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A
PROJECT REPORT
AT
BRAITHWAITE & COMPANY L.T.D
( A GOVT. OF INDIA UNDERTAKING)
MINISTRY OF RAILWAY REGISTERED & HEADOFFICE:5 HIDE ROAD,
KOLKATA-700043 WEST BENGAL INDIA
WITH EFFECT FROM 5.6.2013 TO 15.7.2013
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ACKNOWLEDGEMENT
My Industrial Training at Braithwate & co.Ltd Clive Work) Was a very different Leaning
experience of my life. I enjoyed this time duration because I have never exposed myself to such
experience before in short this company helped me bridge the gap between theory and
practice.
I would like to express my sincere gratitude for the personal and professional support provided
by Sr. Manager(Personal & Adm.).Manager works (CW/ VW),Production Executive Engineer.
Without their help the project would never have been complete. I would also like to thank
themfor assigning me project supervisor and constantly keeping in touch with our progress despite
their tight schedule
I would also like to thank all the operator and the manager, staff manager who helped us a lot
and provided the information with patience
Lastly, I would like to thank my parents and all other who motivated me throughout my training
period as without them this report would not have seen the light of the day and all mighty God
who was and is my leading light
Date:
Place: Signature:
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INDEX
TOPIC
1. INTRODUCTION OF BCL
2. COMMERCIAL ASPECT OF BCL AND THEIR BUSINESS PROCEDURE
3. DIFFERENT WAGON IN BCL
4. MANUFACTURE OF BOXN-HL(MBS)
5. DETAIL OF BOXN-HL(MBS)
6. DETAIL OF BRN22.9
7. DETAIL OF MACHINE & TOOLS
8. DETAIL OF WELDING
9. EXPLANATION OF JIGS & FIXTURE
10. CTRB BEARING SYSTEM
11. EOT CRANE
12. FINISHING, PAINTING & LETTERING
13. TESTING & INSPECTION
14. MAINTAINANCE
15. SAFETY & PRECAUTION
16. FACTORY LAYOUT
17. PRODUCT LAYOUT
18. CONCULUSION
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HOW MUCH THIS TRAINING WAS HELPFUL TO ME
The Training at Braithwaite & co. Ltd.(Clive work) was very much helpful to
me.Before the training at this premier plant, I just had the theoretical
knowledge of various equipment, device and machines. After coming here
and getting the supervisory hand and guidance of various senior and junior
engineers, technicians, workers. I get a good knowledge of what the
production & fabrication really stand for the equipment, apparatuses &
machines available here were just beyond the imagination until one can see
it practically, to watch them in practically was the main purpose of having the
training and which was really helpful for me. I gone through the different
processes of production & fabrication field. On, some apparatus I had the
opportunity to work under the guidance and that was really a big advantage
for me while studying. One of the aspect of this training was managerial
aspect. The co-ordination provided by the technical staffs and department of
training was very appreciable. So I thankful to the company to allow me to
train under such guidance
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INTRODUCTION OF BRAITHWAITE & CO.LTD.
The company was established as BRAITHWAITE in 1913 as the Indian subsidiary of
BRAITHWAITE & CO. Engineers Limited (U.K.), for undertaking fabrication of structural
steel works. In 1930 it was incorporated as Braithwaite & co. (India) Ltd at Calcutta. In
1960 Braithwaite’s gnus Works located at Bhadreswar was set up for manufacture of
cranes, foundry products, machinery components etc.
The project division at Calcutta was established in 1978 to execute turnkey project for
material handling pants. In 1987 Victoria work was
taken over, which is equipped with all facilities for manufacture of Heavy structural’s for
Bridges and other engineering application. In 1976
company was taken over by Government of India, as fully owned public sector company.
Braithwaite & company ltd (BCL Company) is a public sector company under the
administrative jurisdiction of the Department of Heavy Industry, Ministry of Heavy
industry and public enterprise, Government of India.
The company (BCL) was incorporated in west Bengal as Braithwaite &
Co. ltd on 28 th February, 1930. The management of the company was taken by
India on 6 th March,1971. And the company was subsequently nationalised w.e.f.
on 1 st December 1976. BCL
became wholly owned by subsidiary of holding company “BH RTI BH RI UDYOG
LTD.(BBUNL)” , upon its formation in September, 1986. BCL is one of the largest manufacturers of wagon in India with an installed capacity
of 4350FWUS. It has composite
infrastructure for manufacturing. BCL deliver Wagon work, Structural work, Steel
Foundry work, etc. Previously they were accompanied with Tanks special Wagon,
Cranes, Jute curding M/C , and others.
