sukhwinder singh,11103317

INDUSTRIAL TRAINING REPORT

SUBMITTED BY:-Name :- SUKHWINDER SINGHRoll no.:- 11103317College :-UCOE,PUNJABI UNIVERSITY PATIALA

UNDER ABLE GUIDANCE OF:- A.K SANGHI (HEAD OF R&D) AND Mr. GOPAL KRISHNA (PROD. MANAGER)

PLANT INTRODUCTION

• FEDERAL MOGUL GOETZE (I) LIMITED, BAHADURGARH was set up in 1954 with the collaboration of M/S GOETZE WERKE, GERMANY, which started its production of Piston Rings for automobile industry in 1957. Considering the need of complete PISTON assembly ESCORTS LIMITED ventured into manufacturing of Pistons. In 1958 with the collaboration of M/S MAHLE GmbH, GERMANY, which delivered the Indian automobile industry its Piston in 1960. ESCORTS entered in collaboration with M/S SUKO GmbH, GERMANY, for Piston Pins in 1967 and manufacturing started in 1968.

• The plant manufacture over 3.4 million & 2.9 million Piston-Pins & Crank Pins annually .Around 50% of its production is being fitted by original equipment manufactureres of Automobile, Bi-wheelers, Tractors, Stationary Engines, Generator etc.

• Among its biggest customers are the MUL for which it manufactures pistons for Maruti-800, Esteem, Zen etc. Other customers include Peugot , Escorts Division-Faridabad, Bajaj, Vespa, Hindustan Motors , TVS and Many Others . The company also directly supplies products to all authorized dealers of the spare parts of all the above companies throughout INDIA.

BRIEF ABOUT ALL WORK STATIONS

EHS DEPARTMENT:- This department checks that the industry is working within the norms of pollution control board and that no part of the factory in anyway effecting the environment. The EHS department looks after the environment conservation by making the organization compatible to ISO 14001 which gives the requirements for environmental management systems, confirms its global relevance for organizations wishing to operate in an environmentally sustainable manner. For example in order to comply with the above mentioned, we have a total of 8 water testing points in our plant . It also looks after the safety aspect of all the employees by supplying them with latest PPE (Personal Protective Equipment ) and instruction for a safe working environment.

PURCHASE DEPARTMENT:- It purchases items from local market against purchase requisitions to meet day- to- day requirements in various departments. It has the following responsibilities:- Supplier Selection & Evaluation , Purchase of material , Development of existing suppliers including QMS(Quality Management System) development , Purchase of capital equipment process maps

TOOL ROOM:-This department is the heart of the industry. Broken parts of machines are getting repaired or made new in this department. To avoid undue delay in the repair of break down of machinery, new foundry tooling (dies) or jig and fixture are required to facilitate production are also manufactured in this tool room.

FINANCE DEPARTMENT:- Finance department maintains account books concerned with finance and disburses salary to workmen, junior staff and releases payment to outside parties. There is another department within this, which works out the costing data of products i.e. pistons, piston rings, pins and informs marketing for the finalization of product with the customers. Apart from this it has the responsibility of salaries, MIS Reporting , Balance Sheets, Statutory Audits, Income taxing, Accounts payable and Excise calculation.

BRIEF ABOUT ALL WORK STATIONS

PMS DOMESTIC:- It Comprises 16 Production Lines For Manufacturing Blanks .The Lines From 1to12 Can Be Distinguish Individually by the Size of Pistons and Machining Operations but these pistons referred as OE(Original Equipment) . Pistons Dispatches from line 14 to 16 to customers are referred as AE(After Market) .

EXPORT PISTON:- It comprises Cells rather than the Line as I already mention latterly about the another department .They manufactured Forged piston which is to be handed over a single employee in Cell.

FOUNDARY:- In Foundry Shop Blanks Of Pistons are To Be Casted by Gravity Die Casting Process .Despite ,They have Internal Lab Facilities For Assuring the Composition Of Alloy . Furthermore, they also have Heat Treatment Facilities which relieve internal defects of alloy and improve its strength.

LVD:- This department have new technology which is to handed over the quality of the pistons .They also have internal lab facilities which assist to precisely maintain the dimensional accuracy and quality of the job.

