A.Celli Paper, Italy, is presenting a new revolutionary concept for the production of yankee dryer shells. The two goals are to minimize mechanical issues and maximize uniformity and heat transfer. Both have been achieved with iDEAL® forged YD—the new production technology conceived and patented by A.Celli Paper to respond to these very needs. 

 

 

iDEAL forged YD is characterized by a shell made with a single piece of steel molded and processed using hot forging and rolling systems. The result is a highly innovative and seamless product that stands out for its exceptional quality of manufacture. The homogeneous material and structure, free from residual stress, allow for greater variation in operating pressure and enhanced safety by reducing the risk of failure.

The conventional method, which requires welding, poses the risk of defects; therefore, regular maintenance and inspection is required throughout the life span of the vessel, reducing confidence and increasing cost from expensive inspections and loss of production due to periods of inactivity. 

Furthermore, iDEAL forged YD is innovative in terms of the shape of its internal grooves; the patented shell corner minimizes deformation and stress at the edges, resulting in a thinner root, increasing drying capacity. No less innovative is the head insulation system, comprised of a patented ceramic layer reducing heat loss and steam consumption.