The Influence of Birch False Heartwood on the Volume Yield of Lamellae from the Sapwood Zone for Board Panel Production

Complete text of the article:

Download article (pdf, 0.9MB )

UDС

674.093

DOI:

10.17238/issn0536- 1036.2019.6.202

Abstract

In years ahead, the share of deciduous species (birch and aspen) in the annual allowable cut of the European part of the Russian Federation and the Ural will reach 80 %, thus, an increase in the use of hardwood is meant to be one of the strategic processing areas. Birch lumber has limited demand in construction and furniture production; in this regard, the proportion of round birch assortments intended for the lumber production is about 14 % with an average diameter of assortments no greater than 18 cm. There are zones of false heartwood and sapwood in round birch timber, intended for the lumber production. There is a steady trend in demand for the board panels obtained from the sapwood zone, which might bring a vast improvement to the technical and economic performance of production. The size of the sapwood zone reduces in processing of unedged into edged lumber and depends on the utilization of the taper zone. The increase in the volume yield of lamellae from the sapwood zone can be obtained by using lumber with wane since the width of the board increases and hence the sapwood zone. Computer simulation of birch central boards cutting on free width lamellae and 40 mm width lamellae made of the sapwood zone has shown that the volume yield from logs with a diameter of 14 cm of free width lamellae in the central boards of the sapwood zone does not increase in comparison with the volume yield of 40 mm width lamellaе. However with an increase in the log diameter, the volume yield of free width lamellae made of sapwood zone in the central boards increases. For example, the volume yield from logs with a diameter of 16 cm increases by 0.53 %, from 18 cm – by 1.25 %, from 20 cm – by 1.71 % of the log volume.

Authors

S.N. Rykunin, Doctor of Engineering, Assoc. Prof.; ResearcherID: N-3182-2013, ORCID: 0000-0002-4471-4668
A.A. Kaptelkin, Postgraduate Student; ResearcherID: AAC-8654-2019, ORCID: 0000-0002-8470-3496

Affiliation

Bauman Moscow State Technical University (Mytishchi Branch), ul. 1-ya Institutskaya, 1, Mytishchi, Moscow region, 141005, Russian Federation; e-mail: rikunin@mgul.ac.ru, kaptelkin94@mail.ru

Keywords

false heartwood, birch, board panel, lamella, sapwood zone

For citation

Rykunin S.N., Kaptelkin А.А. The Influence of Birch False Heartwood on the Volume Yield of Lamellae from the Sapwood Zone for Board Panel Production. Lesnoy Zhurnal [Russian Forestry Journal], 2019, no. 6, pp. 202–212. DOI: 10.17238/issn0536- 1036.2019.6.202