R&D:- Application Engineering department performs function of research & developments of components and tooling/fixture for the plant .It is divided into three main sections based on different components :

1. Piston Designing 2. Ring designing 3. Tooling Designing

PISTON MANUFACTURING PROCESS (STANDARD)

REQUEST FOR DESIGN

SERVICES(RDS)LEVEL 1 PISTON CALCULATIONS

CASTING MODEL MACHINING

MODEL

DESIGN

REVIEW

FEA ANALYSIS

MANUFACTURE PARTSDFMEA

DRAWING

PISTON MANUFACTURING PROCESS (RING CARRIER)

Blanks from

Foundary

Plunge cutting/Ring

Forming , Bottom

Thickness & Rough

Overturning

Fixture Seat

MachiningRough Crown

Facing

Rough Overturning

(Under Design Limits)

Pre Pin Hole boring

Oil Hole Drilling

Ring Carrier

GroovingFinish Outer Dia.

Finishing Of Pin Hole

Cavity Formin

g

Circlip Grooving &

Pin Hole Chamfering

Aluminium Grooving

Rolling & Cleaning

Phosphating & Moly Coating

SIMULTAENOUSLY LOADED

PROCESS FLOW LINE TRACK

PMS DOMESTIC (LINE-2 BLOCK DIAGRAM)

BLANKS FROM

FOUNDARY

BLANKS FROM

FOUNDARY

PMT M/C(PLUNGE CUT)

LM-491 M/C(PLUNGE CUT)

PMT M/C(ROUGH

BOTTOM/CROWN FACE)

PMT M/C(KD/FIXTURE SEAT

M/cing )

M8-R M/C(ROUGH OD UNDER CONTROL LIMITS)

WB-2 M/C(PREBORING)

STANDARD TOOL USEDTEGN,CNMX,TPGN,TNMA

FIXTUREGUIDE SLEEVE , DRIVING PIECE , HOLLOW CENTER

TOOL USED CARBIDE BIT BRAZED ON SHANK,TPGN

FIXTUREHOLDING JAWS & DRIVING PIECE

MEASUREMENT GAUGES

BLANKS

TOOL USEDTCGT , CNMW

FIXTUREHOLDING JAWS & DRIVING PIECE

TOOL USEDCARBIDE TIPPED DRILL(RCMT),HSS DRILL,WD-4/416a

FIXTUREROUGH BORING FIXTURE,DRIVING PIECE

FIXTUREFLOATING TYPE DRIVING PIECE ,ROUGH BORING FIXTURE

TOOL USEDPCD






LM-496(ALUMINIUM GROOVING)

ACE-FANUC SIRIEN(ALUMINIUM GROOVING)

OIL HOLE DRILLING M/CMEASUREMENT

GAUGES

TOOL USEDCT-2/984 ,985 ,986CNMX (OT)PCD ALL

TOOL USEDPCD

FIXTUREDRIVING PIECE & FINISH TURNING

NEX-110 M/C(RING CARRIER GROOVING & CHAMFERING)

SIEMENS JYOTI M/C(RING CARRIER GROOVING

& CHAMFERING)TOOL USEDPCD ,CARBIDE TIP CHAMFER TOOL

MEASUREMENT GAUGES ROLLER CARRIER

TAKISAWA M/C(FINISH OD & PROFILE

MAINTAINING)

TAKISAWA M/C(FINISH OD & PROFILE

MAINTAINING)

TOOL USED PCD & DIAMOND CT-4/891 ,909 ,893 CCGT-INSERTCCGT USED FOR TOP PORTIN FINISHING AND PROFILE MAITAINING

FIXTUREFINISH TURINING & FIXTURE ASSY





ZA-4 M/C(POST BORING &

FINISHING)

ZA-4 M/C(POST BORING &

FINISHING)

ROLLER CARRIER

FEMCO F-CAVITY M/C(ECCENTRIC CAVITY

FORMING)

SE-2(CIRCLIP GROOVING &

PIN HOLE OUTER CHAMFERING)

LB-1(FINISHING OF PIN HOLE BY ROLLER

MANDREL)

ACE A-CAVITY M/C(ECCENTRIC CAVITY

FORMING)

MACHINED STOCK IN TRAYS

MEASUREMENT GAUGES

TOOL USED PCD & DIAMOND CT-4/699 ,CT-3/1102 FIXTURE

BORING MANDREL V-BLOCK

TOOL USED PCD ,CT-3/1130 PCD & CARBIDE BIT RDMW

FIXTUREECCENTRIC CAVITY TURNING

TOOL USED:-CARBIDE CT-3/891(ROUND WIRE) CT-3/892(FLAT SURFACE) CT-3/1082(TRAPEZ SURFACE)

