Wire drawing ppt

wire drawing machine,fully automated

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PRESENTATION ON
WIRE DRAWING .
BY
AKASH
SAMANTA
4
TH
YR
EE,GNIT.

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CONTENTS.
•1.INTRODUCTION.
•2.PROCESS.
•3.TYPES OF MACHINE.
•4.LUBRICATION.
•5.DRAWING DIES.
•6.EQUIPMENT & TOOLS.
•7.GENERAL FEAUTURES.
•6.IMPORTANTS OF PLC.
•7.CONCLUSION.

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INTRODUCTION.
•1.WIRE DRAWING IS A METAL WORKING
PROCESS USED TO REDUCE THE
CROSS SECTION AREA OF WIRE.
•2.THE PRODUCT MAY BE ELECTRICAL
WIRING, CABLES,TENTION-LOADED
STRUCTURE COMPONENTS ETC.

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Drawing Process.
•1.PROCESS IS QUIT SIMPLE IN CONCEPT.
•2.AT FIRST WIRE IS SHRINKING .THE BEGING OF IT BY HAMERING
FILING,ROLLING OR SWAGING THAT IT WILL FIT THROUGH THE DIA.
•3.THEN IT IS PULLED THROUGH THE DIA.
•4.IT REQUIRE MORE THANE ONE STEP TO PRODUCE ONE TYPE
•5.In this process the cross section of wire is reduced by pulling it
through a die.
•6.Die angle has great influence on the drawing force and the quality of
the drawn product
7.Drawing FORCE :
F = Y
avg
Af In (Ao/Af) ; Y
avg
– average true stress of the
material in the die gap

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TYPES OF WIRE DRAWING
MACHINE
THERE ARE VARIOUS TYPE OF WIRE DRAWING MACHINE
BUT THE BASIC TYPES ARE -
1.SINGE STEP
2.CONTINUOUS WIRE DRAWING.
1.SINGE STEP MACHINE. 2.CONTINUOUS WIRE
DRAWING MACHINE.

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LUBRICATION DURING WIRE DRAWING
PRORER LUBRICATION IN THE
DWARING PROCESS IS VERY
NECESSARY FOR SMOOTH SURFACE
FINISH AND LONG DIA LIFE.
TYPES OF LUBRICATION---
1.WET DRAWING.
2.DRY DRAWING.
3.METAL COATING.
4.ULTRASONIC VIBRATION.
TYPES OF LUBRICATS-
1.OIL.
2.CUPPER SULFATE SOLUTION
ETC

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CONCEPT OF DIE.

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DIE MATERIALS.
•1.TUNGSTEN CARBIDE: Lowest cost,shock
resistance,large sizes available,lower life epectancy.USED-for
steel wire drawing.
•2.NATURAL DIAMONDS: Wear resistance,gives
excellent wire surface,high thermal conductivity,longer life
expectancy,limited availability in required high quality &quantity.
•3.SYNTHETIC SINGLE CRYSTAL: Consistently
uniform material,gives excelent wire surface,high thermal
conductivity,larger size ranges are still costly at this time.
•4.POLY CRYSTALLINE DIAMOND: Excels in life
expectancy,wear resistance of diamond,shock resistance of
carbide,high availability,cost effectiveness,high drawing
force,smaller fines requires more filtration,may be damaged by
temp.above 700c,wire surface condition less than from natural
dimond.

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Equipment and tools.
1.POINTERS:Pointers as the name implies
is used to put a taper (or point on the start
end of the wire so that it can be threaded
through the die.
2.PULL IN DOGS: Pull in dogs are used to
grip the wire end as it comes through the
die and once the dog is fastend to the block
the wire can be pulled through the die and
will then wrap round the block.
3. BUTT WELDERS:Butt welders Are used
to join wire ends. BUTT WELDERS . .


PULL IN DOGS. POINTERS.

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GENERAL FEAUTURES.
•1.DRAWING BLOCKS.
•2.MAIN BLOCK FRAME.
•3.TRANSMISSION.
•4.MAIN MOTORS.
•5.SENSOR ARMS.
•6.DIEBOXES.
•7.SAFETY GUARDS.
•8.WATER COOLING &
• VENTILATION.
•9.ELECTRICAL
•EQUIPMENT.

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I MPORTANCE OF PLC I N WI RE DRAWI NG
WORKS.
1.PROVIDE CONSTANT SPPED
OF MOTOR.
2.MAINTAIN CONSTANT
DRAWING FORCE.
(IMPORTANT)
3.WE CAN GET VARIOUS AWG
WIRE FROM A SAME MACHINE
BY CHANGING THE
PROGRAMME OF PLC.
4.VERY HIGH ACCURACY.
5,SAVING IN LABOUR COST.
AND MANY MORE

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CONCLUSION.
Drawing provide ways to formDrawing provide ways to form
shapes with uniform crossshapes with uniform cross
sections at high production rates.sections at high production rates.

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