Plastic Mould and Die design — Summer 2023

Explain the selection criteria of materials for mould and dies.

Which are the methods used for fabrication of mold? Explain any one.

Explain material selection for cavity, core, back plates, Inserts, guide pins, guide bushes and ejector elements.

Give the detail classification of different types of heat treatment processes carried out on metal.

Explain the importance of runner and gate system in injection moulding process.

Enlist different types of milling and explain any one in detail.

Discuss pin ejection used in injection system in detail.

List various parts of Die and write function of any three parts..

Write a short note on flash mould.

Explain planning & shaping operations in mold manufacturing.

How to design gate position?

Explain Rheological considerations in design of extrusion die.

Explain Pin and valve ejection system.

Explain feed system in Transfer Molds.

Write a short note on runner balancing.

Explain design of semi positive and flash moulds in detail along with suitable examples.

Write a short note on economical consideration of plastic mould.

Write a short note on plunger type compression.

Explain design of straight through dies with calculations.

How EDM and CNC are used in mould and die making?

What are the factors to be highlighted in sheet work?

How to calculate transfer pot of transfer moulds?

Explain the importance of Bill of material in sheet work.

Explain third angle projection method with suitable diagram.

Write a short note on semi-automatic compression mould with a neat sketch.