Design Options to Decrease the Thermal Stresses in Cast Accessories for Heat and Chemical Treatment Furnaces

• Autorzy: Bajwoluk A. , Gutowski P.

Identyfikatory

DOI

10.24425/afe.2018.125181

• Języki publikacji: EN

Abstrakty

EN

By the very nature of their work, castings used in furnaces for heat treatment and thermo-chemical treatment are exposed to the effect of many unfavorable factors causing their deformation and cracking, significantly shortening the lifetime. The main source of damage are the micro-and macro-thermal stresses appearing in each cycle. As the cost of furnace instrumentation forms a significant part of the total furnace cost, in designing this type of tooling it is important to develop solutions that delay the damage formation process and thus extend the casting operation time. In this article, two structural modifications introduced to pallets castings to reduce thermal stresses arising at various stages of the cooling process are proposed. The essence of the first modification consists in making technological recesses in the wall connections, while the aim of the second one is to reduce the stiffness of the pallet by placing expanders in the external walls. Using the results of simulation analyses carried out by the finite element method, the impact of both proposed solutions on the level of thermal stresses was evaluated.

Słowa kluczowe

EN

information technology; foundry industry; cast grate; thermal stress; heat treatment equipment

PL

technologia informatyczna; przemysł odlewniczy; paleta odlewnicza; naprężenie termiczne; obróbka cieplna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 125--130
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Bajwoluk A.

• Mechanical Engineering Faculty, West Pomeranian University of Technology, al. Piastów 19, 70-310 Szczecin, Poland

autor

Gutowski P.

• Mechanical Engineering Faculty, West Pomeranian University of Technology, al. Piastów 19, 70-310 Szczecin, Poland

Bibliografia

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• [10] Rossini, N.S. et al. (2012). Methods of measuring residual stresses in components. Materials and Design. 35, 572-588, DOI: 10.1016/j.matdes.2011.08.022.
• [11] Senczyk, D. (1996) Residual stresses: introduction to generate, control and use. Poznan Univeristy of Technology Publishing House. (in Polish).
• [12] 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.
• [13] Bajwoluk, A. & Gutowski, P. (2015). The effect of pallet component geometry on temperature gradient during cooling. Archives of Foundry Engineering. 15(1), 5-8. DOI: 10.1515/ afe-2015-0001.
• [14] 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.
• [15] Standard EN 10295:2002. Heat resistant steel castings.

Uwagi

PL

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