Latest Developments in Circular Saw Tensioning

Tensioning is the prestressing procedure commonly used to increase the stability of thin saws. This procedure stiffens the saw blade by introducing favorable in-plane residual stresses. The introduction and evaluation of these stresses vary according to the experience and skill of the individual saw filer in a given sawmill. Since tensioning stresses influence saw stability in a predictable manner, an accurate control of the saw tensioning process is needed. This is imperative when precision thin kerf sawing is used. Recent developments in circular saw critical speed theory permit the saw filer to optimize and control tensioning using modern electronic equipment. This paper discusses case studies of industrial application of the most advanced procedures and equipment for saw tensioning by rolling and on-line thermal saw tensioning.

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