Interny Report Raw

7/23/2019 Interny Report Raw

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Report on Industrial Attachment in Sinha Rotor Spinning Limited

CHAPTER VII

MAINTENANCE OF MACHINES

BANGLADESH UNIVERSITY OF TEXTILES



5/44

Maintenance

Maintenance point in B!o" Roo#$

MACHINE

NAME

MAINTENANCE

POINTS

%OR& TO BE DONE

Unifoc A11

Chasis Clean properly by compressed air.Take o Unit Clean properly by compressed air.Take o roller Check ! clean properly by

compressed air.Retainer roller Check ! clean properly by

compressed air.Con"eyor belt Check ! clean properly by

compressed air.

Sensor Lenses to be cleaned by so#t cloth.Control cabinet Clean by skilled person..

Uniclean $11

Cleaning cylinder %roperly clean ! check any damage.Cleaning grid Check any damage ! position.

Airlock cylinder Check ! clean properly.&ear and dri"e motor Clean properly.

Sensor Lenses to be cleaned by so#t cloth.

Unimi' $ ()*

Chamber Clean properly by compressed air.Upright lattice %roperly clean ! check any damage.$lending roller %roperly clean ! check any damage.Take o roller %roperly clean ! check any damage.

Sensor Lenses to be cleaned by so#t cloth.+,belt pulley Clean- check belt ! chain tension.

Unife' $ /

Lamellar chute Cleaned by so#t cloth ! compressed

air.%er#orated roller Check ! clean properly by

compressed air.0pening !cleaning

cylinder

%roperly clean ! check any damage.

Cleaning grid Check any damage ! position.&ear and dri"e motor Clean properly.


ossi

Tube light Clean by so#t cloth.CC2 camera Lenses to be cleaned by so#t cloth.

Sensor Lenses to be cleaned by so#t cloth.3aste opener

$ 4)5

Upright lattice %roperly clean ! check any damage.+,belt and pulley Clean- check belt ! chain tension.

6ono cylinder

$ 7)1

$eater %roperly clean ! check any damage.

6i' bale opener

$ 8

Upright lattice %roperly clean ! check any damage.+,belt and pulley Clean- check belt ! chain tension.



6/44



Maintenance ca''ie( in B!o" Roo#$

Pe'io(ic #aintenance $ A)te' * to +, (a-

Maintenance Pe'io( $ F'o# .a/#/ to 0p/#/

No o) #en in #aintenance o) B!o" 'oo# to ca'(in1 #ac2ine

a'e ten

Maintenance Aitance $ 3

Maintenance He!pe' $ *

Sc2e(4!e #aintenance $ A)te' t"o "ee5

P'e6enti6e #aintenance $ + #ont2 o' 3 #ont2/

Maintenance Too! )o' 7!o" 'oo# to ca'(in1 #ac2ine$

A(84ta7!e 'an1e

Sc'e" ('i6e'

Ha##e'

Spance' etc/

L47'ication c2e(4!e$

+ #ont29 3 #ont29 : #ont29 + -ea'9 + an( a 2a!) -ea'/

D4'ation o) #aintenance )o' ca'(in1 #ac2ine $ ;/0 to 3 2'/

D4'ation o) #aintenance )o' 7!o" 'oo# $ 3/0 to < 2'/

Maintenance p'oce(4'e$

At the beginning o# the maintenance operation- all the co"ers o# the

machines are opened and the machine is cleaned 9ith a cloth internally. This iscalled as general cleaning. Inside the machine the con"eyor belt tension :i#

present; is checked and 9ooden lattice is also cleaned and con"eyor belt is

cleaned i# needed. am in the t9o sides o# spiked lattice is opened and under

co"er o# spiked lattice is opened and cleaned. am in the sides o# bearing house

o# e"ener roller 9ith oils or lubricants as instructed by the manu#acturer. China

bo' is checked and


7/44



E=a#p!e o) #aintenance p'oce(4'e int'4cte( 7- t2e

#an4)act4'e' $

=ame o# the machine > Unifock

6aintenance and Lubricating schedule > ?"ery month

Item Actoin%lucker roller Inspect #or sign o# damage@ead sle9ing ?nsure clean

Tra"erse Inspect and clean co9l plate grillele'ible pipe check condition

Internal structure comb ?nsure clean

Maintenance an( L47'icatin1 c2e(4!e $ Si= #ont2

Item Action%lucked roller Check condition o# the teeth

%lucked roller dri"ers +,belt dri"e check@ead li#ting dri"e 2uple' dri"e chain,chain tension@ead sle9 dri"e 2uple' dri"e chain,chain tension

Transport #an dri"e 2ri"e belt check tension

Maintenance an( L47'icatin1 c2e(4!e$ One -ea'

Item Action$earing #or plucker roller Replenish lubricant using shell

Cutting head Al"ania,* or eBui"alentTo9er support head 2o

L47'ication o) 2ea( ('i6e 4nit$

6obil synthetic oil ?24)4*/ "iscosity class +&/ or eBui"alent.

