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Trial Number 11

Client Number 218

Project Number 1

Trial Purpose:

To evaluate past cleaners on last supplied contaminant

Date Run:

03/09/2004

Experiment Procedure:

Seven cleaners were selected from the laboratories database of past testing based on supplied data from client. Four aqueous based cleaners were diluted to 10% using DI water in 250 ml beakers. Three semi-aqueous products were used at full strength also in 250 ml beakers. An eighth product was added as the client's current cleaner and diluted to 10%. All eight products were heated to 130 F on a hot plate. Twenty-four preweighed ceramic coupons were coated with client supplied dye, Magnaflux Zyglo Penetrant ZL-60D (8042-47-5, 69227-21-0, 68131-40-8, 37311-02-7, 37251-67-5, 52232-09-4, 111-05-7, 75-28-5). The dye was applied directly to the coupon surface using a swab and then weighed a second time. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Coupons were rinsed in tap water for 15 seconds at 120 F, followed by air blow off at room temperature for 30 seconds. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.

Trial Results:

Seven of the eight products removed over 92% of this contaminant using immersion cleaning for five minutes.  The other product removed just under 80%.  The table below lists the amount of contaminant added, the amount remaining after cleaning and the efficiencies for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Liquinox 0.0835 0.0031 96.29
  0.0354 0.0010 97.18
  0.0343 0.0007 97.96
SC Aircraft 0.0620 0.0006 99.03
  0.0334 0.0004 98.80
  0.0655 0.0018 97.25
Micro 90 0.0579 0.0043 92.57
  0.0547 0.0006 98.90
  0.0649 0.0090 86.13
Aquavantage 1400 0.0574 0.0018 96.86
  0.0469 0.0023 95.10
  0.0880 0.0082 90.68
E3HB 0.0692 -0.0001 100.14
  0.0635 0.0004 99.37
  0.0688 0.0001 99.85
Aeromaster 0.0404 0.0067 83.42
  0.0464 0.0063 86.42
  0.0474 0.0149 68.57
Ink Zapper 0.0972 0.0006 99.38
  0.0588 0.0006 98.98
  0.0871 0.0005 99.43
DBE 6 0.0587 0.0009 98.47
  0.0508 0.0011 97.83
  0.0864 0.0008 99.07

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Since seven of the eight products removed over 92% of the contaminant using immersion cleaning only, ultrasonic testing will not be performed. Piloting of cleaning products on actual parts should be conducted in order to verify results found in the laboratory setting.

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