Revisioning of HPCV

Amount

Charges for Transportation of valve cone & its spindle from NCTPS-II to Workshop and Vice versa by lifting the cone & bush from TG floor to repair bay, Loading in to the vehicle, Providing wooden packings, wrapping by plastic cover & transportation to the work shop.

Charges for Cleaning of dirt & grime from the valve cone internals to facilitate the removal of internals by using the motor operated brush/scapper/descalling tool in side of the cone up to the satisfactory level of cleaning.

Charges for Releasing of internals such as bushes, liner, segment rings, disc, rings, sealing rings, spacers, locking plate etc., from valve cone by cutting of seal rings, locking plate & segments and releasing the internals with proper sequence, recording the dimensional readings of released components such as outer diameter, inner diameter, thickness, length and fillet angle by using the high precision instruments and comparing with drawing.

Charges for fabricating the special fixtures to facilitate the machining of valve cone and its released internals by cleaning ,cutting, grinding of angles to required size & welding as per requirements

Charges for Machining of valve cone as per the drawing by CNC operated Universal Machining Center Machine (UMC) by lifting and position the valve cone on the machine by using the special fixtures, setting of cutting tool at zero position, making the movement to centering of the cone ,calculation of depth of cut, removal of the metals from valve cone bore area by slow speed operation of machine with required gradual depth of cut until the achieving the required size with micron level accuracy clearance as per the drawing.

Charges for Machining of liner as per the drawing by CNC operated Vertical boring machine by lifting and position the liner on the machine by using the special fixtures, setting of cutting tool at zero position, making the movement to centering of the liner ,calculation of depth of cut, removal of the metals from liner bore area by slow speed operation of machine with required gradual depth of cut until the achieving the required size with micron level accuracy clearance as per the drawing.

Charges for Machining of valve cone internals such as bushes, liner, segment rings, disc, rings, sealing rings, spacers, locking plate etc. as per the drawing by CNC operated lathe machine by lifting and position the liner on the machine by using the special fixtures, setting of cutting tool at zero position, making the movement to centering ,calculation of depth of cut, removal of the metals outer diameter area by slow speed operation of machine with required gradual depth of cut until the achieving the required size with micron level accuracy clearance as per the drawing.

Charges for surface finishing and polishing of valve cone and its internals without changing its dimensional values to facilitate the reassembling by smooth surface by surface / internal grinding machine by loading the items on the bed , centering, calculation and operation of the machine without changing the dimensional values.

Charges for surface finishing and polishing of internal such as bushes, liner, segment rings, disc, rings, sealing rings, spacers, locking plate etc., without changing its dimensional values to facilitate the reassembling by smooth surface by surface / internal grinding machine by loading the items on the bed , centering, calculation and operation of the machine without changing the dimensional values.

Charges for Reassembling of released internals such as bushes, liner, segment rings, disc, rings, sealing rings, spacers, locking plate etc with valve cone & recording the new values at various points by using the high precision instruments and comparing with drawing and matching the Valve cone with valve spindle as per drawing/reference value and ensuring the free movement of valve cone with spindle.

Andavar Engineering Industries (BID ID -1218806)