• تهران، میدان ولیعصر (عج)، مرکز تجارت ایرانیان، طبقه 8، واحد 17

Course Duration: ۲۰ hr

EXAMINATIONS

General

Specific

Practical

Candidates must score a minimum of 70 % in each test and a minimum of 80% average for all the three tests

 

Course Outline:

MODULE 1: INTRODUCTION

MODULE 2: THEORY OF MAGNETISM

Magnetic field, Lines of force, Flux density

Permeability, Reluctance, Retentivity, Residual Magnetism and Coercive Force

Diamagnetic, Paramagnetic and Ferromagnetic materials

Leakage flux

Fleming’s Right Hand and Left Hand Rule

Magnetic Fields: Circular, Longitudinal

Hysteresis Curve

MODULE 3: METHODS OF MAGNETIZATION

Faraday’s Law: Electromagnetism

Types of current AC, DC, HWDC

Circular field: Head Shot (Direct Contact), Prods and Central Conductor Techniques, Offset Central Conductor

Advantages and disadvantages of circular field

Longitudinal field: Coils and Yoke 2

Advantages and disadvantages of Longitudinal Field

AC and DC Field Distribution in a Magnetic and a Nonmagnetic Conductor

Demagnetization

MODULE 4: EQUIPMENT

Equipment consideration

Wet Horizontal, Mobile and Portable Equipments

Fluorescent testing, Black Light

Light meter

Accessories

MODLULE 5: MEDIUMS AND THEIR PREPARATION

Dry and Wet method

Particles: Dry and Wet

Properties of particles

Visibility of particles

Methods of Application

Contamination of Magnetic Particles

Settling Test Procedure

Concentration for Wet suspensions as per ASME Sec V Article 7

Bath Maintenance

MODLULE 6: APPLICATIONS

Residual and Continuous Method

Magnetic Particle Inspection of Solid Cylindrical Parts, Gears, Multiple diameter Articles, Discs, Hollow Cylindrical Articles

Selection of proper method of magnetization

Verification of magnetic fields

Checking the adequacy of field using the Pie gauge, shims

Fluorescent Inspection

o Black Light Warm Up Time

o Minimum intensity and light meter

o Visual Adaptation

Visual Inspection

o Minimum light intensity and light meter

Magnetic Rubber Inspection

MODULE 7: TYPES OF INDICATIONS

Interpretation including Relevant, False, Non-relevant indications

MODULE 8: CODES AND STANDARDS (Specific Training)

MT Inspection Procedures

Codes

o ASME Section V Article 7: Magnetic Particle Examination 3

o ASME Section VIII (Accept/Reject Criteria)

Standards

o ASTM E-709: Standard Guide for Magnetic Particle Testing

o ASTM E-1444: Standard Practice for Magnetic Particle Testing

Other codes and standards can be discussed if prearranged with the instructor at the time of registration

MODULE 9: PRACTICAL TRAINING

MT Yoke: Dry Visible, Wet Visible, Wet Fluorescent

Central Conductor

Coil Shot – Longitudinal

Ketos (Betz) Ring – Depth of penetration

Training on Weld flaw samples