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How do you calibrate an MPI machine?

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How do you calibrate an MPI machine?

  1. Connect reference shunt in series with output circuit and connect leads to reference ammeter.
  2. Set mag shot amperage to the middle of the equipment operating range.
  3. Initiate mag shot and log reading of both the equipment ammeter and the reference ammeter.

What are the tools used in magnetic particle testing?

Magnetic Particle Test Pieces

  • Tool Steel Ring (AS5282)
  • MPI Test Bar.
  • Quantitative Quality Indicators (QQI)
  • Hall Effect Meter, Gaussmeter, & Flux Meter.
  • Magnetic Field Gauges & Magnetometers.
  • Laminated Flux Strips.
  • Pie Gauges.
  • Centrifuge Tubes.

How do you test MPI?

Magnetic Particle Inspection is performed in four steps..

  1. Induce a magnetic field in the specimen.
  2. Apply magnetic particles to the specimen’s surface.
  3. View the surface, looking for particle groupings that are caused by defects.
  4. Demagnetize and clean the specimen.

How do you test for MPT?

Procedure of MPT

  1. (1) Pre-cleaning. Oil, paint, rust and other foreign materials on the surface to be inspected not only prevent attraction of magnetic particles to the flux leakage, but also lead to form a false indication.
  2. (2) Magnetization.
  3. (3) Applying magnetic particle.
  4. (4) Observation.
  5. (5) Post-cleaning.

Is standard for magnetic particle inspection?

ISO 9934-1:2015 specifies general principles for the magnetic particle testing of ferromagnetic materials. Magnetic particle testing is primarily applicable to the detection of surface-breaking discontinuities, particularly cracks.

How do I improve my MPT?

Five Tips To Improve Your MPT Score

  1. Read the task memo and answer every question set forth in the memo.
  2. Know how to format the most highly tested tasks.
  3. Always write your answer in IRAC format.
  4. Do timed MPTs for each type of task!
  5. Self-grade your MPTs by looking at high-scoring student answers.

What is the formula of fill factor?

Fill factor (FF) is the ratio of the actual maximum obtainable power, represented by the dark blue box, to the product of short circuit current Is/c and open circuit voltage Vo/c, represented by the light blue box.

What is bucket fill factor?

Fill Factor is the percentage of an available volume in a hauler body, bucket or bowl that is actually used. For example, a fill factor of 87 percent for a hauler body means that 13 percent of the rated volume is not being used to carry material. Buckets often have fill factors over 100 percent.

How do you calculate bucket capacity?

We all know that the volume is calculated by multiplying Width x Height x Length or Area of the end x Length.

What is excavator cycle time?

The excavator performance fluctuates in terms of longest cycle times from 45 secs to above 450 sec. It is noticeable that given an extensive range of data, there is no control over loading cycle time.