The Effect of Reclaim Primary Quality on Moulding Sand Parameters and Quality of Ductile Iron Casting Surface Layer

• Autorzy: Kamińska Jadwiga , Angrecki M. , Puzio S. , Stachowicz M.

Identyfikatory

DOI

10.24425/afe.2022.140229

• Języki publikacji: EN

Abstrakty

EN

The aim of the research was to determine the effect of the primary quality of reclaim from dry mechanical reclamation on the strength properties and service life of moulding sands based on this reclaim. Another aim was to establish the effect of the quality of reclaim, sulphur content - in particular, on the surface quality and thickness of the deformed surface layer in ductile iron castings. The research has revealed differences in the strength parameters and service life (mouldability) of sands based on the tested reclaims, depending on the type of the furfuryl resin used, including resins whose synthesis was done as part of the Żywfur project. Examinations of the structure of the surface layer of test castings poured in moulds made of loose self-hardening sands containing the addition of reclaim have confirmed the occurrence of degenerated spheroidal graphite in this part of the casting. It should be noted here that when massive castings with a long solidification time are made, the graphite degeneration effect can be more visible and the layer with the changed structure can increase in thickness. The research has clearly shown that it is necessary to control the parameters of the reclaim, including sulphur content which is transferred from the hardener and accumulates on the grains. This phenomenon has a negative impact not only on the sand strength and technological properties but also on the surface layer of castings.

Słowa kluczowe

EN

foundry industry; furfuryl resin; reclaim; self-hardening moulding sand; surface quality; ductile iron

PL

przemysł odlewniczy; żywica furfurylowa; masa formierska; masa samoutwardzalna; jakość powierzchni; odlew z żeliwa sferoidalnego

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2022
• Tom: Vol. 22, iss. 2
• Strony: 83--88
• Opis fizyczny: Bibliogr. 20 poz., il., rys., tab., wykr.

Twórcy

autor

Kamińska Jadwiga

• Łukasiewicz Research Network – Krakow Institute of Technology, Poland

autor

Angrecki M.

• Łukasiewicz Research Network – Krakow Institute of Technology, Poland

autor

Puzio S.

• Łukasiewicz Research Network – Krakow Institute of Technology, Poland

autor

Stachowicz M.

• Wroclaw University of Technology, Faculty of Mechanical Engineering, Poland

Bibliografia

• [1] Lewandowski, J.L. (1997). Materials for foundry moulds. Kraków: WN Akapit. ISBN: 83-7108-21-2 (in Polish).
• [2] Kamińska, J., Puzio, S., Angrecki, M., Stachowicz, M. & Łoś, A. (2019). Preliminary tests of innovative eco-friendly furfuryl resins and foundry sand mixtures based on these resins. Journal of Ecological Engineering. 20(9), 285-292, DOI: 10.12911/22998993/112510.
• [3] Acharya, S.G., Vadher, J.A. & Kanjariya, P.V. (2016). Identification and quantification of gases releasing from furan no bake binder. Archives of Foundry Engineering. 16(3), 5-10. DOI: 10.1515/afe-2016-0039.
• [4] Chate, G.R., Patel, GC M., Deshpande, A.S. & Parappagoudar, M.B. (2018). Modeling and optimization of furan moulding sand system using design of experiments and particle swarm optimization. Journal of Process Mechanical Engineering. 232(5), 1-20. DOI:10.1177/0954408917728636.
• [5] Sappinen, T., Orkas, J. & Konqvist, T. (2018). Thermal Reclamation of Foundry Sands Using Repurposed Sand Dryer Equipment. Archives of Foundry Engineering. 18(4), 99-102. DOI: 10.24425/afe.2018.125176.
• [6] Kamińska, J., Puzio, S., Angrecki, M. & Łoś, A. (2020). Effect of reclaim addition on the mechanical and technological properties of moulding sands based on proecological furfuryl resin. Archives of Metallurgy and Materials. 65(4), 1425-1429. DOI:10.24425/amm.2020.133709.
• [7] Yan-lei, L., Guo-hua, W., Wen-cai, L., An-tao, C., Liang, Z. & Ying-xin Wang, W. (2017). Effect of reclaimed sand additions on mechanical properties and fracture behavior of furan no-bake resin sand. China Foundry. 14(2), 128-137. DOI:10.1007/s41230-017-6024-3.
• [8] Holtzer, M., Dańko, R., Kmita, A., Drożyński, D., Kubecki, M., Skrzyński, M. & Roczniak, A. (2020). Environmental impact of the reclaimed sand addition to moulding sand with furan and phenol-formaldehyde resin-A comparison, Materials. 13(19), 4395; DOI:https://doi.org/10.3390/ma13194395.
• [9] Holtzer, M., Dańko, R. & Kmita, A. (2016). Influence of a reclaimed sand addition to moulding sand with furan resin on its impact on the environment. Water Air and Soil Pollution. 227(16), 1-12. DOI: 10.1007/s11270-015-2707-9.
• [10] Hosadyna, M. (2012). The effect of sulphur contained in self-hardening moulding sands on the structure of surface layer in ductile iron castings. Doctoral dissertation, Kraków. (in Polish).
• [11] Holtzer, M., Zych, J. & Retel, K. (1996). The effect of mould-liquid cast iron interaction on the surface quality of castings. Przegląd Odlewnictwa. 6(1996), 129-134. (in Polish).
• [12] Riposan, I., Chisamera, M., Stan, S., Skaland, T. (2008). Surface graphite degeneration in ductile iron castings for resin molds. Tsinghua Science and Technology. 13(2), 157-163.
• [13] Linke, T., Sluis, J.R. (1993). The influence of coatings on the graphite structure in the rimzone of ductile iron castings. 60th World Foundry Congress, The Netherlands.
• [14] Hosadyna, M., Dobosz, St.M. & Jelinek, P. (2009). The diffusion of sulphur from moulding sand to cast and methods of its elimination. Archives of Foundry Engineering. 9(4), 73-76.
• [15] Sheladiya, M.V., Acharya, S.G., Mehta, K., Acharya, G.D. (2019). Evaluate sulphur diffusion at mould-metal interface in no-bake mould system. Archives of Foundry Engineering.19(1), 63-70. DOI: 10.24425/afe.2018.125193.
• [16] Anca, D., Stan, I., Chisamera, M., Riposan, I. & Stan, S. (2021). Experimental study regarding the possibility of blocking the diffusion of sulfur at casting-mold interface in ductile iron castings. Coatings. 11(673), 1-10. DOI: https://doi.org/10.3390/coatings11060673.
• [17] Dańko, J., Dańko, R. & Łucarz, M. (2007). Processes and devices for the matrix regeneration of spent molding sands. Kraków: WN Akapit. ISBN: 978,83-89541-88-8 (in Polish).
• [18] Holtzer, M., Bobrowski, A., Drożyński, D., Isendorf, B., Mazur, (2012). Influence of the reclaim on the properties of moulding sands with furfuryl resin applied for moulds for manganese steel castings. Archives of Foundry Engineering. 12(1), 57-62.
• [19] Dańko, R., Górny, M., Holtzer, M., Żymankowska-Kumon, S. (2014). Effect of the quality of furan moulding sand on the skin layer of ductile iron castings. ISIJ International. 54(6), 1288-1293. DOI:https://doi.org/10.2355/isijinternational.54.1288.
• [20] Pałyga, Ł., Stachowicz, M., Granat, K. (2015). Evaluation of 2D and 3D surface roughness of die castings from alloy AlSi9Cu3. Archives of Foundry Engineering. 15(1), 75-80.