Manufacturing of Draft Fans - PowerPoint PPT Presentation

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Manufacturing of Draft Fans

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The manufacturing of any system involves a series of mechanical process. Each part is manufactured using a different mechanical process such as casting, machining, drawing, joining etc. After the parts are manufactured, they must be sent for various hardening process annealing, carbonizing etc. depending on the material used. – PowerPoint PPT presentation

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Date added: 7 January 2025
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Title: Manufacturing of Draft Fans


1
Manufacturing of Draft Fans
Sandra McCall Writer at Top developments
creates content to support https//top-development
s.com/
2
  • The manufacturing of any system involves a series
    of mechanical process. Each part is manufactured
    using a different mechanical process such as
    casting, machining, drawing, joining etc. After
    the parts are manufactured, they must be sent for
    various hardening process annealing, carbonizing
    etc. depending on the material used.
  • Various mechanical processes involved
  • Casting
  • In this process the new part is formed from the
    melting of the metal, and then it is subjected to
    flow into the mold cavity where it takes the
    required shape and is allowed to solidify.
  • Parts such as vanes, casing and shafts in the
    draft fans are manufactured by this process.
  • The metal formed in this process is usually of
    the uniform characteristics.
  • The metal grains are uniformly distributed in the
    metal.


3
  • Machining
  • In this type the already existed part of a system
    or a part that is taken from the casting process
    is used in order to make a new part.
  • Machining process uses various machine tools such
    as lathe, planer, shaper, milling machine etc.
    and they require electric power.
  • The ends and corners of the draft system are to
    be chambered in order to prevent any cuts to the
    human.
  • Some parts of the system such as vanes of the fan
    are machined in order to maintain or remove the
    excess material on the vanes.
  • Joining
  • This process is of two types permanent joining or
    temporary joining.
  • Temporary joining involves nuts and bolt fitting
    whereas permanent joining includes riveted
    joints, weld joints etc.
  • In draft system bolt and nut joints are seen in
    removable or frequent replaceable parts. For
    foundation support of the system, we use eye
    bolt.
  • Welds are used for permanent joining. Parts which
    are broken or very big in size are welded
    together to get a single unit.


4
  • Riveted joints serve the same purpose as the
    welded joints. But in riveted joints a piece of
    the metal is used which combines the two distant
    pieces in a single shape by the application of
    pressure. This is done with casing when it comes
    in two different parts.
  • Metal hardening process
  • There are many metal hardening processes such as
    annealing, carbonizing etc. The final outputs of
    the casting process may not have good strength so
    these processes will provide the necessary
    hardening support to the parts.
  • We use different hardening processes with
    different metals.
  • Parts of the draft system which are made of
    steels under go annealing process.
  • The parts such as casing are made of steel which
    are to be annealed
  • The manufacturing process of the parts is
    important because the use of an accurate process
    will make it easy for understanding which type of
    repair is appropriate for the given part of the
    system.

5
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