Devcon Maintenance and Repair Solutions - Sintemar

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Field Application Reports Products: Application Date: Customer: Industry: Location 41 Pump Impeller Repair Titanium Putty / Brushable Ceramic 26/6/93 Douglas Pump Repair Utility Power Generation Problem: This impeller from a primary water intake pump would receive extreme wear from a combination slurry of sand, soil and water. The previous method of repair was to simply replace when required. Impeller replacement cost was estimated to be $4K. Solution: The impeller was firstly sandblasted to a SSPC-SP5 white metal finish. All surface areas were then chemically cleaned using Cleaner Blend 300. All worn cavitated areas deeper than 1/8” were filled using Titanium Putty. Following a partial cure of Titanium Putty, (2 hours), Brushable Ceramic was applied to a thickness of 30 mils in tow coats at 15 mils each. Brushable Ceramic encapsulated the repair areas, and provided a long lasting, abrasion resistant, low co-efficient to friction protective surface coating. Devcon’s repair cost was $500.
Field Application Reports Products: Application Date: Customer: Industry: Location 42 Coupling Bolt Repair Titanium Putty 1/2/92 Edison Sault Electric Company Utility Power Generation Problem: These coupling bolts used to join the turbine and generator together would receive extreme abrasive wear from the secondary leather coupling. The past repair method was to remanufacture new coupling bolts when required. Solution: Coupling bolts were grooved on a lathe to a depth of 30 mils. Grooving improves mechanical bonding properties of Titanium Putty. Repair area was then chemically cleaned using Cleaner Blend 300. As the coupling bolts rotated slowly on the lathe, Titanium Putty was applied to a thickness 65 mils over the desired dimension. A heat lamp was positioned over the repaired area and the coupling bolt was rotated continually for 1 hour. Rotating eliminates the risk of Titanium Putty sagging. Following a 1 hour cure, Titanium Putty was machined to original coupling bolt specification using carbide tooling.
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Devcon Maintenance and Repair Solutions - Sintemar

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