Lubrication o# head sle9ing dri"e unit> Shell $% mineral oil "iscosity class +&44/ or eBui"alent.

Lubrication o# tra"erse dri"e unit> Shell $% mineral oil "iscosity class +&44/ or eBui"alent.

Na#e o) t2e #ac2ine$ Uni#i=

Maintenance an( !47'icatin1 c2e(4!e$ E6e'- t2'ee

#ont2/

Item Action


8/44

+ariable speed #or #eed rollers 2uple' dri"e chain,chain tension+ariable speed #or beater rollers 2uple' dri"e chain lubricant using-

gear bo' check oil le"els and replenish

i# necessary.Con"eyor belts 2uple' dri"e chain to roller lubricating

used.BANGLADESH UNIVERSITY OF TEXTILES


Maintenance c2ec5 !it o) ca'(in1 #>c $

6AI=T?=A=C? AR?A 6AI=T?=A=C? %0I=TS 30RD T0 $? 20=?

Card C 51

Aero #eed Check and clean.0pening roller Check and clean.

Lap roller Check and clean.

eed roller Check and clean.Licker in Check and clean.

lat Clean properly ! check

sharpness o# the 9ire.All lat belts Clean- check tension !

ad


9/44



Maintenance point F'e?4enc-

Suction points and hoses 4 9eeks

Interior o# the coiler 4 9eeks

2etaching unit 4 9eeks

Check the doer 4 9eeks

Clean fats re"ersing points ! the space

Inside the fats 4 9eeks ?mpty condenser * months

Check the tension ! condition o# the belts 4 9eeks

Check the condition o# the fat bar months

Clean ! check carding proEler * months

Check the tension o# the fat belt 4 9eeks

Cylinder inside ! Cylinder gasket months

Check the stripping kni"es * months

Check the bottom o# the coiler ! coiler tube * months

Check setting months

Maintenance o) ('a" )'a#e9 co#7e' @ i#p!e=$

=ine person are in"ol"ed in 2- C- S maintenance.

=umber o# maintenance assistant F 7

=umber o# maintenance helper F 5

Schedule maintenance F A#ter 4 9eeks

%re"enti"e maintenance F 1 month- 4 month- * month

Maintenance c2ec5 !it o) B'ea5e' ('a"in1$

6AI=T?=A=C?

AR?A

6AI=T?=A=C? %0I=TS 30RD T0 $? 20=?

0uter sur#ace 0uter sur#ace o# the 9hole

machine

Clean properly by

compressed air.

2ra#ting Gone

%ressure bar- dead 9eight-

condenser- trumpet.

Clean properly check its

condition.Top roller Cleaning by 9ashing po9der


10/44


11/44

Sa#ety 2e"ice Sa#ety s9itch- pneumatic

s9itch

Check sa#ety de"ice.

=ut and bolt 6ain gear bo'- dra#ting gear

bo'- lap plate etc.

Tightness check ! make

correct i# reBuired.?lectrical

#unction

6ain motor- electronic board-

connection board etc.

To be cleaned ! checked by

electrical #unction.Lubrication 6ain gear bo'- dra#ting gear

bo' and all greasing point

Check oil le"el ! put oil i#

reBuired- also check greasing.

Maintenance p'oce(4'e o) co#7e'$

According to the schedule maintenance o# particular

m)c is done. irst gear bo' is opened- then all the gears are cleaned and grease

is applied to gears and co"er is set again. Top detaching roller- bottom detaching

roller- top dra#ting roller- bottom dra#ting roller are opened and spirits is ser"ed

to clean these rollers are set to the machine. Sli"er table- sli"er guide- top comb

nipper- cushion plate- #eed roller- lap roller- cylinder- cylinder brush- 9astage

suction pipe- coiler bo' and can 9heel co"er are opened and cleaned and grease

is applied to e"ery bearing and gearing. Then all the nuts and bolts are checked.

In bottom detaching roller corium 15( is used. I# any part o# the m)c is damaged-

it is changed or repaired. A#ter this- machine is started.


Maintenance c2ec5!it o) Co#7e'$

6aintenance Area 6aintenance points 3ork to be done2ra#ting system Top bottom and stripping

roller

Clean %roperly ! check

physical condition i#

reBuired.

&auge points

Top comb and circular comb

setting and condition.

&auge check ! ad


12/44

plate.&ear bo' All gear Check gear condition !

correct i# reBuired.0il le"el in gear bo' Check oil le"el and apply oil

i# necessary

?lectrical parts 6otor- s9itch- connectionboard- electronic board-

motor #an

Clean ! check by electronicperson.

