FISH PLATES 52 KG / 60 KG FOR ONE METRE LONG, IR Specification T-1 – 2012(PROVISIONAL) & RDSO DRG Nos:T-5915(52Kg)&T-5916 (60Kg)
1. Specification /Drawing : IR Specification T-1
– 2012(PROVISIONAL) & RDSO DRG
Nos:T-5915(52Kg)&T-5916
(60Kg)
2. Date of
Inspection :
3. Place of
Inspection :
4. Size of lot :
5. Size of sample :
1000 nos.
or part thereof rolled from one cast and normalized together shall constitute a
lot. Samples for various test as
under:
S. No. |
Parameter |
Number per |
No. |
Number |
1 |
Visual Examination |
100% from each lot |
|
|
2 |
(a) Correctness of |
100% from each lot |
|
|
|
(b) Dimensions and |
20% of Fish plates |
|
|
3 |
Fitment checks |
3% from each lot |
|
|
4 |
Chemical composition |
2 Nos. from each |
|
|
5 |
Tensile strength, yield strength age Elongation |
2 Nos. from each |
|
|
6 |
Bend Test |
2 Nos. from each |
|
|
6 |
Hardness |
3% from each lots |
|
|
7 |
Macrostructure |
1No. from each lot |
|
|
8 |
Grain size |
1 No. from each lot |
|
(to be checked by the inspector)
6. Document Check:
a)
Valid RDSO approval for manufacture of fish plate.
b)
RITES Inspection certificate for fish plate
bars.
d)
Internal/External test certificate of
chemical composition and mechanical properties as per inspection and test plan
for manufacture of fish plate.
e) Register for the quantity/no of fishplates manufactured
in each shift, with the cast
Numbers, the date manufactured.
f)
PO wise record of
dispatches/accountal of fish plate in line with (d) above.
g)
Internal dimensional check report of fish
plate and manufacture chemical check record.
h) Calibration record of gauges, measuring
instruments & test equipment.
i)
RDSO approval for
templates/gauges.
7. Tests/Checks
(to be witnessed by inspector)
S |
Parameter |
Value Specified |
Observation |
Remarks |
1.
|
Visual |
· Uniform · Sound · Bolt |
|
|
2.
|
Correctness
|
The hole shall be
|
|
Dimensional Nipple Gauges |
3.
|
Dimensional (mm) |
As per dimension |
|
|
4.
|
Nominal Weight |
The nominal weight |
|
|
5.
|
Fitment Check
|
3% of lot/pairs to be checked for fitment by bolting to two |
|
|
S |
Parameter |
Value Specified |
Observation |
Remarks |
6.
|
Chemical Composition Of |
C = 0.40 to 0.50 % + /- 0.03 Si = Mn= 0.60 P = 0.04 % (max) +0.005 S = 0.04 % (max) +0.005 |
|
Sample
|
7.
|
Physical |
(a) (b) (c) |
|
Clause 7 of spec T-1-2012 IS 1608 -1995 Sample |
8.
|
Bend 120
|
Should |
|
The finished fish plates to be bent between the bolt holes without |
9.
|
Hardness |
175 |
|
The test shall be Performed on central portion of outer surface of the fish plate. |
10.
|
Macrostructure |
The |
|
|
11.
|
Grain |
Grain |
|
|
12.
|
Marking |
· Firm’s · These · The heat · All |
|
|