Manufacturing Processes

Essay by AlcojimUniversity, Master'sA, April 2004

download word file, 16 pages 4.2

Manufacturing Processes

Assignment 3

James Forty

Contents Page

Task 13


Task 24

Pressing Sheet Metal4

Pressing Sheet Metal & Forming Plastics4



Forming Extrusion:7

Task 38

Press tools8

Punches & Dies9

Re-usable and non-permanent moulds & Suitable casting materials for particular processes10

Example of press capacity calculation in terms of tonnage14

Task 414

The sintering Process for Ceramic materials14

Materials suitable for sintering17

Components that lend them selves to the sintering process19




Task 1



Pressing Sheet Metal:Car body panel

Fridge Doors

Metal Badges

Forming PlasticsCar Dash

Plastic Storage Boxes

Certain bottle tops

CastingEngine block

Cylinder Head

Gas Boiler Casing

Motorbike foot-pegs

RollingSheet Metal for press work (rolling mill) Pressing Sheet Metal

Iron Bar

I Sections

Forming ExtrusionFire Extinguishers

Gas Cylinders

Acetylene Cylinders

Task 1 - Detailed justifications are included in Tasks 2, 3 & 4 whereby the component listed matches with the description of the process.

Also the justification for why these items have been chosen is that from the extensive research that I have done I have found evidence that states that these components are used it the particular processes chosen.

Task 2

Pressing Sheet Metal

See Appendix 2 - (Rover 75 Roof Panel Pressing Analysis)

Materials used on Swindon Pressings Ltd Site: See Appendix 5 - (Steel Specification Sheet)

Pressing Sheet Metal & Forming Plastics

Characteristics of Forming Sheet Material Table:


ElongationDetermines the capability of the sheet metal to stretch without necking and failure.

Yield point elongationObserved with mild steel sheets, also called Lueder's bands and stretcher strains. Causes flame like depressions on the sheet surfaces but can be eliminated by temper rolling, but the sheet must be formed within a certain time period after rolling.

AnisotropyDetermines thinning behaviour of sheet material during stretching - important...