Can changer Chain tension on turn table Clean ! check condition-

ad


13/44

?cartment setting change

L47'ication point $

2ra#ting system

$ottom detaching rollers Top detaching rollers

Rush

=ipper

&ear bo'

Circular comb

Table calendar roller dri"e sha#t

Spa'e pa't !i)e $

%arts Li#e timeTop comb 1,1.5 years

Cots 4,*years$earing years

Maintenance p'oce(4'e o) ('a" )'a#e$

irst gear bo' is opened and cleaned Enally 9ith cloth. Then grease

is applied to gears. Roller part is opened and cleaned 9ith spirit. In all thebearing o# co"er is opened and cleaned. In the bearing gears- grease is applied.

All the settings- nuts and bolts are checked. I# necessary any parts o# the

machine can be changed.


Maintenance c2ec5 !it o) B'ea5e' ('a"in1$

6AI=T?=A=C? AR?A 6AI=T?=A=C? %0I=TS 30RD T0 $? 20=?0uter sur#ace 0uter sur#ace o# the

9hole machine.

Clean properly by

compressed air.2ra#ting Gone %ressure bar- dead

9eight- condenser-

trumpet.

Clean properly check its

condition.

Top roller Cleaning by 9ashing

po9der ! grinding a#ter

5/// hour.

$ottom roller Clean ! check its gauge-reset i# reBuired.


14/44

&ear bo' %lanetary gear bo' Check oil le"el ! put oil i#

reBuired.?lectrical parts 6otor- #an- creel light

barrier

Clean ! check by

electrical person.=ut,bolt Top roller lock- pulley nut,

bolt- creel nut,bolt-dra#ting Gone nut,bolt.

Check tightness ! make

per#ect tightness i#reBuired.

$elt tension and

condition

lat belt- +,belt- timing

belt

Clean all the belt- check

tension ad


15/44

po9der ! grinding a#ter

5/// hour.$ottom roller Clean ! check its gauge-

reset i# reBuired.&ear bo' %lanetary gear bo' Check oil le"el ! put oil i#

reBuired.?lectrical parts 6otor- #an- creel light

barrier

Clean ! check by

electrical person.=ut,bolt Top roller lock- pulley nut,

bolt- creel nut,bolt-

dra#ting Gone nut,bolt.

Check tightness ! make

per#ect tightness i#

reBuired.$elt tension and

condition

lat belt- +,belt- timing

belt

Clean all the belt- check

tension ad


16/44

Maintenance c2ec5!it o) Si#p!e=$


$ack side

Creel Clean ! check bearing

condition.

Sensor Clean by so#t cloth.$alancing spring and

chain

Clean ! check greasing.

Creel chain Clean ! check greasing.Rack groo"e Clean ! check greasing.

&rease le"el in the

grease pump

Check grease le"el !

apply grease i# reBuired.

2ra#ting Gone

Top and bottom roller Clean ! gauge check !

ad


17/44

I# any part o# machine is damaged or rough- it is changed or repaired. In this

9ay- all the 9orks o# maintenance is done success#ully.

Maintenance c2ec5!it o) Rin1 )'a#e$

6AI=T?=A=C? AR?A 6AI=T?=A=C? %0=TS 30RD T0 $?20=?

Cog belt tension Cleaning ! checking condition i#

reBuired.

*/ days

$ottom apron tension

bracket

Cleaning ! checking condition i#

reBuired.

*/ days

Type tension roller

condition


reBuired.

*/ days

All type o# timing belt

condition #or head stock !

tail stock


reBuired.

*/ days

R0$0 do- li#ting rod- dri"e Cleaning ! checking condition i#reBuired.

*/ days

$rushes o# ser"o discs Cleaning ! checking condition i#

reBuired.

*/ days

Cot roller Cleaning ! checking condition i#

reBuired.

*/ days

Cradle Cleaning ! checking condition i#

reBuired.

*/ days

Top ! bottom apron Cleaning ! checking condition i#

reBuired.

*/ days

Spindle ! spindle break Cleaning ! checking condition i#reBuired. */ days

%neumatic line- mono

meter ! pressure regulator


reBuired.

47/ days

%ressure hose condition Cleaning ! checking condition i#

reBuired.

*/ days

&ripper membranes

condition


reBuired.

*/ days

ilter bo'- Elter cloth- seal

o# Elter drum


reBuired.

47/ days

Suction tube gauge 1mm Cleaning ! checking condition i#

reBuired.

*/ days

Sensors Cleaning ! checking condition i#

reBuired.

*/ days

Ring cup- balloon control

ring ! lappet guide


reBuired.

14/ days

Ring rail- lappet bar setting

gauge


reBuired.

14/ days

Spinning tra"eler cleaner

gauge


reBuired.

14/ days

Auto doer- beam !

con"eyor belt centre


reBuired.

/ days

Roller eccentricity ! Cleaning ! checking condition i# (*/ days


18/44

bearing condition check

:back ! middle roller

reBuired.

ront roller eccentricity-

bearing condition


reBuired.

