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Valve

  • A valve regulates, directs or controls the flow of fluids or gases by opening, closing, or partially obstructing various passageways.
  • Valves are widely used components in the oil and gas industry.
  • Sea floor, land, on- and off shore applications.
  • Valves are made in many different sizes and materials. 

 

Facts and component characteristics

  • Forged, cast, and solid billets
  • Materials:
    • Austenitic stainless steel 410, CMC = 06.32
    • Steel 4130 4140
    • Steel with cladded Inconel 625 inlay­
    • Solid Inconel 625 and 718
    • Super duplex and duplex
  • Properties:
    • Many different sizes, cavity bore up to 36 inch
    • Fixturing is a challenge
    • Batch production 1 off up to 300 plus
    • Gate valves and valve seat are typically pre-forged
 

1. ​Cavity bore

Machining challenges

  • Interrupted cut (cross hole)
  • Chip evacuation (turning)
  • Short and irregular tool life
  • Long overhang
  • Unsecure process
  • Close tolerances (finishing)
  • Fixturing

 

Sandvik Coromant solution:

  1. Helical interpolation using high-feed milling concept CoroMill® 419
  2. Semi-boring with CoroBore® 820
  3. Fine boring with CoroBore® 826


Helical interpolation

 

 

Customer values

  • Highly effective process with circular ramping
  • Overcome problems with tool breakage and short tool life
  • Short cycle time
 

2. ​Seat pocket

Machining challenges

  • Interrupted cut
  • Chip control
  • Short and irregular tool life
  • Long overhang
  • Vibrations
  • Unsecure process
  • Fixturing
  • Chip evacuation

 

Sandvik Coromant solution:

Backfacing operation using Silent Tools™ adaptors and CoroTurn SL modular system.

The optimized adaptor allows longer reach and precise and stable machining of the seat pocket feature.

 

 



 

 

Customer values

  • Good surface finish
  • Increased tool life
  • Secure process
 

3. Bolt hole

Machining challenges
  • Productivity
  • Secure process
  • Hole quality
  • Chip evacuation
  • Tool life
  • Fixturing

 

Sandvik Coromant solution:

High-productive drilling with CoroDrill® 880

 

Customer values

  • High productivity
  • Secure process
  • Consistent hole diameter
 
 
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