Overview

Magnetic Flux Leakage (MFL) nondestructive test systems accurately detect defects in heavy-wall ferromagnetic tubing, including oil country tubular goods (OCTG).

These electromagnetic test methods are also used to inspect high-permeability ferromagnetic metals such as carbon steel bar, plate, wire rope and parts. Themethod can also be used to detect ferritic inclusions in non-ferritic material.

For typical OCTG and other heavy wall tube tests, Flux Leakage technology detects longitudinal and transverse defects as small as 5% on OD and ID, as well as defects within the wall, depending upon material type and condition.
MFL inspection uses a DC magnetizing field to create enough flux density to bring the material to near-saturation. A transverse magnetizing field is used to detect longitudinally oriented defects, while a longitudinal field is used to find transverse defects.
Surface or internal conditions such as cracks, pits, seams and other defects interrupt the flux field and “leak” beyond the product surface.
This leakage flux is detected by flux sensor probes with MAC configured rotary inspection devices which can wirelessly transmit this data to the instrumentation for processing and analysis.
The amplitude and frequency of the voltage generated by the flux sensor in response to a discontinuity is generally indicative of the severity and location of that discontinuity.
Combining MFL inspection with Ultrasonic (UT) testing fulfills certain API standards for OCTG pipe that require a second method, at the discretion of the pipe producer, when using UT as the first method.

MAC Solutions:

Rotoflux^® features 24 separate channels for longitudinal and 48 channels for transverse defect detection.
LRFX rotaries use transverse magnetism to find longitudinal conditions such as seams, laps and weld line defects.
TRFX rotaries use longitudinal magnetization and provide 100% surface coverage to detect transverse defects.
Wireless data transfer improves signal to noise performance.
Multiple probes are used to increase the speed of test and throughput speed of the test material, while maintaining 100% coverage.
Retractable probe assemblies handle upset & irregular ends.

MAC Today:

Three impressive, state of the art facilities form the backbone of our company: MAC’s ISO 9001-2015 certified manufacturing and engineering facility in Elmsford, New York; a manufacturing and ISO/IEC 17025:2017 laboratory certified plant in Boardman, Ohio; and Magnetic Analysis Nordic’s manufacturing plant in Östersund, Sweden.
Our products and testing instruments are used in countless countries and territories, in plants and mills where wire, tubing, bars and metal parts roll through automatic inspection systems without missing a beat.
In addition, MAC’s global network of field engineers and experienced representatives are always available to locally supply custom services, installation, routine maintenance, or repairs. This support staff gives MAC the unique ability to provide the highest level of personalized service, just about anywhere in the world.
Maintenance service can be provided for most systems by a service contract, or on a per call basis.
Our testers and services are also offered through MAC’s unique leasing program, which includes both equipment and service in one package.

Technology

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Transverse & Longitudinal Rotoflux^® 500mm Multi-Channel System

Applications

MFL test methods are used for the detection of outer surface, inner surface and subsurface discontinuities in magnetic steel tubular products of uniform cross section, such as seamless and welded tubing.
Flux leakage technology can also be used for inspecting ferrous parts, and products such as wire rope, sucker rods and coupling stock.
When properly applied, MFL can detect the presence and location of significant longitudinally or transversely oriented discontinuities such as pits, scabs, slivers, gouges, roll-ins, laps, seams, cracks, holes and improper welds.

14″ Pipe Recording, Transverse Defect Detection

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Magnetic Flux Technology

OTHER TECHNOLOGIES

TacTic^® Material Handling Loaders Model 219

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Material is placed on forward-sloping, plastic-covered storage arms of the loader and is restrained from rolling off by means of adjustable stops at the front of the loader modules.

TacTic^® Material Handling Unloaders Model 187/188

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Models 187 and 188 Unloaders unload each piece after it has passed through the Tester to the output Idler Sections.

TacTic^® Material Handling Sorting Racks Model 190

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These sorters are available for manual or automatic operation. After material is inspected, it is unloaded and ready for sorting.

TacTic^® Material Handling Storage Rails Model 150 Series

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Model 150 Series Storage Rails are available for use adjacent to output Idler sections.

TacTic^® Material Handling Air-actuated “Extended” Drive Units Model Model 204 and 205 Series

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Model 204 and 205 Series Air-actuated “Extended” Drive Units are overhead drive wheels.

MultiMac^® SM

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Eddy Current Instrument for Encircling Coil, Sector and Rotary Probe Testing of Tube, Bar, & Wire

DT-3100™

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DT-3100™ features the capacity to inspect OCTG from 4 1/2” (114.3mm) through 14” (355.6mm) plain-end material.

DT-2100™

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DT-2100™ has the capacity to inspect OCTG from 2 3/8” (60.3 mm) through 8.00” (203.2 mm) plain-end material for longitudinal and transverse flaws.

ECHOMAC^® PA BAR TESTER

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For Full Body Inspection of Bar for Defects

MINIMAC^® II SINGLE- OR 2-CHANNEL DIGITAL TESTER

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Economic, Single or Two Channel Full Feature Digital Eddy Current Tester for Tube, Bar, Wire

MULTIMAC^® – MULTICHANNEL EC

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Eddy Current Instrument for Encircling Coil, Sector and Rotary Probe Testing of Tube, Bar, & Wire

MAGNETIC FLUX LEAKAGE

Overview

Magnetic Flux Leakage (MFL) nondestructive test systems accurately detect defects in heavy-wall ferromagnetic tubing, including oil country tubular goods (OCTG).

MAC Solutions:

MAC Today:

Technology

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