TOOL USED JORNAL-1,GEN-4/461 ROLLER-6/5,GEN-4/439

It represents the upgraded machine which causes bottle neck error and now it was upgraded with new technology

NEX-110,FANUC (ALFIN GROOVING M/C)

It is bring into your notice that this machine is used for ALFIN grooving (Ring Groove Formation) .For this operations of profile generation we are using KEYSTONE GROOVE with different profile as on the basis of required groove profile .

Solution after Trials:-Recently, we have achieved our target in optimizing the cycle time from 68-69sec/job to 45-47sec/ job unit.

NEX-110,FANUC (ALFIN GROOVING M/C)

MACHINE LOCK

SKIP BUTTON

TOOL GROUP

RESET BUTTON

AUTO DOORClose/Open

ALARAM RESET

Screen Panel

INDEX START TAIL SPINDLEReverse/Forward

EMERGENCY STOP

NC FUNCTIONS SINGLE BLOCK,OPTIONAL BLOCK SKIP,OPTIONAL STOP ,PROGRAM CHECK

RAPID OVERRIDE

CHIP CONVEYORAUTO,FORWARD.STOP,REVERSE

PARTS CATCHEROUT/IN

COOLANTON/OFF

SPINDLEOVERRIDE,NEUTRAL,LOW,HIGH

S

PIND

LE

JOG,F

ORWAR

D,ST

OP,REV

ERSE

Handle Select

Feed Axis Select

CYCLE START

CYCLE STOP

NEX-110,FANUC KEYSTONE GROOVE

As on the basis customer requirements we are using different kinds of KEY STONE GROOVE which assists in improving the quality of product and its running circumstances . Following three KEY STONE GROOVE are used for ALFIN Grooving .

(a)

(b)

(c)

Full Key Stone

Half Key Stone

Key Stone

CARBIDE

CARBIDE

CARBIDE

Tool Cost = Rs360/piece (approx.) Holder Cost = Rs 1000 (approx.) Tool life = 500/job unit

METHODOLOGY USED IN ALFIN GROOVING

ALFIN GROOVING (Plunging Method):- Full Key Stone/Half key Stone/Simple is used for ALFIN Grooving .By this method rough cut is drawn by keystone before profile formation and easily cut the unwanted amount of material as on the basis of design.

PIN HOLE

PISTON LOADED ON M/C

Forward stroke of full key stone is Cutting Stroke & Backward is Idle Stroke . Mostly ,CARBIDE Tool is used for PLUNGING METHOD .

HOLDING FIXTURE

FULL KEY STONE (CARBIDE)

TAILSTOCK CENTERING

NEEDLE

METHODOLOGY USED IN KEYSTONE GENERATION METHOD

KEYSTONE GENERATIVE METHOD :- In this method Half KEYSTONE Groove for straight cut and CBN is used for making the ALFIN Profile finish and cut in under control limits .This task of profile generation is done through programming which assist tool and easily follow the track.

PERIPHERY OF PISTON

• Cutting Tool takes two steps to cut groove profile CI Ring Carrier piston (a) Move Forward start and proceed into with a cutting stroke from start point upto End Point .After all then with completion stroke cutting tool moves idle in backward way. (b) Another step used to make for inclined flank by providing required path through programing for the movement of cutting tool.

GENERATIVE TOOL (CBN)

ALFIN GROOVE PROFILE OF

PISTON

END POINT

START POINT

RESEARCH WORK AND TASK CONCEPTUALISATION Project Work:- Technology Up-gradation of Line-2 . Why It Is Needed :- As this is for your awareness that Line-2 is an old Production Line but

supplying OE (Original Equipment) parts to customers like Sonalika , Eicher , Tata , Cummins etc. Quality maintenance is an indispensable part of organization to uplift the expectations of customers by providing assurance . It improves the quality and productivity of product which attains a benchmark to the competitors inside the market .

Quality Lag :- Blow by issue during engine working which reduces the horse power and life of piston .

