RESISTEK manufactures silicon nitride based advanced ceramic welding rolls for use in high frequency (HF) and electric resistance welding.
In the HF welding application, our high quality precision ceramic weld rolls can remove many of the troublesome problems, resulting in reduced downtime, higher quality product from the mill and reduced costs!
Reduced Material Pick-up
RESISTEK’s precision weld rolls eliminate material pick up problems that are commonplace with high frequency welded tubes. This is particularly prevalent with non-ferrous materials where surface condition is critical. Stainless, Brass and Aluminium tube manufacturers can achieve substantially improved surface finishes with no risks of rolling weld spatter or particles into the tube surface.
Improved Weld Roll Life
RESISTEK’s ceramic weld rolls typically achieve 10 to 12 times more life than tool steel rolls; in some instances this has been as high as 20 times.
Reduce HF Heating
Practical tests have shown that ceramic weld rolls can reduce HF weld power by as much as 30%. This actually also reduces unwanted ‘field’ heating of local components such as shafts, stands, lubrication points etc.