> New Application note demagnetization of assembled bearings
Demagnetization is a common process in the bearing industry. In the bearing production process rolling body, outer and inner ring are normally separately demagnetized before assembly. Residual magnetism originating from assembly processes remains often unnoticed. Numerous known damage mechanisms that reduce lifetime can be attributed to residual magnetism. Hence residual magnetism limits became widespread as an essential quality criteria within the bearing industry.
> New demagnetizer MM JE
Maurer Magnetic AG presents the new demagnetizers of the product series MM JE165 / 266 / 300. They can be used either manually or being integrated in automated processes. This surface type demagnetizers are well-suited for demagnetizing tools or flat parts. The new developed and patented "Automatic Field Decline Technology" function, prevents a magnetization of the workpiece when the device gets switched off, before the part is removed from the magnetic field of the degausser.
Demagnetizer MM JE
> New White Paper
Demagnetization of large surface steel objects before welding)
Large steel components are mainly joined by welding processes. The weld has often impact on safety, which is why the weld seam quality has a particularly high weighting. Residual magnetism reduces the quality and durability of the welds by disturbing the welding process (magnetic arc blow) and enhances susceptibility to magnetocorrosion (hydrogen embrittlement induced by magnetic fields). This paper introduces a new process for demagnetization of large steel surfaces.
> New measuring instrument M-Test LL for residual magnetism (01.2014)
The demand to detect and measure even the smallest magnetic spots on ferromagnetic components requires a special metrology. The high requirements were implemented in terms of a sustainable and expandable product base by a fundamental new product development. The M-Test LL is to be understood as a technological platform that can be implemented with both manual and automated measurement tasks. Program code for instruments with software is available as open-source.
> New process for demagnetizing large pipes (2013)
Maurer Magnetic is developing in cooperation with the German company Schuler a new demagnetization process for large pipes. The process is suitable for the demagnetization of pipes with diameters ranging from 20 to 120 inches directly in the pipe work.
> Organization of a distribution network in France (2013)
The company Qualisco becomes the agent of Maurer Magnetic AG in some areas of France.
> Full coverage of Germany with distribution partners (2013)
The companies Technisches Büro Gehlhaar GmbH and WiFTec Spezialmaschinen GmbH take over the representation of Maurer Magnetic AG per September 2013 in the remaining areas NRW, Rhineland-Palatinate, Saarland and southern Hesse.
> Maurer Magnetic AG expands sales structure in Germany
The company Bock & Strothmann GmbH is taking over the representation of Maurer Magnetic AG in the core areas of lower Saxony and North Rhine-Westphalia.
The locations in Langenhagen and Bielefeld serve clients of the division Magnetizing&Demagnetizing Technology.
> Maurer Magnetic AG provides demagnetization process for NASA MMS Mission
The NASA Goddard Space Flight Center plans for the year 2014 the unmanned exploration mission MMS (Magnetospheric Multiscale Mission) for the deeper study of magnetic reconnection. The highly sensitive instruments and the accurate navigation of the four unmanned spacecraft of MMS mission require highest magnetic cleanliness of all ferromagnetic components. The proprietary pulse demagnetization developed by Maurer Magnetic AG has been tested by NASA and the high demands were met. The project was successfully completed by delivering a specified demagnetization process to demagnetize the ferromagnetic components of the spacecrafts during assembly on the ground.
from the opening ceremony of 29.9.2009
Maurer Magnetic AG (company of shareholders) invests in spite
of the crisis
At the end of September 2009, the Maurer Magnetic Company, a
family enterprise, was able to inaugurate their extension building
in Grüningen. The latest field of technology of the enterprise,
the demagnetizing technology, has thus found a new home.
the Maurer Magnetic Company has been able to complete the extension
building for this new field of demagnetizing technology. More
than four million Swiss francs have been invested by the enterprise
into this new building, which has been constructed according
to minimal energy consumption standards. The extension building
was duly inaugurated at the end of September 2009. As a consequence,
the Maurer Magnetic Company, the new market leader of the degaussing
technology, is well equipped for the future.
Maurer, the company owner, confidently states: “we understand
magnetism and we are specialists in the field of demagnetizing.
There is nothing which is impossible.” The new technology of
changing field demagnetizing now enables the enterprise also
to demagnetize layer, plug and bulk materials in large scale
manufacture. This is more efficient and less time-consuming
than traditional technologies, which were based on the processing
of individual parts.
to demagnetize physically correctly, four conditions must be
– A high magnetic field
– The number of pulsations
– The precision of the amplitude characteristic, phasing out
– An appropriate frequency
technologies have been characterized by always one of the components
not properly functioning“, Mr. Maurer explains. “Often, the
magnetic field, that is to say the power, was insufficient.
In order to achieve optimal demagnetizing, however, all the
components must favorably combine.” The technology employed
by the Maurer Magnetic Company has achieved demagnetizing to
such an extent that no re-magnetization of the relevant parts
Two examples, from
industrial application and railway technology respectively,
illustrate the employment of this demagnetizing technology:
Swiss manufacturer commissioned us to demagnetize stainless
inoxidation springs, which were difficult to demagnetize, up
to a limiting value of <2A/cm “, Maurer states. Preliminary
tests with a crate full of bulk material did not only reach
the required limiting values without any problem, but also revealed
a further decisive advantage of productivity. “The customer
bought one of our devices
and now processes a large amount of their spring production
in our demagnetizing device before the cleaning. They have recognized
the fact that the cleaning process has become much more efficient
and faster, when the materials are previously demagnetized”,
Mr. Maurer explains.
of magnetism from steel parts, however, also finds application
in other fields. Electromagnetic rail brakes of locomotives
and rail coaches, for example, which are employed in cases of
rapid stops and emergency braking, magnetize the relevant rail
sections and cause the formation of a magnetic pole on the rail
screws. These magnetic poles inadvertently influence the sensors
of the railway compositions when these are overrun, which causes
signal interference of the train control and, at certain travelling
speeds, triggers an emergency brake.
technology has been developed together with the ETH in the course
of the last years. With the many new patents, which have been
granted from all over the world, the Maurer Magnetic Company
has become one of the most innovative enterprises in the field
of demagnetizing. The systems are produced in Switzerland and
mounted in Grüningen.
information see www.maurermagnetic.ch
For any queries please contact:
Albert Maurer, managing director
Telephone 044 936 60 30
on the pictures to enlarge them