Sr
No. |
Process
Operation |
Quality
Characteristics |
Method
of
Control |
Instrument
&
Equipment Used
For Testing |
01. |
Raw
Material
(Strip,
Mother-Hollow) |
a) Dimension
b) Chemical Analysis
c) Control of Slit
Width within
Specified limits
d) Surface |
Actual measurement
as per
Std.
Analysis of all elements as
per Std.
Testing as per various Std,
Actual measurement of width,
thickness & recording,
Visual Inspection. |
Vernier, Micrometer
Volumetric & Gravimetric,
UIN 10-T Testing Machine
Brinnels/Rockwell Tester |
|
|
|
|
|
02. |
Tube Mill |
a) Weld Test, Flare
Flange, Flattering
Reverse bend &
Reverse Flattening
b) Inspection of Weld,
Seam
c) Dimensions
d) Surface |
Testing as per Standard
specification & recording the
results. One test for every
30 to 35 mtrs.
Visual Inspection Weld zone
fusion of O.D.
Thickness & Length.
Check roller surface profile
& finish. |
Universal testing
Machine UIN 10-T Self
Fabricated Tube Mill
Microscope & Visual.
Vernier, Micrometer &
Measure Tape. |
|
|
|
|
|
03. |
Cold
Drawing |
OD
WT
Surface finish on
OD&ID
Length. |
Dimension
Measurement
Visual Inspection |
Micrometer
Measurement Tape |
|
|
|
|
|
04. |
Oxalate
Soap
Coating |
Bath analysis Temperature |
Bath Testing
Scratch Test |
Volumetric Analysis
Thermo-meter |
|
|
|
|
|
05. |
Solution
Annealing |
A) Temperature
b) Hardness
c) Micrometer |
Automatic
Relay
Temp/Controller
Adjusted to present level.
Measurement of Hardness
as per Std one
Test / Lot / Heat |
Digital graphic
Temperature Scanner
Recorder
Digital Temperature
Indicator and control
metallurgical Microscope
Rockwell / Brinell.
Hardness tester. |
|
|
|
|
|
06. |
Straightening |
Straightness
OD
Surface |
Adjust roller setting
measure Visual |
Roller straightening
m/c
Straightness edge/keep
on table
Micrometer
Visual Observation. |