*5 days

2ri"ing sha#t eccentricity !

bearing condition check


reBuired.

(*/ days

6achine le"eling Cleaning ! checking condition i#

reBuired.

(*/ days


Maintenance o) 'in1 )'a#e$

T9enty three persons are in"ol"ed in ring #rame maintenance

=o o# maintenance assistance F

&rade F 1M4&rade F 4M7

=o o# maintenance helper F 1(

Schedule maintenance > a#ter one month

Cleaning- checking and lubrication are included in ring #rame maintenance

Lubrication schedule > months :spindle oil;- grease:dri"ing sha#t;- 1 year

:gear oil;- 1 month :bottom roller;

Maintenance o) 'in1 )'a#e$


3a'ing de"ice

3a'ing sha#t Cleaning ! checking any

damaged :c9#;%ressure #ork Cleaning ! checking any

damaged :c9#;Harn trap Remo"e the yarn

accumulation&uide plate Cleaning the 9a' properly

Splice unit

Splice cutter Cleaning and apply RS,7//%rism and its co"er Cleaning the prism by

compressed airUnt9ist noGGle Clean)9ash by petrol !

brush- checking the position.Clamping guide Cleaning by cloth.

eeder guide Checking the position.

Tension de"ice

Rubber slee"e Cleaning ! checking.Sensor Cleaning care#ully ! ad


19/44

oil.Cradle sensor Check its co"er and scre9.

6agaGine

Circular magaGine Check- clean and reE'ing.Chute door Cleaning and centering

check.

?lector Cleaning and mo"ementcheck.

$obbin peg Cleaning.Con"eyor belt Tensioning de"ice Remo"e co"er #rom the belt

tensioning de"ice o# the

con"eyor belt ! remo"e yarn

1 month

Maintenance c2ec5!it o) Roto'$

6AI=T?=A=C? %0I=TS 30RD T0 $? 20=? I=T?R+AL

Rotor Cleaning by dish9asher. 15 days=oGGle Cleaning by detergent. 15 days


20/44

0pening roller Cleaning by compressed air. 15 daysRotor chamber Cleaning by compressed air. 15 days

$elt- pulley Clean all the belt- check tension ! ad #or le"eling parts o# m)cs.. $obbin rail use to le"el the bobbing rail.. 3eight gauge > use to alignment o# the arm pressure.1/.Carding gauge11.0utside calipers > use to measure the dia.14.Roller setting gauge > use to set roller to roller distance.1*.L,key17.Ring spanner15.Spindle gauge > use to set spindle at the center o# the

ring.1.2ouble end spanner > use to open the nut bolts.1(.So#t hammer1.%uller1.0il can4/.&rease gun41.=ose pliers.


21/44


CHAPTER VIII

UTILITY SERVICES


22/44

Uti!it- e'6ice

The utility department undertakes the #ollo9ing units>

1. %o9er supply . 3orkshop ser"ices

4. A)C %lant (. 3ater treatment ! 9ater supply

*. 3ater collection plant . Ci"il 9orks

7. Chiller . ire,Eghting system

5. $oiler

Po"e' S4pp!- Gene'ato'

Sinha spinning mill generate its o9n po9er. It has si' generator in SRSL andthree generator in SSL. The generator speciEcations are gi"en belo9>

&enerator o# SRSL>

=ame> ?=$AC@?R ?ngine

6odel> &S *4/

Country o# origin> Austria

Hear o# manu#acturing> 4///

Necea'- in)o'#ation$

=umber o# &enerator> :5 generator runs #or po9er supply and 1 stand by;

Capacity> 1// D9

%roduction reBuirement> /,(/N o# capacity

Type o# &enerator> &as &enerator

SynchroniGing system> Auto synchroniGing system

Controlling system> %LC :%rogramming Logic Control; Controlling system

=umber o# cylinder per generator> 4/

&as source> TITAS &as


23/44

&as line pressure> 17.5 %SI

R%6> 15//

+oltage> 715

reBuency> 5/@G

&as consumption per day> 1///,4////m*

%rice o# gas> 7.1taka)m*

I!an( pa'a!!e! ope'ation$

Cylinder ?'haust &as temperature>

A"erage > 574oC

6a'imum > 554oC

6inimum > 5*7oC

Return 9ater temperature> *.oC

acket 9ater temperature> 1.oC

acket 9ater pressure> 1.11 bar

?ngine oil temperature> (./oC

?ngine oil pressure> 7.4 bar

&enerator o# SSL>

=ame> ?=$AC@?R ?ngine

6odel> &S *4/

Country o# origin> Austria

Hear o# manu#acturing> 4//

Necea'- in)o'#ation$

=umber o# &enerator> *Capacity> 1/7 D9

%roduction reBuirement> /,(/N o# capacity

Type o# &enerator> &as &enerator

SynchroniGing system> Auto synchroniGing system

Controlling system> %LC :%rogramming Logic Control; Controlling system

=umber o# cylinder per generator> 4/

&as source> TITAS &as


24/44

&as line pressure> 1/ %SI

R%6> 15//

+oltage> 715

reBuency> 5/@G

%rice o# gas> 7.1 taka)m*

Boi!e'$

=umber o# boiler> 1

Capacity> 1/ Dg)hour

%roduction> 5. Dg)hour

Source o# heat> ?'haust o# generator

Temperature raised> 55/oC :6a'imum;

