The elongation caused to elements exiting from the roll reducing mill with a length range between 1-2% requires solutions to compensate this process. CSM Machinery designed and manufactured solutions such as stretching machines and roll-to-length machines to provide compensation of the above-mentioned differences.
For an easier manufacturing and in particular for a correct distribution of the tolerances on the heating element during bending it is important to have heating elements with same length as much as possible.
There is different philosophy to compensate the heating elements length tolerance depending on the features and manufacturer preferences. Stretching of heat-treated heating elements is an optimal solution in alternative to the use of a roll-to-length machine.