Causes of high blow by :-(a) Poor groove roughness . (b) Burrs present at the Groove Flank . (c) Poor Tool life on Grooving operation . So , It is to be bring into your notice that 1st and last points are interlinked . Action Taken :- Groove Burrs problem can be solved by changing the layout and processes

of Line-2 .

STRATEGICAL TRIALS ON KEYSTONE GENERATION METHOD

PROJECT TASK FOR IMPROVING THE ROUGNESS OF C.I GROOVE PISTON TYPE:- EICHER TCI Cutting Tool Used :-CARBIDE TRAPEZ TOOL For Rough cut whose RPM = 450 , FEED =

0.03MM and CBN Tool For Finish cut whose RPM = 1200 , FEED = 0.04 MM . RESULT :- Angular profile of groove flank not straight . ACTION TAKEN :- (a) Tool adjusted to correct angle but same result . (b) Tool checked and found o.k. (c) Tool holder to be changed . Trial 1 :- Groove tool cleaned & remounted , Groove tool change . NO IMPROVEMENT Trial 2 :- Clamping Pressure reduced from 9 kg/cm2 to 7 kg/cm2 . 10%

IMPREVEMENT Trial 3 :- RPM = 1500 , FEED = 0.05 ,Clamping Pressure = 7kg/cm2 . 15%

IMROVEMENT Trial 4 :-RPM = 600 , FEED = 0.03 MM ,Clamping Pressure = 7 kg/cm2 . 30%

IMPROVEMENT


Conclusion of the Day :- (a). Geometrical parameter to be restored first , M/c checked for alignment & found 25 micron out , alignment correct on 6/2/2014 . (b).Centre drilling on KD2F operation was observed 0.2 mm out ,M/c handed over to maintenance department & needle bearing changed . After maintenance at KD2F , center concentric was still upto 70-80 microns . Piston made on C.I grooving with 70 micron center concentricity . After then center

concentricity was correct groove geometry & groove straightness is upto 1.3 micron . IMPROVEMENT OBSERVED Trial 5 :- 20 pistons made after correcting KD2F Center concentricity upto 70 micron . All FOUND O.K. The Batch of 50 pistons made and then dispatch to Ultrasonic Bond testing M/c , 3 pistons

were rejected from overall batch . But later M/c was reset by the mechanic and after all then these 3 pistons were found O.K.

Machine was allowed to run for further 100 pistons to validate the results .But Tool got Break till 38 piston because eye piece opened .

Reason :- Spindle orientation and fixture clamping was at M8F type .


Tool holder needs to be adjusted for reverse spindle orientation and Rough carbide tool have to be reversed for making Trapez Form .

From Batch of 50 pistons two were taken with mark of 1 & 50 and then Dispatch to LVD-Metrology Lab (for C.I Groove Angle Inspection) .

Both were accepted as on the basis of report decision (Roughness, waviness , Groove angle) Trial 1 :- After changing the Carbide Tool a sample is to be made and inspected in Quality

Assurance Department (Roughness , Waviness) and later dispatch to LVD-Metrology Lab(Groove Angle) .NO IMPROVEMENT

Trial 2 :- Outer diameter of Ring carrier not adjusted so it went to scrap. Trial 3 :- Another sample drawn out for inspection ,then dispatch to quality assurance

department for upper/lower flank inspection (Groove angle , Roughness , Waviness) . NO IMPROVEMENT Results :- Tool change with Latter one which was used before accident .


Recently we have changed the techniques of groove generation method with the current one which comprises of groove tool .

Trial 1:- For Rough cut RPM =600 , FEED =0.04 and for Finish cut RPM =1100 , FEED=0.05

Pressure =7kg/cm2 ,Machining time = 43sec . Result :- Some straightness issue observed .

AFTER ROUGH FINISH

(a) (b)

PROCESS IMPROVEMENT

• Generation Method for Alfin Groove Machining.

Old Machining Method:-Traditionally , Key stone groove was being

machined by Plunging Method with carbide Tools in Patiala Plant. Cycle Time was high and Tool life was as low as 250 pistons.

Solution Provided:-Generation Method was introduced to produce

key stone groove with CBN groove tools. Cycle time reduced from 62 seconds to 41 seconds with increased tool life up to 2000(CBN).

CUSTOMER SATISFACTION

• Prevention of Burr on ALFIN Groove Flanks.

Area : PMS-Domestic.

