REGION
Increasing the Operability
of Machinery for Thirty Years
dif s.r.o., a company from Bohumín, established in 1990, is happily celebrating its thirtieth anniversary
this year. The motto of the company is, “No more breakdowns!” The company performs diagnostics
and analyses of the technical conditions of machinery. They carry out optical measurements and
vibration monitoring, especially in the operations of production plants. They focus on the installation
of diagnostic on-line systems and do machinery repairs.
“As doctors use an electrocardiograph to identify and
diagnose abnormalities of a heart, we use our diagnostic
instruments to analyse the condition of a machine.
They tell us if a fan is well-balanced, or if the problem is
a damaged bearing,” says ing. Radim Falc, CEO of the
company.
dif works in the paper, automotive, energy, and
engineering industries. Diagnostic on-line systems
installed by dif are used by car producers Škoda Auto
and T.P.C.A. Kolín. Other happy clients include ABB,
Mondi paper mill, Smurfit Kappa, and OKD. dif teams
also serve business partners in Slovakia, Poland,
Romania, and Russia. dif experts installed the guides for
robotic movement in Belgium, a glass-fabric production
machinery in Mexico, and measured the production line
in a factory producing airplane wing fibres in Atlanta,
Georgia, USA.
Text:
redakce,
Radka Legerska
Foto:
www.skoda
-storyboard.com
archiv dif
www.dif.cz
High-tech Equipment and Skills Solve Challenging
Situations
Optical measuring and setting up machinery is
performed by combining techniques using laser tools
and geotechnical surveying apparatuses. Cutting-edge
instruments, customized equipment, the company’s
own measuring methods, and the experience of the
technicians guarantee top precision in measuring,
68 ǀ POSITIV 3/2020
which is absolutely vital in machinery and engineering
production. The measuring tolerance of a laser tool is up
to ±0,01 mm; the precision measurement station Leica
TDRA6000 measures with a tolerance of ±0,25 mm at
a distance of thirty metres. These precision parameters
convinced Hansen Electric, the contractor servicing
the generators of the Swedish water power plant
Ängabäck, near the town of Markaryds, that dif is the
right company to perform control measurements in
their power plant.
Diagnosticians from Bohumín Measured Generators
of Swedish Power Plant
A medium-sized water power plant from 1952 is part
of a scheme of power plants on the Lagan River. The
seven-metre waterfall drives two Kaplan turbines which
annually produce 28 GWh. In 2019 and 2020, Strojírny
Brno performed repairs on the turbines, and Hansen
Electric of Opava serviced both generators.
Before and after repairs, dif diagnosticians checked the
stator and rotor geometry, and measured the air gap in
between. The check was to diagnose the deformities of
these parts of the turbine which might have developed
over the seventy years of the power plant’s operation.
“Evaluating all the values in the process, we chose
a geodetic method of measurement using our precision