Milling of Heat-Treated Beech Wood (Fagus sylvatica L.) and Analysis of Surface Quality

Abstract

Several previous studies have investigated the effects of heat treatment on the chemical composition, along with the physical and mechanical properties, of wood from various species. However, the effects of these property changes upon the machining properties and surface quality of machined wood have been studied much less. The main goal of this work was to investigate the comparative cutting power consumption during milling and the resulting surface roughness of heat-treated and untreated beech wood (Fagus sylvatica L.). Several cutting regimes were tested by combining different values of rotation speed, feed speed, and cutting depth. The cutting power and the processing roughness were assessed and compared. The results clearly showed that the cutting power involved in the milling of heat-treated beech wood was up to 50% lower than that of untreated wood, but the processing roughness was slightly higher.

Comparison of Surface Quality and Tool-Life of Glulam Window Elements after Planing

“…Findings of the experiments by Škaljić et al (2009) revealed that roughness Ra of thermally modifi ed beech-wood was very close to the same values of steamed beech-wood samples. However, the surface roughness of heat-treated beech processed by milling was slightly higher than that of untreated wood (as measured by Ra, Rq, Rt, Rk, and Rk+Rpk+Rvk) (Ispas et al, 2016). The latter fi ndings were confi rmed by Hacibektasoglu et al (2017), who revealed that heattreating beech (Fagus sylvatica L.) for 1 h and 2 h had a negligible effect on the processing roughness after planning, measured across the grain by Rk.…”

Development of an Artificial Neural Network Model to Minimize Power Consumption in the Milling of Heat-Treated and Untreated Wood

“…The data used in this study were taken from Ispas et al (2016). Namely, the present study does not conduct the experiments for determining the influences of treatment, rotation speed, cutting depth, and feed rate on power consumption in the wood milling process.…”

“…Namely, the present study does not conduct the experiments for determining the influences of treatment, rotation speed, cutting depth, and feed rate on power consumption in the wood milling process. Instead, it aims at predicting the influences of the aforementioned variables on power consumption using the data obtained from the experimental results of Ispas et al (2016). Some experimental details were explained below.…”

“…In the present study, the effects of treatment, rotation speed, cutting depth, and feed rate on power consumption in the wood milling process were modeled via ANNs. The data (60 samples) were obtained from the experimental results of Ispas et al (2016). The codes required for the ANN analysis were written in MATLAB.…”

“…The power consumption, often referred as the cutting power, represents the mechanical work at processing released per second (Ispas, Gurau, Campean, Hacibektasoglu & Racasan, 2016). Reducing power consumption in wood machining increases energy efficiency and reduces operating costs.…”