Technology & Steel Application - News

Posted on 12 Feb 2016

20% less energy consumption: Sund Birsta sells first Sirius coil compactor

In December 2015, Sund Birsta was awarded a contract for the new and most advanced coil compactor by Danieli's long term customer RIVA Group.

The RIVA mill in Sam Montereau, France, already has good experience with Sund Birsta compactors and coil handling systems and has been successfully using earlier versions for more than 30 years now.


The new coil compactor, Sirius, will use mainly electro-mechanic drives for its functions and only limited hydraulic power; all systems will be on board, thereby limiting installation and commissioning time. The Sirius will use approx. 20% energy consumption compared to conventional compactors on the market. Carriages travel with electrical gear motors quickly and with low force. Final compacting is then done by hydraulic cylinders with short stroke and high force. The press forces will be kept within the frame work of the two press carriages since they are locked together before final compacting is done. Wire feeding is entirely electrical driven using frequency converters to control speed. The new fully electrical binding unit KNBe has also been introduced and will use servo motors to operate. With servo drives a vast range of analyzing tools are available and these can be used for generating feedback for preventive maintenance. The electrical binding units also avoid any risk of getting hydraulic oil on the coils. The Sirius will help mills save energy while, at the same time, speed and efficiency are optimized. Machine dimensions are smaller than traditional compactors and this will therefore enable substituting older machines on existing foundations.