Berkenhoff, Germany better known as bedra, has certainly more than one good reason to market and advertise under the motto: “bedra – intelligent wires”.
Whether EDM, electronics, welding or wire for special applications, they all peak as precise products having as final destination the automotive and all sorts of high-tech industries.
In 2013, eying at further modernization, bedra successfully started-up and commissioned a complete new cold rolling line for the production of technological wires made in copper, nickel-silver, bronze and brass.
The line has been designed, manufactured and commissioned by DEM Wire Rolling Technology, Italy.
The rationale behind the project is an increased output rate, however with no compromise possible as to permissible deviations from demand; hence with total emphasis on the outcomes: excellence in geometry, undisputed surface quality, all coupled to repeated statistical behaviour.
This sounds like nothing new for machine builders, except for the fact that this time the focus was on squares as small as 0.35 mm and flats of 3 x 0.8 mm with a tolerance of less than 0.002 mm (2 microns).
Needless to say, the project was a challenge as to quite a number of aspects, namely: the capability of the system to measure on such a minimal scale, stepless adjustment at micronic level and error-free traverse winding at 20 m/s.
But here come the good news: the brilliant joint work of the bedra and DEM teams has paid back: the project, months before just a dream, came true and on schedule.
The line basically consists of pay-off facilities, profile rolling stands, dancers, cooling facilities, wiping devices, in-line measuring devices and coiler with automatic unloading facilities.
DEM acted as a system integrator supplying all the electrical equipment, controls and software for line automation.
This is the latest of a series of cold rolling lines for profiles supplied by DEM to Germany and a great leap for bedra towards the consolidation of its world-leading role in the field of special wires.