Bids Are Invited For Work Package-Machining- Work Package-Machining-Others 1. SCOPE OF WORK FOR “CONVENTIONAL MACHINE AND PROCESS ACTIVITIES”: i. TURNING: Different types of Turning operations like Internal turning, external turning, Facing, Taper turning, labyrinth turning, grooving, graphite turning, root turning of blades, Turn grinding etc. of detail parts and assemblies having component size ranging from dia. 15 mm to 950 mm. The Dimensional accuracy varies from 15 microns to 300 microns. To maintain perpendicularity, run out, parallelism within 20 to 50 micron along with other geometrical tolerances and surface finish as per technological requirement. ii. MILLING: Vertical & Horizontal milling of forgings, graphite parts, castings, assemblies & specimen (Ring / Rod) of detail parts, milling of blades, assemblies having component size ranging from 5 mm to 950 mm. To maintain flatness, parallelism, perpendicularity within 10 microns to 150 microns along with other geometrical tolerances and surface finish parameters as per Technological Requirement. iii. BROACHING: Setting of fixture for broaching within 30 microns, horizontal broaching of internal rings, blades maintaining dovetail slot dimension within 15 microns, angle correction within 10 microns and taperness within 4 microns along with other geometrical tolerances and surface finish parameters as per Technological Requirement. The internal rings size ranging from Dia.600mm to 630 mm. Blade length varied from 30mm to 350mm. iv. GRINDING: Different types of Grinding process like Internal grinding, External grinding, surface grinding, blade root grinding, Surface grinding of graphite parts, scallop grinding maintaining dimension within 5 microns. The components ranging from Dia.20 mm to 220 mm. To maintain run out, cylindricity, perpendicularity, ovality, parallelism, flatness and surface finish as per technological requirement. v. DRILLING: Drilling of Angular/ straight/ blind holes, drilling, counter boring, spot facing, reaming and tapping operations on casings, Sub Assembly & assembly size ranging from 20 mm to 950mm .Tolerance of holes to be maintained between 10 microns to 200 microns. Other geometrical tolerances and surface finish as per technological requirement. vi. POLISHING: Polishing of aerofoil surface of Blades by maintaining C1, C2, C max, chord dimensions with gauges ,visual surface finish and material distribution with POMKL device. Polishing of discs, drums on polishing machine. vii. COLD ROLLING: Cold rolling of blades with the set of CAMS in Russian Cold Rolling machine by maintaining C1, C2, C max dimensions as per technology and material distribution with respect to POMKL device as per technology. viii. EDM: EDM of profile slots, profile and angular holes on components and blades with dimensions varying from 0.4 to 2.0mm maintaining geometrical dimension and surface finish as per technology having ranges from 20 mm to 300mm with surface finish as per technological requirement. ix. ASSEMBLY & FITTING: Deburring, Bench work, Polishing of discs, drums & other components, Lapping, Graphite components lapping, Blue check of components, Tapping, Bush assembly, Micro Shotpeening, Coating bench work, Hard alloy and graphite coating, Assembly of components, Assembly & Disassembly of Parts in Fixtures, Leak Test, Hydraulic Testing, Flow check, Pneumatic Test, Rolling Rig Test, AZHO & GAO, Rig activities etc. other than washing, cleaning, marking to be carried out as per technology. 2. SCOPE OF WORK FOR “OTHER ACTIVITIES”: Marking (vibro / electro spark / electro-chemical / laser / Punching), Cleaning (Petrol & water), Ultrasonic washing, Hot and Cold water cleaning. Total Quantity : 175000
