This presentation involves about various types of coaches used in indian railways. It also includes the comparison between ICF and LHB coaches and safety features for customers provided in it. Also, includes the modifications to be provided in those coaches on future.

1. A Mini Project seminar on
STUDY ON COACH INTERIOR
FITTINGS OF ICF AND LHB
COACHES
Presented By
M. RAKESH KUMAR 15B61A0350
Under the Guidance of
Mr. B. RAVI PRAKASH
Assistant Professor
Department of Mechanical Engineering
Nalla Malla Reddy Engineering College

2. CONTENTS
• Role of Carriage Work Shop
• ICF Coaches
• LHB Coaches and its Features
• Limitations & Benefits of ICF over LHB Coaches
• Use of Stainless Steel in LHB coaches
• Doors and Interior Fittings
• Injury free Features
• Conclusion

3. ROLE OF CARRIAGE WORK SHOP
• Carriage workshop is actively engaged in the development of new designs and
upgradation of the existing designs of passenger coaches and its sub-systems. The
main activities of the carriage workshop are:
1. Development of new advanced materials for coach interiors.
2. Development of key drawings and specifications of new designs of coaching
stock.
3. Enhancing fire safety of trains.
4. Validation of design by tests and trials along with production units.
5. The computer wing undertakes high end design activities like finite element
analysis, crash analysis etc.

4. ICF COACHES
• Integral Coach Factory (ICF) coaches are
conventional passenger coaches used on the
majority of main-line trains in India.
• The design concept of the ICF coach stipulates
that the roof, side wall, end wall and the under
frame are joined together by welding, to form
a fully integral coach shell.
• ICF coach shell is made of steel channels is
made up of steel channel frames of thin
sections except the seats and luggage bunks
which are made up of wooden members.
• The weight of coach shell is reduced due to
less use of wooden members. Anti-corrosive
Corten steel (IRSM 41) is used for body
fabrication purpose.

5. LHB COACHES
• LHB(Linke Hofmann Busch) coach
is light weight construction made from
low corrosive stainless steel.
• The weight of the coach is about 10
percent less as compared to the
conventional coach resulting into
lower haulage cost.
• Roof structure, side wall and end wall
are made of ferritic stainless steel.
• The operating speed is 160 kmph and
can be enhanced to 200 kmph.

6. FEATURES OF LHB COACH
• Corrosion free coach.
• Extensive use of stainless steel and surface protection measures.
• Higher carrying capacity.
• Longer by 2.2 meters than conventional coach.
• Light weight coach.
• 10% lesser weight per meter length lesser than conventional coach.
• Higher passenger comfort.
• Better acoustic and vibration measures.
• Super insulation.
• Damping measures.

7. LIMITATIONS & BENEFITS OF ICF OVER
LHB COACHES
LIMITATIONS
• This type of coaches having
limitations in terms of
1. Speed potential.
2. Heavy corrosion.
3. Poor riding comfort.
4. Wearing of parts in the under gear.
BENEFITS
1. Higher carrying capacity.
2. Low corrosion.
3. Low Maintenance.
4. The weight of LHB coach is lesser
as compared to ICF design coaches.
5. Better passenger comfort.

8. USE OF STAINLESS STEEL IN LHB COACH
• Carbon steel.
• Weather resistant Corten steel.
• Ferritic stain less steel.
• Austenitic stain less steel (Cr 18-
30%, Ni 6-20%, Low carbon).

9. DOORS AND INTERIOR FITTINGS
• DOORS
• The various kinds of doors used in
LHB coaches are:
a. Entrance doors
b. Saloon doors
c. End wall doors
d. Pantry doors
e. Lavatory doors
f. Switch board doors
• INTERIOR FITTINGS
a. Sealed window glass unit.
b. Roller blinds.
c. Luggage racks.
LUGGAGE RACKS ROLLER BLINDS SEALED WINDOW

10. INJURY FREE FEATURES
• SAFETY FEATURES
• Mirror frame corners rounded off.
• Seats and berths corners rounded off.
• Fans protective cage flat ribs changed
to round section ribs to avoid head
injury.
• Luggage hooks made out of wire rope.
• Bottle holders changed from steel ones
to nylon ones.
• SUGGESTIONS AND
IMPROVEMENTS
• Basic cleanliness should be maintained
in the coaches.
• Solar Panels should be installed on the
top of the roof.
• Plumbing system should be improved.
• Installation of Fire extinguishers in the
coaches.
• More number of emergency windows
should be provided.

11. CONCLUSION
• ICF coaches have been serving the railways and proved themselves. Due to
advancements in technologies and higher aspirations of travelling public for speed,
safety and comfort, IR has adopted LHB design and now is all set to continue with
this design in all its coach production units.
• Both the coaches have numerous safety features both in terms of exterior as well
as coach interiors.
• The advancement in materials, processes and technologies have been adopted in
LHB design coaches as well as retrofitted in ICF design coaches to the extent
possible.