Plastic mold & Die design(Department Elective - II) — Summer 2021

Explain application of ferrous & non-ferrous materials in mould making.

What is the selection criteria of Mold materials?

Explain different heat treatment processes used for hardening of core and cavity of injection moulds.

What is the principle involved in EDM process?

Differentiate between Two Plate & Three Plate Mold designs of Injection mould.

Write short notes on a) Shaping b) Electro-forming c) Honing techniques.

Explain principle, construction and operation of Lathe & Milling Machine with neat sketches

Write short notes on runner less mold.

Explain each components of Feed system of injection mould.

List out types of Split Mould Actuation methods. Explain any two with neat sketches.

What do you mean by runner balancing?

What is ejection system in a mould? Explain Valve ejection system.

List out the types of Gate. Explain any four with neat sketches.

Explain how runner size is calculated.

Explain the design procedure of Extrusion Die.

Discuss the requirements of Mould Temperature Control system. Explain with neat sketch any two cooling system for core.

Write short notes on Air Ejection System.

List out the parts of Extrusion Die with neat sketches.

Explain design of flash type compression mould with neat sketch and example.

Write short notes on guide pins and guide bushes.

Explain CNC Technology in mould manufacturing and its application.

Differentiate between compression and transfer mould design.

Write short notes on spark erosion.

Write the Rheological considerations for design of extrusion dies.

Explain the plunger transfer type Mould.