1. UNITED REFRIGERATION INDUSTRIES LTD
HYDERABAD (DAWLANCE)
Internship Report
Muhammad Anique (12ME117)
Dept. of Mechanical Engineering.
MEHRAN UET JAMSHORO.
(Report made by: Muhammad Anique (12ME117))
Day-1
•A little visit (introduction) of this industry.
•Introduction to HSE and compliance and Maintenance
department.

2. HSE & COMPLIANCE:
Health & Safety Environmental control and Compliance
department plays a vital role in prevention from accidental
incidents and hazardous chemical reactions during working
and minimizing it.
Impact of the heavy machinery and hazardous chemical
reactions on our surrounding and the workers can’t be
completely finished but it can be minimized and actions for
minimizing it, is the responsibility of HSE department and
several procedures are made for this purpose, these
procedures, logs and documentation of the procedures is
maintained by compliance department.
Priority parameters of liquid effluent and gases emissions,
drinking water tests, tests of food provided by canteen,
medical test of workers, etc are maintained by HSE
department. HSE department organize every year tests of
HIV, Hepatitis, and other tests for the workers who work
under the influence of chemical reactions like in plastic
molding shop or paint shop, etc. If any impact of chemical
reactions or noise effect of machines is observed on any
worker of industry causing effect to his health, then workers
will be transferred to other departments. If any accident
happens, causes damage to worker’s health, there will be
facility of first aid or hospitalization in case of emergency
and management will pay all the expanses.
PPEs are provided to workers for safety working and sensors
are fixed in the machinery to prevent accidents. It is the
responsibility of each department to co-operate with HSE
dept by maintaining the disciplinary actions as directed by
HSE.

3. Several procedures are made to implement in each section of
the industry to prevent accidents and documentation of each
procedure and the report of each incident and actions taken to
remove the thing which can cause incidents, log of all these
and documentation will be made by compliance department.
MAINTENANCE:
“ It is the process to increase the service life of any
machine or of any object.”
Factory contains a workshop for the maintenance of
different machinery parts. There are lathe machines, etc
and also welding can be done in that workshop.
For the maintenance of factory vehicles, another shop is
built.
Due to crises of electricity in our country, there are about 8
stand by generators in the factory, they can produce about
3.5 Mega watts of electricity by consuming diesel as fuel.
Most generators were of CAT Company.
•The main product of the factory is
“REFRIGERATORS”.
Day-2
Production-1
This section contain 4 shops like molding (injection
molding of plastic) shop, sheet extrusion shop, gas kit
shop & the forth one in which the internal frame of the
refrigerators was being made from plastic sheets coming
from sheet extrusion shop.

4. Further parts of refrigerator like cabinets, etc were being
made in Injection molding shop. In that shop the machines
having a die exerts force(pressure) on the melted plastic to
get the desired component of desired shape.
In Gas kit shop, the rubber seals i-e air tight seals for the
doors of refrigerators were being made. In gas kit shop, the
cooling of output material(i-e after processing) was done
by a system like a refrigerator, that’s why it is called Gas
Kit shop.
Day-3
Production-II
We moved to the section Production-II.
It includes three sections i-e shearing, sheet metal work,
and last one is welding.
In production-II, the whole body of refrigerator is made i-e
the whole work of metal is done in this part of the factory.
First of all the standard size sheet & coils of required
metals are brought from different factories, from our
country and also from foreign countries. These coils &
sheets are brought to shearing section in which the metal is
cut to required dimensions & sizes, so that these parts can
be used in forming the refrigerators.
The materials were of different metals like mild steel, ABS
plastic, VCM material, GI, Aluminum, etc.
The sheets were being cut to make different parts of the
frame of refrigerators like cabinet sheets, ref: door, freezer

5. door, front cross piece, compressor support sheet, side
panel, intermediate cross piece, etc.
Then these required pieces were brought to the sheet metal
section, in which further processes were being done on
those pieces like knoching, bending to convert these sheet
pieces into required 3-D part of the frame. As to convert
cabinet sheet into the u-type cabinet sheet, first the
knoching was done with the help of a die exerting force on
the sheet & then bending was done by a machine with the
name OLMA then we move to the
welding section. After sheet metal working the different
individual parts are brought to the welding section, where
the spot welding is done to join the parts to make the
whole structure of the refrigerator.
Spot welding is a type of welding that joins two materials
by melting them at a point. After the joining process i-e
welding process these frames or we can say the skeleton of
refrigerators were brought to painting section with the help
of conveyer belt.
Day-4
Production-V

6. Today we moved to the production-v section of the factory. It
contain four sections.
i-Pre foaming. (i-e door pre foaming & cabinet pre foaming)
ii-Foaming. (i-e door foaming & cabinet foaming)
iii-Assembly line.
iv-Packing.
Pre foaming is the process that is done on the metallic body
of the ref; and door before foaming to prevent leakage of
foam.
After painting the cabinet is brought to the pre foaming
section then first of all a back side panel is attached to the
back side of cabinet body then evaporator & thermo pole
frame of refrigerator are fixed to the metallic cabinet and
finally taping is done and same is done for doors. Now, the
cabinet is brought to foaming section.
The foam is combination of 3 materials, that are inserted into
body after mixing with very high pressure in bars. Then
undergoing some exothermic reactions into the body, these
materials now make the foam in solid form, initially was in
liquid form. Same process is done for doors.
The foam is made by the combination of following three
materials:
•Polyol
•R141B (help to spread and rise the foam)
•Isocynite.
Foam is filled in the body and doors to give the stability
and proper shape to the refrigerator.

7. Day-5
Assembly line
Now the body and doors moved to the assembly line.
•First of all compressor Cabot(support) is fitted at the
bottom through nut and bolts.
•LEDs and regulators are installed.
•Bottom condenser is fixed.
•Doors are attached with hinges.
•Compressor is fitted, freezer pipe is fixed.
•After this, condenser is fitted at back side.
•Then all the wiring is done.
•Then welding is done join compressor, evaporator
lining.
•Now, cleaning of linings of evaporator and compressor
is done with vacuum cleaning machine, this process
continues up to 30 minutes.
•After cleaning process, the refrigerant R134 is filled
with nozzle for 20 seconds.
•Then finally quality is checked(i-e checking electrical
faults, etc).
•Then cooling temperature and all faults are checked
with the help of sensors (process is of 70 minutes).
•Then “DAWLANCE” monogram is attached.

8. DAY 6
PAINT SHOP
First phosphating is done on the cabinets, coming
from production-ii through conveyer belts, then
powder painting is done by robots with injector slue.
Then cabinet is baked so that painting can be strong.
THE END.