The document summarizes the wire drawing process. Wire drawing is used to reduce the cross-sectional area of wire by pulling it through progressively smaller dies. There are single step and continuous wire drawing machines. Proper lubrication is important for smooth finishes and long die life. Different types of dies and materials are used depending on the type of wire. Automation using programmable logic controllers allows maintaining constant speed and drawing force for high accuracy and reduced labor costs.

1. Free Powerpoint Templates PRESENTATION ON WIRE DRAWING . BY AKASH SAMANTA 4 TH YR EE,GNIT.

2. 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.

3. 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.

4. 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

5. 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.

6. 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

7. CONCEPT OF DIE.

8. 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.

9. 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.

10. 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 .

11. IMPORTANCE OF PLC IN WIRE DRAWING 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

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