Thermal Stresses in the Accessories of Heat Treatment Furnaces vs Cooling Kinetics

• Autorzy: Bajwoluk A. , Gutowski P.

Identyfikatory

DOI

10.24425/afe.2019.127146

• Języki publikacji: EN

Abstrakty

EN

Depending on the course of the processes of heat treatment and thermo-chemical treatment, the technological equipment of heat treatment furnaces is exposed to different operating conditions, as the said processes differ among themselves in the temperature of annealing and atmosphere prevailing in the furnace chamber, in the duration of a single work cycle and in the type and temperature of the coolant. These differences affect the magnitude of stresses occurring in each cycle of the operation of furnace accessories, and thus play an important role in fatigue processes leading to the destruction of these accessories. The kinetics of temperature changes during each cooling process plays an important role in the formation of thermal stresses on the cross-section of the cooled parts. It depends on many factors, including the initial cooling temperature, the type and temperature of the cooling medium, or the dimensions and shape of the object. This article presents a numerical analysis of the effect of the initial temperature on the distribution of stresses on the cross-section of the grate ribs, generated in the first few seconds of the cooling process carried out in two cooling media, i.e. hardening oil and water. The analysis was carried out by the finite element method, based on the results of experimental testes of temperature changes in the rib during its cooling.

Słowa kluczowe

EN

foundry industry; application of information technology; information technology; grates; thermal stresses; heat treatment equipment

PL

przemysł odlewniczy; zastosowanie technologii informatycznej; technologia informatyczna; ruszty; naprężenia termiczne; sprzęt do obróbki cieplnej

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 3
• Strony: 88--93
• Opis fizyczny: Bibliogr. 20 poz., fot., rys., wykr.

Twórcy

autor

Bajwoluk A.

• West Pomeranian University of Technology, Mechanical Engineering Faculty, Szczecin, Poland

autor

Gutowski P.

• West Pomeranian University of Technology, Mechanical Engineering Faculty, Szczecin, Poland

Bibliografia

• [1] Lai, G.Y. (2007). High-Temperature Corrosion and Materials Applications. ASM International.
• [2] Davis, J.R. (Ed.). (1997). Industrial Applications of Heat-Resistant Materials. In Heat Resistant Materials. ASM International.
• [3] Ul-Hamid, et al. (2006). Failure analysis of furnace tubes exposed to excessive temperature. Engineering Failure Analysis. 13(6), 1005-1021. DOI: 10.1016/j.engfailanal. 2005.04.003.
• [4] Reihani, Ali. et al.(2013). Failure analysis of welded radiant tubes made of cast heat-resisting steel. Journal of failure Analysis and Prevention. 13(6). DOI: 10.1007/s11668-013-9741-y.
• [5] Piekarski, B. (2010). Damage of heat-resistant castings in a carburizing furnace. Engineering Failure Analysis. 17(1), 143-149. DOI: 10.1016/j.engfailanal.2009.04.011.
• [6] Piekarski, B. (2012). Creep-resistant castings used in heat treatment furnaces. Szczecin: West Pomeranian University of Technology Publishing House. (in Polish).
• [7] Nandwana, D., et al. (2010). Design, Finite Element analysis and optimization of HRC trays used in heat treatment process. Proceedings of the World Congress on Engineering WCE 2010. II, 1149-1154.
• [8] Bajwoluk, A. & Gutowski, P. (2016). Thermal Stresses in the Wall Connections of Cast Grate Structures. Archives of Foundry Engineering. 16(4), 11-16. DOI: 10.1515/afe-2016-0075.
• [9] Bajwoluk, A. & Gutowski, P. (2017) The effect of cooling agent on Stress and Deformation of Charge-loaded Cast Pallets. Archives of Foundry Engineering. 17(4), 13-18. DOI: 10.1515/afe-2017-0123.
• [10] Bajwoluk, A. & Gutowski, P. (2019). Stress and crack propagation in the surface layer of carburized stable austenitic alloys during cooling. Materials at High Temperatures. DOI: 10.1080/09603409.2018.1448528.
• [11] Bajwoluk, et. al. (2018) Supressing the basket deformation process during heat treatment. Proceeding of 73rd World Foundry Congress. Young Researcher`s Seminar (pp.109-110).
• [12] Totten, G.E. (2006). Steel Heat Treatment. London: Taylor and Francis Group.
• [13] Dossett, J.L., Boyer H.E. (2006). Practical Heat Treating. ASM International, 2nd ed.
• [14] Lo, K.H. et al. (2009). Recent developments in stainless steels. Materials Science and Engineering R. 65, 39-104.
• [15] Drotlew, A. et al. (2013). Structure of guide grate in heat treatment technological equipment. Transactions of foundry research institute. 53(3), 59-71. DOI: 10.7356/iod.2013.16.
• [16] Drotlew, A., Piekarski, B. & Słowik, J. (2017) The design of cast Technological Equipment for Heat Treatment Furnaces. Archives of Foundry Engineering. 17(3), 31-36.
• [17] Standard EN 10295:2002. Heat resistant steel castings.
• [18] Luty, W. (1986). Quenching cooling agents. Warszawa: Science-Technical Publishers (in Polish).
• [19] Petela, R. (1983). Heat flow. Warszawa: Polish Scientific Publishers, (in Polish).
• [20] Hasan, H.S. et al. (2011) Heat transfer coefficient during quenching of steels. Heat Mass Transfer. 47, 315-321. DOI: 10.1007/s00231-010-0721-4.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).