It is the first manufacturing company to poses ISO 9002 certification for their
management system & marketing management. There Crane manufacturing unit
received ISO 9001 and their Foundry product (Angus) poses 9002 certification. Now
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this industry is under ministry of
railway.
*It is one of the largest manufacture having all necessary infrastructure in the company.
*Export wagon to many country of the world.
*The company possess 9000 certificates for their of product.
*It offers a wide range of Engineering product and services.
*There is adequate supply of Electric power.
*Large number of experienced and skilled man power working.
*Economical location near Kolkata Port, Rail route , etc.
* “Enterprise Resources Planning” (ERP) package is implemented to increases the costeffective economics.
*It has capacity to develop necessary products within a short learning time such as
Bogie, Coupler, Dished end, LPG Bullets etc. LPG Bullets
which were installed under the supervision PDIL sindri and IOCL Digboi by Braithwaite
and company ltd.
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PLANNING
After getting the ord er the organization informs it s drawing office for deleted design
and drawing. Then calculation of raw material involvement is done. Costing of raw
material is being informed to accounts department. Advice purchase to procure
material accordingly. To calculate man-hour involvement & machine involvement
behind the job. To select suitable area in the workshop where the job will be done. In
this case tonnage of job handle, capacity of EOT (Electrical overhead traction)
Crain(S) available. Bay width & length suitable route of incoming & outgoing
material, loading & despatch of material etc. are consider. To fix product target
schedule. Time of inspection & dispatch.
Details Of The Product :
Clive Works :-
1 .Bogie Covered Non Transitional coupling type High Speed railway wagon, with Air brake orBCNA-HS
2 .Bogie Alumina Tank Wagon, High Pressure railway wagon(for BALCO), BATW-HP or
BTAP-HP
3 .Bogie Open Special Type with Non Transitional coupling Light Weight railway wagon orBOXN-HL
4 .Bogie Open Special Non Transitional coupling type High Speed railway wagon or BOXN-HS
5 .Bogie Rail Non Transitional coupling type High Speed railway wagon with Air
brake or BRN22.9 Victoria works :-
6 .Bogie Tank Petrol Non Transitional coupling type railway wagon, BTPN (oil
tank), BTFLN (oil tank) Angus Work :- Bogie, Coupler, Striker Casting & other
Foundry products
The facilities provided are capable of producing high quality casting of approximately 3000 MT.
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COMERCIAL ASPECT OF BCL & THEIR BUSINESS PROCEDURE
The marketing procedure in BCL follow the steps below:
1. Contract & Order
2. Planning
3.Design & Drawing
4. Purchase
MARKETING & COMMERCIAL
Main Objective:
1) To receive the order after opening of tender , Techno-commercial evaluation of the
tender is done for assignment of price according to terms and condition.2) After the manufacturing of wagons, Dispatch memo (DM) and inspection
certificate (IC) is prepared and the final bill is prepared for receiving the residual
amount of money
STEPS FOR IMPLEMENTATION & EXECUTION OF A RAILWAY BOARD WAGON
CONTRAC:
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DIFFERENT WAGON IN BCL
1. BOXN-HL
BOGIE OPEN SPECIAL NON TRANSTIONAL COUPLING TYPE HIGH SPEED
RAILWAY WAGON (BOXN-HL) IS A HIGH CAPACITY WAGON. ITS
CARRYING CAPACITY IS 70.30T AND ITS TARE WEIGHT IS 21.3T AND AREA
OF BOXN-HL IS 30.32M. IT IS HIGH SPEED AND HIGH LOAD WAGON. IT HAS
TWO SIDE BODY AND TWO END BODY ATTACHED TO ITS AT SIDE AND
END BODY OF WAGON. IN THESE CTRB IS USE IT STAND FOR CARTRIDGE
TAPERED ROLLER BEARING. IH HAS A HIGH CAPICITY DRAFT GEAR WITH
FOLLOWER AND ALSO HAVING FOUR FLAP DOOR BOXN-HL
WAGON FITTED WITH CASNUB HS HIGH SPEED BOGIES RAISING THE
MAX. SPEED TO 100KM/H
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2.BRN22.9
BOGIE RAIL NON TRANSITIONAL COUPLING TYPE HIGH SPEEDRAILWAY WAGON BRN22.9 Is a high speed wagon. Its carrying capacity is
68.90T and tare weight is 22.90T. It has
two end body and ten stanchion channel are fixed in both side of the wagon. Air braked wagon with CASNUB bogies for rail and steel product.as shown in FIG(1)
FIG(1) FIG(2)
3.BCNA-HSBOGIE COVERED NON TRANSITIONAL COUPLING TYPE HIGHSPEED RAILWAY WAGON BCNA-HS wagon are modified design of BCNAwagon with CASNUB HS High speed bogie rising the max. Speed upto100km/h. These wagon are characterised by a patch of red white horizontalstripes on the top left. as shown in FIG(2)
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IDEAL UNDERFRAME FOR WAGON
The whole process of fabrication of a wagon mean fabrication of different
parts,
assemble them together also with important parts, finishing, painting, and
lettering. BCNA wagon is made of one under frame, which is the spinal cord. Ofthe whole, two side Bodies, and covering of the whole i.e. the roof, and bogies and
wheels. Different parts of the wagon are fabricated in different places and after that
they are assembled together in assembly shop. Some of the component like bogies,
wheels, axle, etc. are bought from outside. The assemblies are also an assembled
from other sub-assemblies. The main components of wagon are:
