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406034
Design Technology
Descripción
Mapa Mental sobre Design Technology, creado por andrew_owens el 01/12/2013.
Sin etiquetas
gcse mocks
Mapa Mental por
andrew_owens
, actualizado hace más de 1 año
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Creado por
andrew_owens
hace más de 10 años
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Resumen del Recurso
Design Technology
Woods
Hardwood
Beech
Oak
Tough, Hard, Visually attractive, Durable, Stable
Mahogony
Manufactured
MDF
Cheap
Available in large sheets
Stable (doesn't warp or twist)
Plywood
Softwood
Pine
Metals
Ferrous
Mild Steel
Properties
Tough Ductile Malleable Hard Durable
Advantages
Cheap Tough Easy to weld Strong
Disadvantages
Rusts easily
Iron and Carbon mixed together (alloy)
Stainless Steel
Carbon Steel
Non-Ferrous
Aluminium
Advantages
Can be recycled Easy to draw into thin sheets
Disadvantages
Expensive Difficult to weld
Copper
Zinc
Alloys
Brass
Advantages
Can be polished, Good conductor of electricity, Good corrosion resistance
Disadvantages
Expensive
Plastics
Thermoplastics
PVC
Acrylic
ABS
High impact strength, tough, scratch resistant, Durable, Plasticity, Good weather resistance
Thermosetting Plastics
Polyester Resin
Finishing techniques
Woods
Varnish
Paint
Metals
Paint
Powder coating
Galvanising
Plastic dip coating
Plating
Advantages
Improve appearance, Stops rusting, More durable
Joining methods
Wood Joints
Mortise and tenon
Butt Joint
Dowel Joint
Dovetail Joint
Rebate Joint
Joining Metal
Welding
Brazing
Soldering
Tools & equipment
Saws
Drill bits
Fittings
Marking out
CAD/CAM
Computer Aided Design
Virtual Modelling
Designs can be viewed from all angles
Can send files electronically (email)
Designs can be changed easily
Test the product before it is made
Computer Aided Manufacture
Ethics
Built-in Obsolescence
Throw-away culture
New improved models come onto the market
Products designed to stop working
Cheaper to replace a product than to repair
Offshore Manufacturing
Cheaper labour and energy costs
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