04- Fabrication Of 33X66 3500 Cd Mill T.R.P.F Top And Bottom Rollers 04- Fabrication Of 33X66 3500 Cd Mill T.R.P.F Top And Bottom Rollers , Dismentalling Of T.R.P.Ftop Roller Weak Old M.S. Fabricated Shell From Old Shaft Of Isgec Make Mill, Size 33”X66” & After Checking Ultra Sonically Testing Of Above Shaft If Foundin Good Conditionthen New Teeth& Shell Should Be Fabricated & To Be Fitted At Old Shaft And Hub As Per Deg. No. Ss 0111-05301501-011-0457 , Existing Measurement Of T.R.P.F Rollers , 1. Swing Dia. 880 Mm , 2. Shell Od 760 Mm , 3. Shell Id 710 Mm , 4. Shell Length 1700 + 0.0 - 0.5 , 5. Teeth Pitch -12 Equal Pitchedpart @ 130 Mm Pitch =1560 Mm , 6. Teeth Profile Shouldbe As Per Deg. , 7.T.R.P.F Top Rollers Shell Material Steelgr. E-250A, Is: 2062-2011 , 8.Shaft –45C8 Is:1570 – 1979 , 9. Hub Material- Cast Steel Gr. 280-520W- Is 1030-1989 , 10. Fabricated & Machine Roller & Teeth Should Be Herd Faced With 6006 L&T Electrode Minimum Hardness 60 Rc Or 550 Bhn , Rates - ( A ) . Without Shaft& Hub , 1.Without Hard Facing Of Shell & Teeth , ( A ) On Conversion Of Old Scrap , ( B ) Without Conversion Of Old Scrap , 2.With Hard Facing Of Shell & Teeth , ( A ) On Conversionof Old Scrap , ( B ) Without Conversion Of Old Scrap , ( B ) With Shaft & Hub , 1.Without Hard Facing Of Shell & Teeth , ( C ) On Conversion Of Old Scrap , ( D ) Without Conversion Of Old Scrap , 2.With Hard Facing Of Shell & Teeth , ( C ) On Conversion Of Old Scrap , ( D ) Without Conversion Of Old Scrap , Dismentalling Of T.R.P.Fbottom Roller Weak Old M.S. Fabricated Shell From Old Shaft Of Isgec Make Mill, Size 33”X66” & After Checking Ultra Sonically Testing Of Above Shaft If Foundin Good Conditionthen New Teeth& Shell Should Be Fabricated & To Be Fitted At Old Shaft And Hub As Per Deg. No. Ss 0111-05301501-011-0457 , Existing Measurement Of T.R.P.F Rollers , 1.Swing Dia. 880 Mm , 2. Shell Od 760 Mm , 3.Shell Id 710 Mm , 4.Shell Length 1700 + 0.0 - 0.5 , 5.Teeth Pitch -13 Equal Pitchedpart @ 130 Mm Pitch =1690 Mm , 6.Teeth Profile Shouldbe As Per Deg. , 7. T.R.P.F Top Rollers Shell Material Steelgr. E-250A, Is: 2062-2011 , 8.Shaft –45C8 Is:1570 – 1979 , 9. Hub Material- Cast Steel Gr. 280-520W- Is 1030-1989 , 10. Fabricated & Machine Roller & Teeth Should Be Herd Faced With 6006 L&T Electrode Minimum Hardness 60 Rc Or 550 Bhn , Rates - ( A ) . Without Shaft& Hub , 1.Without Hard Facing Of Shell & Teeth , ( E ) On Conversion Of Old Scrap , ( F ) Without Conversion Of Old Scrap , 2.With Hard Facing Of Shell & Teeth , ( E ) On Conversionof Old Scrap , ( F ) Without Conversion Of Old Scrap , ( B ) With Shaft & Hub , 1.Without Hard Facing Of Shell & Teeth , ( G ) On Conversion Of Old Scrap , ( H ) Without Conversion Of Old Scrap , 2.With Hard Facing Of Shell & Teeth , ( G ) On Conversion Of Old Scrap , ( H ) Without Conversion Of Old Scrap , Notes , 1. Quantity May Be Increased Or Decreased At The Time Of Placement Of Order. , 2. Test Report Of Material & Electrode Should Be Produced