1. Under frame (1 no.)2. Side body (2 no.)
3. End Body (2 no.)
4. Bolster (4 no.)
5. Cross bar (8 no.)
6. Sole bar (2 no.)
UNDER FRAME ASSEMBLY AND ITS SUB - ASSEMBLIES
It is the main frame or main structural and functional element of wagon. It
consists of several subs - assemblies. The process will follow:
1). Sub - assemblies (canter sill, sole bar, bolster, cross bar, stiffener box ,etc.) are
manufactured. (Discussed later)
2). Assembled together on fixture, welded by upside down on bottom side. 3). Trunion Welded.
4). Floor plates are tack welded at bottom side, then stitch welded (thinner
(3mm) plates may distort or there may be a problem of undercut or
penetration during continuous welding) at bottom.
5). Brake system assembled.
6). Striker casting, back stop, couple, centre pivot on the retainer ring etc. arewelded or riveted where necessary.
7). After completion of the under frame fabrication it is send for boxing.
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UNDER FRAME COMPONENTS:
Center sill, sole bar and bolster are the main load carrying components of an under frame.
Cross bar, carrier brackets, string channels and headstock are load distributing components that
provides rigidity to the structure. The two gusset plate provides rigidity to the joints ( betweencross bar-centre sill & bolster) & prevents bending at the joints. Coupler acts as the linkage
between the two wagons,& receives tensile stress, compressive stress & testing. These
stresses are transported to the draft gear (consists of a rubber compressed at high pressure) by
yoke that absorbs the stress & twisting. Yoke connect coupler path.
Retaining ring acts as a support to the centre pivot pin that connect the body of the wagon
with the bogies attached to the wheels. Auxiliary reservoir supporting bracket acts as a
support to the auxiliary air cylinder that provides air during its insufficient supply for proper
functioning of brake system.
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COUPLER & ITS COMPONENET
It is a part os wagon in one wagon two coupler is used. A coupler is a mechanisim for
connecting rolling stork in the train. The design of the coupler is standard and it play a vitalrole it is basically use to join and pulling another wagon.
Component of Coupler
1. Striker casting
2. Draft gear
3. Follower
4. York 5. York pin
6. York supporting plate
7. Knuckle
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DETAIL OF BOXN-HL WAGON
UNDERFRAME:
It is a part of wagon. In boxn-hl it is used. It play a vital role in wagon and it may also called back bone of the wagon. It carry the entire load of the wagon. To making the under frame
there are various part are attached such as, center sill, sole bar, head stock, bolster, cross bar,
stringer channel, gussets, coupler, brake assembly etc.as shown in fig(5)
SIDE BODY:
It is a part of boxn-hl. In boxn-hl two side body is use. It locate in side part of the wagon.In side body stanchion channel and door are fitted.as shown in fig (6)
END BODY:
It is a part of boxn-hl. In boxn-hl two end body is used. It locate in end part of the wagon.
In end body stanchion channel are fitted.as shown in fig(7)
fig(5) fig(6) fig(7)
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BOGIE WITH WHEEL:
It is a part of wagon. In BOXN-HL CTRB Bearing are use (cartridge Taper Roller
Bearing) are mounted on wheels and onto bearing adapters are placed. Now one Bogie
(casnub 22 nlb) is placed on two sets of wheel and axle ( one set consists of two wheels
and their connecting axel weighs about 1480 kg). Before mounting the bogie, theelectrometric pads should be placed at the proper places. After bogie wheeling is done the
boxed wagon is placed on it. As shown in fig(8)
fig.(8) fig.(9) fig(10)
BOLSTER:
It is a part of BOXN-HL. In boxn-hl four bolster is used. It locate in between of center sill
and sole bar. In Bolster four plate is
use one is in top, and bottom and two is in middle. To making the under frame various
part are attached with bolster are center sill, sole bar and sanction channel. as shown in
fig(9).
