Influence of the Hardener Type on the Hardening Process Kinetics of the Selected Self-setting Sands

• Autorzy: Jamrozowicz Ł. , Kolczyk J. , Kaźnica N. , Pyziak Z.

Identyfikatory

DOI

10.1515/afe-2017-0013

• Języki publikacji: EN

Abstrakty

EN

Measurements of the hardening process of the selected self-setting sands are presented in the hereby paper. Moulding sands were prepared on the matrix of „Szczakowa” sand of the Sibelco Company. Two resins: phenol-formaldehyde-furfuryl (FF/AF) and urea-formaldehyde-furfuryl (MF/AF) were used for making moulding sands. – Methylbenzene-sulphonic acid was applied as a hardener for the moulding sand on FF/AF resin, while paratoluene-sulphonic acid for the moulding sand on MF/AF resin. Both hardeners were used in two concentrations: low – the so-called ‘slow’ hardener and high - ‘fast’ hardener. During investigations the courses of the hardening process were determined, more accurately changes of the velocity of the ultrasound wave passage through the moulding sand c_L = f(t) and changes of the moulding sand hardening degree versus time, Sx = f(t). In addition the kinetics of the hardening process was determined. Measurements were performed on the research stand for ultrasound investigations.

Słowa kluczowe

EN

loose self-setting sands; hardening kinetics; ultrasound investigations

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 1
• Strony: 73--78
• Opis fizyczny: Bibliogr. 15 poz., il., wykr.

Twórcy

autor

Jamrozowicz Ł.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

autor

Kolczyk J.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

autor

Kaźnica N.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

autor

Pyziak Z.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23, 30-059 Cracow, Poland

Bibliografia

• [1] Lewandowski, J.L. (1997). Materials for molds. Kraków: Wydawnictwo Akapit. (in Polish).
• [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 uses ultrasonic technique in the analysis of the kinetics of selected processes in the plastics molding. Kraków: Uczelniane Wydawnictwa Naukowo-Dydaktyczne. Seria: Rozprawy i Monografie nr 163. (in Polish).
• [5] Zych, J. (2001). The influence of temperature on the setting kinetics of moulding sands with chemical binders. Archives of Mechanical Technology and Automation. 21(1), 161-169.
• [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 techniques of ultrasonic testing of materials. 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. 58(1–2), 22–28.
• [9] Dańko, J. & Zych, J. (2002). Non-destructive test method for assessing uniformity cores compacting and determining the distribution strength and permeability. Archives of Foundry. 3(5), 132-139. (in Polish).
• [10] Jamrozowicz, Ł. & Zych, J. (2010). The moulds and cores made of fast setting moulding sands – determination of speed rate of front hardening transfer. 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). Manufacture of molds and cores using furan resins cold cure manual Hüttenes-Albertus. 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.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).