MOULD AND DIE DESIGN Question Paper

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Anna University B.Tech Polymer Science And Rubber Technology Question Paper

B.E./B.Tech. DEGREE EXAMINATION,APRIL/MAY 2010

FIFTH SEMESTER Polymer Technology

PM 605 MOULD AND DIE DESIGN

Time: 3hrs Max Marks: 100

Answer ALL Questions

PART – A (10 x 2 = 20 marks)

1. Name the different types of gates used in the injection mould.

2. What are the different types of nozzles used in the injection mould?

3. What are the advantages of transfer molding?

4. Name the different types of compression mould available to process thermosetting

resins?

5. List the advantages of a toggle clamp.

6. What is called runnerless molding? Mention its advantages.

7. How are pipes and tubes made using in-line extrusion?

8. What is the role of sprues in the molding process?

9. List the functions of landed positive mould.

10. Name the dies used for coating wire and cables.

PART – B (5 x 16 = 80 marks)

Question 11 is compulsory

11. Describe the main sections and their functions of injection moulding machine. (16)

12.a) Discuss the advantages of reciprocating screw injection moulding machine over the plunger machine.

(OR)

b) Describe the components and functions of single screw extruder.

13.a) Discuss the functions of different components of compression moulding machine.

(OR)

b) Explain the functions and applications of different types of mould used in compression moulding.

14.a) Discuss the design features of transfer moulding.

(OR)

b) Describe the functions of pot transfer and plunger moulding.

15.a) Discuss the factors taken into consideration while designing parison.

(OR)

b) Describe the design features of barrel of an extruding machine.