References

1. Aksenov P.P. Theoretical Basis for Raw Material Sawing. Moscow, Goslesbumizdat Publ., 1960. 216 p.
2. Alekseyeva L.G. The Nature and Economic Importance of Birch False Heartwood. Collection of Academic Papers of the Moscow Forestry Engineering Institute. Moscow, MLTI Publ., 1957, no. 1, pp. 65–71.
3. Kaptelkin A.A., Vladimirova E.G. Evaluation of the Quality of Sawn Timber by Means of Simulation in the SolidWorks Program. Derevoobrabativaushaya promishlennost’ [Woodworking industry], 2019, no. 1, pp. 3–7.
4. Kaptelkin A.A., Кulikova N.V., Rykunin S.N. Production Technology of Birch Lumber with a Wane for a Single-Edge Furniture Board. Derevoobrabativaushaya promishlennost’ [Woodworking industry], 2017, no. 4, pp. 21–27.
5. Kaptelkin A.A., Rykunin S.N. Production Technology of Lamellae for Board Panels made of Birch Lumber with a Wane. Derevoobrabativaushaya promishlennost’ [Woodworking industry], 2018, no. 3, pp. 8–11.
6. [Kravtsov E.V. Study of Size-Quality Features Birch Timber. Vestnik Moskovskogo gosudarstvennogo universiteta lesa – Lesnoy Vestnik [Forestry Bulletin], 2012, no. 8(91), pp. 90–94.
7. Kondratyuk D.V., Kravtsov E.V. Technology Solutions Hardwood Treatment Short Assortment. Vestnik Moskovskogo gosudarstvennogo universiteta lesa – Lesnoy Vestnik [Forestry Bulletin], 2012, no. 8(91), pp. 38–41.
8. Кulikova N.V., Rykunin S.N., Krivoschokov N.V. The Calculation Method of Supply with the Given Wane Value. Lesotekhnicheskiy zhurnal [Forestry Engineering Journal], 2016, no. 3(23), pp. 91–99.
9. Rykunin S.N. Study of the Influence of Qualitative Features of Birch Sawing Raw Materials on the Output of Blanks and Their Production Technology: Cand. Eng. Sci. Diss. Abs. Moscow, 1968. 31 p.
10. Tepnadze M., Mirotadze L., Litkin D. Some Research Results of Flaws in Beech Wood. Tekhnіka ta energetika [Machinery and Energetics], 2013, no. 185, pp. 282–289.
11. Ulasovets V.G. Sawing of Side Log Zone into Boards of Similar Thickness. Lesnoy Zhurnal [Forestry Journal], 2008, no. 5, pp. 77–82. URL: http://lesnoizhurnal.ru/upload/iblock/397/397bea88c8553eabfc70b73cf34576f4.pdf
12. Fergin V.R. Development of the Sawing Process Theory. Lesnoy Zhurnal [Forestry Journal], 2018, no. 4, pp. 107–117. DOI: 10.17238/issn0536-1036.2018.4.107; URL: http://lesnoizhurnal.ru/upload/iblock/f0d/107_117.pdf
13. Bankole O.S., Rohumaa A., Kers J. Microstructure Study if Birch False Heartwood. Proceedings of the 12th Meeting of the Northern European Network for Wood Science and Engineering (WSE). Wood Science and Engineering – A Key Factor on the Transition to Bioeconomy. Riga, Latvian State Institute of Wood Chemistry, 2016, pp. 117–124.
14. Dömény J., Koiš V., Dejmal A. Microwave Radiation Effect on Axial Fluid Permeability in False Heartwood of Beech (Fagus sylvatica L.). BioResources, 2014, vol. 9, iss. 1, pp. 372–380. DOI: 10.15376/biores.9.1.372-380
15. Hörnfeldt R., Drouin M., Woxblom L. False Heartwood in Beech Fagus sylvatica, Birch Betula pendula, B. papyrifera and Ash Fraxinus excelsior – An Overview. Ecological Bulletins, 2010, no. 53, pp. 61–76.
16. Kallakas H., Ayansola G.S., Tumanov T., Goljandin D., Poltimäe T., Krumme A., Kers J. Influence of Birch False Heartwood on the Physical and Mechanical Properties of Wood-Plastic Composites. BioResources, 2019, vol. 14(2), pp. 3554–3566. DOI: 10.15376/biores.14.2.3554-3566
17. Luostarinen K. The Effect of Annual Ring Orientation and Drying Method on Deformations, Casehardening and Colour of Silver Birch (Betula pendula) Boards. Silva Fennica, 2007, vol. 41, no. 4, art. 278, pp. 717–730. DOI: 10.14214/sf.278
18. Martin M. Effect of Birch Heartwood on the Physical and Mechanical Properties of Wood-Plastic Composites. BioResources, 2017, vol. 9, iss. 1, pp. 75–85.
19. Prka M., Zečić Ž., Krpan A., Vusić D. Characteristics and Share of European Beech False Heartwood in Felling Sites of Central Croatia. Croatian Journal of Forest Engineering, 2009, vol. 30, pp. 37–49.
20. Shmulsky R., Jones P.D. Forest Products and Wood Science: An Introduction. Chichester, Wiley-Blackwell, 2019. 504 p.