CENTER SILL
It is a part of boxn-hl. In boxn-hl one center sill is used. It locate in the center of the under
frame. In center sell stiffer box and rib are fatted. To making the under frame there are
various part are attached to center sill and they are cross bar, sole bar, bolster, head stock
and stanchion channel. as shown in fig(10).
SOLE BAR:
It is a part of BOXN-HL. In boxn-hl two sole bar is used. It locate in side portion of
under frame where the side body get fitted. To making the under frame: head stock,
stanchion channel, bolster, cross bar, is attached to sole bar. as shown in fig(11).
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CROSS BAR:
It is a part of BOXN-HL. In boxn-hl eight cross bar is use. It lacate in between to center sill
and sole bar. In cross bar three
plate are fitted one is in top and bottom, and middle. To making the under frame various
part are attached with cross bar are stanchion channel, sole bar and center sill. as shown infig(12).
HEAD STOCK:
It is a part of BOXN-HL. In boxn-hl four head stock is use. It locate at the end of boxn-hl.
To making the under frame head stock is attached with sole bar, center sill, and stanchion
channel. as shown in fig(13).
fig(11) fig(12)
STRINGER CHANNEL:
It is a part of BOXN-HL. In boxn-hl stringer channel fitted across the head stock &
bolster &cross bar or between the two cross bar is known as stringer channel. In boxn-hl
sixteen channel is used
CARRIED BRACKETS:
It is a part of BOXN-HL. In boxn-hl carried bracket are use it is similar to cross bar it also
consist of supporting plate which provides support to the brake pipes.
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FLAP DOOR:
The flap
door ishinged at
the
underframe.
The door is
fitted to the
side body by
hinge
which is
riverted to it
by a
rimming
machine.
There are four flap doors in the wagon.
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DETAIL OF BRN22.9 WAGON
UNDERFRAME: It is a part of wagon. In BRN22.9 it is used. It play a vital role in wagon
and it may also called back bone of the wagon. It carry the entire load of the wagon. To
making the underframe there are various part are attached such
as,center sill, sole bar, head stock, bolester, center gidder web, inner cross bar, cross bar
web, stringer channel, gussets plate, coupler, brake assembly etc.as sown in fig(a)
fig.(a fig.(b)
SIDE BODY:
It is a part of BRN22.9. In brn22.9 ten stanchion post are fitted in stanchion bracket which isattached with side rail.as shown in fig(b)
END BODY:
It is a part of boxn-hl. In boxn-hl two end body is used. It locate in end part of the wagon. In
end body stanchion channel are fitted.as shown in fig.(c)
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BOLSTER:
It is a part of BRN22.9. In brn22.9 two bolster is used. It locate in between of center sill and
center girder web. In Bolster four plate is use one is in top, and bottom and two is in middle.
To making the under frame various part are attached with bolster are center sill, sole bar,
sanction channel, and center girder web.
CENTER SILL:
It is a part of BRN22.9. In brn22.9 two center sill is used. It locate in the both end of the
under frame. To making the under frame there are various part are attached to center sill
and they are , bolster, head stock, and stanchion channel. as shown in fig(c).
SOLE BAR:
It is a part of BRN22.9. In brn22.9 two sole bar is used. It locate in side portion of under
frame where the side rail get fitted. To making the under frame: head stock, stanchion
channel, cross bar web, is attached to sole bar. as shown in fig(d).
fig.(c) fig.(d)
CROSS BAR WEB:
It is a part of BRN22.9. In brn22.9 eight cross bar is use. It locate in between , sole bar and
center girder web. In cross bar web three plate are fitted one is in top and bottom, and
middle. To making the under frame various part are attached with cross bar web are
stanchion channel, sole bar, and center girder web. as shown in fig(e).
fig.(e)
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HEAD STOCK:
It is a part of BRN22.9. In brn22.9 four head stock is use. It locate at the end of brn22.9.
To making the under frame head stock is attached with sole bar, center sill, and
stanchion channel. as shown in fig(f).
SIDE RAIL:
It is a part of BRN22.9. In brn22.9 two side rail is use. It locate at side part of the wagon. In
side rail ten stanchion post are fitted. as shown in fig.(g)
fig.(f) fig.(g) fig.(h)
CENTER GIRDER WEB: It is a part of BRN22.9. In brn22.9 two center girder web is use.
