Design Technology

andrew_owens
Mind Map by andrew_owens, updated more than 1 year ago
andrew_owens
Created by andrew_owens about 6 years ago
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Mind Map on Design Technology, created by andrew_owens on 12/01/2013.
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Design Technology
1 Woods
1.1 Hardwood
1.1.1 Beech
1.1.2 Oak
1.1.2.1 Tough, Hard, Visually attractive, Durable, Stable
1.1.3 Mahogony
1.2 Manufactured
1.2.1 MDF
1.2.1.1 Cheap
1.2.1.2 Available in large sheets
1.2.1.3 Stable (doesn't warp or twist)
1.2.2 Plywood
1.3 Softwood
1.3.1 Pine
2 Metals
2.1 Ferrous
2.1.1 Mild Steel
2.1.1.1 Properties
2.1.1.1.1 Tough Ductile Malleable Hard Durable
2.1.1.2 Advantages
2.1.1.2.1 Cheap Tough Easy to weld Strong
2.1.1.3 Disadvantages
2.1.1.3.1 Rusts easily
2.1.1.4 Iron and Carbon mixed together (alloy)
2.1.2 Stainless Steel
2.1.3 Carbon Steel
2.2 Non-Ferrous
2.2.1 Aluminium
2.2.1.1 Advantages
2.2.1.1.1 Can be recycled Easy to draw into thin sheets
2.2.1.2 Disadvantages
2.2.1.2.1 Expensive Difficult to weld
2.2.2 Copper
2.2.3 Zinc
2.3 Alloys
2.3.1 Brass
2.3.1.1 Advantages
2.3.1.1.1 Can be polished, Good conductor of electricity, Good corrosion resistance
2.3.1.2 Disadvantages
2.3.1.2.1 Expensive
3 Plastics
3.1 Thermoplastics
3.1.1 PVC
3.1.2 Acrylic
3.1.3 ABS
3.1.3.1 High impact strength, tough, scratch resistant, Durable, Plasticity, Good weather resistance
3.2 Thermosetting Plastics
3.2.1 Polyester Resin
4 Finishing techniques
4.1 Woods
4.1.1 Varnish
4.1.2 Paint
4.2 Metals
4.2.1 Paint
4.2.2 Powder coating
4.2.3 Galvanising
4.2.4 Plastic dip coating
4.2.5 Plating
4.3 Advantages
4.3.1 Improve appearance, Stops rusting, More durable
5 Joining methods
5.1 Wood Joints
5.1.1 Mortise and tenon
5.1.2 Butt Joint
5.1.3 Dowel Joint
5.1.4 Dovetail Joint
5.1.5 Rebate Joint
5.2 Joining Metal
5.2.1 Welding
5.2.2 Brazing
5.2.3 Soldering
6 Tools & equipment
6.1 Saws
6.2 Drill bits
6.3 Fittings
6.4 Marking out
7 CAD/CAM
7.1 Computer Aided Design
7.1.1 Virtual Modelling
7.1.1.1 Designs can be viewed from all angles
7.1.1.2 Can send files electronically (email)
7.1.1.3 Designs can be changed easily
7.1.1.4 Test the product before it is made
7.2 Computer Aided Manufacture
8 Ethics
8.1 Built-in Obsolescence
8.1.1 Throw-away culture
8.1.2 New improved models come onto the market
8.1.3 Products designed to stop working
8.1.4 Cheaper to replace a product than to repair
8.2 Offshore Manufacturing
8.2.1 Cheaper labour and energy costs
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