Drawing,Wire Drawing &Tube drawing and Its Applications by polayya chintada

Drawing,Wire Drawing &Tube drawing and Its Applications

1. P roduction Technology: Rolling,Extrusion,wire drawing& tube Drawing COURSE CODE: C211 REGULATION: R19 2 nd BTECH 2 nd SEM PREPARED BY : POLAYYA CHINTADA M.TECH,M.B.A,(PhD) ASSISTANT PROFESSOR LENDI INSTITUTE OF ENGINEERING AND TECHNOLOGY

2. 2 PRODUCTION TECHNOLOGY SYLLABUS UNIT 2: Metal Forming: Introduction, nature of plastic deformation, hot and cold working of metals, mechanics of metal forming; Rolling: Principle, types of rolling mill and products, roll passes, forces in rolling and power requirements; Extrusion: Basic extrusion process and its characteristics, hot extrusion and cold extrusion, wire drawing, tube drawing Nature of plastic deformation, cold and hot working process, working of a rolling mill and types, extrusion processes. COURSE OBJECTIVE: COURSE OUTCOMES: APPLICATIONS: piping and tubes, body panels, construction materials, electrical motors, doors, production of tubes and hollow pipes, frames, doors and windows Compare cold working and hot working processes. (L4) ● Explain the working of rolling mills. (L2) ● Evaluate the forces and power in rolling and extrusion processes. (L5)

3. Drawing This will plastically deform the work piece by decreasing its cross section area and increases its length. Drawing is a  metal forming process  used to reduce cross section and increase length of work piece. This process associated with tensile force which distinguishes it from other metal forming processes like  extrusion ,  forging  etc. In this process a large cross section work piece is forced to pass through a die which has smaller opening comparing cross section area of work piece. This process is used for making wires, rods, tubes etc.

4. Drawing processes Wire Drawing deep Drawing: Tube Drawing:

5. Wire Drawing Mostly die are made by chilled cast iron, tungsten carbide, diamond or other tool material. A wire is a circular, small diameter flexible rod. Wire drawing is an  cold working  process. It is an operation to produce wire of various sizes within certain specific tolerances. This process involves reducing diameter of thick wire by passing it through a series of wire drawing dies with successive die having smaller diameter than the preceding one The maximum reduction in area of wire is less than 45% in one pass.

6. Wire Drawing materials

7. Tube Drawing Tube drawing is also similar to other two processes except it uses a mandrel to reduce wall thickness and cross section diameter of a tube. This mandrel placed with die and the work piece is pulled by a carriage system as describe in rod drawing. The tube is either circular or rectangular. It also required more than one pass to complete drawing operation.

8. Tube drawing applications It is used to produce large length of small cross section.   This process is used for making wire of copper, aluminum etc. which are used in electrical industries. Paper clip,  helical spring  etc. are wire drawing product Small diameter rods and tubes are drawing product.

9. Wire drawing Vs. rod drawing

10. Tube drawing classification

11. Tube drawing without mandrel

12. Tube drawing with fixed mandrel

13. Tube drawing with floating mandrel

14. Tube drawing with moving mandrel

15. Y ours : POLAYYA CHINTADA M.TECH,M.B.A,(PhD) ASSISTANT PROFESSOR https://www.youtube.com/watch?v=cFkks4LdXGc https://www.youtube.com/watch?v=nxvm3klR3fI