Effects of Heat Treatment on the Machining Properties of Eucalyptus urophylla×E. camaldulensis

Tu, Dengyun; Liao, Li; Hong, Yang; Zhou, Qiaofang; Cao, Xinlei; Huang, Jun

doi:10.15376/biores.9.2.2847-2855

Cited by 10 publications

(12 citation statements)

References 11 publications

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“…Many aspects of heat-treated wood, such as dimensional stability, durability, mechanical properties, equilibrium moisture content, mass loss, wettability, color change, chemical modifications, and others (Esteves and Pereira 2009) have been studied for various wood species. However, only limited studies have looked at wood machinability and the resulting wood quality (de Moura and Brito 2008;Budakci et al 2013;Tu et al 2014;Kubs et al 2016). Milling is one important operation that usually precedes sanding.…”

Section: Introductionmentioning

confidence: 99%

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

Ispas¹,

Gurău²,

Câmpean³

et al. 2016

BioResources

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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.

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Section: Introductionmentioning

confidence: 99%

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

Ispas¹,

Gurău²,

Câmpean³

et al. 2016

BioResources

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“…Scientific works have experimentally investigated the influence of technicaltechnological parameters on cutting power in the milling of natural and thermally modified wood (Barcik et al 2010;de Moura et al 2011;Barcík and Gašparík 2014;Tu et al 2014). Specifically mentioned trees are summer oak (Quercus robur L.), winter oak (Quercus petraea (Matt.)…”

Section: Introductionmentioning

confidence: 99%

Effect of technological parameters on energetic efficiency when planar milling heat-treated oak wood

Koleda

Barcík

Korčok

et al. 2020

BioRes

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Measuring the energy consumption and evaluating the efficiency of machining processes is necessary for their optimization and for implementation of cleaner production. The final product quality and the machining process of woodworking are of great interest. The properties of thermally modified wood make it more resistant to fungi, moulds, and ligniperdous insects than natural wood, so it is increasingly used in interior and exterior spaces. This study examined the energy demand of the milling of heat-treated oak wood (Quercus petraea) by ThermoWood® technology. The investigated technological parameters were thermal modification temperature (160 °C, 180 °C, 200 °C, and 220 °C), cutting speed (20 m × s-1, 40 m × s-1, and 60 m × s-1), feed rate (6 m × min-1, 10 m × min-1, and 15 m × min-1), and the material of the cutting tool. As the temperature of the thermal modification increased, the cutting power decreased due to a chemical degradation due to heating and reduced wood density. The lowest energy consumption was observed for the milling of wood treated at 220 °C with a cutting speed of 20 m × s-1, and a feed rate of 6 m × min-1.

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“…Higher numbers of excellent-surface-quality specimens after machining thermally modified wood, compared to controls for planing, sanding, boring and shaping, were recorded following visual assessment by [8]. It was also concluded that mortising was not noticeably influenced by the thermal modification process, while the surfaces of untreated samples after turning were considered smoother than of those of thermally modified samples.…”

Section: Introductionmentioning

confidence: 99%

Machinability of Minor Wooden Species before and after Modification with Thermo-Vacuum Technology

et al. 2017

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The influence of the thermal modification process on wood machinability was investigated with four minor species of low economic importance. A set of representative experimental samples was machined to the form of disks with sharp and dull tools. The resulting surface quality was visually evaluated by a team of experts according to the American standard procedure ASTM D-1666-87. The objective quantification of the surface quality was also done by means of a three dimensions (3D) surface scanner for the whole range of grain orientations. Visual assessment and 3D surface analysis showed a good agreement in terms of conclusions. The best quality of the wood surface was obtained when machining thermally modified samples. The positive effect of the material modification was apparent when cutting deodar cedar, black pine and black poplar in unfavorable conditions (i.e., against the grain). The difference was much smaller for an easy-machinability specie such as Italian alder. The use of dull tools resulted in the worst surface quality. Thermal modification has shown a very positive effect when machining with dull tools, leading to a relevant increment of the final surface smoothness.

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Effects of Heat Treatment on the Machining Properties of Eucalyptus urophylla×E. camaldulensis

Cited by 10 publications

References 11 publications

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

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

Effect of technological parameters on energetic efficiency when planar milling heat-treated oak wood

Machinability of Minor Wooden Species before and after Modification with Thermo-Vacuum Technology

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