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Trial Number 9

Trial Purpose:

To find cleaners for oil and abrasive removal

Date Run:

02/04/2003

Experiment Procedure:

Five products were selected from the lab's database based on previous testing results. A sixth cleaner was selected based on supplied client data. The semi aqueous terpene was used at full strength in a 600 ml beaker. The other five products were diluted to 5% using DI water in 600 ml beakers. All six products were heated to 120 F on a hot plate.
Eighteen preweighed coupons were coated with Speed Fam Industrial Applications Vehicle 210 with Boron Carbide abrasive using a hand held swab. The oil/abrasive mix was forced dry using a Master Appliance Heat Gun at 500 F for 3 minutes. Coupons were allowed to cool to room temperature and weighed a second time. Three coupons were immersed in each solution and cleaned for 5 minutes using stir-bar agitation, rinsed in tap water for 15 seconds at 120 F and dried with the heat gun for 30 seconds at 500 F. Once coupons were cooled to room temperature, final weights were recorded and cleaning efficiencies were calculated.

Trial Results:

Five of the six products removed over 85% of the oil/abrasive mix within five minutes of cleaning. Two products, Safety First and Polyspray Jet 790 XS removed over 95%. The table below lists the amount of oil/abrasive applied and removed for each coupon.

Table 1. Oil/Abrasive Removal

Cleaner Initial wt Final wt % Removed
Safety First 0.053 -0.0006 101.13
  0.1152 0.0042 96.35
  0.111 -0.0008 100.72
Formula 815 GD 0.1113 0.0159 85.71
  0.1257 0.0089 92.92
  0.143 0.0093 93.50
Amberclean L12 0.1149 0.0127 88.95
  0.137 0.0297 78.32
  0.1101 0.0069 93.73
LPS Precision Clean 0.1441 0.0218 84.87
  0.115 0.0289 74.87
  0.1259 0.0057 95.47
California Parts Washer 0.1711 0.0322 81.18
  0.1218 0.0385 68.39
  0.127 0.0486 61.73
Polyspray Jet 790 XS 0.1195 0.0009 99.25
  0.1126 0.0098 91.30
  0.0811 0.001 98.77

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 five successful products will be used in the next trial with the aluminum oxide based abrasive.  Cleaning times may be increased to improve efficiency.

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