MAGNETIC TESTING (MT) – LEVEL 2

COURSE FEE: RM 6,500 DURATION: 5 DAYS LOCATION: PUCHONG, SELANGOR

MAGNETIC PARTICLE TESTING (MT) LEVEL 2 DIRECT ACCESS

Magnetic Particle Inspection is a nondestructive testing method used for detecting surface and near surface flaws and defects. MT is fast and relatively easy to apply, and surface preparation is not as critical as it is for other NDT methods. These characteristics MT make it one of the most widely utilized nondestructive testing methods. MT uses magnetic fields and small magnetic particles similar to iron filings to detect flaws in components. The only real limitation is that the component being inspected must be made of a ferromagnetic material such as iron, nickel, cobalt, or one of their alloys. The structural steel, automotive, petrochemical, power generation, and aerospace industries are a few examples that utilize magnetic particle inspection. Underwater inspection is another area where magnetic particle inspection may be used to test items such as offshore structures and underwater pipelines.

COURSE DESCRIPTION

The course provides a full appreciation in the techniques and methods of magnetic particle inspection. A high theory and practical content is offered by the course. The course will suit a wide variety of NDT personnel including QC inspector and technicians and relates to the inspection of forgings, casting and welded structures.

WHO SHOULD ATTEND
This course is opened to all participants, in particular NDT personnel, supervisors, NDT trainers, contractors and researchers and those who are interested in Ultrasonic Testing technique.

SCOPE

This course covers the principles of Magnetic Testing and prepares a candidate to
• Select equipment to conduct test
• Setup test equipment
• Steps to conduct test
• Familiarize with codes and standards
• Interpret results with respect to applicable codes and standards
• Understand limitation of the test method
• Write test reports.

TRAINING
Training material is presented in modules that are followed by quizzes

MODULE 1: MANUFACTURING DISCONTINUITIES
• Types of Discontinuities: Inherent, Processing and Service
• Casting Discontinuities: Hot Tear, Cold Shut, Porosity, Shrinkage
• Primary Processing Discontinuities including discontinuities in Rolling, Forging, Drawing, Extruding
• Secondary Processing Discontinuities including discontinuities in Grinding, Heat Treating, Machining, Welding, Plating
• Service Discontinuities:- Erosion, Wear, Fatigue, Corrosion, Creep

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
• 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

MODULE 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

MODULE 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 and Visual Inspection

MODULE 7: TYPES OF INDICATIONS
Interpretation including Relevant, False, Non-relevant indications

MODULE 8: CODES AND STANDARDS (Specific Training)
MT Inspection Procedures

Codes
• ASME Section V Article 7: Magnetic Particle Examination
• ASME Section VIII Div. 1: (Acceptance Criteria)

Standards
• ASTM E-709: Standard Guide for Magnetic Particle Testing
• 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

PRACTICAL TRAINING
• MT Yoke & Permanent Magnet: Dry Visible, Wet Visible, Wet Fluorescent
• Central Conductor
• Coil Shot – Longitudinal
• Ketos (Betz) Ring – Depth of penetration
• Training on component and weld flaw samples

EXAMINATIONS

Examination Scheme is according to ISO 9712
• General
• Specific
• Practical

Note: Candidates must score a minimum of 70 % for each paper