It locate at the center of under frame. To making the under frame center girder web is
attached with sole bar, bolster, cross bar web, inner cross bar and stanchion
channel. As shown in fig.(h)
fig.(j)
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TYPES OF WELDING:
Manual Metal arc welding(MMAW): One of the most common types of arc welding is
shielded metal arc welding (MMAW);it is also known as manual metal arc welding (MMA)
or stick welding. Electric current is used to strike an arc between the base material and
consumable electrode rod, which is made of filler material (typically steel) and is coveredwith a flux that protects the weld area from oxidation and contamination by producing carbon
dioxide (CO2) gas during the welding process. The electrode core itself acts as filler material,
making separate filler unnecessary. Shielded metal arc welding. The process is versatile and
can be performed with relatively inexpensive equipment, making it well suited to shop jobs
and field work. An operator can become reasonably proficient with a modest amount of
training and can achieve mastery with experience. Weld times are rather slow, since the
consumable electrodes must be frequently replaced and because slag, the residue from the
flux, must be chipped away after welding. Furthermore, the process is generally limited to
welding ferrous materials, though special electrodes have made possible the welding of cast
iron, nickel, aluminum, copper, and other metals. as shown in fig.(a)
fig.(a) fig.(b) fig.(c)
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MIG WELDING: MIG welding was developed in the 1940 s and 60 years later the general
principal is still very much the same. MIG welding uses an arc of electricity to create a short
circuit between a continuously fed anode and a cathode. The heat produced by the shortcircuit, along with a non-reactive gas locally melts the metal and allows them to mix
together. Once the heat is removed, the metal beings to cool and solidify, and forms a new
piece of fuses metal. MIG welding is useful because you can use it to weld
many different types of metals: carbon steel, stainless steel, aluminum, magnesium, copper,
nickel, silicon, bronze and other alloys. As shown in fig.(b)
SUBMERGED ARC WELDING: SAW is a commend arc welding process. Originally
developed by the linde-union carbide company. It requires a non-continuously fed
consumable solid or tubular electrode. The molten weld and the arc zone are protected from
atmospheric contamination by being “submerged” unde r a blanket of granular fusible flux
consisting of lime, silica, manganese oxide, calcium fluoride, and other compounds. Whenmolten, the flux because conductive, and provides a current path between the
electrode and the work. This thick layer of flux completely covers the molten metal thus
preventing spatter and sparks as well as suppressing the intense ultraviolet radiation and
fumes that are a part of the shielded metal arc welding(SMAW) process. As shown
in fig.(c)
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MACHINE & TOOLS
A machine is a tool that consists of one or more parts, and uses energy to achieve a particular
goal. Machines are usually powered by mechanical, chemical, thermal, or electrical means,
and are frequently motorized. Historically, a powered tool also required moving parts toclassify as a machine; however, the advent of electronics technology has led to the
development of powered tools without moving parts that are considered machines. A simple
machine is a device that simply transforms the direction or magnitude of a force, but a large
number of more complex machines exist. Examples include shearing machine, rolling
machine, drilling machine, cutting machine, bending machine, etc.
A machine tool is a machine for shaping or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing or other forms of deformation. Machine tools employ
some sort of tool that does the cutting or shaping. All machine tools have some means of
constraining the work piece and provide a guided movement of the parts of the machine.
Thus the relative movement between the work piece and the cutting tool (which is called the
tool path) is controlled or constrained by the machine to at least some extent, rather than
being entirely "offhand" or "freehand".
TYPES OF MACHINE
Hydraulic Guillotine Shearing Machines:
This fully Hydraulic Guillotine Shearing Machines is very versatile, reliable and efficient,
designed and built to high standard to meet the requirement of precision sheet and plate
working applications. Fast and accurate motorized back gauge with front digital readout is a
standard with all models of this machine. The back gauge travels on precision lead screw.as
shown in fig.(b)
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Fig.(b) fig.(c)
Gas cutting machine :
Gas Cutting Machine helps a Fabricator in cutting production costs and increases efficiency.
It is designed for heavy duty jobs and also for precision jobs. It works on single phase supply
and is operated by 1/12 H.P. single phase motor. Machine is designed to operate on magnetic
effect in the roller shaft of gear box. Movement of gas cutting nozzle is directly linked with
magnetic roller shaft which results in fine cutting of metal.
