Browse Client Types

Browse past lab clients by general industry sectors

Trial Number 4

Trial Purpose:

To evaluate cleaners for removal of oils

Date Run:

06/22/1995

Experiment Procedure:

Three cleaners will be tested; WR Grace Daraclean 294xx at 10%, Oakite Inproclean #3800 at 10% and a 10% Oakite #3800 solution with a 2% additive of Oakite Ladd. The Oakite Ladd supposedly will increase cleaning efficiency while reducing foam rates, so it will be interesting to see how well the Oakite Ladd additive performs.
The coupons were weighed before and after contamination. Cleaning was performed in an air sparged beaker at 150 F for 20 minutes. The coupons were then rinsed for 5 minutes at 150 F in a tap water rinse. The coupons were dried under an air knife for 2 minutes and then placed in a convection oven for 90 minutes. The coupons were then allowed to cool down overnight and then weighed in the morning. After the final weighing, the coupons were analysed under a black light to check for flourescing of any residual oils or wax.

SUBSTRATE MATERIAL:#1- 6061 Aluminum Coupons, #2- 110 Copper Coupons, #3- 260, Brass Coupons, #4- Steel boiler plate parts
CONTAMINANTS:Wax, ITW Safetap, Steco Corporation Tap magic Al cutting fluid, Park Chemical Corporation Haze Quench Oil
CONTAMINATING PROCESS USED: Coupons were dipped in wax and oils were brushed onto coupons

Trial Results:

The Oakite 3800 performed exceptionally once again. The steel and Aluminum coupons were totally wax free and no noticable oil residue. There was a slight wax buildup on the copper and brass coupons (the best bet would be to increase time). The foaming is definately the big problem with the Inproclean #3800.

The Ladd additive did an excellent job of reducing the foam level. Cleaning was a little less effective than the Oakite #3800 alone but it still was excellent. There was no wax or oil on the Steel and Aluminum coupons. There was some slight residue on the copper coupon and quite a bit of wax remaining on the brass coupon. There was no etching on any of the coupons. Might want to increase cleaning time to remove residual wax.

The Daraclean 294xx was definately the least effective. Wax residue was noticed on all coupons and excessive amounts of tap magic oil was noticed on the Brass coupon.

EXPERIMENTAL DATA LOG

                                                    GRAVIMENTRIC ANALYSIS

 

sample # and substrate

 

clean mass (g)

 

mass with contamination (g)

 

mass after cleaning (g)

 

contaminant removed (g)

 

Percent Removal

 

#32 Steel

 

127.5046

 

128.2982

 

127.5043

 

0.7939

 

 100.04%

 

#5385 Brass

 

34.5390

 

35.0465

 

34.5394

 

 0.5071

 

 99.92%

 

#13 Aluminum

 

20.9996

 

21.9484

 

20.9997

 

 0.9487

 

 99.99%

 

#3527 Copper

 

35.3530

 

35.9061

 

35.3556

 

 0.5505

 

 99.53%

 

#17 Steel

 

128.3883

 

129.2071

 

128.3876

 

 0.8195

 

 100.09%

 

#3130 Brass

 

34.3117

 

34.8061

 

34.3148

 

 0.4913

 

 99.37%

 

#14 Aluminum

 

21.0161

 

21.7392

 

21.0170

 

 0.7222

 

 99.88%

 

#3276 Copper

 

35.3279

 

35.8522

 

35.3310

 

  0.5212

 

 99.41%

 

#19 Steel

 

123.1888

 

123.9450

 

123.1946

 

 0.7504

 

 99.23%

 

#7624 Brass

 

34.7619

 

35.2642

 

34.7650

 

 0.4992

 

 99.38%

 

#15 Aluminum

 

20.9807

 

21.6497

 

20.9842

 

 0.6655

 

 99.48%

 

#3357 Copper

 

35.3363

 

35.8803

 

35.3464

 

  0.5339

 

  98.14%

 

ITALICS- Oakite Inproclean #3800

BOLD- Oakite Inproclean #3800 with Oakite Ladd additive

PLAIN- WR Grace Daraclean 294xx

Success Rating:

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

Conclusion:

This trial was successful in the fact that the foam reduction on the Inproclean #3800 was reduced with the Ladd additive.  The only problem is the slightly lower cleaning efficiency produced by the Ladd additive.  We might want to think about increasing the concentration up to 15% or trying the Oakite Inproclean #2000 which we should receive next week.

Save Report as a PDF