SREM Technologies

Non-Destructive Testing by MPI is a technique based on magnetic fields/electro-magnetic fields. It is not limited to the defects on the surface of a part but it is still interesting because it is a global control method unlike ultrasounds or Eddy currents which are local ones.

MPI controls consist of applying a magnetic field on the part to control so that it is saturated. The presence of defects on the surface will arouse field leak flows which will be highlighted thanks to magnetic developers. These developers will be colored under white light and fluorescent under UV light.

There are multiple ways to magnetize a part to control: An electro-magnetic field (using alternating, rectified, or direct current), applying electricity directly on the part, or using a permanent magnet.
The parts must be cleaned after control (removing the white contrast if some has been used) and they must be demagnetized.

The main advantages of MPI controls over PT ones are the quickness of the process and the possibility to detect flaws on the surface of the parts even if these defects are closed. However you can use MPI controls on ferro-magnetic parts only.

Penetrant Testing inspection is highly developed in aviation. Yet, other industries, especially cars industry, develop new safety parts magnetic materials and acquire this means of control.

To meet these very diverse needs, SREM Technologies offers a range of facilities and can realise the requested specifications :

• Manual and automatic systems.
• The process by immersion, pneumatic and electrostatic spraying.
• The standard modular installations adapted to the dimensions of your parts
• Special facilities

Due to a machining operation or handling by electromagnets, a ferromagnetic part may keep a quite important residual magnetic induction. Yet, a permanent magnet can be very troublesome in the context of an industrial process. It can interfere with instruments using magnetic sensors, it can attract the filings and chips during machining operations, or even deflecting an electron beam during a welding operation.

SREM Technologies offers a wide range of demagnetizers allowing you to reduce the residual magnetic induction at a level compatible with your applications. We will advise you to ensure fast and reliable demagnetization of your parts and will meet your specifications that you may require.

Every non-destructive testing technics have their own application area and their own limits. The MPI is best for detecting cracks in parts manufactured in foundries whereas the Eddy currents are best for detecting hardness problems, grades of materials, and defects. Ultrasonic testing allow dimensional control by streaming on lengthy products and the detection of defects.
Integrating these three technics, SREM Technologies design and manufactures machines responding to complicated requirements which can be using several of these technics at a time.

SREM Technologies is also a specialist in Non-Destructive Testing : MPI, fluorescent and colored PT, ultrasounds and fluorescent tracers for leak detection. SREM offers a full range of  NDT Products.

SREM Technologies is the last French manufacturer for PT and MPI products. SREM has their own research, developing, and manufacture means. This ensures the clients the full control of the process until the commercialization of the products and beyond with our technical assistance. These means allow us to react quickly to adapt our formulations to clients’ specific needs.

Contact us, we will have the appropriate product for your needs and it will be conform to the applicable standard.

Designer and manufacturer of Non-destructive testing accessories, equipments and products and backed by their experience and skills, SREM Technologies also offers a wide range of services such as:

• Renting of equipment
• Training
• Calibrations
• Chemical analyses
• Demagnetization service
• Technical assistance
• MSSA (Magnetism, Special Studies and Applications)

SREM Technologies offers a complete range of accessories in all Non-destructive testing areas such as lamps, measurement devices, panels, spraying systems.