To evaluate successful cleaners using ultrasonic energy
Date Run:
02/13/2004
Experiment Procedure:
Four cleaners were selected from the past trials for this wax. All products were used at full strength also in 250 ml beakers. All products were degassed for 5 minutes in a Branson 3510, 40 kHz ultrasonic tank. Twelve preweighed ceramic coupons were coated with client supplied wax, Zopher Mills Inc No 1563 Wax (mixture of waxes and resins). The wax was first melted using a Master Appliance heat gun in a beaker and applied directly to the coupon surface. The coupons were allowed to cool to room temperature before weighing a second time. Three coupons were cleaned in each solution for 30 minutes using ultrasonic agitation. Coupons were rinsed in tap water for 15 seconds at 120 F, followed by air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.
Trial Results:
All four products were successful in removing over 89% of the wax within 15 minutes of ultrasonic cleaning. Two products were tested at an additional 3 minutes. Both removed over 97% of the soil. The table list the amount soil added to the coupons, the amount remaining after cleaning and the efficiencies for each coupon.
Cleaner
Initial wt
Final wt
% Removed
Uni Clear
0.3416
0.0614
82.03
0.2421
0.0195
91.95
0.2496
0.0135
94.59
Bio T 300 B
0.2388
0.0090
96.23
0.3614
0.0397
89.01
0.2912
0.0050
98.28
D Limonene
0.3135
0.0616
80.35
0.2959
0.0192
93.51
0.3550
0.0288
91.89
Citrus Pure
0.2951
0.0014
99.53
0.2996
0.0083
97.23
0.4239
0.0095
97.76
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Either immersion soaking at an elevated temperature for 30 minutes or ultrasonic cleaning at room temperature for 20 minutes should remove all of the wax on parts. The next set of testing will focus on the second priority, the Stop Off.
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