535 | 0.0665 | 94.69 |
| Substrate | Dirty Visual | Clean Visual | AVG Clean Visual | AVG Overall |
| Aluminum | 5 | 1 | 1.0 | 1.42 |
| 5 | 1.0 | |||
| 5 | 1 | |||
| Stainless Steel | 5 | 2 | 1.8 | |
| 5 | 2 | |||
| 5 | 2 |
Observations:
The VCN sometimes struggles with parts that have holes/divots that don't cut all the way through the part. It should be noted that for these particular parts, the orientation that the part is placed in to the VCN at matters (the hole or divot should be facing downwards)
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.Conclusion:
The VCN method was successful in removing Geartronics soil from complex aluminum and stainless steel parts with LF2100 1% concentration.
