Effect of Thermal Nodes Reduction in Wall Connections of the Charge-Handling Furnace Grates on Thermal Stresses

• Autorzy: Bajwoluk Artur , Gutowski P.

Identyfikatory

DOI

10.24425/afe.2021.138665

• Języki publikacji: EN

Abstrakty

EN

The paper presents FEM approach for comparative analyses of wall connections applied in cast grates used for charge transport in furnaces for heat and thermal-chemical treatment. Nine variants of wall connection were compared in term of temperature differences arising during cooling process and stresses caused by the differences. The presented comparative methodology consists of two steps. In first, the calculations of heat flow during cooling in oil for analysed constructions were carried out. As a result the temperature distributions vs cooling time in cross-sections of analysed wall connections were determined. In the second step, based on heat flow analyses, calculations of stresses caused by the temperature gradient in the wall connections were performed. The conducted calculations were used to evaluate an impact of thermal nodes reduction on maximum temperature differences and to quantitative comparison of various base design of the cast grate wall connection in term of level of thermal stresses and their distribution during cooling process. The obtained results clearly show which solution of wall connection should be applied in cast grate used for charge transport in real constructions and which of them should be avoided because the risk of high thermal stresses forming during cooling process.

Słowa kluczowe

EN

cast grates; heat-resistant castings; heat treatment equipment; thermal stress analyses

PL

ruszty; odlewy żaroodporne; sprzęt do obróbki cieplnej; analiza naprężeń termicznych

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2021
• Tom: Vol. 21, iss. 3
• Strony: 53--58
• Opis fizyczny: Bibliogr. 10 poz., fot., rys., tab., wykr.

Twórcy

autor

Bajwoluk Artur

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

autor

Gutowski P.

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

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 Davis, J.R. (Eds.), ASM Specialty Handbook - Heat-Resistant Materials (pp. 67-85). ASM International.
• [3] Piekarski, B. (2012). Creep-resistant castings used in heat treatment furnaces. Szczecin: West Pomeranian University of Technology Publishing House. (in Polish).
• [4] 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.
• [5] Reihani, A., Razavi, S.A., Abbasi, E. et al. (2013). Failure Analysis of welded radiant tubes made of cast heat-resisting steel. Journal of failure Analysis and Prevention. 13, 658–665. DOI: https://doi.org/10.1007/s11668-013-9741-y.
• [6] 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.
• [7] Nandwana, D., et al. (2010). Design, Finite Element analysis and optimization of HRC trays used in heat treatment process. In World Congress on Engineering 2010, June 30 - July 2, 2010 (pp. 1149-1154). London, U.K.: Newswood Limited.
• [8] Sandeep, K., Ajit, K. & Mahesh, N.S. (2012). Improving productivity in a heat treatment shop for piston Pins. SASTECH Journal. 11(2), 38-46.
• [9] Standard PN-EN 10295: 2004. Heat resistant steel castings.
• [10] Bajwoluk, A. & Gutowski, P. (2019). Thermal stresses in the accessories of heat treatment furnaces vs cooling kinetics. Archives of Foundry Engineering. 19(3), 88-93, DOI: 10.24425/afe.2019.127146.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).