The FERITSCOPE® FMP30 measures the ferrite content in austenitic and duplex steel according to the magnetic induction method. All magnetizable structure sections are measured i. e., in addition to delta ferrite also strain-induced martensite, for example, or other ferritic phases.
It is suited for measurements according to the Basler-Standard
and according to DIN EN ISO 17655. Areas of application are onsite
measurements, e. g. of austenitic platings as well as weld seams in stainless
steel pipes, containers, boilers, or other products made of austenitic or duplex
steel.
Duplex steel is used increasingly in the chemical and petrochemical
industries, e. g., for boilers and pipelines. A ferrite deficit in the weld
seam area leads to strength reduction, an excess ferrite content to a reduction
in toughness and ductility.
In particular when welding duplex steel, the ferrite content
in the welding area can easily assume unfavorable values either due to
unsuitable welding filler materials or through poor heat input or heat removal.
Only an onsite measurement can provide the assurance that the processing did not change the optimum ferrite content in an unfavorable manner at the expense of mechanical or corrosion-resistance properties.
Simple and quick measurements
It is easy to measure the ferrite content accurately when using
the Feritscope. Upon probe placement on the surface of the specimen, the
reading is displayed automatically and stored in the instrument. The probe can
also be placed onto hard to reach areas. For such applications, the instrument
features an “external start” function to trigger the measurements with the push
of a button. This is ideal for measurements in pipes, bore holes or grooves.
Finding weld seams in polished surfaces is made easy through
the “continuous display” instrument function. When scanning the surface with
the probe with this function enabled, the continuous readings are displayed
only. A change in the ferrite content reading indicates that the weld seam has
been found.
For easy ferrite content measurements along a weld seam, the
instrument offers the “continuous measurement capture” function. When scanning
the weld seam with the probe positioned, the continuous readings are captured
and stored. This provides a ferrite content profile along the weld seam.
Measurement influencing factors do not significantly affect
the Feritscope. Ferrite content measurements can be carried out
regardless of the substrate material properties starting at a plating thickness
of 3 mm. Corrective calibrations with customer-specific calibration standards
or correction factors (included) can be used to take influences of the specimen
shape (strong curvature), plating and substrate thicknesses into account. The
calibration is always stored measurement-application specific in the respective
application memory.
FERITSCOPE® FMP 30
FERITSCOPE® FMP 30
