Capacities for Thermal Treatment of Pipeline Fitting Welds Upgraded at Rimera’s Urals Plant

16.10.2014



Experts at the Pipeline Bends Plant (SOT) are preparing to put into commercial service recently upgraded induction heating equipment.

Capacities for Thermal Treatment of Pipeline Fitting Welds Upgraded at Rimera’s Urals Plant

Capacities for Thermal Treatment of Pipeline Fitting Welds Upgraded at Rimera’s Urals Plant

As part of the upgrade performed to custom technical specifications, the induction heating unit UIT-50-2,4 has been fitted with coil inductors for thermal treatment of girth welds of stamped and welded tees with branch lines 159 to 720 mm in diameter. A closed-cycle cooling system was installed additionally. Following the upgrade, the equipment now can quickly heat up welds to over 1,000° С for high-temperature treatment of welds and relaxation of residual stress after welding.
“It is now much easier to install and remove the inductors. The heating time has shortened, and the process has become more stable and controllable,” Pipeline Bends Plant Executive Director Leonid Malamud comments on the results of the upgrade, adding: “The induction heating technology is vital to our production. Essentially, we are the industry's pioneers in using this operation to manufacture stamped and welded tees. Unlike the furnace thermal treatment process widely used in the industry, our technology is more economical and versatile, including when small product lots have to be processed.”
Pipeline Bends Plant experts have successfully completed testing of upgraded equipment and started putting it into commercial operation. The mechanical properties of the pilot tees have been tested to show high stability in accordance with the technical requirements of the industry. It is expected that the first commercial lot of products processed using the upgraded unit will be tees with a 1,020 mm main line and a 530 mm branch line to be supplied to Transneft Oil Company.

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