Whole process of manufacturing TMT bar/ sariya.

1. RAJASTHAN INSTITUTE OF ENGINEERING &
TECHNOLOGY JAIPUR, RAJASTHAN
DEPARTMENT OF
MECHANICAL ENGINEERING

2. A
PRESENTATION ON
INDUSTRIAL TRAINING
AT
Shri Sharma Steeltech (India) Pvt. Ltd.
Jaipur
SUBMITTED BY :-
Dharmendra Dudi
12EREME018
Dept. of Mech. Engg.
SUBMITTED TO:-
Mr. Raghav Singh
Asst. Professor
Dept. of Mech. Engg.

3. CONTENT
Company profile
 Manufacturing process
 Thermo – Mechanical Treatment
 Cutting & Shipping

4. The industry was established in 2008 with the prime
motive of manufacturing TMT steel bars with the
diameter 8mm, 10mm, 12mm, 25mm. The plant produce
approximately 35000 of steel rods on daily bases with the
annual turnover of 300 cr (approx.). This industry is the
sister branch of “Sharma rolling mill private Ltd”. The
industry is setup in the 2 arc of land area where the
machine setup is in 0.5 arc. Most of the area is set free for
material handling purpose. The industry has well
developed machine setup. Most of the machines in the
industry are CNC.
Company’s Profile
Address :- Khasra No.245, Village Bawari Murtikala Zone, Sarna
Dungar, Industrial area, Jhotwara, Jaipur, Rajasthan(India)

6. HEATING ZONE
RAW
MATERIAL
FURNANCE
(1100°-1200°)
CRUSHER
(POWDER)
COAL
To Pre-
rolling
zone

7. PRE- ROLLING ZONE
ROLLER
(VERTICAL)
To
rolling
zone
ROLLER
(HORIZONTAL)
CUTTER
(START END)
From
heating
zone

8. ROLLING ZONE
ROLLER
(25mm)
ROLLER
(10mm)
ROLLER
(12mm)
TMT
(Thermo-
mechanical
treatment)
ROLLER
(8mm)
To cutting and
shipment
Testing

9. Double scissor – 60mm
Scissor – 12mm
On dispatch platform (manually)
Load in trucks (by crane)
Shipping
CUTTING AND SHIPPING

10. RAW MATERIAL
In general two types of raw material are used, namely
Trapezoidal structure
Manufactured by casting.
Length - 52-60 inches.
breadth and height
1. 3 4 X 4 4 inches⅟ ⅟
2. 3 2 X 4 2 inches⅟ ⅟
3. 4 X 5 inches
Low quality TMT bars are
produced.
Ingot Billet
Cuboidal shape.
 Manufactured by casting.
Length – 20 feet
breadth and height
4 X 5 inches
Better quality TMT bars are
produced.
Less chance of blow holes.

11. Furnace
The furnace is now divided as in three sub process:-
1. Feeding
2. Heating
3. Ejection

12. Feeding
Feeding is done with the
help of conveyer rollers.
At a time only 12 pieces of
ingots are feeded.
Worm gear pushing the
ingots into the furnace.
The ingots are placed on the conveyer rollers manually;
tongs are used in the positioning onto the conveyor system.

13. Heating
Consume
crushed coal
as a fuel.
Coal having
CV above
5000 is used.
Temp. Range
1100°-1200°
Burners vary
from 4-8 in
numbers.
It make ingot
feasible for
rolling.
constantly
heated for 4
hours
The furnace interior is made of refractory bricks to withstand the
high temperatures. There are also certain doors at the side for
inspection during maintenance.

14. Ejection
Ejection gate
The gate opens when an ingot is ready to be rolled and the
rollers in the path provided, carry the heated ingot onto the
roughing mill.
Path leads to
rollers

15. Coupling
Rollers pair
Guide way to
guide the ingot
to different
rolling pairs
In this section the hot ingots has to pass through the three different rolling pairs
Roughing Mill

16. Important points in roughing mill:-
The ingot comes out of the furnace it is slowly led to the roughing
mill.
In this section most of the elongation is done as the cross sectional
area decreases with gradually increase in length.
In the first rolling pair ingot passes for 7 times and single pass for rest
of the two.
A motor of power 1200HP is used which runs the bearing coupling
and gear box effectively in the same order.
To accelerate the speed of ingot pinch rolls are used.

17. Cutter
Important Points
It was located between
roughing and intermediate
rolling.
It cuts front and back end of
the red hot rod.
It allows proper entering of
rod in next mill.
Generally blades moves in to
and fro motion.
Cut red hot rod by shearing
action.
Automated part run by gear
arrangement.
The sheared waste pieces are
put aside as scrap.
Sheared
pieces
Cutting
Blade

18. Intermediate Mill
Guide Way to
guide red hot rod
from one roller to
other within
intermediate mill
Control panel :
it control the
entire
intermediate mill
setup.
Pinch Rolls
Shaft
Arrangement

19. Important points in intermediate mill :
After passing through cutter the rod enters in the intermediate
mill.
In this only a small reduction in dimension takes place as most
of the reduction completed in roughing mill.
 Its main function is to prepare the specimen for the finishing
mill.
It is operated by DC motor of 850HP.

20. Important points
Finishing Mill
The rollers are made with
precision and in such a way that
the exact dimension can be
obtained.
 It also facilitates for the brand
imprint to be put onto the rod.
Separate motors are used for
each roller.
 Before entering in this section
two pinch rolls are placed to
improve the speed .
The final dimensions of the
TMT steel bar are achieved by
finishing rollers.

21. Thermo –
Mechanical
Treatment
Here hardening takes place.
Reduce the temperature
abruptly which results in
the hardening of the outer
surface of the rod.
Extend of hardness depends on
the pressure of water.
Pressure ranges from 10 Kg/m –
14.5 Kg/m.
The rods are made to fall on
the cooling bed after the TMT
treatment.

22. Water supplying
pipes at 10 Kg/m
Pressure Gauge
Nozzle
Treated Bar
TMT Quenching Box

23. CUTTING AND SHIPPING
Blind Scissor:-
It cuts the bar in
60m. It is also known
as the double scissor
because is cut the bar
with the help of two
blades as shown.
After passing through the blind scissor the bars were brought
to the dispatch plate form where the bars again cut in the
length of 12m. The bars are future cut or may not depending
upon the demand of customer . Then bundles of bars are
prepared which is future load in the trucks etc. for shipping.

24. Material Handling

25. Thank you
Any Queries ..?