Steam pressure> 7/5 Dg)cm*

6anu#acturer> @urst $oiler- India

Serial no> $A.$0. 4**4

Co#p'eo'

Co#p'eo' +

6anu#acturer> Comp Air 2rucklu#ttechnik &mb@- &ermany

Type> L1/,A :2elcos *///;

+oltage> 7//+

Hear o# 6anu#acture> 4//4

Serial no> *7/4/)/4/

6ore in#ormation>Capacity> 4.1/m*)min

6otor> 1/D3

Suction pressure> 1bar

Speed> 15//rpm

Stage pressure> bar

Compression medium> Lu#t)Air


25/44

Recei6e'$

6anu#acturer> Lohenner &mb@ ! C0- &ermany

Serial no> 15(

2ate o# 6anu#acture> 4./.4//4

Mo'e in)o'#ation$

Capacity> 4/// L

3orking pressure> 11 bar :ma'imum;

3orking pressure> / bar :minimum;

Test pressure> 15. bar

Co#p'eo' ;

6anu#acturer> Comp Air- ?ngland

6odel> 44/=A

Serial no> 17)/4(

Hear o# manu#acture> 1(

Mo'e in)o'#ation$

Capacity> 4.1/m*)min

6a'imum pressure> bar

6otor :D3 input;> 1.1 D3

6otor R%6> 17/

+oltage> 715+

%hase> *%h

reBuency> 5/@G

Co#p'eo' 3

6anu#acturer> Atlas Copco

6odel> &A (5

Serial no> 7(*4(


26/44

Hear> 4//1

Country o# origin> $elgium

Mo'e in)o'#ation$

6a'imum 9orking pressure> (.5 bar

ree air deli"ery> 1)sM4*

=ominal sha#t po9er> (5D9

Rotational sha#t speed> *//./

&ross 9eight> 1// Dg

Co#p'ee( Ai' D'-e'$

6odel> s,1//Ac

2ate o# manu#acture> 4./.4//1

Capacity> 17.7 =m*)min

6a'imum inlet temperature> (/oC

6a'imum inlet pressure> 1/ Dg)cm4

Amp> (

+oltage> 715+

%hase> *

reBuency> 5/@G

Co#p'eo' Atlas Copco

6odel> &A (5

Serial no> 7(45*Hear> 4//1

Country o# origin> $elgium


27/44

A>C p!ant$

The #actory consists o# E"e A)C plants in SRSL and the t9o A)C plant in SSL.

The A)C plant in SRSL #or

$lo9 room

Carding

Simple'

Rotor

Ring

AC =umber Use #or the Area1 $lo9 Room4 Carding! dra9ing :Rotor side;* Carding- dra9ing- comber ! simple'7 Ring :?ast ! 3est side;5 Rotor ! Auto cone

The A)C plant in SSL is #or

Rotor

The manu#acturer o# A)C plant #or SRSL ! SSL is $?ST AIR.

The main task o# A)C plant is to maintain speciEc humidity in the #actory inthe shed- #or this it circulates the cooling air. A)C plant 9ithout chilling helps tomaintain only the R@N 9ithout much diculty. They can be classiEed generallyas either unitary or central station. Central system is the most 9idely used in thete'tile industry.

T2e -te# p'incipa! co#ponent a'e$

1. Air mo"ing de"ices,#ans.4. 6i'ing de"ices #or air and 9asher i.e. Air 9ashers.

Air mo"ing de"ices are al9ays t9o types>

1. Return Air #ans4. Supply Air #ans

The return air #ans return the air to the plant room #rom 9here it may circulate ore'hausted in the mill.

The supply o# air to the mill #rom plant room.

Air 9asher is a de"ice #or intimately mi'ing 9ater and air. The mi'ing 9ater andair supply by noGGle.


28/44

N4#7e' o) )an in (ie'ent AC$

=ame o# #ans)pump AC 1 AC 4 AC * AC 7 AC 5Return an 1 1 * *Supply an 1 1 * 4

3aste 9ater pump 1 1 4 * 16ain suction #an 4 4 4

2isk,pre separator 4 1 46aterial trans#er #an 5 1 4 4 *

iber compactor 4 , 4 1 12uct ?"acuations #an 1 1 4 7 4

Rotary air #an 1 1 4 7 4

T2e )o!!o"in1 co#ponent a'e a #4t in an A>C p!ant$

Return Air and Supply Air #ans.

