Cards (6)

  • Press forming
    • Used to remove part of the sheet or to trim excess metal off the sheet
    • Press formers can be used in conjunction with robots
    • The sheet metal is lifted and placed into the machine, and finished pressings are transferred to the next process
  • Metals used in press forming
    Medium carbon steel and aluminium
  • Press forming
    • Only usually used in mass production or large-scale production
    • Due to the cost and complexity of making the dies
  • Making press forming dies
    1. Made from hardened steel
    2. Often machined using erosion techniques (where a material is worn away using sparks)
    3. Burnished to give a high-quality surface
    4. A highly specialist job, and is therefore costly
  • Only when manufacturers can spread the costs by producing and selling many thousands of the same, can such expenditure be justified
  • Reasons for using medium carbon steel and aluminum
    Malleability & Ductility