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Metal Magnetic Memory Method
Energodiagnostika
Metal Magnetic Memory Method
Conference
News
October 30, 2017
Second International Conference on Diagnostics of Structures and Components Using Metal Magnetic Memory Method. April 24-25, 2018, Budapest, Hungary
July 01, 2017
More than 60 testimonials of organizations on the MMM method efficiency based on the results of practical diagnostics of equipment were presented at the workshop.
June 30, 2017
Energodiagnostika Co. Ltd took an active part in the work of the Congress, Exhibition and in the meetings of the International Society for Condition Monitoring, 13-16 June 2017 in London, UK.

Inspection of mill rollers

The metal’s state inspection using the MMM method on working and backup rolls before and after carrying out of reconditioning repair technologies on them allows assessing the quality of these technologies, the metal structural changes, as well as the level and the distribution of residual stresses. Inspection of new rolls at the manufacturing plants using the MMM method provides the possibility to carry out the quality assessment of the production technology itself.

Fig.1 shows the scheme of the inspection by the MMM method on the working surface of the rolls.

Fig.1. The scheme of the inspection by the MMM method on the working surface of the rolls: --- the zone of the roll’s working surface inspection; 1, 2, 3, 4, 5, 6 – numbers of sections; -> - the direction of movement of the recording device of the TSC-type instrument.

Fig.2 shows the inspection results, obtained using the MMM method, of the ⌀350 (section 6 according to the scheme of fig.1) backup shaft of the strip-feeding plant before the heat treatment “by extraction” (fig.2, a) and after the heat treatment (fig.2, b).

Fig.2a. Results of the inspection by the MMM method before the heat treatment.

Fig.2b. Results of the inspection by the MMM method after the heat treatment.

Energodiagnostika Co. Ltd is the main developer of a principally new non-destructive testing method and inspection instruments based on application of the method of metal magnetic memory (MMM method).
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