Problem Description:-Customer Concern regarding High Blow By in TCI

piston type from M/S Eicher in Oct.13. Hard Burr observed on the insides edges of Alfin groove flanks over chamfer portion. Burr was up to 20 – 25 microns.

Solution Provided:Tool path on Takisawa machine was altered as described in the picture to minimize groove burr. After the improved tool path, Burr reduced to less than 3 Microns.

COMBUSTION BOWL MACHINING BY PLUNGING

• This is traditional method used for carburetion bowl generation but now its use is obsolete


As this machining is to be done in small steps which should clear you inside the figure . The Form cuts the bowl profile and generate straight profile . Mostly there were 8-9 steps for this operation which was helpful for carrying most of load ,vibration during machining and avoid Tool breakage

Problem Description:- Main reason for high cycle time was Carbide Rough

Tool which needs to be operate at low RPM and less Tool Life. Its creates bottle Neck which makes effects on the rate of production.

CARBIDE (FORM TOOL)

Tool Cost =Rs3000/piece

COMBUSTION BOWL MACHINING BY GENERATION

• Generation method is introduced in Finish Cavity operation thus elimination of carbide form tools with reduced cycle time.


Problem Description:-Finish Cavity Machine was the Bottle neck machine in

Line 2 (Ring Carrier) with Machining Time of 67sec. Main reason for high cycle time was Carbide Rough Tool which needs to be operate at low RPM and less Tool Life.

Solution Provided:-Single PCD tool provided for both Rough and Finish

cuts to produce bowl thus enabling high speed machining and increased Tool Life. Machining Time reduce to 42 sec.

RDMW

Tool Cost = Rs5000 (approx.)Holder Cost = Rs5500 (approx.)

SPL,SRGCA-2525

TECHNOLOGY UPGRADATION ON PMT & LM-491 M/C PMT M/C :- TNMA Tool replaced with TPGN . This Upgradation of technology is to bring into

the notice that TNMA tool has six cutting edges used for machining the job .But with the passage of time, wear and tear per edge causes remounting the insert during each time of loading and unloading. This kind of bottle neck & ergonomics factor is rectified by altering the cutting tool technology with the current one. Therefore we have proposed TPGN tool (PCD tool) having single cutting edge but 4 to 6 times more life than TNMA tool.

ADVANTAGES:- M/C setup time reduced . Tool life increased . Cost per piece reduced . Cycle time reduced by 5 sec . Electricity saved upto certain units.

BEFORE AFTER

PCD FOR ROUGH TURNING ON PLUNGE CUT M/C

Twin Carbide Inserts used for Turning. Life = 500/Edge.

New PCD Insert (TPGN) Life =20000

BEFORE AFTERCarbide inserts were being used for rough turning on Plunge cut operation with life of 500/edge only. 2 inserts were used for turning the piston.

New PCD insert installed for rough turning operation with tool life up to 20000 thus reduced cost/piston and reduced Tool change loss. Cycle time is also improved by 5 sec. with further scope of improvement.

TECHNOLOGY UPGRADATION(PMS DOMESTIC, LINE-2)

PMT M/C (ROUGH CROWN FACE) :- In this latterly we were uses Carbide bit brazed on shank part but now its use obsolete

because we would like to exchange this insert with the TPGN tool (PCD) which have more life than the carbide insert .

ADVANTAGES:- Lapping is not required after 500 pistons . Tool life extended up to 15000 pistons Cycle time reduced by 4-5 sec

BEFORE AFTER

PCD TOOL FOR ROUGH FACING OPERATONS

Old Carbide Form Tool Life =500

New PCD Insert (TPGN) Life =20000

Traditional Carbide form tool for rough facing costs around 5000Rs. And requires regrinding after every 500 parts thus more tool change loss and cost/part. Secondly plunging of form tool causes lot of vibrations in the machine thus frequent spindle repair.

New PCD insert costs 2200 Rs. And tool life is 20000 thus reduced tool change and cost/part. No vibrations at all during operation thus improved machine spindle life. Cycle time is reduced by 5 sec with further scope of improvement.

BEFORE AFTER

RESEARCH WORK AND TASK CONCEPTUALISATION Recently, we were replaces triangular insert with pentagonal which was costlier and less life

than the Pentagonal insert . Before the commencement of research work we were uses the new CBN Tool and Pentagonal insert for further improvement in process work .

