Final Stage M & C Test Report for Curved Improved Switch Expansion Joint (65mm Max. Gap) for B.G. 60kg UIC on PSC Sleepers for Curves >2º to 4º as per Drawing No. RDSO/T–8926
(CHEMICAL)
|
SL. No. |
Description of Material as per
Specification |
C % |
Mn % |
S % |
P % |
Si % |
B % |
|
1. |
Specified
Value IS 1875 Cl-3/ IRS T-23 |
0.25-0.35 |
0.60-0.90 |
0.040 Max. |
0.040 Max. |
0.15-0.35 |
N.A |
|
Track Bolt RDSO/T-2659,RDSO/T-2660
|
0.322 0.291 |
0.740 0.767 |
0.013 0.026 |
0.021 0.026 |
0.250 0.221 |
-- |
|
|
Specified Value IS 1875 Cl-2A /IRS T-23 |
0.20-0.30 |
0.60-0.90 |
0.040 Max. |
0.040 Max. |
0.15-0.35 |
N.A |
|
|
Track Nut RDSO/T-2659,RDSO/T-2660 |
0.271 0.221 |
0.744 0.765 |
0.024 0.024 |
0.025 0.027 |
0.263 0.233 |
-- |
|
|
2. |
Specified Value IRS
T- 10, IS 2062, Gr. E250 Quality : BR |
0.22 Max. |
1.50 Max. |
0.045 Max. |
0.045 Max. |
0.40Max. |
N.A |
|
MS Plates for M.S. Bracket RDSO/T-6924,
RDSO/T-6925, RDSO/T-6926 Plate Size 20mm Plate Size 25mm |
0.186 0.205 |
0.971 0.905 |
0.017 0.026 |
0.022 0.021 |
0.241 0.253 |
-- |
|
|
3. |
Specified Value IS
1367 Part-3 |
0.20– 0.55 |
N.A |
0.035
Max. |
0.035
Max. |
N.A |
0.003
Max. |
|
H.T.S Bolt 24dia x 90 ( P. Cl. 10.9 ) RDSO/T-8518 (From
Lot) |
0.409 |
-- |
0.0079 |
0.013 |
-- |
0.0015 |
|
|
H.T.S Bolt 24dia x 90 ( P. Cl. 10.9 ) RDSO/T-8518 (From assembled Imp. SEJ) |
0.339 |
-- |
0.021 |
0.023 |
-- |
0.002 |
|
|
Specified Value IS
1367 Part-6 |
0.58 Max. |
0.3 min. |
0.058 Max. |
0.048
Max. |
N.A |
N.A |
|
|
H.T.S Nut (P. Cl. 10) RDSO/T-8518 (From
Lot) |
0.339 |
0.758 |
0.0054 |
0.017 |
-- |
-- |
|
|
H.T.S Nut (P. Cl. 10) RDSO/T-8518 (From assembled Imp. SEJ) |
0.341 |
0.475 |
0.033 |
0.031 |
-- |
-- |
|
|
4.
|
Specified
Value IS 6649 Gr.45 C 8 |
0.40-0.50 |
0.60-0.90 |
0.060 Max |
0.060 Max |
NA |
N.A |
|
Hardened Taper
Washer RDSO/T-8514
& RDSO/T-8515 |
0.477 0.451 |
0.790 0.691 |
0.013 0.033 |
0.036 0.031 |
|
-- |
|
|
5. |
Specified Value IRS
T- 10, IS 2062,Gr. E250 Quality : BR |
0.23 Max |
1.50 Max |
0.045 Max |
0.045 Max |
0.40Max |
N.A |
|
Angle Tie RDSO/T-6927 |
0.187 |
0.847 |
0.016 |
0.019 |
0.238 |
-- |
(PHYSICAL)
|
S. No. |
Description of Material as per
Specification |
Tensile Strength (U.T.S) (Mpa) |
Elongation (%) |
Yield Strength (Mpa) |
Impact
Test (J) |
Bend Test |
Remarks |
|
1. |
Specified Value IRS
T 10, IS 2062,Gr.
