Determination of surface roughness parameters of heat-treated and untreated scotch pine, oak and beech woods

Heat treatment is an industrial application that changes the physical, mechanical and chemical properties of wood. In addition, the smell, color and surface roughness of the heat treated wood also varies. The objective of this study is to investigate surface roughness properties (Ra, Rz and Rq) of heat treatment and untreated some wood types. In this study, wood specimens prepared from Scotch pine (Pinus sylvestris L.), oak (Quercus petreae L.) and beech (Fagus orientalis L.) wood species were heat-treated according to ThermoWood？ method at 212oC for 1 hour and 2 hours in Bolu - Gerede, Turkey. Caliber sanding machine with 180 grinding were applied untreated and heat-treated specimens after heat treatment. Surface roughness parameters (Ra, Rz and Rq) according to ISO 4287 (1997) standard were determined for all samples. According to obtained data, it was observed that the Ra, Rz and Rq parameters decreased when the heat treatment time increased. It was determined that the surface roughness of all wood materials was changed by the applied heat treatment process