A theoretical and experimental study of the circular sawing process
-
Lisbeth M. Hellström
,
Sven-Olov Biller
Abstract
To gain further insight into the energy dissipation during the wood sawing process, a theoretical model has been developed. The model is based on the assumption that there are two basic causes for energy dissipation during sawing: the creation of a new surface and the compression of material below a saw tooth. It is assumed that both contributions can be dependent on the cutting angle (the angle between the fiber direction and the tangent to the path followed by a saw tooth) because a saw tooth changes its angle of attack during its way through a log. To determine this dependence of the dissipation on the cutting angle, a series of experiments with pine plank sawing were performed by means of different feeding rates and cutting angles while the electrical power supplied to the saw was measured. The parameters in the theoretical model were derived from the experimental findings. Finally, two tests were carried out under different conditions with respect to thickness and cutting angles and the validity of the model was confirmed concerning the prediction of the electrical power consumption.
Lee Kristoffer Kramberg at Andritz Iggesund Tools AB is greatly acknowledged for his assistance and support during the sawing trials.
Appendix
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©2014 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
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- Meetings
- Meetings
Articles in the same Issue
- Frontmatter
- Original articles
- Enhancement of paper dry strength by carboxymethylated β-d-glucan from oat as additive
- Effect of fiber modification with 3-isopropenyl-dimethylbenzyl isocyanate (TMI) on the mechanical properties and water absorption of hemp-unsaturated polyester (UPE) composites
- Pulping-tailored fiber properties from a novel Brazilian Eucalyptus hybrid
- Mechanical performance of cellulose nanofibril film-wood flake laminate
- Variation of mechanical properties of single bamboo fibers (Dendrocalamus latiflorus Munro) with respect to age and location in culms
- Determination of the mechanical properties of radiata pine timber by means of longitudinal and transverse vibration methods
- A theoretical and experimental study of the circular sawing process
- Mathematical modeling of drying of Masson pine lumber and its asymmetrical moisture content profile
- Combined treatment of green pitch pine wood by heat and superheated steam and the effects on physical properties of the products
- Effect of mild torrefaction on pulverization of Norway spruce (Picea abies) by oscillatory ball milling: particle morphology and cellulose crystallinity
- Improved weathering performance and wettability of wood protected by CeO2 coating deposited onto the surface
- Impregnation of laser incised wood of Douglas fir and Japanese cedar by dipping (passive impregnation) in solutions of copper azole (CuAz-B) and a fire retardant (PPC)
- Short Notes
- Effect of initial moisture content on the anti-swelling efficiency of thermally modified Scots pine sapwood treated in a high-pressure reactor under saturated steam
- Comparison of antitermite properties of 2-thioxocoumarins against Coptotermes formosanus Shiraki
- Meetings
- Meetings
