Flange Face Reforming to Stop Leakage and Future Corrosion
Industry: Commercial Facilities (COMM)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Carbon steel
Customer Location: Dammam
Application Date: October 2022
Products: Belzona 1111 (Super Metal)
Problem: The flange faces were severely corroded and leaking.
Initial condition of flanges
Flange faces rebuilt and restored using forming technique
Application Situation
Welding alternative solutions were not viable for the customer due to safety and quality concerns. Belzona's flange face reforming technology was introduced to the customer, who was convinced after seeing successful previous applications and case studies.
Application Method
Grit blasting with a surface profile of 75 microns and a cleanliness of Sa2.5. A former equal to the flange dimension was prepared. Belzona 9341 Release Agent was applied to the former and allowed to dry for some time. A layer of Belzona 1111 was applied to both the flange face and released former, then the paste grade material was built up across the flange face using a Belzona applicator cut to a V-shaped contour to form a high peak in the centre line. The flange and former were bolted together and left to cure according to the IFU. When the former was removed, the required serration pattern appeared on the flange face face, as requested by the customer.
Belzona Facts
Belzona flange face forming was adopted due to its quick installation and convenience. The customer also avoided unnecessary downtime. In addition, the solution protects the flange faces from further corrosion effects.
