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  • Users: Rustam1
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  1. Rustam1

    Machining (turning) the products from cermet TiC-(Ni-alloy)

    Hi everybody! Wе have developed the technology of fabrication of complex shapes items from cermet TiC-(Ni-alloy) for use at temperatures up to 1000 C. We must select the incisors for turning. Experiments have shown that the incisors of cubic boron nitride, of diamond composites (content...
  2. Rustam1

    Elastic connection of pipes

    Dear all, I ask you to evaluate the draft of detachable connection of two stainless steel tubes (see file attached). Plug connection is necessary to be able to ensure the movement of the pipe 2 relation the pipe 1 and replace it in the event of leakage. The range of movement of the tube 2 -...
  3. Rustam1

    Operating experience of ball valves with rising stem

    Dear all, The main drawback of the ball valve - the high torque on a rotating shaft(stem). There are ball valves with rising stem, for example, the "Orbit". Designed for use in the abrasive environments at temperatures up to 430 C. Before turning the ball is removed from the seat. In this case...
  4. Rustam1

    Ball valves against gate valves and globe valves in the refinery

    Hello everybody! I have questions. We have produced ball valves with gate hard alloy (cermet) TiC- (Ni-alloy). This is not a coating - valves are completely made of wear resistant cermet. The specific weight (6,5 g / cm3) and the cost of manufacturing the cermet is 2.5 times lower than that...
  5. Rustam1

    Ball valve for thermal power plants

    Dear all! How do I know the use of ball valves in thermal power plants is limited due to: -high torque on the shaft of the ball at the opening due vapor or water high-pressure, because "floating ball"; -high wear a ball or seats at the half-open state, so easily damaged. Maybe I missed...
  6. Rustam1

    Grinding Sperical Surface Seat

    Dear all, We design ball valves made of cermets based on titanium carbide (binder - steel and nickel alloys) for use in oil refining, energy and mining industry. There is a problem in machining the spherical surface of the seat. Drawing the seat DN50mm (sphere diameter of 90 mm) is attached...

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