E250 Quality : BR |
410 Mpa (min.) |
23% (min.) |
250 Mpa min (< 20mm) 240 Mpa min (20- 40mm) |
27J ( min.) |
2T (No crack) |
|
|
MS Plates for M.S. Bracket RDSO/T-6924, RDSO/T-6925, RDSO/T-6926 Plate Size 20mm Plate Size 25mm |
570 563 |
28.4 24.8 |
393 370 |
28 30 |
OK |
Satisfactory |
|
|
2. |
Specified
Value IRS T 23/IS-1875 , Cl 3 (Bolt), Cl 2A (Nut) |
Tensile Strength (U.T.S) 55 – 68 Kgf/mm2 |
Head Soundness At 300 No Crack |
Unscrewing 2kg. Min. - 12kg Max. |
Drifting 1.5 times of original dia. (No crack) |
Remarks
|
|
|
Track Bolts & Nuts assembly RDSO/T-2659,RDSO/T-2660 |
59 |
NA |
8 |
NA |
Satisfactory |
||
|
Track Bolts RDSO/T-2659,RDSO/T-2660 |
NA |
OK |
NA |
NA |
Satisfactory |
||
|
Track Nuts RDSO/T-2659,RDSO/T-2660 |
NA |
NA |
NA |
OK |
Satisfactory |
||
|
3. |
Specified
Value IS 1367 Part-3 |
Tensile Strength (U.T.S) 1040 Mpa (min.) |
Proof Load 293 Mpa Min. |
Wedge Test 40 |
Hardness 32-39 RC |
Remarks |
|
|
H.T.S Bolt (
P. Cl. 10.9 ) RDSO/T-8518 (From Lot) |
1092 |
OK |
OK |
36 |
Satisfactory |
||
|
H.T.S Bolt (
P. Cl. 10.9 ) RDSO/T-8518 (From
assembled Imp. SEJ) |
1093 |
OK |
OK |
35 |
Satisfactory |
||
|
Specified
Value IS 1367 Part-6 |
Hardness
27-36 HRC |
Remarks
|
|||||
|
H.T.S Nut (
P. Cl. 10) RDSO/T-8518 (From Lot) |
31 |
Satisfactory |
|||||
|
H.T.S Nut (
P. Cl. 10) RDSO/T-8518 (From
assembled Imp. SEJ) |
32 |
Satisfactory |
|||||
|
4. |
Specified
Value IS 6649 Gr.45 C 8 |
Hardness
35- 45 HRC
|
Remarks
|
||||
|
Hardened Taper Washer RDSO/T-8514,
RDSO/T-8515 |
38 |
Satisfactory |
|||||
|
5.
|
Specified
Value IS:210 Gr.FG200 |
Hardness 160 – 220 BHN |
Tensile Strength (U.T.S) 200 MPa min. |
Remarks |
|||
|
C.I .Chair RDSO/T-6923,
RDSO/T-4168 |
178 |
219 |
Satisfactory |
||||
|
6. |
Specified Value IRS
T 10, IS 2062 Gr.
E250 Quality : BR |
Tensile Strength (UTS) 410 Mpa (min.) |
Elongation 23% (min.) |
Yield Strength 250 Mpa min (< 20mm)
|
Bend Test 2T (No crack) |
Remarks |
|
|
Angle Tie RDSO/T-6927 |
484 |
27.6 |
346 |
OK |
Satisfactory |
||
Note:
Test values confirms to specified values of relevant specifications.
NDT
MAGNETIC PARTICAL TESTING (as per IS 3703/ Latest):
i) Material: Thick web switch expansion joint
ii) Method used: Wet
iii) Magnetization technique: Yokes (30 cm.
pole spacing)
iv) Type of Magnetization: Longitudinal
v) Type of Current: HWDC
vi) Application of magnetizing current:
Continuous method
vii) Magnetic Particle used: Non-fluorescent
wet magnetic particles
viii) Inspection Medium: under white light
ix) Checking the adequacy & direction of
magnetization: By Magnetic Field Indicator
|
Sl No. |
Rolling Mark
on Rail |
Heat No. |
Observation |
Remarks |
||
|
Head Top |
Head Side |
Web |
||||
|
1 |
R260 60 EI 0 SAIL VI/2022 |
C 847870 |
OK |
OK |
OK |
ACCEPTED |
|
2 |
R260 60 EI 0 SAIL VI/2022 |
C 848288 |
OK |
OK |
OK |
ACCEPTED |
|
3 |
R260 60 EI 0 SAIL VI/2022 |
C 847870 |
OK |
OK |
OK |
ACCEPTED |
|
4 |
R260 60 EI 0 SAIL VI/2022 |
C 848288 |
OK |
OK |
OK |
ACCEPTED |
Note: MPT has been carried out as
per acceptance limit specified in QAP