P13656 Week 6 - SDII Update
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Transcript of P13656 Week 6 - SDII Update
P13656Week 6 - SDII Update
Meeting Agenda• Variable Testing
o Discuss resultso Possible future steps
• Corrosion & Resistance Testingo Results and possible influence on the project
• Cleaning Unit Update
• Future Steps
Variable Testing• Performed at different
starting temperatures• Samples were
submerged for 1.5-6 hours
• Used CTI hydrogen peroxide solution
• Coating removal was visible
Variable Testing• Testing Schedule
Variable Testing• Testing Data
Visible Results• Increased time in
ultrasonic unit decreased amount of coloration
• As temperature increased, rate of stripping increased slightly
Increase in Temp
Increase in Time
Conductivity Testing• Measured
conductivity of peroxide solution from variable testing
• Test results obtained
• Colorimetry and correlations of base values for check
Conductivity Testing
Conductivity Summary• Correlation between visual results and
conductivity resultso Colorimetry also expected to support these results
• Next stepso Solution lifetime/optimal replacement period
• Potential use of conductivity to standardize solution replacement
Corrosion Testing• Used weight loss
method
• Measuring mass change in stainless steel wire sampleso AWG 18 - 316L and
430 SS wireo 6 hour exposure
periodo Varied conditions
and solutions
Corrosion Test Condition MethodologyStill bath (20 C) filled with:• H2O - Control• H2O2 - Baseline effect of hydrogen peroxide
Sonic bath (50 C) filled with:• H2O - Control• H2O2 - Typical operation• H2O2 + Cl (PVC shavings) - Worst case
T = 20 C
T = 50 C
Significance of Corrosion Testing Results• Protection of tank integrity and estimation of
tank lifetimeo Direct vs. indirect stripping methodso Calculation of tank lifetime when used with certain
solutions
• Protection of the base metal of the producto Limit uncoated exposure time in ultrasonics
• Chlorides (PVC shavings) may have greater effect over longer time frameo Recommend using HCl for future testing
Ultrasonic Unit• Unit has been set up in the test area and is
working properly• Heater control located on tank
Function Generation Unit• Power selection
• Timer
• Sweep function varies power
• Overrides unit's onboard controls (excepting heat)
• User manual is on EDGE:
https://edge.rit.edu/edge/P13656/public/Phase_II_Documents/Pete/SC%20Operator's%20Guide.pdf
Future Steps• Prepare detailed instruction manual for the
cleaner• Process conditions and optimization
• Test samples in the full-sized unit (use more realistic samples if available)
• Technical paper and poster for Imagine RIT