We are glad to share our comprehensive knowledge of all aspects of residual magnetization and demagnetizing with you. Our white papers on topics that interest you can be downloaded. And we shall be happy to talk to you about any aspects of interest – please get in touch.
In the assembly of large steel constructions, welding processes are usually used. Often the welding seam is relevant for safety, meaning that its quality is especially important. Residual magnetism reduces the quality and durability of welding seams by interfering with the welding process (magnetic arc blow) and causing magnetic corrosion (hydrogen embrittlement induced by magnetic fields).
In this White Paper a new method for demagnetizing large steel surfaces is described.
When cleaning ferromagnetic steel parts, even with state-of-the-art cleaning machines, effective demagnetizing processes are essential in order to reliably fulfill the increasingly stringent requirements regarding residual dirt. Under the following link is a compilation of further information on this subject.
The process safe compaction of ferromagnetic powders requires low residual magnetism on the tooling. The flow of the metal powder is already reduced at residual magnetism over 2A/cm (2.5 Gauss). Powerful degaussing systems allow the effective demagnetization of powder press frames, adapters and sintered tungsten carbide punches and dies on site.
Magnetization of ferromagnetic parts is caused by a wide variety of processes. Technical equipment such as lifting magnets, non-destructive crack detection, magnetic chucks, magnetized tools etc. cause magnetization of the part. Often a magnetic workpiece is only discovered after there have been difficulties in production, or customers have complained. More in-depth information on magnetism in workpieces, plus definitions and specialist terms, can be found in the following white paper.
Demagnetizers based on the alternating field principle generate electromagnetic fields in the low frequency range. Workplaces are subject to the regulations for health and safety at work in areas involving the application of electromagnetic fields. Internationally the limit value recommendations and guidelines of the ICNIRP apply. In Germany the provisions of BGV B11 apply.
You can find further information on the topic of magnetism and health and safety at work in our 10-page White Paper on workplace safety for demagnetizer operators