DT Chapter 1

• Mechanical property


  How a material reacts to an external force
• What is power dip coating

  An efficient method of applying plastic coatings to metal surfaces
• What is powder coating

  A coating of electrically charged powder that is baked on to create a tough finish (physics)
• What is galvanising


  coating iron or steel with tin or zinc
• What is anodising

  staining aluminium with pigment to introduce colour and reduce corrosion, used on mountain bike parts
• What is electroplating

  The use of electrolysis to put a thin layer of metal on the surface of an object
• What is electrostatic spray painting


  The paint is magnetic so it automatically covers the entire thing
• What are examples of knock down fittings

  Cam lock, corner block, scan fitting
• Box joints


  Joints made from wide and thin pieces of wood. Screws and nails are usually used when using manufactured boards (eg: cabinets)
• Tensol 12


  This is an adhesive to join plastics together which is quick and easy to use .
• Contact adhesive


  Is a waterproof strong adhesive that works on wood, metal and plastic
• Epoxy resin


  Strong adhesive made up of 2 parts
• Cascamite


  A type of waterproof adhesive supplied as powder for wood
• What is a threaded bar


  A metal bar threaded over entire length of rod
• What are different types of screws

  Countersunk head, dome head, binding head,
• What are different types of nails

  Oval wire, panel pin
• What is pop riveting?

  Used to join 2 sheet metals or plastics using pin and rivet
• What are permanent joining techniques

  Welding, soldering, adhesive
• What are temporary joining processes

  Nut and bolt, press fit joints,
• What is arc welding


  Joining metal using same filler material
• What is soldering?

  Joining 2 metals with a different filler material
• What are deforming/reforming processes

  Vacuum forming, steam bending
• What are addition processes


  Welding, soldering
• What are waste processes

  Planing, wood turning, plasma cutter
• Sand Casting


  a metal casting process characterized by using sand as the mold material.
• Die Casting


  a permanent mold casting process in which molten metal is injected into mold cavity under high pressure
• Casting


  The process of pouring liquid materials into a mould
• work hardening


  when a non-ferrous is continually bent
• Annealing


  after a piece of metal is work hardened
• non-ferrous metals


  metals that do not contain iron
• alloys


  a mixture of 2 or more pure metals
• ferrous metals


  metals and alloys that contain iron
• CFRP

  Carbon fiber reinforced polymer
• GRP

  glass-fibre reinforced polymers
• composite


  A material made of multiple layers of fibers held together with a matrix.
• laminating


  the process of bonding two or more layers of material together to form a thicker and stronger section
• steam bending


  Softening the fibres of wood with steam to allow it to bend
• softwood


  the wood from conifers or evergreen trees
• hardwood


  comes from deciduous trees
• PP


  Polypropylene