WELDING & CUTTING MACHINE:
which are available in different dimensions and specifications. Used in applications like
automatic or manual cutting & flame cutting of small vehicles, our range is portable and
have cutting capacity of range 1200 mm. Further, our products find application in steel plate
making in industries such as car, ship building, engineering machinery, petroleum and
chemical industry etc.as shown in fig.(c)
PLASMA CUTTING MACHINE:
Plasma cutting is a process that is used to cut steel and other metal of different thickness(or
sometime other material) using a plasma torch. In this process, an inert gas (in some units,
compressed air) is blow at high speed out of a nozzle; at the same time an electrical arc is
formed through that gas from the nozzle to the surface being cut, turning some of that gas to
plasma. The plasma is sufficiently hot to metal being cut and moves sufficiently fast to blow
molten metal away from the cut as shown in fig.(d)
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ROLLING MACHINE :
It is used to roll or bend a plate by help of three rollers one on top and two below the plate.
The plate is straightened and depends upon the vertical distance between axis of top roller
and bottom two rollers and the bending upon top roller vertical movement. More the vertical
movement more will be the bending effect. as shown in fig.(e)
Fig.(d) fig.(e )
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BENDING & PRESSING :
Bending is a manufacturing process that produces a V-shape, U-shape, or channel shape
along a straight axis in ductile materials, most commonly sheet metal. Commonly used
equipment include box and pan brakes, brake presses, and other specialized machine
presses. Typical products that are made like this are boxes such as electrical enclosuresand rectangular
STRAIGHTNER MACHINE:
This machine is use to straighten the metal plate which bend due to various defect. Here the
floor plate are straighten before placing it on the floor of the wagon.
Pneumatic Compressor Machine:
It is a type of machines which creates air pressure and is used in various machine for various
process. Altogether there eight pressure pump in the Braithwaite which supply pneumatic
pressure for various equipment for running. as shown in fig.(f)
fig.(f)
SHOT BLASTING MACHINE:
It is a type of machine which is requires giving finish touch to the product that is wagon. It
is designed in such manner that all the part and body are shaped properly.
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RIVETTING MACHINE:
Riveting machines are used to automatically set (squeeze) rivets in order to join materials
together. The riveting machine offers greater consistency, productivity, and lower cost when
compared to manual riveting. It is a heavy machine which contain a piston inside which
presses the die to give the required shape to the metal piece which is heated near it melting point .so that it is easier to give a desire shape.
GRINDING MACHINE:
A grinding machine, often shortened to grinder, is a machine tool used for grinding, which
is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on
the wheel's surface cuts a small chip from the work piece via shear deformation.
CNC MACHINE
CNC Machine is a process used in the manufacturing sector that involves the use of
computer to control machine tools. Tools that can be controlled in this manner include lathes,
mills, routers and grinders. The CNC in cnc machine stands for Computer Numerical
Control. On the surface, it may look like a normal PC controls the machines, but the
computer s unique software and control console are what really sets the system apart for use
in CNC machine. Under CNC Machining, machine tools function through numerical control.
A computer program is customized for an object and the machine are programmed with CNC
machining language that essentially controls all features like feed rate, coordination, location
and speeds. With CNC machine, the computer can control exact position ng and velocity.
CNC machining is used in manufacturing both metal and plastic parts.
There are many advantages to using CNC Machining. The process is more precise than
manual machining, and can be repeated in exactly the same manner over and over again.
Because of the precision possible with cnc machining, this process can produce complex
shapes that would be almost impossible to achieve with manual machining. CNC
Machining is used in the production of many complex three-dimensional shapes. It is
because of these qualities that CNC Machine is used in jobs that need a high level of
precision or very repetitive tasks.
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COMPRESSOR MACHINE
Hydraulic Compressor Machine:A hydraulic compressor machine is used to run various machine for compressing the job
or for creating sheers on the blade to cut the material Its silent features are
1.More Economical & Easy To operate high Performance
2.Durability
3.Sale Service Support
4.Require Low Maintenance5.Cost Effective
6.Faster Than Single Pump
7.Long Life of High Pressure Pump
8.Continuous Process(Less labour Required)
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LOCK BOLTING MACHINE:
This was an inspiration for later gas operated, semi-automatic or selective fire firearms (such
as the M1, M14, M16, the L85A1/A2 and the AK-47/74) in which the bolt, upon contact with
the breech, rotates and locks into place, being held in place by lugs attached to the breech or
barrel extension. Upon closing, the bolt passes through the slots cut in the front of the barrel
extension, and then rotates; at this point it is
locked in place. The bolt remains locked until the action is cycled, either manually by the
operator, or mechanically by the gas created by discharging the rifle pushing on the operating
rod or bolt carrier, which then rotates the bolt and unlocks it from the breech so that it can be
withdrawn in order to extract and eject the spent casing, and chamber a new round.
