Non destructive testing

Reference Blocks/Field Indicators
Reference block №1 (EN ISO 9934-2)
The reference block is a disc with 2 types of natural cracks on the surface.
Coarse cracks are the result of the polishing, fine cracks are the result of
stress corrosion. The block is permanently magnetized by central
conductor through the hole. Estimation of magnetic particle suspensions is
made by visual or other appropriated method of comparison of the
indications.
Specifications:
Sample diameter: 50 mm
Sample height:
10 mm
The width of cracks: 2-10 µm
Article No. 134.002.002
Reference block №2 (EN ISO 9934-2)
Reference block is a self contained unit requiring no external magnetic field
induction. Used to determine the quality of the magnetic particle
suspensions. The block consists of 2 soft iron bars, separated by a thin
(15µm) Al-foil, representing an artificial defect. Permanent magnets are set
on the sample ends. Because of the permanent magnetic field the bars get
magnetized and magnetic particles accumulate over the artificial defect,
forming indicator lines. The quality of the suspension or dry powder is
estimated over the summarized the length of the lines.
Specifications:
Dimensions (LхWхH):
Tangential component of magnetic field
over the artificial defect at points G (-4):
В (4): 1А/cm
155х40х12 mm
-1А/сm
Article No. 134.002.100
Magnetic field direction
Field Indicator according to Berthold
Designed to determine the strength and direction of the selected
magnetizing setup and the quality of magnetic powder suspension.
Specifications:
Sample diameter: 20 mm
Sample height: 5 mm
Holder length: 95 mm
Weight: 24 g.
Article No. 134.003.000
Magnetic Field Indicator D 250 (ASME-V)
The magnetic field indicator type D 250 is designed in accordance with the
following specification methods of non destructive testing :
MIL-STD-271 E, § 4.3.2.5.5, figure 8
NAVSHIPS 250-1500-1, § 12.4.1.5, figure 12 – 17
ASME, section V, Art. 25, SA-275, figure 8
The sample is used for localization of magnetic fields and their directions
during performance of magnetic particle testing.
Magnetic field direction
Specifications:
Sample diameter: 27 mm
Sample height: 4 mm
Holder length: 100 mm
Weight: 42 g.
Article No. 134.003.100
Ketos Ring (ASTM E 1444-01)
The sample is designed to determine the defectoscope working capacity
and the quality of magnetic powder suspension. The sample represents
itself a 7/8"(22,2mm)-wide disk. Outer diameter 5"(127mm), inner diameter
1,25"(31,75mm) - made from steel AISI 01.
12 holes (diameter 0,07" (1,78mm) are placed on different distances from
the outer cylindrical surface. When current (FWDC or HWDC) is passed
through the central conductor, (conductor diameter 1 3/16 “, conductor
length mustn’t be less then 400mm), waste fields appear, decreasing as
the distance from the hole to the outer cylindrical surface increases. When
the magnetic suspension is applied on the disk, magnetic powder
accumulates over the cylindrical surface holes, forming indicator lines.
The process, corresponding to the recovery of the majority of lines is
accepted as optimal.
Article No. 134.004.000
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