Air 9asher

Return Air foor grills.

?'haust damper

resh air damper

Supply air ducts and grills

ace and bypass dampers on the air 9asher

Control panel #or Automatic control the R@ and Temperature.

The #resh air come #rom outside- air is sucked by #an. Then the air humidiEedin the 9asher room. In the 9asher room air and 9ater is mi'ing then it supplyby noGGle through the supply air #an. Supply air #an supply the cooling airthrough the air foor grills. The in"isible 9aste is separated by Elter and #reshair sucked by return air. Then the air is circulating again in the 9asher room. Itis continuous process.

The humidity and temperature controlling depend on the machineper#ormance- machine li#e and on personnel.

A)C plant is must needed #or te'tile industries mainly spinning shed, i# A)Cplant 9ill run smoothly then the operators 9ill #eel com#ortable andper#ormance 9ill be optimum.

0ther9ise all these 9ill suer.


29/44

S4pp!- an( Ret4'n Ai' Fan capacit-$

Suction Supply air capacity Return air capacityCarding (7/// C6@ 1(1/ C6@2ra9ing (//// C6@ 4*(4/ C6@

Lap #ormer (//// C6@ 4*(4/ C6@Comber (//// C6@ 4*(4/ C6@Simple' (//// C6@ 7(// C6@

Ring 754/// C6@ 7*7/ C6@Auto cone (//// C6@ (// C6@

Rotor 1//// C6@ 1///4/ C6@

N4#7e' o) Ai' C2an1e C-c!e pe' 2o4'$Suction Air Change Rate :per hour;Carding 4.(2ra9ing 11.

Lap #ormer 11.Comber 11.Simple' 11.

Ring 7/.7Auto cone 4/.

Rotor 4(.*

I#po'tance o) RH an( Te#pe'at4'e$

The atmospheric conditions 9ith respect to temperature and humidity play"ery important part in the manu#acturing process o# te'tile yarns. Theproperties like dimensions- 9eight- tensile strength- elastic reco"ery-electrical resistance- rigidity etc o# all te'tile Eber 9hether natural orsynthetic are infuenced by moisture regain.

6oisture regain is the ratio o# the moisture o"en,dry 9eight o# the materiale'pressed as percentage. 6any properties o# te'tile materials "eryconsiderably 9ith moisture regain- 9hich in turn is aected by the ambient

Relati"e @umidity :R@; and Temperature. I# a dry te'tile material is placed in aroom 9ith a particular set o# ambient conditions- it absorbs moisture and incourse o# lime- attains eBuilibrium.


30/44

Some physical properties o# te'tile materials 9hich are aected by R@ isgi"en belo9>

Strength o# C0TT0= goes up 9hen [email protected] goes up

Strength o# +ISC0S? goes do9n 9hen [email protected] goes up

?longationN goes up 9ith increased [email protected] #or most te'tile Ebers

The tendency #or generation o# static electricity due to #riction

decreases us R@ goes up

At higher le"els o# R@- there is also a tendency o# the Ebers to slick

together

Temperature alone does not ha"e a great eect on the Ebers, @o9e"er thetemperature dictates the amount o# moisture the air 9ill hold in suspension andthere#ore- temperature and humidity must be considered together.

IS0 Standard O 1* deEnes Standard Atmospheric Conditions>

Temperature o#

Relati"e humidity (5N

RELATIVE HUMIDITY @ TEMPERAURE FOR DIFFERENTDEPARTMENT$

Section [email protected] TemperatureoC o

$lo9 Room 7. *.5 1/1.*Carding 57.5 *(. 1//.44Comber 55./ *(.5 .5Simple' /.4 *(.( .

Ring 5.* *./ 1//.7Auto coner *./ *./ 1/4.4

Rotor 5. *.1 1/4.*


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C2i!!e'$

The main purpose o# chiller is to supply chilled 9ater to the A)C plant. @ere threechiller in SRSL and one chiller in SSL.

C2i!!e' +

6anu#acturer> Therma' Ltd- India

Type> 2?

6odel> ?3 ((/+

Serial no> 1

6anu#acturing date> August- 4///

Ot2e' in)o'#ation$

Capacity> ((/ TR

Cooling system> Steam heated "apor absorption cooling system

=o. o# cooling to9er> 4

Steam pressure> ./ Dg)cm4

Temperature o# the cooling 9ater> 4*oC :it should beP 1/oC;

+oltage> 715+

%hase> %h

reBuency> 5/@G

C2i!!e' ;


Type> @ot 9ater

6odel> T@3,LT)1

Serial no> 4

6anu#acturing date> 0ctober- 4///


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Ot2e' In)o'#ation$

Capacity> 1/ =om. RT :=ominal Re#rigeration o# tons;

