Soyer SRM EcoWeld BMK-20i, Operating Instructions Manual, Page: 19 / 80

Operating instructions BMK-20i | Heinz Soyer Bolzenschweißtechnik 19
6 Description of the BMK-20i stud welding device
The main elements of the stud welding device and their function are shown and
described in the following.
6.1 Type designation
Designation
Order number
Feature
BMK-20i
P01347
Mains voltage
3 x 400 V, 50/60 Hz, 32 AT
6.2 Working method
With the SOYER
®
BMK-20i stud welding device, pins and threaded studs from M3 to
M16 or Ø 2 - 16 mm (M16 preferred with SOYER ® HZ-1 weld studs & SRM Technology ® )
made of steel and stainless steel can be welded.
Only welding studs from SOYER
®
(preferably HZ-1 and MF types) may be welded.
Fasteners from other manufacturers must be approved by SOYER ® .
The BMK-20i stud welding device operating with SRM Technology
®
was specially
developed for mobile use. Thanks to SRM
®
, it enables problem-free welding, even
under difficult conditions.
The BMK-20i stud welding device operates on the basis of a compact inverter power
source and provides a constant welding current from 100 A to 1200 A at welding times
from 20 ms to 500 ms. The rectified mains voltage is converted into high frequency
voltage with a frequency of 75 kHz by an Insulated Gate Bipolar Transistor-based
(IGBT-based) inverter. The energy is transferred by a high frequency transformer and
rectified on the output side. As a result of the high control speed in combination with the
integrated SRM
® welding process of the BMK-20i, the reproducibility of the welds is
increased and the quality of the welds considerably improved.