Stable strip in hot-dip galvanising lines
EMG eMASS® is a turnkey system based on electromagnets for the non-contact stabilisation of fast-running ferromagnetic steel strips. The main area of application is the homogenisation of continuous hot-dip coating with considerable savings potential.
The benefits of EMG eMASS® can be seen in all types of coating, such as zinc, zinc-magnesium, zinc-aluminium-magnesium, GALVALUME®* and aluminium-silicon, with typical strip temperatures between 460 °C and 650 °C, and even optionally at 700 °C for aluminisation.
It has been proven that a strip stabilised using EMG eMASS® can be better manufactured with very thin coatings of less than 100 g/m2 (100 gsm total). Similarly, advantages can be seen for very thick coatings of 400 g/m2 (400 gsm total) and more, as required for the supporting structures of PV modules.
The system is usually installed directly above the air knife and as close as possible to the nozzle lip that blows off the liquid metal layer. With experience gained from over 80 successful installations worldwide, EMG guarantees customised, optimal integration of EMG eMASS® in the nozzle area.
*GALVALUME® is a registered trademark of BIEC International Inc.
Individual solution for every type of air knife
As the market leader with a large number of different integration solutions worldwide, EMG will find the optimal solution for you.
The better the strip stabilisation system is combined with the air knife and the closer the strip stabilisation is located to thelevel of the air knife lips (i.e. the technology point), the better the results for vibration damping and crossbow reduction and the more manageable it is during regular plant stops.
For example, the beams can be straight or offset in order to arrange the EMG eMASS® magnet housing as close as possible to the nozzle lip in combination with the job-specific design of the supporting structure. Flexible adapters are available for individual situations. Depending on the respective air knife, its vertical and horizontal travel options and its load capacities, the support structure can be attached to the air knife, for example to the air knife height adjustment or to the factory floor. Versions with horizontal and vertical adjustment of the carriers or the actuator housings are possible.
In addition to retrofitting EMG eMASS® in this way into existing systems directly at the operator's premises, there are joint, combined solutions for modernisations and new systems with various suppliers of air knives.
In particular, the ‘Integrated Solution’ with complete mechanical and electrical integration of EMG eMASS® in the air knife has been offered and successfully used worldwide for many years in close cooperation with DUMA-BANDZINK GmbH.
Further information about the integrated solution can be found here: DUMA-BANDZINK: Air-Knives and Integrated Solution.
Have we caught your interest? Get in touch!
"Due to the large number of individually implemented solutions, EMG's understanding of the special features of the manufacturing processes supported by EMG's quality assurance systems has grown over the years. EMG's long-standing presence in the market has led to very in-depth knowledge and experience from which our customers benefit. For example, the EMG eMASS® strip stabilisation system enables demonstrable improvements in quality and zinc consumption in the hot-dip coating of steel sheets."
Steffen Dombrowski, Product Manager
Please contact me:
T: +49 2762 612-388
E-Mail: steffen.dombrowski@emg-automation.com
More solutions
In the production of steel and aluminium strips, the increased demands on new materials and ever more complex components require an increasingly higher level of process reliability. With our innovative quality assurance systems for the cold rolling area, you can optimise your processes - and thus also your product quality. All EMG systems are based on the same hardware and software structure. Benefit from the use of our broad solution portfolio and reduce your TCO (Total Cost of Ownership).
