Rotec purchases Seco/Warwick high vacuum brazing technology

The Seco/Warwick solution will be the first system delivered to this customer and the only one on the Russian market dedicated to the production of complex parts containing welded honeycomb seals. (Courtesy: Seco/Warwick)

Rotec, Russia’s only facility that manufactures welded honeycomb seals, has purchased a Seco/Warwick vacuum furnace system that will let Rotec expand the range and volume of manufactured products.

The Seco/Warwick technology solution improves the surface quality of products after brazing, preventing oxidation and discoloration. The central application for the Seco/Warwick vacuum furnace equipped with high vacuum (HPGQ) capability will be soldering parts for the aerospace industry and turbine manufacturing. Seco/Warwick high vacuum systems are highly adaptable to a wide variety of processes characterized by shorter cycle times, increased throughput and precise process monitoring.

This solution will significantly improve the quality of the surfaces of the treated metals in terms of deformation, color, oxidation, and repeatability of the process, which is a solution to the basic problems involved with vacuum brazing. The heat-treatment process results must meet the high standards of AMS2750E and AMS2769A.

The Seco/Warwick system is designed with several interacting features:

  • A chevron-type deflector will be placed on the diffusion pump, which will reduce the reverse stream of oil vapor from the diffusion pump to the furnace.
  • The addition of a chiller to improve the efficiency of the diffusion pump.
  • A special system design limiting the condensation of water vapor from the air when opening the furnace. This unique design enables the customer to get a cleaner process by preventing the oxidation of the surface of the part; in addition, the pumping time is shorter and the vacuum level is higher.
  • A dew point sensor provides continuous gas quality monitoring throughout the process.

“Clients of highly demanding industries evaluate the experience, certificates, and references of a partner because they must be sure of the quality of the contractor’s work. There is no shortage of credentials for Seco/Warwick. Our clients set their standards high and expect the highest quality equipment and services that will meet both restrictive industrial standards and their expectations in terms of the technology implemented. In the aerospace and energy industries where standards are set particularly high, meeting such requirements would not be possible without the regular implementation of product and technology innovations,” said Maciej Korecki, vice president, vacuum furnace segment Seco/Warwick.

Rotec specializes in design and turnkey construction of complex power-engineering facilities and infrastructure, the development and commercial operation of the hardware-software analytic package for monitoring and predicting the condition of industrial equipment (PRANA system), the development and production of components for the aviation and power engineering applications, high-efficiency supercapacitor energy storage and accumulation systems, and also in manufacturing, retrofitting and maintaining basic energy equipment.

“We choose technological partners that undertake the most difficult tasks posed today for the heat treatment of metals. For us, the stability and continuity of the equipment operation for many years is critical. The performance guaranteed by the Seco/Warwick Group met all of our requirements. The delivery of the new vacuum system will allow us to expand the range and volume of manufactured products based on our own production of honeycomb seals, and to master new high-temperature solders,” said Valerii Ivanov, head of components and coatings at Rotec.