JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Overview

Course objectives: This lab course is designed to provide hands on experience on various foundry testing methods for evaluation of moulding sand properties, also designed to make the student to understand and demonstrate the various types of welding processes and its variables.

Course Outcomes

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

• 1. Determine moulding sand dry, hot and green strength
• 2. Understand the preparation of moulding sand
• 3. Determine moulding sand properties by varying additives
• 4. Understand the Melting of Al alloys
• 5. Gain hands on experience in various methods of welding and joining of metals and understand the mechanical behavior of the joint with respect to microstructure and mechanical properties.

LIST OF EXPERIMENTS:

• 1. Preparation of gating system using green sand moulding.
• 2. Study of permeability of green sand with clay and water.
• 3. Determination of sand properties: green and dry strength, green and dry hardness, hot shear strength with variation in sand additives.
• 4. Determination of clay content in sand.
• 5. Determination of the shatter index of green sand
• 6. Melting of Al alloys in a pit furnace and casting into light components
• 7. Preparation of a shell by shell moulding process
• 8. Study and observe the identification of flames using gas welding techniques and prepare a Butt joint with gas welding.
• 9. Preparation of a butt joint with mild steel plates using Arc welding process and study the comparison of the bead geometry with DCSP, DCRP and A.C.
• 10. Demonstration and practice of resistance spot welding process and plot the variation of spot area with time and current variation
• 11. Preparation of a butt joint with mild steel strip using tungsten inert gas (TIG) welding process.
• 12. Preparation of a butt joint with mild steel plate using submerged arc welding (SAW) process.
• 13. Preparation of a butt joint with mild steel plate using MIG welding process.
• 14. Evaluation of microstructure of welded joint and observe the structural difference in weld zone, heat affected zone (HAZ) and base metal LIST OF EQUIPMENT:
• 1. Mould Boxes, Patterns, Core Boxes, Tool Boxes. 2. Sieve Shaker 3. Permeability Apparatus. 4. Universal Sand testing Machine with Accessories. 5. Sand Hardness tester. 6. Clay Content Apparatus
• 7. Shatter Index test apparatus. 8. Pit Furnace/ Electric Furnace 9. Shell Moulding Machine 10. Centrifugal Casting Machine 11. Ultrasonic Tester. 12. Ladles, Crucibles and other Accessories. 13. Muffle Furnace 10000c 14. Centrifugal Casting Machine 15. Gas welding equipment. 16. Spot welding Machine 17. TIG Welding Machine 18. Arc welding Machine. 19. MIG welding Machine 20. Submerged Arc Welding machine R18 B.TECH MME III YEAR MM605PC: MODELING AND SIMULATION LAB FOR METALLURGICAL AND MATERIALS