Fabricated Switches 1 in 8.5 / 6400mm for 52 Kg Rails to Drg. No. RDSO/T-4866 with Check Rails & Main Steel Fittings: Physical and Chemical Report
PHYSICAL TEST REPORT
|
Sl. No. |
Item |
Yield Strength |
Tensile Strength |
Elongation Min% |
Hardness |
Charpy ‘V’ Notch (J) |
Bend Test (2t) No Crack |
|||||
|
Specified |
Actual |
Specified |
Actual |
Specified |
Actual |
Specified |
Avg of Three |
Specified |
Avg. of Three |
|||
|
1 |
* Bolts
& Nut IRS/T-23/67 |
-- |
-- |
55-68 Kg/mm2 |
59 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|
2 |
* CI
Block (IS:210 Gr. FG/200) |
-- |
-- |
200 Mpa (Min) |
230.5 217.2 |
-- |
-- |
160-220 BHN |
187 |
-- |
-- |
-- |
|
3 |
**(20mm Thk. Plate) Spherical Washer, Lug & Special Bearing Plate |
240 Mpa (Min) |
344.1 329.3 |
410 Mpa (Min) |
527.2 482.8 |
23% (Min) |
26.8 28.7 |
-- |
-- |
27 J (Min) |
95 |
Satisfactory |
|
4 |
**(16mm Thk Plate) M.S. Bracket & Stops |
250 Mpa (Min) |
348.6 377.6 |
410 Mpa (Min) |
492.3 533.3 |
23% (Min) |
29.0 32.2 |
-- |
-- |
27 J (Min) |
87 |
Satisfactory |
|
5 |
**(14mm Thk Plate) Slide Chair, Insulated Tie Plate (Extended), MS
Plate |
250 Mpa (Min) |
357.0 380.5 |
410 Mpa (Min) |
533.2 512.2 |
23% (Min) |
29.0 27.2 |
-- |
-- |
27 J (Min) |
98 |
Satisfactory |
|
6 |
**(12mm Thk Plate) MS Flat of Insulated Str. Bar, MS Flat Tie Bar
& Steel Shoulder |
250 Mpa (Min) |
329.0 332.4 |
410 Mpa (Min) |
517.4 526.6 |
23% (Min) |
27.1 27.5 |
-- |
-- |
27 J (Min) |
92 |
Satisfactory |
|
7 |
**(6mm Thk Plate) Supporting Plate of Slide Chair & Insulated Tie
Plate |
250 Mpa (Min) |
410.4 450.4 |
410 Mpa (Min) |
635.2 532.8 |
23% (Min) |
28.1 23.1 |
-- |
-- |
-- |
-- |
Satisfactory |
* Sample of Charpy
Impact Test cannot be drawn.
** IS:2062:2011 Grade
E 250 Quality BR
A)
Drifting Test of Nuts:- Nuts
have been subjected to this test as per IRS/T-23/67 Class 12.2.1:-Satisfactory
B) Head
Soundness Test of Bolts:- Bolts have been subjected to this test as
per IRS/T-23/67 Class 12.1.1:- Satisfactory
C)
Screwing & Unscrewing Test of Bolts/Nuts:- The test
have been carried out as per IRS/T-23/67 Class 14.1:-
Satisfactory
Magnetic Particle Test:-
This test been carried out on throughout the bend portion of stock rails
and tongue rails of 1 in 8.5 (Curved) 6400mm for Fan Shaped turnouts BG 52 Kg
rails Drg. No. RDSO/T-4866
CHEMICAL ANALYSIS
|
Sl. No |
Item Description |
Specification |
C% |
Mn% |
Si% |
S% |
P% |
|||||
|
Specified |
Actual |
Specified |
Actual |
Specified |
Actual |
Specified |
Actual |
Specified |
Actual |
|||
|
1. |
(20mm Thk. Plate) Spherical Washer, Lug & Special Bearing Plate |
IS:2062:2011 Grade E 250 Quality BR |
0.22 (Max) |
0.171 |
1.50 (Max) |
1.045 |
0.40 (Max) |
0.125 |
0.045 (Max) |
0.026 |
0.045 (Max) |
0.017 |
|
2. |
(16mm Thk. Plate) M S Brackets & Stops |
IS:2062:2011 Grade E 250 Quality BR |
0.22 (Max) |
0.158 |
1.50 (Max) |
1.049 |
0.40 (Max) |
0.126 |
0.045 (Max) |
0.018 |
0.045 (Max) |
0.016 |
|
3. |
(14mm Thk. Plate) Slide Chair, Insulated tie Plate(Extended)’ M S Plate |
IS:2062:2011 Grade E 250 Quality BR |
0.22 (Max) |
0.186 |
1.50 (Max) |
1.297 |
0.40 (Max) |
0.255 |
0.045 (Max) |
0.012 |
0.045 (Max) |
0.018 |
|
4. |
(12mm Thk. Plate) M.S.Flat of Insulated Str. Bar’ M.S.Flat Tie Bar &
Steel Shoulder |
IS:2062:2011 Grade E 250 Quality BR |
0.22 (Max) |
0.160 |
1.50 (Max) |
1.133 |
0.40 (Max) |
0.107 |
0.045 (Max) |
0.031 |
0.045 (Max) |
0.019 |
|
5. |
(6mm Thk. Plate) Supporting Plate of Slide chair & Insulated Tie Plate |
IS:2062:2011 Grade E 250 Quality BR |
0.22 (Max) |
0.194 |
1.50 (Max) |
1.091 |
0.40 (Max) |
0.201 |
0.045 (Max) |
0.013 |
0.045 (Max) |
0.019 |
|
6. |
Bolts |
IRS/T-23/67 & IS:1875
CI 3 |
0.25-0.35 |
0.340 |
0.60-0.90 |
0.746 |
0.15-0.35 |
0.276 |
0.040 (Max) |
0.033 |
0.040 (Max) |
0.036 |
|
7. |
Nuts |
IRS/T-23/67 & IS:1875
CI 2A |
0.20-0.30 |
0.220 |
0.60-0.90 |
0.646 |
0.15-0.35 |
0.167 |
0.040 (Max) |
0.013 |
0.040 (Max) |
0.014 |
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