Pentagonal Insert (CARBIDE)

CBN

We drawn out three scrap pistons for setting of machine as per in accordance with changes and we were found following results:

a) Piston 1 :- After machining with current setting dimensional error occurs after calibration on gauges .STEP DIA ,GROOVISH & ALFIN Internal Diameter were not under design limits .

b) Piston 2 :- Besides ,dimensional error try to remedied by altering the coordinate system with small changes but during calibration it causes error at internal diameter of ALFIN Groove .

c) Piston 3 :- Furthermore ,with small altercation inside cutting position of tool we were calibrate it but GROOVISH not in our design limits .

Last piston dispatched to LVD for precise inspection of Groove Angle

and found to be 7°26‘14“ but company requirements b/w 7°10‘ to 7°40‘. So, it was found o.k.

ROUGH CUT

RPM = 350Feed =0.050mm

FINISH CUT

RPM = 1280Feed =0.035mm

Pressure = 7Kg/cm²Straightness =3.71Ra = 0.55µ

Cost =Rs2800

RESEARCH WORK AND TASK CONCEPTUALISATION Keeping RPM & FEED Rate same Altering pressure to 10Kg/cm² and another piston drawn out

for sample inspection . This was dispatched to FMR for ROUGHNESS which seems to be 0.55µ and for STRAIGHTNESS inspected inside LVD which was found to be 2.3µ .

Next day two sample were drawn out for angle inspection and dispatched to FMR .

Conclusion:- Improvement not observed .

S.No.

Obs . Drop Obs .Angle Obs . Drop Obs .Angle

1. 134.90µ 7°45‘10" 12.83µ 0°10‘47"

2. 133.04µ 7°38‘43" 5.57µ 0°9‘34"

Upper Flank Lower Flank

Groove Taper Report

RESEARCH WORK AND TASK CONCEPTUALISATION Another competitor piston of USHA brand manufacturers was taken out for precise inspection

of Angle , Straightness , Waviness. We were calibrating it by Vernier caliper because there was no fixture for this 92.06 mm Fixture seat Diameter and we found as shown below :ANGLE :-

STRAIGHTNES :-

RESEARCH WORK AND TASK CONCEPTUALISATION

WAVINESS :-

After then position error rectify by analyzing during production which was hit directly to the job, when move from its rest position to cutting position .This position was altered by altering the position of the cutting tool otherwise tool breakage occurs .


S.No. Ra (µ) Lower Flank (µ)

Upper Flank (µ)

Angle ALFIN Dia Variation(mm)

ALFIN Width variation (mm)

1.(Piston1) 0.55 +5 260 7°26' -0.10 -0.10

2.(Piston 25)

0.45 +5 260/390 7°27' -0.10 -0.10

3.(Piston 35)

0.33 +5 394 7°28' -0.10 ±0

4.(Piston 45)

0.36 +5 393 7°28' -0.10 ±0

5.(Piston 70)

0.34 +4 393 7°28' -0.10 -0.14

6(Piston 100)

0.35 +5/+4 393 7°29' -0.16 +0.07

7.(Piton 112)

0.36 +5 395 7°28' -0.12 +0.08

Product Type :-EICHER TCIMachine Name:-NEX-110-104401929Cycle time :- 56sec


At Piston 121 there was error occurs in its straightness and generation stop at 145 but at Piston 140 Straightness observed as shown below on report basis :

Conclusion :- Generation stop for some improvisation and further improvement in its process work .

TECHNOLOGY UPGRADATION ON PMT (LVD-4 SHOP) PMT M/C :-

ADVANTAGES:- Tool life increased . Cost per piece reduced . Cycle time reduced by 5 sec . M/c setup reduced .

SID

E V

IEW

FRO

NT

VIE

W

TOP

VIE

W

As this is bring into your notice that the operation which was used latterly is an old processes and recently it was upgraded with new technology .TPGN tool changed with TNMA which has more life than the latterly used tool and also with use of this tool cycle time reduces from 1min2sec to 42 sec .

TPGN INSERT

Tool Life= Rs3300/pieceHolder Cost= Rs5600/-

TASK CONCEPTUALISATION MANFACTURED PRODUCTS (PMS DOMESTIC, LINE-2)

1. EICHER2. SONALIKA3. FARMTR4. TATA SEIMENS

Time For Some Interaction.

Quality is an endless journey

Thank You

sukhwinder singh,11103317

Documents