RIMMERING MACHINE:
It is a type of machine used to make the size of the drilling much accurate and slag free so
that lock bolting or riveting can be easily done without any problem.
CUTTING AND CHIPPING MACHINE:
In Braithwaite various mechanical , hydraulic and pneumatic shear machine are presentwhich basically run manually and use to cut and make small chip for further production of
the components by giving shear.
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DRILLING MACHINE:
A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a
drill bit or driver bit, used for drilling holes in various materials or fastening various
materials together with the use of fasteners. The attachment is gripped by a chuck at one endof the drill and rotated while pressed against the target material. The tip, and sometimes
edges, of the cutting tool does the work of cutting into the target material. This may be
slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling),
crushing and removing pieces of the work piece (SDS masonry drill), countersinking,
counter boring, or other operations.
ig.(g) fig.(h)
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JIGS &FIXTURE
In metalworking and woodworking, a jig is a type of custom-made tool used to control the
location and/or motion of another tool. A jig's primary purpose is to provide repeatability,
accuracy, and interchange ability in the manufacturing of products.[1] A jig is often confused
with a fixture; a fixture holds the work in a fixed location. A device that does both functions
(holding the work and guiding a tool) is called a jig. as shown in fig(h)
DRILL JIGS
A drill jig is a type of jig that expedites repetitive hole centre location on multiple
interchangeable parts by acting as a template to guide the twist drill or other boring device
into the precise location of each intended hole centre. In metalworking practice, typically a
hardened drill bushing lines each hole on the jig plate to keep the tool from damaging the jig.
Drill jigs started falling into disuse with the invention of the jig borer.
TYPES OF DRILL JIGS
1.Plate jigs or channel jig.
2.Angle plate jig.
3.Box jig.
4.leaf or latch jig.
5.Sandwich jig.
6.Trunnion jig.
7.Jig for multi spindle machines.
8. Template jig
9 Universal Jig
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FIXTURE
A fixture is a work-holding or support device used in the manufacturing industry.[1][2]
Fixtures are used to securely locate (position in a specific location or orientation) and
support the work, ensuring that all parts produced using the fixture will maintain conformity
and inter changeability. Using a fixture improves the economy of production by allowing
smooth operation and quick transition from part to part, reducing the requirement for skilled
labour by simplifying how work pieces are mounted, and increasing conformity across a
production run.
CTRB BEARING:
A bearing is a machine element that constrains relative motion between moving parts to
only the desired motion. The design of the bearing may, for example, provide for free linear
movement of the moving part or for free rotation around a fixed axis; or, it may prevent a
motion by controlling the vectors of normal forces that bear on the moving parts. Bearings
are classified broadly according to the type of operation, the motions allowed, or to the
directions of the loads (forces) applied to the parts. CTRB is a special type of bearing used in
bogie wheel of wagon. It is a very costly bearing imported from America by themanufacturer name Benco. Altogether for a boxn-hl 16 bearing is mounted on the two side
of the wheel.
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FINISHING, PAINTING AND LETTERING
Finishing & Painting: After manufacturing of BOXN-HL wagon complete testing &
inspection is done. If there is no objection, then it is go for finishing. The metallic surface may
have been damaged by several fabrication processes and rust. So one or more subsequent
polishing may be needed to get better surface. Shot blasting gives the necessary surface finish
to provide good adhesive property to paints. Within 30 to 60 minutes after shot blasting
painting is done. Painting gives the surface, corrosion resistant against all natural hazards.
There are three coats to protect the surfaces of the bodies (end-bodies, side-bodies &
under-frame) as these are manufactured with the thin steel sheet. Following paints are used for
brazing at finishing shop.
Lettering: This is the process of providing information about the wagon. The outer surface of
the wagon is inscribed with the letters which gives the relevant information such as no. of the
wag on, name of railways, its tare weight, carrying capacity, and other railway related
information regarding the wagon.
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TESTING & INSPECTION
After manufacturing of BOXN-HL and BRN22.9 wagon, before dispatch an inspection
work is done by the company. A wagon is tested to check Brake Test: A brake is
mechanized device which offers an artificial Frictional resistance onto a moving body, in
order to slowdown (retard) or, stop it completely. The brake used in railway wagon is
mainly air brake. So the testing done by „ irbrake Testing Rig . During the testing, hose
pipe transfers the air from the Airbrake Testing Rig to the dirt collector where air became
clean (as dirt causes chocking of valves, piping & other internal equipments) and go to
control chamber; it allows air to go to distribution valve and distribute the air to brake
cylinder (generally 5 kg/cm 2) and the excess air to auxiliary reservoir. Auxiliary reservoir
will supply air to break cylinder if the air pressure falls below 5 kg/cm 2, within the
distributor valve. During testing, brake cylinder is connected to a pressure gauge which
records the pressure inside the cylinder and also the movement of the piston during
locking & unlocking of the brake- shoe with the wheel.
