This document describes a torpedo ladle car system used to transport molten iron in steel production. It discusses two main types of ladle systems - open top ladles and torpedo ladle cars. Torpedo ladle cars have lower heat loss and allow for more controlled pouring than open top ladles. The document provides details on a 280 tonne capacity torpedo ladle car system in use, including its major components, specifications, maintenance process, and comparison of open top ladles and torpedo ladle cars.

1. Hot Metal Transportation System
Introduction-The ladle car is a special vehicle used
for transporting the molten iron to steel making
plants or foundries. Also it can hold molten iron
when it is not balance between iron making and
steel making.
Mainly two types of transportation system used
1. Open top ladles -An open-topped cylindrical
container made of heavy steel plates and lined
with refractory.

2. Hot Metal Transportation System
2.Torpedo ladle cars-Torpedo ladle cars are used to
transfer molten iron from the iron-making section
of the plant to the steel-making section.
We are using 280 T capacity Torpedo Ladle at our
Angul Plant.Total 14 nos. Torpedo are with us of
which 12 nos. are supplied by Qniye and 2 nos. are
our own JSP Raipur make.

3. Hot Metal Transportation System
Torpedo Ladle Open Top Ladle
1.Low heat loss 1.More Heat Loss
2.Pouring can be done in 2.No control while
a controlled way pouring
3.Refractory removal and 3.Less time required for
relining is time taking. refractory removal and
relining
4.More maintenance. 4.Less maintenance
required required.
5.We can transport hot 5.We can not transport
metal by ladle to long metal by Ladle to long
distance due to low heat distance due to more
loss. heat loss.

4. Hot Metal Transportation System
Major parts of TLC
1) Travelling assembly
2) Tilting assembly
3) Vessel assembly

5. Hot Metal Transportation System
1) Travelling assembly-Traveling assembly is
composed of upper frame, lower frame, two axis
bogie, coupler and buffer, parking brake.

6. Hot Metal Transportation System
Buffer Coupler assy.
Wheel Brake Assy.

7. Hot Metal Transportation System
2) Tilting assembly-The tilting part is composed of
2X7.5kw AC motors, planetary gear reducer ,DC
electromagnetic brake and gear.

8. Hot Metal Transportation System
3) Vessel assembly-The welded vessel consist of one
cylindrical vessel section, two conical transition section
and two cylindrical end section .The filling/pouring
spout have been welded at the center of the vessel to
ensure proper filling and pouring of hot metal.

9. Details of 280t torpedo Ladle car
Type -TLC is multiple axis bogies
Weight of the TLC - 585 t(Car+new lining+hot metal)
- 610 t(Car+worn out lining+hot
metal)
Loaded capability -280t (new lining)
-320t (Worn lining)
Dead Weight -305t (Car 160t+New lining 145 t)
-290t (Car160t+worn out lining130 t)
Diameter - Diameter 3300 mm
Spout size - 2450x1000mm (After brickwork)
Linking speed -Below 3 km/hr
Running speed -Below 15km/hr (Loaded condition)
- Below 20 km/hr (Empty
condition)
Hot Metal Transportation System

10. Details of 280t torpedo Ladle car
Passes curve speed -7-8 km/hr
Length - 26712 mm ( distance of coupler
knuckle
Wheel Type -Forged steel wheel
Wheel Bearing -Tapered roller bearing
Center disc -Planner center disc and arc center
disc
Coupler type -Big angle of swing coupler
Buffer - ST buffer
Tilting assembly - Tilting with motor
Angle of tilting -Normal 120 degree max.360 degree
Speed of tilting -0.2-0.02r/min
Motor wattage - 7.5 kw
Tilting mechanism - Motor+planetory G/B+pin gear
Hot Metal Transportation System

13. Details of Tilting Assembly
Tilting assembly comprises
Motor - 7.5 kw
Coupling - Pin bush coupling
Brake - DCEM brake
Gearbox - Planetary gearbox
- Bearing Housing
Gear - Pin gear (Pinion)
Limit switch - Cam type limit switch
- Coupler
- Rotary lever limit switch
At present we are using Teflon pins as the weakest part &
the coupling is a somewhat self aligned type.
Hot Metal Transportation System

14. PM SHEET OF LADDLE CAR
LADDLE NO - DATE -
S.N. INSPECTION POINTS OK NOT OK REMARKS
1 TIGHTENING OF BRAKE
2 TIGHTENING OF GEARBOX BASE BOLTS
3 TIGHTENING OF MOTOR BASE BOLTS
4 TIGHTENING OF LADLE CENTRE BOLTS
5 CHECK THE BRAKE SHOE CONDITION
6 CHECK GEARBOX OIL LEVEL
7 CHECK VIBRATION OF GEARBOX
8 CHECK ANY ABNORMAL SOUND FROM THE CAR
9 GREASE IN ALL GREASE POINTS
10 TIGHT THE PLUMMBER BLOCK COVER PLATE
11 CHECK THE LADDLE BUFFER CONDITION
12 CHECK THE TEFLON BUSH CONDITION
13 CHECK COUPLING CONDITION
14 CHECK THE GRAPHITE BLOCK CONDITION