Devcon Maintenance and Repair Solutions - Sintemar

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Field Application Reports Products: Application Date: Customer: Industry: Location 138 Auger Repair Wear Guard Fine Load 300 January 2004 Co-Gen II, LLC Pulp Paper/Wood Products Problem: Augers are precise pieces of equipment that needs to be within specification in thickness and height to transfer the materials it was intended. The company saw that “hard-facing” the augers saw only a 14 months life expectancy and thy wanted more! The flights of the auger wear over time from abrasion of the material against the flight walls. In this application , the customer “hard-faced” welded one auger and coated a similar auger with Devcon’s Wear Guard Fine Load 300 Both augers went into service for 13 month to determine what method worked the best! As can be seen from the photos, the auger with Devcon shows virtually no wear! Measurements taken indicate how well the Devcon product has performed over hard-face welding. Solution: Starting at the drive end the numbers below show the wear of the four flights on the auger,. All numbers are in millimeters with nominal flight thickness being 5/8” or 16mm. These numbers show the wear over the past thirteen months Hard-face welded flights: 14mm 13mm 9mm 10mm Devcon coated flights: 22mm 20mm 21mm (22mm is slightly less than 7/8”) Devcon’s Wear Guard High Load 300 has proven itself to be superior in extending the life of the auger. After determining the remaining wear of the flights the Devcon coated auger would still have approximately 12 months of additional service before wearing out. Wear Guard has doubled the life of the auger! Besides the extended wearing qualities of Wear Guard Fine Load the cost to coat the augers were $1044 [with 45 minutes labor to coat] compared to hard-facing which was $694/each [with 5-7 hours to coat]. The total savings to coat all 12 augurs were $25,000! All new augers will be coated before allowed in service with Devcon’s Wear Guard Fine Load 300.
Field Application Reports Products: Application Date: Customer: Industry: Location 139 Ball Mill Repair Devcon® Irathane® 155 01/15/02 South American Copper/Gold mine Mining Problem: The customer had purchased a used milling line. The ball mill in the system was very worn on all surfaces, including the covers. This was due to defects in the internal coating, which allowed leakage of the pulp between liner and shell. The customer needed to restore worn dimensions to original condition, and prevent future problems. and used Wear Guard Fine Load on all worn areas. The whole surface was then coated with Irathane 155 as protection against possible future liner failure. Solution: Complete surface was blasted to white metal (SSPC-SP5). Surface was then cleaned with Cleaner Blend 300. When the surface was dry, eroded areas were repaired with Wear Guard Fine Load. Within 4 hours, the substrate was primed with SA-200 applied with airless spray equipment. This was allowed to dry for 3 hours, when Irathane 155 was applied, using 42:1 ratio airless equipment. Two coats of 155 were applied, achieving a total DFT of 2.5 mm. Repairs were made and future damage prevented, using two Devcon systems.
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Devcon Maintenance and Repair Solutions - Sintemar

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