what is shot peening? Explain advantage and disadvantage of shot peening? - PowerPoint PPT Presentation

what is shot peening? Explain advantage and disadvantage of shot peening?

This method called as cold work process which is used to finish metal parts to prevent fatigue and stress corrosion failures and prolong product life. In this method small spherical shot bombards the surface of the part to be finished. The shot acts like a peen hammer, dimpling the surface and causing compressive stresses under the dimple. The surface compression stress strengthens the metal, ensuring that the finished part will resist fatigue failures, galling, corrosion fatigue and be cracking and erosion from cavitation. – PowerPoint PPT presentation

Title: what is shot peening? Explain advantage and disadvantage of shot peening?

• This method called as cold work process which is
  used to finish metal parts to prevent fatigue and
  stress corrosion failures and prolong product
  life. In this method small spherical shot
  bombards the surface of the part to be finished.
  The shot acts like a peen hammer, dimpling the
  surface and causing compressive stresses under
  the dimple. The surface compression stress
  strengthens the metal, ensuring that the finished
  part will resist fatigue failures, galling,
  corrosion fatigue and be cracking and erosion
  from cavitation.
• shot peening is a cold work process.
• used to finish machine components to improve
  fatigue and stress corrosion failures.
• small spherical shots bombards the surface.
• dimpling the surface and develops compressive
  stress.
• shot peening can be done without changing part
  design.
• Media used for shot peening steel, ceramics and
  glass.

• When a round part strike a part of surface at
  high velocity the contact area is a point.
• This concentrates the impact energy in a very
  small area.
• causing a radial plastic flow at the impact
  point.
• This plastics flow or movement of metal leaves
  compressive stresses in the part.
• Complete coverage of the with overhauling ball
  impacts leaves a thin permanent compressive
  stress layer in the part surface.

• Shot peening This method called as cold work
  process which is used to finish metal parts to
  prevent fatigue and stress corrosion failures and
  prolong product life. In this method small
  spherical shot bombards the surface of the part
  to be finished. The shot acts like a peen hammer,
  dimpling the surface and causing compressive
  stresses under the dimple. The surface
  compression stress strengthens the metal,
  ensuring that the finished part will resist
  fatigue failures, galling, corrosion fatigue and
  be cracking and erosion from cavitation.
• Shot blasting Shot blasting is used in almost
  every industry that uses metal, including
  aerospace, automotive, construction, foundry,
  shipbuilding, rail and many others. Generally, we
  use this method for cleaning polish metal. It is
  a technological process of removing various
  impurities from different surfaces through
  different types of abrasives. It is also used for
  surface protection and also the prior preparation
  of surfaces prior to further processing, such as
  welding, coloring, etc. Apart from it, we also
  need to tell you something about Shot Peening.

• Advantages
• For consuming scrap from another process,
  machining is a useful process.
• Presently the machined powder is used with high
  carbon steel and some dental amalgam powders.
• Disadvantages
• Lack of control on powder characteristics,
  including chemical contamination such as
  oxidation, oil and other metal impurities.
• .The shape of the powder is irregular and coarse.

• We are the largest shot blasting machine
  manufacturer in India. Get the Shot blasting
  machine _at_ best prices unmatched services. Call
  us _at_ 9811083740.
• URL http//www.shotblasting.org.in
• Email rajansikka64_at_yahoo.com
• Social Media Profile
• https//www.facebook.com/QualitySpareCentre
• https//plus.google.com/u/0/108784353987283425246
• https//twitter.com/quality_spare
• https//www.instagram.com/shotblasting.org.in/

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