Cooling system> @ot 9ater

Temperature o# hot 9ater> (oC



Temperature o# the cooling 9ater> 4*o

C :it should beP 1/o

C;

+oltage> 715+

%hase> * %h

reBuency> 5/@G

C2i!!e' 3it (oe not "o'5


Type> @ot 9ater

6odel> T@3,LT)74

Serial no> *

6anu#acturing date> 6arch- 4///

Ot2e' in)o'#ation$

Capacity> 745 =om. RT :=ominal Re#rigeration o# tons;

Cooling system> @ot 9ater

Temperature o# hot 9ater> (oC



Temperature o# the cooling 9ater> 4*oC :it should beP 1/oC;

+oltage> 715+

%hase> * %h


33/44

reBuency> 5/@G

Fi'e Fi12tin1 S-te#$

Cotton Eber catches and spreads Ere "ery rapidly. So any kind o# accidentsrelated to Ere generation can turn into a de"astating calamity in cotton spinningmill. That is 9hy the #actory has a 9ell,eBuipped EreEghting system. 3ater linesare spread throughout the #actory. ?'ternal and internal Ere Eghting groups areal9ays ready to action. Some 9orkers practice to go out Buickly #rom the #actoryduring Ere alarm is start. It helps to make any action against Ere and reduce anykind o# in


34/44

Sa)et- a1aint 'e 2aa'($

Automatic Ere door,

0ne pair bet9een $lo9 room and pre,spinning 0ne pair bet9een pre,spinning and spinning

0ne pair bet9een spinning and Enishing

Fi'e12tin1 e?4ip#ent$

Section =o. o# Ere e'it =o. o# 9ater drum 3ater in each

bucket$lo9 Room 5 1/

%re,spinning 1* 1/Spinning 4/ 7 Harn Enishing 5 , ,

%o9er sub station * , ,Store ! godo9n * 7 &enerator house 4 , ,

Total 54 44 *

Hoe pipe point$

Location o# points =o. o# point

=orth,9est o# $lo9 room 4South,9est o# $lo9 room 1Simple' gate &enerator 4

?ast o# yarn Enishing section 1

Po"e' 4pp!- @ Po"e' con4#ption$

6ain po9er source> &enerator

Substitute> 2?SA

DESA Line$

Supply> 1715 +olts

=o. o# step do9n trans#ormer> *

Trans#ormer capacity> 15//D+A

=o. o# lo9 tension distribution board> 17

luctuation> 4,5N


35/44

H4#i(ication P!ant

Country o# origin> Singapore

Total no. o# machine> 5

6achine %resentation>

or $ack section> 1

or Ring section> 4

or Enishing section> 1

Comber and Simple'> 1

=o. o# air change :iltration;> */ times per hour

Air spreading system> by dierent duel line

Re!ati6e H4#i(it- in Die'ent Section$

$ack %rocess> 75N

Ring Section> 54N

inishing Section> 5N

Co##ent$

Sinha Rotor Spinning 6ills Ltd. try to maintain proper humidity reBuired#or dierent section. So less problem is occurred in processing materials #romback to Enishing section. There is no system #or temperature controlling systemby slightly controlling the humidity.


36/44

CHAPTER IX

STORE @ INVENTORY CONTROL


37/44

Sto'e @ In6ento'- cont'o!

Ra" #ate'ia!$

Import processing by head oce

%hysical recei"ed by stock spare LC or in"oice as bale or Dg. The ra9 materials are pro"ided #or lay do9n according to lay do9n plane

gi"en #rom Q.C 2epartment.

T2e in6ento'- -te# a'e (i6i(e( into )o4' 1'o4p$

1. Ra9 cotton in"entory4. inisher yarn in"entory*. 3astage yarn in"entory7. Spare parts ! materials in"entory

The in"entory is maintained in Erst in Erst out system. 3hen store keeper recei"e

some goods- they 9rite a note in the recei"e book. They also in#orm in"entory

related department. Then the department made 6RR :6aterial Recei"ing

Report;. They made $I= card 9hich contain its name- amount and other

necessary in#ormation. Then the materials are stored in the store.

I# any department reBuires any item- they prepare a SR :ReBuisition Slip; #or the

particular item and send it to store. The store then checks its a"ailability and

deli"ers as reBuired.

+/ Ra" cotton in6ento'-$

In case o# ra9 cotton in"entory- QA2 department sampling e"ery bale and

numbering the bale according to micronaire "alue.

;/ Fini2e( -a'n in6ento'-$

2ierent lots o# Enished yarn are gi"en to the production department by Trans#er

6emo. The store produces its daily- monthly production report based on the

yarns are deli"ered to order o# the marketing department- the yarns are

deli"ered to the buyers.

3/ %ata1e -a'n in6ento'-$

2ierent 9astage produces #rom dierent department. Such as hard 9aste-

pneumaEl- S- dropping etc. They are measured e"en day and trans#erred to

store same procedure.

