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    • ASNT-Basic NDT LEVEL-II
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hvac coaching center in trichy

SAND TESTING EQUIPMENThvac coaching center in trichy

hvac coaching center in trichy

Reasons to Leak Testhvac coaching center in trichy

1. Product Safety & Liabilityhvac coaching center in trichy
  • Medical components may cause injury or death when leaking during or after procedures (heart catheters, IV sets, etc…).
  • Automotive components may cause injury or death when leaking in operation (flammables and brake related components).
  • Appliances may cause electrocution of the user (irons & steamers).

  • 2. Quality Control hvac coaching center in trichy
  • Most common method of testing bonded plastic components which require hermetic joints.
  • Testing parts following assembly can alert maintenance to setup problems with welding equipment.
  • 100% testing virtually eliminates field failures related to the bonding/joining process.
  • Pressurized Fluid

    Leaks are detected visibly or by measured decay by specialized fluid pressure gauges or electronic sensors.

    Advantageshvac coaching center in trichy
  • Simulates "real-world" conditions for parts designed to contain or pass fluid.
  • Performs superbly for testing at pressures above 500PSI.
  • Preferred for destructive testing (pressurize to burst).hvac coaching center in trichy
  • Disadvantageshvac coaching center in trichy
  • Added Costs: Parts often require cleaning/drying after test.
  • Time Consuming: The time required for fluid to leak through a small void in the part can be considerable, sometimes hours.
  • Messy: Fluid gets everywhere when testing using this method.
  • Costly Equipment: Equipment for fluid testing is often custom made per application and must consider containing fluid.
  • Pressurized Air/Gashvac coaching center in trichy

    Leaks are detected visibly when immersed in fluid, or audibly when using sensitive "listening" devices or by electronic sensors when using pressure-decay instruments.

    Advantageshvac coaching center in trichy
  • Fast: As air molecules are roughly 500X smaller than water molecules. Can detect much smaller voids in parts in considerably less time than fluid testing.
  • Low Cost: Sensitive equipment is available by many manufacturers at far lower costs than sensitive fluid systems.
  • Clean: Parts do not have to be cleaned of fluids after test.
  • Disadvantageshvac coaching center in trichy
  • Very costly to achieve pressures above 500PSI.
  • As air compresses so much more than fluid, can be difficult to use for some destructive tests.
  • Only represents (does not duplicate) "real-world" testing for parts containing or passing fluid.
  • Vacuumhvac coaching center in trichy

    Leaks are detected visibly when immersed in fluid (liquid entry into part) or by specialized electronic vacuum sensors or gauges with vacuum-decay instruments.

    Advantageshvac coaching center in trichy
  • Ideal for parts that will have internal vacuum applied
  • Can create leak paths that cannot be replicated by pressure testing such as dynamic seals ("o" rings and rubber diaphragm valves).
  • Disadvantageshvac coaching center in trichy
  • Not good for testing parts that would otherwise have pressure applied internally in actual application as the vacuum may inadvertently seal small voids in flexible parts.
  • Vacuum is limited to approximately -14.7 PSI (ideal vacuum). With typical vacuum pumps, only -10 PSI or so may be possible.
  • Categories

    • Leak Testing
    • Penetrant Testing
    • Ultra Sonic Testing
    • Radiographic Testing
    • Eddy Current Testing
    • Magnetic Flux Leakage
    • Magnetic Particle Testing
    HVAC Coaching Center in Trichy

    Contact Info

    Address :# 266, Gowtham Complex, 3rd Floor,2nd Street, Gandhipuram, Coimbatore-641 012,
    Tamilnadu, India.
    Telephones : +0422- 4397979
    Mobile : +91 82200 53888 ; 82200 53899
    E-mail: info.aplusndt@gmail.com

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