Improving the Stability of Wood-Cutting Saws by Thermoplastic Action on the Distribution of Residual Stresses in the Blade

Complete text of the article:

Download article (pdf, 0.7MB )

UDС

621.365.5

DOI:

10.37482/0536-1036-2020-6-172-181

Abstract

The saw stability in operation defines the ability of the saw blade to resist the forces acting on it in the plane of greatest rigidity. The saw can work reliably only in case of maintaining stable balance, which is achieved through the creation of normalized residual stresses in certain zones of the saw blade by different methods. The stresses balance the forces of external influences. Compressive stresses are created in the central part of the blade to make the circular saw operational. These stresses compensate the forces of centrifugal acceleration, temperature heating of individual zones of the saw blade, external longitudinal and transverse bending forces arising in material processing. In practice, the creation of normalized stresses in the saw disk is traditionally carried out only by local mechanical contact action (forging, rolling) of the saw blade tool on the steel saw blade. It is proposed to form the stressed state of the disk by thermophysical action instead of the traditional mechanical processing of the saw blade. The thermophysical action involves the creation of normalized residual stresses in the saw blade by the concentrated thermal exposure to local differently directed narrow-band zones of straight or deflected shape, mainly radial or along concentric traces, controlling the process in real time. A new approach to the formation of residual stress fields in the saw blade by thermoplastic action enables to radically change the settingup procedure of the circular saw, ensuring its stability in operation.

Authors

V.I. Melekhov, Doctor of Engineering, Prof.; ResearcherID: Q-1051-2019, ORCID: https://orcid.org/0000-0002-2583-3012
I.I. Solovev, Candidate of Engineering; ORCID: https://orcid.org/0000-0002-2008-7073
T.V. Tyurikova, Candidate of Engineering, Assoc. Prof.; ResearcherID: P-8991-2019, ORCID: https://orcid.org/0000-0002-3592-310X
N.G. Ponomareva, Candidate of Engineering; ResearcherID: A-5693-2019, ORCID: https://orcid.org/0000-0001-6210-5631

Affiliation

Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; e-mail: v.melekhov@narfu.ru, i.solovev@narfu.ru, t.turikova@narfu.ru, n.ponomareva@narfu.ru

Keywords

thermoplastic stresses, circular saw, saw stability, high-speed heating

For citation

Melekhov V.I., Solovev I.I., Tyurikova T.V., Ponomareva N.G. Improving the Stability of Wood-Cutting Saws by Thermoplastic Action on the Distribution of Residual Stresses in the Blade. Lesnoy Zhurnal [Russian Forestry Journal], 2020, no. 6, pp. 172–181. DOI: 10.37482/0536-1036-2020-6-172-181

References

1. Birger I.A. Residual Stresses. Moscow, Mashgiz Publ., 1963. 232 p.
2. Bogatov A.A. Mechanical Properties and Fracture Models of Metals. Yekaterinburg, USTU Publ., 2002. 329 p.
3. Bogatov A.A. Residual Stresses and Fracture of Metal. Innovation Technologies in Metallurgy and Mechanical Engineering: Proceedings of the 6th International Youth Scientific and Practical Conference “Innovation Technologies in Metallurgy and Mechanical Engineering. Ural Scientific and Pedagogical School Named after Professor A.F. Golovin”. Yekaterinburg, URFU Publ., 2013, pp. 95–101.
4. Borovikov E.M., Orlov B.F. Thermal Method of Preparing Circular Saws for Work. Lesnoy Zhurnal [Russian Forestry Journal], 1974, no. 6, pp. 90–96. URL: http://lesnoizhurnal.ru/apxiv/1974/6.pdf
5. Borodin I.N., Mayer A.E., Petrov Yu.V., Gruzdkov A.A. Maximum Yield Strength under Quasi-Static and High-Speed Flow of Metals. Fizika tverdogo tela [Physics of the Solid State], 2014, vol. 56, iss. 12, pp. 2384–2393.
6. State Standard. GOST 5950-2000. Tool Alloy Steel Bars, Strips and Coils. General Specifications. Moscow, Izdatel’stvo standartov, 2003. 35 p.
7. Melekhov V.I., Soloviov I.I. Creation of Thermoplastic Tension in Circular Saw Blade. Lesnoy Zhurnal [Russian Forestry Journal], 2010, no. 2, pp. 87–90. URL: http://lesnoizhurnal.ru/upload/iblock/b08/b087c4466253da22ed3e19c778437576.pdf
8. Solov’ev I.I., Melekhov V.I. Device to Develop Thermoplastic Stresses in Saw Blade of Ring Saw. Patent RF no. RU 2434952 C1, 2011.
9. Melekhov V.I., Solovev I.I. Device for Creation of Thermoplastic Concentrated Stresses in Strip Saws. Patent RF no. RU 2614863 C1, 2017.
10. Solovev I.I., Melekhov V.I. Method of Thermoplastic Tensioning of the Round Saw Circular Saw Blade. Patent RF no. RU 2663029 C1, 2018.
11. Pozdeyev A.A., Nyashin Yu.I., Trusov P.V. Residual Stresses: Theory and Applications: Monograph. Moscow, Nauka Publ., 1982. 109 p.
12. Prokof’yev G.F. Creation of High-Tech Sawmills: Monograph. Arkhangelsk, Solti Publ., 2018. 157 p.
13. Slukhotskiy A.E., Nemkov V.S., Pavlov N.A., Bamuner A.V. Installations of Induction Heating. Ed. by A.E. Slukhotskiy. Leningrad, Energoatomizdat Publ., 1981. 328 p.
14. Solov’yev I.I. Improvement of Thermoplastic Technology for Setting-up Procedures of Circular Saws: Cand. Eng. Sci. Dis. Abs. Arkhangelsk, 2012. 18 p.
15. Stakhiyev Yu.M. Stability and Vibration of Flat Circular Saws. Moscow, Lesnaya promyshlennost’ Publ., 1977. 296 p.
16. Stakhiyev Yu.M. Scientific and Technological Bases of Production, Setting-up and Operation of Flat Circular Saws for Wood Sawing: Dr. Eng. Sci. Diss. Abs. Arkhangelsk, 2002. 32 p.
17. Akunin N.K. Setting-up of Circular Saws. Moscow, Lesnaya promyshlennost’ Publ., 1980. 153 p.
18. Bathe K.J. Finite Element Procedures in Engineering Analysis. New Jersey, Prentice Hall, 1982. 735 p.
19. Bayer R.G. Mechanical Wear Fundamentals and Testing. New York, CRC Press, 2004. 416 p.
20. Calladine C.R. Theory of Shell Structures. Cambridge, Cambridge University Press, 1983. 763 p. DOI: 10.1017/CBO9780511624278
21. Hughes T.J.R., Hinton E. Finite Element Methods for Plates and Shells: Elements Technology. Swansea, Pineridge Press, 1986, vol. 1. 315 p.
22. Meyers M.A., Chawla K.K. Mechanical Behavior of Materials. Cambridge, Cambridge University Press, 2009. 856 p.

Received on December 22, 2019