QUALITY ASSURANCE: After manufacturing of BOXN-HL,BRN22.9 & before despatch
an inspection is done by the RDSO inspection, Ministry of Railway Board. The inspection
form contains: Running gear, bogie made & bogie no., air brake made, SAB (Slack adjustment
barrel) made, date of air brake testing units calibration, data of air brake testing, coupler made,
tare weight, date of water tightness testing,RAD availed, date of short blasting, DM issusing
date, IXR fit memo issue date. The last official formality of quality assurance is, the above
inspection from should be signed by works inspectors & RDSO inspection jointly.
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MAINTAINANCE
Maintenance, repair, and operations (MRO) or maintenance, repair, and overhaul[2] involves
fixing any sort of mechanical, plumbing or electrical device should it become
out of order or broken (known as repair, unscheduled or casualty maintenance). It also
includes performing routine actions which keep the device in working order (known as
scheduled maintenance) or prevent trouble from arising (preventive maintenance).
MRO may be defined as, "All actions which have the objective of retaining or restoring
an item in or to a state in which it can perform its required function. The actions include the
combination of all technical and corresponding administrative, managerial, and supervision
actions." MRO operations can be categorised by whether the product remains the property of
the customer, i.e. a service is being offered, or whether the product is bought by thereprocessing organisation and sold to any customer wishing to make the purchase. (Gazette,
2002) The former of these represents a closed loop supply chain and usually has the scope of
maintenance, repair or overhaul of the product. The latter of the categorisations is an open loop
supply chain and is typified by refurbishment and remanufacture. The main characteristic of
the closed loop system is that the demand for a product is matched with the supply of a used
product. Neglecting asset write-offs and exceptional activities the total population of the product between the customer and the service
provider remains constant.
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SAFETY& PRECAUTION
Engineering Workshop Safety Manual Custodian:
(a) Never adopt a casual attitude in the workshop and always be conscious of the potential
hazards.
(b) Ensure that personal clothing is suitable to the workshop conditions, e.g. Safety
footwear with steel capping. Thongs or open footwear should not be worn in the
workshop area. Singles, tank tops or similar clothing are not suitable for wearing in the
workshop.
(c) Always wear eye protection when using power operated hand or machine tools, or while
performing physical tests that could lead to eye damage.
(d) Use protective clothing and devices appropriate to the type of operation being carried out,giving due consideration to the work being carried out in the vicinity.
(e) Never run in the workshop or any laboratory.
(f) Never indulge in reckless behaviour in the workshop
(g) Always exercise care when opening and closing doors and entering or leaving the
Workshop.
(h) Do not carry out any work in isolation in the workshop; ensure that at least a second person is within call.
(i) Before any work is carried out in the workshop, permission must be obtained from the
Workshop Supervisor. Never undertake any work unless the potential hazards of the operation
are known as precisely as possible, and the appropriate safety precautions are adopted. Any
flame producing activity is not to commence until the immediate area has been cleared of
dusts. Many materials, which are non-flammable in a lump state, become quite volatile whenin
powdered or dust cloud form.
(j) Take additional care when carrying or moving any potentially hazardous
material or substance. Warning signs and barriers followed carefully.
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PRODUCT FLOW
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FACTORY LAYOUT OF BCL, CLIVE WORKS
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CONCLUSION
I am highly obliged to the H.R Dept. of BRAITHWAITE & CO. LTD. who allowed me to
pursue my summer training in such a big reputed organisation. BRAITHWAITE & CO. LTD.is one of the leading manufacturer in wagon industry where production is in bulk along with
safety of environment and employee.
During the training I came to know the various application of the mechanical equipment which I
have gone through in my studies. Mechanical equipment like gear box, shaft motor, bearing,
shearing machine, welding and its type, different types of machine, etc.. working are best
understood in practical knowledge rather than book knowledge. Engineering students foundindustrial visit highly helpful to understand the working of the different huge machine which is
impossible to make understood by the faculty in an organisation.
In BRAITHWAITE & CO. LTD. I have learned the working environment of company in
different department. All department follow safety norms and rules for the safety of each other.
Here I have understood that how important is summer education in the career of engineering
student.
We have to join industry after our studies and summer training provide me to establish our self
conveniently in the industry.