VALVE SEATS RECONDITION
· Collecting of valve seats , Cleaning and sandblasting
· Visual inspection
· Checking the seats for any crack with the method of DYE-CHECK
· Checking the cooling area for the circulation of water
· Turning of lathe the seat for the subtraction of any old fired material
· Reconditioning of the diameter of seat and the ridge which the cylinder cover step on
· Turning of lathe the seat for the placing of stellite .(The depth of turning is 3mm)
· Placing of stellite
· Turning of lathe and rectification of the valve seat according the drawing at standard
· Tackling with the elements of our work shop
VALVE SEATS RECONDITION NIMONIC
· Cleaning and sandblasting
· Checking the seat of the valve for any cracks with the dye-check method
· Turning of lathe the seat.
· Pre – heating at 300 – 350 o C
· Continuance of the heating during the hole time of the reconditioning
· Thickness of reconditioning till 10
· Reintroduction: 4-hour in their 650[o] C
· At the end the valve seat is being cooled slowly at the temperature of the environment
· Turning of lathe of the seat according the drawing at standard side
· Packing of the valve seat and marking it
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