Trial #1
To test the efficacy of aqueous cleaners and detergents in removing machining oil from sample parts using ultrasonics.
Three sample parts of each part type were grouped together and assigned to one of each of the cleaners to be cleaned. The three sample parts of each part type were weighed together using a gravimetric balance and had their initial weights recorded. Each sample part was then immersed in the provided Swisscut Ortho NF-X US 24 Machining Oil for 2 minutes. During the 2-minute immersion in the oil, the parts were inverted twice to aid in the filling of blind holes and complex thread geometry. The parts were then removed and re-weighed in their groups of three to have their dirty weights recorded. The parts were then subjected to 5 minutes of unheated ultrasonics cleaning in their respective cleaner. Once removed from ultrasonics immersion, each part was individually tried utilizing a pressurized air stream for 30 secs.
| Cleaner
|
Part
|
Initial wt of cont.
|
Final wt of cont.
|
%Cont Removed
|
% AVG
|
| BG-Clean 402 10%
|
Sterile Nealing
|
0.0327
|
0.0014
|
95.72
|
95.41
|
| BLX
|
0.1119
|
0.0021
|
98.12
|
| Basel Screw
|
0.0158
|
0.0008
|
94.94
|
| Variobase
|
0.0605
|
0.0023
|
96.20
|
| BLT-NC
|
0.0589
|
0.0040
|
93.21
|
| BLC-WB
|
0.0751
|
0.0034
|
95.47
|
| Analog
|
0.0531
|
0.0038
|
92.84
|
| TLX
|
0.0678
|
0.0022
|
96.76
|
| Crystal Simple Green 10%
|
Sterile Nealing
|
0.0379
|
0.0000
|
100.00
|
96.38
|
| BLX
|
0.1065
|
0.0036
|
96.62
|
| Basel Screw
|
0.0193
|
0.0001
|
99.48
|
| Variobase
|
0.0632
|
0.0006
|
99.05
|
| BLT-NC
|
0.0651
|
0.0049
|
92.47
|
| BLC-WB
|
0.0896
|
0.0038
|
95.76
|
| Analog
|
0.0565
|
0.0032
|
94.34
|
| TLX
|
0.0657
|
0.0044
|
93.30
|
| Micro 90 2%
|
Sterile Nealing
|
0.0337
|
0.0000
|
100.00
|
97.98
|
| BLX
|
0.0997
|
0.0006
|
99.40
|
| Basel Screw
|
0.0169
|
0.0002
|
98.82
|
| Variobase
|
0.0581
|
0.0007
|
98.80
|
| BLT-NC
|
0.0584
|
0.0034
|
94.18
|
| BLC-WB
|
0.0737
|
0.0022
|
97.01
|
| Analog
|
0.0425
|
0.0004
|
99.06
|
| TLX
|
0.0757
|
0.0026
|
96.57
|
| Alconox 2%
|
Sterile Nealing
|
0.0315
|
-0.0005
|
101.59
|
101.26
|
| BLX
|
0.1048
|
-0.0014
|
101.34
|
| Basel Screw
|
0.0171
|
-0.0015
|
108.77
|
| Variobase
|
0.0785
|
-0.0016
|
102.04
|
| BLT-NC
|
0.0681
|
0.0001
|
99.85
|
| BLC-WB
|
0.0997
|
-0.0003
|
100.30
|
| Analog
|
0.0535
|
0.0017
|
96.82
|
| TLX
|
0.0623
|
0.0004
|
99.36
|
Parts with small threading (BLT-NC, BLC-WB, and TLX) as well as the Analog (due to its wide circumference) parts were the most difficult to fully dry with the pressurized air blow off. This could account for lower cleaning efficacy of these parts compared to other parts.
Several of the parts cleaned with Alconox show a cleaning efficacy percentage larger than 100%. This could be indicative of incompatibility between the Alconox and the substrates of the sterile nealing, BLX, basel screw, variobase, and BLC-WB parts.
The BG-Clean 402, Crystal Simple Green, and Micro 90 can be considered effective as they all showed over 75% efficacy. The Micro 90 showed the highest overall removal of 97.98%. The Alconox may be incompatible with certain substrates leading to the degradation of the surface.
No relation