1; Recei"ed #rom production department

4; 2eli"ered to customer


38/44

*; Count- Lot or LC

En1inee'in1 toc5 o' pa'e$

All kind o# spare parts are recei"ed and stocks are maintained.

At Erst recei"ed by reporting system

Stock purchase reBuired

6aterial recei"ing report :66R;

%osting to bin card

Issue

$alance position

=.$> &ate pass is reBuired #or recei"ing or deli"ery.

4a!it- ce'ti)- 7- t2e )o!!o"in1 ite#$

S%R no.

6R% no.

Chalan no.

User name.

Re#erence

Re#a'5$ Sinha Spinning mill tries to maintain proper stock report reBuired #or

dierent section. So less problem is occurred in processing materials #rom back

to Enishing section. The store department ! in"entory control system o# this mill

is 9ell organiGed.


39/44

CHAPTER X

STUDY OF YARN COSTING

@

MAR&ETING ACTIVITIES


40/44

St4(- o) -a'n cotin1

T-pe o) cot$There are three types o# cost mainly related to the yarn costing.

These are gi"en belo9>

6anu#acturing cost Selling cost

6arketing cost

P'o(4ct Cot$

%roduct cost consists o# the #ollo9ing costs>

Cost o# ra9 materials>

L)C price

C ! +alue

Landing cost Transport cost

Carrying- Loading ! Unloading cost

Con6e'ion cot$

$ale management cost

3astage cost

6achine cost

6achine depreciation

uel cost

Lubrication cost %o9er cost

Spare cost

6anpo9er cost

Salary ! 3ages

$ank interest

?stablishment cost

Pac5in1 cot$

%aper cone

@.2.%.? bag %.% bag) @osiery bag ) Cartoon

Label

ute t9ine

3rapping

Fo'#4!a o) 6a'io4 cot$


41/44

6arketing costM 6anu#acturing cost Selling Cost 2istribution Cost

Selling CostM 6anu#acturing cost certain amount o# proEt

&ross proEtM Selling cost F 6anu#acturing cost

=et proEtM &ross proEt F :$ank charge All sorts Ta'es;

Ya'n P'ie$

Harn priGe depends on the #ollo9ing #actors.

Ra9 material cost ,,,,,,,,/,(/N

Spare cost ,,,,,,,,,,,,,,,,,,4,4.5N

inancial charge ,,,,,,,,,,14,1(N

3ages ! Salary ,,,,,,,,,,,*,1/N %o9er cost ,,,,,,,,,,,,,,,,,*,7N

0thers ,,,,,,,,,,,,,,,,,,,,,,1.*,4N

Ma'5etin1 Acti6itie


42/44

B'an( na#e$

1. Sinha Rotor Spinning Ltd.4. Sinha Spinning Ltd.

B4-e' o) P'o(4ct$

+/ Deni#$ @amim 2enim Ltd.

%aciEc 2enim Ltd.

Chittagong 2enim Ltd.

Royal 2enim Ltd.

Sinha 2enim Ltd.

;/ Te=ti!e$

Sinha yarn dyeing Ltd. Sinha knitting Ltd.

Adnan te'tile Ltd.

Asian dyeing Ltd.

2acca 2yeing Ltd.

Radiance group.

6ascot group.

ShiraGgon< Check

Re


43/44

TC%

@anes

&A%

Conc!4ion$

Technical education and its adoption in practical Eeld 9e in"ol"ed

ine'tricably. 3ithout the implementation o# the kno9ledge gathered in technicaleducation its success bound to suer. There#ore- this t9o months long industrial


44/44

as a partial #ulEllment o# our $.Sc. in te'tile engineering course helped usaccomplish the gap bet9een the theoretical and practical kno9ledge bypro"iding an elementary idea about industrial en"ironment processing machines-tools- eBuipment production system and maintenance- administration andmanagement system.

0ur selected SI=@A R0T0R S%I==I=& LI6IT?2 may be regarded as thepioneer o# modern spinning mill in our country. It 9as established a #e9 yearsago 9ith latest model o# ecient machinery. 3ithin a "ery short time it earnedname and #ame at home and abroad #or its Buality in production andadministrati"e #acilities. It is no9 not only pro"iding knitted yarn to the localmarket- but also e'porting them to #oreign countries at a stationary le"el. Itmainly uses online process control and its Buali#y control department helped usto achie"e a pro#ound kno9ledge about spinning mills production seBuencemaintenance- Buality control ! assurance as 9ell as its organiGation structure.

3e tried our best to gather all necessary in#ormation but it is true that9ithin this short period it is Buiet impossible to achie"e 1//N success as a 9holethis industry training 9as a satis#actory. 0nce again 9e should like to thank theauthority o# SI=@A R0T0R S%I==I=& LI6IT?2 as 9ell as honorable teachers #ortheir altruistic help and ad"ice.

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THE END

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