6
Delivery set
Device delivery set (Fig. 1):
Table 2
Controller (1)
pos . 1
AL-scanner (1)
pos . 2
Fe-scanner (1)
pos . 3
ACC (2)
Charging unit of controller ACC (1)
pos . 4
Test-object №1 (Al) (1)
pos . 5
Test-object № 2 (Fe) (1)
pos . 6
Magnetizing attachment of Fe-scanner (1)
pos . 7
Inductors for scanners (SPCS*) (5)
pos . 8
Device Operating Manual (OM)(1)
* – Spare Parts and Components Set
Structure and Operation of the Device
The device consists of 2 basic structural elements (Fig. 2):
the controller and the scanner . Scanners are specialized according
to the type of the examined material. Thus, Al-scanner is intended
for electro-conductive non-ferromagnetic materials and Fe-scanner
for ferromagnetic materials. Two ACC are the power supply source
of the device controller. These batteries are charged by a subsidiary
charging unit . Device function control is carried out in the composition
of Regula 7505M using test-objects №1 and №2.
Magnetographing with the use of the device consists in the successive
execution of a number of operations. Demagnetize, place and fix
the magnetic tape on the examined surface beforehand . Connect
the scanner corresponding to the examined material type to the device
controller. Switch on power supply of the device controller and move
the scanner is moved along the examined surface .
The device controller creates and sends voltage impulses with set
parameters to the scanner. Pulse current, which flows in the scanner
conductor, creates around the scanner the alternating magnetic
field, which induces eddy currents in the conductive material of
the object. The eddy currents trajectories and connected with them
magnetic stray fields reflect the lines of electric resistance specified
by the form, sizes and positioning of defects in the examined item.
The obtained magnetogs of the object (VIN) stray fields are visualized
by Regula 7505M under its OM. The obtained
images are processed
and analyzed for the following expert appraisal.
1.3
1.4
