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