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To evaluate alternative cleaners on second supplied contaminant.
Six products from the previous trial were selected and used at full strength. The cleaning solutions were all heated to 130 F on a hot plate.
Eighteen preweighed alloy coupons were coated with the second supplied lubricant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded and efficiencies were calculated for each coupon cleaned.
Five of the six products removed over 95% of the lubricant. Three of these removed over 99%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
|Cleaner||Initial wt||Final wt||% Removed|
|Soy Gold 1100||1.4978||0.0286||98.09|
|D Greeze 500 LO||2.1602||0.1368||93.67|
Success Rating:Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
The five products that removed over 95% will be tested on the third supplied contaminant under the same conditions.