JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course objectives: This lab course is designed to know the various testing methods for evaluation of metal forming techniques

Course outcomes: Upon successful completion of this course, the student will be able to

• 1. Determine strain hardening exponent from the stress-strain diagram.
• 2. Understand the difference between simple, progressive and compound dies.
• 3. Understand the effect of cold working and annealing on microstructure.
• 4. Illustrate the effect of friction and semi die –angle on metal flow in extrusion.
• 5. Practice various deformation processes like extrusion, deep drawing and redrawing.

LIST OF EXPERIMENTS:

• 1. To determine the formability of given materials by Erichson cup test
• 2. To manufacture washer components using fly press (progressive dies /compound dies)
• 3. Deep drawing of a cup with / without blank holder by hydraulic press
• 4. Redrawing of a cup with / without blank holder by hydraulic press
• 5. To determine the friction factor by ring compression test
• 6. Determination of strain hardening exponent ‘n’ and strength coefficient ‘k’
• 7. To verify Hall-Petch relation in MS specimen.
• 8. To determine the effects of cold working on the microstructure and mechanical properties of given metal.
• 9. To demonstrate the effect of friction and height-to-diameter ratio in the axi-symmetric compression of a cylinder.
• 10. To analyze the load and metal flow in extrusion with different friction conditions and semi-die angles. List of Equipment:
• 1. UTM, 2. Hydraulic press, 3. Fly press, 4. Erichson cup Tester R18 B.TECH MME III YEAR