Bids Are Invited For Work Package-Machining-612-631-Cnc, Work Package-Mach-612-631-Conv-Pro, Workpackage-Machining-612-631-Other, Scope Of Work - 612 & 631 Shop 1. Scope Of Work For “Cnc Activities”: I. Cnc Vertical Turning: Range Of Components Approx. Dia Ø300-1500 Mm, Dimensional Tolerance From 05–50 Micron, Geometrical Tolerance Such As Concentricity 10-50 Micron ( Internal And External Diameters ) , Perpendicularity Of Faces W.R.T. Bore From 5-20 Micron, Other Geometrical Tolerances And Surface Finish As Per Technology. Ii. Nc Boring: Range Of Components Approx. Dia Ø 300-1200 Mm, Height 50- 1000 Mm, Dimensional Tolerance From 20–100 Micron, Flatness From 50-100 Micron, Parallelism From 20-100 Micron, Positional Tolerance From 50-100 Micron , Other Geometrical Tolerances And Surface Finish As Per Technology. Iii. Plasma Coating: Plasma Coating Of Sheet Metal Components, Assemblies Etc Using Robot. Range Of Components Approx. Dia Ø30-1400 Mm, Other Geometrical Tolerances And Surface Finish As Per Technology. Iv. Wire Cut Edm: Formation Of Profiles, Id & Od On Sheet Metal Ranging Up To 400 Width X 600Mm. V. Any Other Activity Requiring Programming In 612 & 631 Shop. 2. Scope Of Work For “Conventional Machine And Process Activities”: I. Turning: Turning Of Sheet Metal Components, Forgings, Castings, Teflon, Assemblies, Wire Winding, Induction Rolling / Spinning, De-Burring / Chamfering, Threading, Internal Diameter Grinding Etc. Range Of Components Approx. Dia Ø1.5-1400 Mm, Dimensional Tolerance From 10–100 Micron, Geometrical Tolerance Such As Concentricity 10-50 Micron ( Internal And External Diameters ) , Perpendicularity Of Faces W.R.T. Bore From 5-20 Micron, Other Geometrical Tolerances And Surface Finish As Per Technology. Ii. Milling: Vertical & Horizontal Milling Of Sheet Metal Components, Rod, Forgings, Castings, Teflon, Assemblies & Specimen ( Ring / Rod ) . Range Of Components Approx. 5 - 1200 Mm, Dimensional Tolerance 30 - 200 Micron, Squareness Of Faces Within 50 -100 Micron And Symmetricity Of Slot / Cutouts Within 30-100 Micro, Other Geometrical Tolerances And Surface Finish As Per Technology. , Iii. Drilling: Range Of Components Approx. Dia Ø10- Ø1300, Dimensional Tolerance From 10 -100 Micron, Geometrical Tolerance Such As Interrelation W.R.T Face And Hole To Hole Position From 30 - 100 Micron, Other Geometrical Tolerances And Surface Finish As Per Technology. Iv. Grinding: Grinding Process Will Include Operations Like Surface Grinding. Range Of Grinding 10-300 Mm Length, Dimensional Tolerance From 5 Micron To 20 Micron, Geometrical Tolerance Such As Such Concentricity 5-10 Micron, Perpendicularity Of Faces W.R.T. Bore Within 5-20 Micron, Parallelism Of Ground Faces Within 5 - 20 Micron & Surface Finish As Per Technology. V. Flow Test In Swirlers: Flow Test Of Swirlers Are Carried Out In Rig At A Pressure Ranging Up To 1.5 Kgf / Cm2 To Maintain The Flow Rate Up To 4 Liter Per Sec. Vi. Oil Flushing In Rigs: Oil Flushing Of Assemblies In Rigs Is Carried Out At Approx. 900 C At A Pressure Ranging Upto 5 Kgf / Cm2 Till Class Of Circulated Oil ( 9 – 11 ) Is Achieved. Other Technical Requirements As Per Technology. Vii. Hydraulic Testing: Hydraulic Testing Of Components Are Carried Out In Rigs Ranging From 1-45 Kgf / Cm2 . Other Technical Requirements As Per Technology. Viii. Edm: Electro Discharge Machining Operation Includes Maintaining Of Hole Size Of From Diameter 0.5 Mm To 20 Mm, Up To 30 Mm Oval Cutting, Profile Edm Of Width 10-70 Mm & Length Of 10-150 Mm Within Its Dimensional Tolerance Of 20 Micron, And Perpendicularity Of 10 Micron. Other Geometrical Tolerances And Surface Finish As Per Technology. Ix. Sand Blasting: Blasting Of Components Using Silica & Alumina Grit Size 16 To 120 Mesh At An Approximate Pressure Range Of 0.5- 6 Kgf / Cm2 . Other Geometrical Tolerances And Surface Finish As Per Technology. X. Special Processes: Flame Coating, Map Coating, Detonation Coating, Tip Brazing, Manifold Brazing, Bbt Brazing, Isothermal Forming, Pnuemothermo Forming. All Other Technical Requirements As Per Technology., Xi. Resistance Welding: Spot & Seam Welding Of Sheet Metal Components. All Other Technical Requirements Are As Per Technology. Xii. Press Activity: Involves Cold & Hot Forming, Blanking, Piercing, Punching, Trimming, Profile Rolling, Hydraulic Calibration, Machine Lapping, Honeycomb Manufacturing Etc. Of Sheet Metal Using Hydraulic, Crank & Cantilever Press Ranging From Approx.10-750 Tons. Other Geometrical Tolerances And Surface Finish As Per Technology. Xiii. Riveting: Assembly Of Sheet Metal Components Using Rivets On Riveting Machines. Other Geometrical Tolerances And Surface Finish As Per Technology Xiv. Heat Treatment Of Coating Parts: Pre And Post Heat Treatment Of Components In Furnaces Up To A Temp Of Approx. 4500 C. All Other Technical Requirements Are As Per Technology. Xv. Vacuum Furnace Brazing: Brazing Of Components In Vacuum Furnaces At Vacuum Of 10-4 Mbar Up To An Approx. Temperature Of 850 -13000 C. All Other Technical Conditions As Per The Technology. Xvi. Miscellaneous Work: Operations Not Described Above, Is Considered As Miscellaneous / Other Work Under The Scope Of Work For ”Conventional Machine And Process Activities”. These Activities, E, G: Engraving, Tumbling, Bench Work, Assembly, Assembly Of Components In Fixture & De-Fixturing, Manual Beading For Assembly, De-Burring, Polishing , Lapping, Glueing, Cable / Wire Stretching, Buffing Surfaces Of Od, Id, Flat Surface, Bench Work And Its Assembly Related Operations, Tapping Operations, Load And Torque Test, Lacquering And De-Lacquering, Vibro Cutting, Straight & Circular Shearing, Leak Test, , Powder Filling, Post & Pre Powder / Paste & Part Preparations Etc, Are To Be Carried Out As Per Technology. 3. Scope Of Work For “Other Activities”: Operations Like Marking, Washing ( Ultrasonic, Petrol, Acetone, Water Etc. ) , Cleaning And Packing As Required For Manufacturing And Roh Activities Of 612 And 631 Shop. Total Quantity : 187200
