Closed Die Forging - PowerPoint PPT Presentation

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Closed Die Forging

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Closed Die Forging is a forging process in which dies move towards each other and covers the workpiece in whole or in part. The heated raw material, which is approximately the shape or size of the final forged part, is placed in the bottom die. – PowerPoint PPT presentation

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Title: Closed Die Forging


1
Closed Die Forging
2
What is Closed Die Forging?
  • Closed Die Forging is a forging process in which
    dies move towards each other and covers the
    workpiece in whole or in part. The heated raw
    material, which is approximately the shape or
    size of the final forged part, is placed in the
    bottom die.

3
Process
  • In commercial closed die forging, the workpiece
    is usually moved through a series of cavities in
    a die to get from ingot form to the final form.
  • The first impression is used to distribute the
    metal into the rough shape in accordance to the
    material needed later in the cavities.
  • The cavities after this are called blocking
    cavities in which the piece is worked into a
    shape that more closely looks like the final
    product.
  • The final shape is forged in a finisher or final
    cavity. If there is only a short run of the parts
    then it may be more economical to forgo the final
    impression cavity and instead machine the part.

4
Common Materials in Closed Die Forging
  • Steel
  • When it comes to closed die forging, steel is by
    far the most common material used.
  • Alloy steel and carbon steel are the most widely
    used in closed die forging process for its
    competitive price and easy deformation.

5
Aluminum
  • Aluminum is popular due to its low density, high
    strength, and easy machining. It is widely used
    in closed die forging process especially for the
    automotive and aerospace industries.

6
Copper or Brass
  • Copper or brass is also commonly used in closed
    die forging, which is the most expensive of the
    three materials that we have discussed. Copper
    forging or brass forging is most commonly used
    for valve and pump fittings.

7
Benefits of Closed Die Forging
  • Distinct from investment casting for forging
    companies, Closed die forging is the most
    cost-effective metal forming methods for the low
    cost of each part.
  • As products are deformed in high precision
    forging dies, so the toleraces of closed die
    forging parts are always tight. And surface
    finish is always good.
  • Only waste of material during forging process is
    the flash. Such flash will be moved by trimming
    die, and you will be a finished forging blank
    after that saving materials in the process.

8
THANK YOU!
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