ASSIGNMENT 1&2 METAL CASTING PROCESSES Theory · ASSIGNMENT – 1&2 METAL CASTING PROCESSES Theory 1. Give broad classification of manufacturing processes. 2. Define pattern.

Manufacturing processes – II (2141908)

B.E. Semester – IV Department of Mechanical Engineering Darshan Institute of Engineering and Technology, Rajkot 1

ASSIGNMENT – 1&2 METAL CASTING PROCESSES Theory

1. Give broad classification of manufacturing processes.

2. Define pattern. List different type of pattern and explain with neat sketch.

3. Define pattern allowance. List various pattern allowance & state purpose of each

allowance.

4. List out material commonly used for pattern & explain wood and metal material

with advantages and disadvantages.

5. List essential property of moulding sand. State effect of each property on Casting.

6. State ingredients of moulding sand and explain the method used for determining the

Permeability of moulding sand.

7. What is core and core print & what is its purpose. Explain types of core with neat

sketch.

8. Explain shell moulding with neat sketch.

9. What is gating system? What is its function? State types of gate with its advantage

and disadvantage.

10. Sketch cross section of sand mould which is ready for pouring.

Examples 1. Calculate the optimum pouring time for a casting which mass of 20 kg and having an

average section thickness of 15 mm. The material of the casting are grey cast iron

and steel assume k=0.7

2. Calculate the pouring time for a 500 x 250 x 125 mm casting using 25 x 25 mm in

gate and a constant head of 125 mm Neglect orifice and frictional effect.

3. Design most economical riser for a casting having dimension 125 x250 x50 mm



ASSIGNMENT – 3 METAL JOINING PROCESSES

Theory

1. Classify metal joining processes. Explain principle of gas welding process with

neat sketch and write its advantages and disadvantages.

2. Explain TIG and MIG arc welding. Give application of each.

3. Write short note on Electron beam welding and state its application.

4. Explain the principle of resistant welding and explain seam welding process with

neat sketch. Give its application.

5. Explain various flames produced in an Oxy-acetylene gas welding.

6. What is the working principle of brazing and soldering?

7. What is the role of electrode coatings in shielded metal arc?

8. Explain the factors involved in electrode selection in arc welding processes



ASSIGNMENT – 4&5 METAL SHAPING AND FORMING

Theory

1. State the principle of centrifugal casting and explain its working with neat

sketch. Give its advantages.

2. Classify the type of foundry furnace. Explain cupola furnace with neat sketch

showing Temperature zone and important reactions that are taking place in it.

3. Discuss in brief the working of electric furnace.

4. Describe casting defect stating their cause and remedies.

5. List factor which affect salvaging of casting. Also its various salvage techniques of

Casting and explain any one.

6. Describe wire and tube drawing.



ASSIGNMENT – 5 PLASTIC, CERAMIC AND GLASS PROCESSING

Theory

1. Classify the types of plastics along with the general properties of plastics.

2. Explain Injection moulding process stating its principle of operation, different

aspects, advantages, limitation and applications.

3. Explain (i) Difference between thermoplastic and thermosetting. (ii) Process of

polymerization.

4. With the help of neat sketches explain principle of operation for different types of

compression moulding and their applications. Also explain transfer moulding

process and its applications.

5. Explain ceramic structure giving example of Silicate ceramics in detail and also give

its application

6. Explain glass forming processes in detail.

ASSIGNMENT 1&2 METAL CASTING PROCESSES Theory · ASSIGNMENT – 1&2 METAL CASTING PROCESSES Theory 1. Give broad classification of manufacturing processes. 2. Define pattern.

Documents