Skip to content

Non-destructive testing NDT

WhatsApp + 48 888 905 440

Services

Magnetic particle testing (MT) is a non-destructive testing method used to detect surface and near-surface discontinuities in ferromagnetic materials such as carbon and low-alloy steels.

View Our Services
Badania magnetyczno-proszkowe (MT)

At ULTRARENT we use both yoke techniques and stationary bench equipment, selecting the technique according to requirements, component geometry and working conditions. We ensure high detectability while keeping inspection time as short as possible, enabling quick decisions on components returning to service. Testing is carried out in accordance with EN ISO 9934, by inspectors certified to EN ISO 9712, level 2 and 3.

In practice this means:

detection of surface and near-surface discontinuities such as: fatigue cracks, welding discontinuities, laminations and material defects
testing possible under both visible and UV light – higher sensitivity and better detectability of micro-cracks
ability to test a wide range of components: welded joints, castings, forgings, sheet metal, shafts, steel structures, gears, pins, axles, hooks, rings and other components made of ferromagnetic materials
excellent for detecting in-service damage such as fatigue cracks
in most cases a clear result, easy to document photographically
possibility of field inspection using a portable yoke

Magnetic particle testing is one of the most effective and practical methods for testing: welded joints, castings, forgings, machine components and steel structures.

ULTRARENT Sp. z o.o. is a professional non-destructive testing (NDT) laboratory that provides testing and inspection services across the entire country — from Pomerania to the Subcarpathian region, and from Lower Silesia to Podlasie. Thanks to our wide operating reach and qualified team of specialists, we offer comprehensive service for both medium and large enterprises, as well as smaller industrial plants — in every voivodeship of Poland

List of voivodeships we serve:

Lower Silesian Kuyavian-Pomeranian Lesser Poland Masovian Opole Subcarpathian Podlaskie Pomeranian Łódź Lubusz Silesian Świętokrzyskie Greater Poland Kuyavian-Pomeranian Warmian-Masurian West Pomeranian

Book a specialist visit

Order an on-site inspection anywhere in the country — from Pomerania to the Subcarpathian region!

WhatsApp + 48 888 905 440

Magnetic particle testing is highly effective at detecting surface discontinuities, but like any method it has its limitations. That’s why at ULTRARENT we help you select the optimal set of NDT methods for the specifics of a given component and quality requirements.

badania MT

Penetrant testing (PT) is an NDT method used to detect discontinuities open to the surface, using the capillary penetration of a penetrant into cracks.

Surface methods:

Visual testing (VT) is a basic NDT method involving the assessment of surface condition and component geometry through direct observation or observation using

The method allows detection of surface cracks, corrosion, porosity and other surface welding discontinuities, assembly errors and geometric deviations.

Penetrant testing (PT) is an NDT method used to detect discontinuities open to the surface, based on the capillary penetration of a penetrant into cracks.

Volumetric methods:

Radiographic testing (RT) is an NDT method in which X-ray or gamma radiation passes through the tested component and creates an image of its internal structure.​
This makes it possible to quickly and reliably detect typical material discontinuities in castings and welded joints, such as cracks, gas pores, inclusions, voids or lack of penetration.

Digital radiography in NDT covers the DR (Digital Radiography) and CR (Computed Radiography) techniques, in which X-ray or gamma radiation passes through the component and an image of the internal structure is recorded by a digital detector or imaging plate instead of classic film.

Phased Array Ultrasonic Testing (PAUT) is an advanced NDT method in which a multi-element ultrasonic probe generates an electronically steered beam at multiple angles in a single scan, enabling a full volumetric assessment of welds, castings and structural components.

The method involves magnetising the tested component and applying magnetic particles to it. At the location of a discontinuity a leakage field forms, which attracts the particles and creates a visible indication of the defect.

Thanks to the high sensitivity and contrast of the indications, it is possible to detect defects that are invisible to the naked eye during ordinary visual inspection

MT testing very effectively reveals linear surface discontinuities: fatigue cracks, welding discontinuities, grinding marks, forging laps, rolled-in laps, and certain subsurface discontinuities located at shallow depth. The method works very well for detecting cracks that develop during service.

Yes, the method only works on ferromagnetic materials (e.g. carbon steels, low-alloy steels). MT is not suitable for use on non-magnetic materials such as aluminium, austenitic steels, copper, titanium or nickel. In such cases, penetrant testing (PT) should be used instead.

Magnetic particle testing is most sensitive to discontinuities that break the surface and shallow subsurface discontinuities. For deeper discontinuities, volumetric methods such as UT or RT must be used. For this reason, MT testing is treated only as a surface method.

MT testing is used for steel and other ferromagnetic materials, when high sensitivity to linear material discontinuities and near-surface discontinuities is required.

PT testing is used when the tested material is non-magnetic, or when the component’s geometry makes it impossible to magnetise it adequately in two mutually perpendicular directions.

The final decision depends on the material grade, the expected type and orientation of the discontinuity, the shape, and access to the tested object.

With the contrast (visible) technique, indications are assessed under white light, which simplifies the organisation of the test and is sufficient under typical workshop or field conditions.

 

Testing under UV light makes it easier to detect very fine discontinuities, but requires darkening and stricter control of the testing conditions.

 

Testing under ultraviolet light imposes stricter requirements on surface preparation – the surface should be smooth.

 

The choice of technique should be based on the required sensitivity, client guidelines and the actual conditions at the site.

In most cases there is no need to demagnetise the tested components. However, the decision on whether to demagnetise the tested component depends on the type of component, the magnetising method used, acceptance requirements and further technological processes, where residual magnetism could affect equipment operation or attract contamination.

 

Information regarding demagnetisation should be included in the test procedure and the client’s specification.

See all
PAUT

Phased Array Ultrasonic Testing (PAUT)

TFM

Ultrasonic Testing Total Focusing Method (TFM)

CR/DR

Digital radiography (DR)

VT

Visual testing (VT)

RT

Radiographic testing (RT)

See all

Get a Quote Save Time and Keep Production Running

Join the ranks of industry leaders who have trusted our technology.
+ 48 888 905 440 Monday-Friday: 7-17 So: 9-15
info@ultrarent.com We'll Respond Within 24 Hours
98 %
  • Testing laboratory recognized by UDT — testing conducted in accordance with quality requirements for regulated equipment and critical processes
  • Less downtime and continuous operation — early detection reduces the risk of failure and costly shutdowns
  • Fast readiness and short turnaround times — efficient logistics, priority scheduling, express test results
  • Classic and advanced NDT inspection techniques performed by a team of specialists with years of experience
  • ISO 9712 Level 3 in all five principal NDT methods — VT, PT, MT, RT and UT. We write and approve the inspection procedure, not only perform the test.