Devcon Maintenance and Repair Solutions - Sintemar

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Field Application Reports Products: Application Date: Customer: Industry: Location 118 Valve Gate Repair Titanium Putty / Brushable Ceramic / Flexane® 80 Putty 1/19/97 Houston Light and Power Utility Power Generation Problem: This 1.5 meter cooling system valve would receive extreme abrasive wear from a slurry of sand and water. The wear was concentrated on the valve body seal area and the on the edges of the valve gate. The wear was so severe that the valve no longer sealed due to a 1/2” gap between the gate and seal. The previous method of repair was to simply replace when required. Valve replacement cost was estimated to be $45K. Solution: Complete valve assembly was sandblasted to a SSPC-SP5 white metal finish. All surfaces were then chemically cleaned using Cleaner Blend 300. Titanium Putty was applied to the valve gate edges rebuilding the missing eroded metal. Following a partial cure of Titanium Putty, (2 hours), Brushable Ceramic was applied to a thickness of 25 mils. Following a partial cure of Brushable Ceramic, (4 hours), a second coat of Brushable Ceramic Red was applied, again to a thickness of 25 mils . Titanium Putty was applied to the seal support area rebuilding the missing eroded metal. Following a partial cure of Titanium Putty, (2 hours), both FL10 and FL20 Primers were applied and each allowed to cure or dry for 15 minutes. Using both primers improved bonding properties of Flexane 80 Putty from 25 pli to 50 pli.. Flexane 80 Putty was applied to replace the worn missing rubber seal. Vaseline was applied to the gate as a release agent, and then closed. Closing the gate compressed the uncured Flexane 80 Putty, forming a new urethane seal. Following a full cure of the Flexane 80 Putty, (24 hours), the gate was opened. All remaining exposed metal was coated with a final coat of Brushable Ceramic. Brushable Ceramic encapsulated repair areas and provided an abrasion and corrosion resistant, low co-efficient to friction protective coating. Devcon’s repair cost was $3K.
Field Application Reports Products: Application Date: Customer: Industry: Location 119 Lining Victaulic® Elbows Flexane® 80 Liquid & Putty June 2002 South American Copper Mine Mining Problem: These Victaulic ® brand elbows came from the supplier without a lining. They wear quickly in mining applications, such as mineral pulp transport lines, and need a lining to withstand the abrasion. The lining available from the OEM is very expensive, more than the original elbow! Solution: The ends of the elbow were milled 2mm and deburred. The metal substrate was grit blasted and cleaned with Cleaner Blend 300, and primed with SA-200 primer. When this was dry, UU-66 primer was applied and allowed to dry. The entire interior surface was then coated with Devcon Flexane 80 putty and liquid.
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Devcon Maintenance and Repair Solutions - Sintemar

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