Influence of the Reclaim Addition into the Matrix on the Hardening Process Kinetics of the Moulding Sand with Furfuryl Resin

• Autorzy: Jamrozowicz Ł. , Kolczyk J. , Wojtuń P.

Identyfikatory

DOI

10.24425/118809

• Języki publikacji: EN

Abstrakty

EN

Measurements of the hardening process course of the selected self-hardening moulding sands with the reclaimed material additions to the matrix, are presented in the hereby paper. Moulding sands were produced on the „Szczakowa” sand (of the Sibelco Company) as the matrix of the main fraction FG 0,40/0,32/0,20, while the reclaim was added to it in amounts of 20, 50 and 70%. Regeneration was performed with a horizontal mechanical regenerator capacity of 10 t/h. In addition, two moulding sands, one on the fresh sand matrix another on the reclaimed matrix, were prepared for comparison. Highly-fluid urea-furfuryl resin was used as a binder, while paratoluensulphonic acid as a hardener. During investigations the hardening process course was determined, it means the wave velocity change in time: cL = f(t). The hardening process kinetics was also assessed (dClx/dt = f(t)). Investigations were carried out on the research stand for ultrasound tests. In addition strength tests were performed.

Słowa kluczowe

EN

moulding sand; reclaim addition; hardening process; furfuryl resin

PL

masa formierska; dodatki; utwardzanie; żywica furfurylowa

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 1
• Strony: 41--46
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Jamrozowicz Ł.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Cracow, Poland

autor

Kolczyk J.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Cracow, Poland

autor

Wojtuń P.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Cracow, Poland,

Bibliografia

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• [2] Staronka, A. (1994). Physical chemistry. Kraków: Wydawnictwa AGH. (in Polish).
• [3] Zych, J. (2002). The setting kinetic of moulding sands with water glass. Acta Metallurgica Slovaca. 8(2), 93-98.
• [4] Zych, J. (2007). Synthesis of ultrasound technology applications in kinetics analysis of selected processes occurring in molding materials. Cracow: Uczelniane Wydawnictwa Naukowo-Dydaktyczne. Seria: Rozprawy i Monografie nr 163. (in Polish).
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• [6] Zych, J. (2002). The new non-destructive method of the control of the quality of the elements of forms executed from moulding sand with chemical binder. Archives of Foundry 3(5), 132-139 (in Polish).
• [7] Deputat. J. (1996). New ultrasonic materials testing techniques. Solidification of Metals and Alloys. 26, 101-110. (in Polish).
• [8] Zych, J. (2007). Das Verhalten chemisch gebundener Formstoffe unter wechselnden Umgebungsbedingungen — [Behaviour of moulding sand with chemical binders in changeable weathers conditions]. Giessereipraxis. Jg. 58 H. 1-2, 22-28.
• [9] Dańko, J. & Zych, J. (2002). Non-destructive testing of cores for the assessment of evenness of mass densities and determination of strength distribution and permeability. Archives of Foundry. 3(5), 132-139. (in Polish).
• [10] Jamrozowicz, Ł. & Zych, J. (2010). Forms and cores of rapid-setting masses - Determining the speed of movement of the hardening front. Archives of Foundry Engineering. 10(spec.2), 173-176. (in Polish).
• [11] Jamrozowicz, Ł. & Zych, J. (2010). Advancement of the hardening front in forms and cores made of quickly bonding composites - ultrasonic analyses. Archives of Metallurgy and Materials. 55(3), 963-968.
• [12] Jamrozowicz, Ł. & Zych, J. (2011). The change of the gas pressure in cores made in cold-box technology during their hardening. Archives of Foundry Engineering. 11(4), 204-208.
• [13] Bieda, S. (2006). Production of molds and cores using Hüttenes-Albertus cold hardened resin resins. Przegląd Odlewnictwa. 7-8, 324-329. (in Polish).
• [14] Zych, J. (2003). Novo método ultra-sonico de monitoração do processo de cura — [The novel ultrasonic mothod of monitoring the setting process of moulding sands with chemical binders]. Fundição e Serviços. 14(128), 146-156.
• [15] Zych, J. (2000). Prüfen von kunstharz- und wasser-glasgebundenen Formsanden mit der Ultraschallmethode — [Ultrasonic testing of moulding sands with resins and water-glass]. Giesserei-Erfahrungsaustausch. 4, 193-196.
• [16] Bushby, A.D. (1994). The disposal of used foundry sand – future prospects. The Foundryman. p. 68.
• [17] Dańko, J, Dańko, R., Łucarz, M. (2007). Processes and devices for regeneration of worn molded matrix. Cracow: Wydawnictwo Naukowe AKAPIT. (in Polish).

Uwagi

PL

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