In the power generation and nuclear industry, low- and medium-alloy steels such as SA 213 T91 and SA 335 P91 are chosen for their high strength but are prone to cracking during welding. Preheating and post-heating minimizes that potential.
To meet the requirements of inert gas purging when temperatures exceed 392ºF (200ºC), purge systems capable of withstanding such high temperatures for lengthy periods are necessary.
Huntingdon Fusion Techniques HFT’s HotPurge is an inflatable purging system for high-strength steel pipe joints where pre- and post-weld temperatures of up to 572ºF (300ºC) for lengthy periods. The inflatable seals at each end of the system are made from flexible but thermally resistant materials, and the central collar is also temperature-resistant.
Manufactured in sizes 6 inches to 88 inches (150 mm to 2,235 mm), the system can be used repeatedly to keep oxygen levels below 100 parts per million (ppm) throughout the welding cycle, ensuring oxidation-free welds free of imperfections caused by rapid heating and cooling.
Each system comes with a weld purge monitor connection for monitoring oxygen levels; a PurgeGate for preventing overinflation of dams; and RootGlo, a central band that illuminates the inside of a pipe for 20 hours.
Lucifer Builds Custom Dual-Chamber Furnace
A Midwest company has put a new Red Devil unit into service to heat treat steel parts in-house. Cost effective and customized with safety features, the RD8-KHE18 furnace offers space-saving working dimensions of 12 x 14 x 18 inches in both chambers.
Smart Visual Inspection Technology Meets Metrology Products
A new Mitutoyo-Kitov agreement will lead to the integration of Kitov technologies in Mituoyo’s metrology solutions. Look for future development of more solutions to come from the new partners as they combine Mitutoyo’s measurement technologies with Kitov’s planning and inspection technologies.
Unison Ups Product Support Scope, Accessibility with ‘UltimateCare’
The rebranded service program facilitates selection of the right maintenance solutions, and also offers additional services such as CAD modellng, component prototyping and process optimization. Customers can choose services ala-carte or in tailored, bundled agreements.