To further evaluate the one cleaner capable of removing the wax from the previous trial.
Date Run:
06/29/1999
Experiment Procedure:
The cleaner from the previous trial was further examined to enhance the cleaning efficiency. Water was also tested in the ultrasonic cleaning method. Table 1 lists the cleaning solution used. By altering the parameters of the cleaning cycle, several different operating conditions were created and examined. Temperature (room and 130 F), time (5 and 10 min) and agitation (Immersion and Ultrasonics) were the specific parameters investigated.
Three coupons were cleaned for each set of parameters, rinsed at 120 F for 30 seconds, and dried at room temperature for two hours. CONTAMINATING PROCESS USED: Wax was heated using a Master Appliance Corp, Hot-air gun model HG at 500 F. Coupons were allowed to cool to room temperature.
Trial Results:
A couple of cleaning methods proved successful in the removal of the wax from the coupons. Ultrasonics (Crest 40 kHz ultrasonic tank model 4Ht 1014-6) at room temperature for five minutes was very effective, as was immersion cleaning at 130oF for ten minutes. Table 2 lists the operating conditions and efficiencies.
Table of Cleaning Efficiencies
Cleaner
Envirosolution Bio-T Max
Water
Time
10
10
5
5
5
10
Temp
Room
130
130
Room
room
room
Agitation
Immersion
Immersion
Immersion
Ultrasonic
Ultrasonic
Ultrasonic
Coupon 1
8.08
57.19
65.86
99.72
0.38
4.14
Coupon 2
1.23
58.96
32.09
99.65
0.41
4.71
Coupon 3
6.06
78.91
45.67
99.84
0.58
5.23
Ave
5.12
65.02
47.88
99.74
0.46
4.69
Std Dev
3.52
12.06
16.99
0.09
0.11
0.54
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Envirosolutions Bio-T Max in conjunction with ultrasonic energy removed nearly all of the wax from the coupons. The heated cleaning solution was moderately successful in removing the contaminant after ten minutes. A longer soaking time and or higher temperatures could further increase the efficiency of the cleaning solution. Client supplied parts will be cleaned next and returned for inspection.
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