Mica based coating for application in lost foam casting process
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Prstić, AurelAcimović-Pavlović, Zagorka
Andrić, Ljubiša
Grujić, Snežana

Tumbulović, Ljiljana
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This paper presents the results of mechanical activation of filler based on mica and the influence on the quality of foundry coatings. The coating was applied for lining of evaporable model in Lost foam casting process. The examinations of synthesis, characterization and application of refractory coatings showed that sediment stability of coating suspension was crucial quality parameter. Coating composition optimization with the controlled reologic properties was achieved by applying different coating components and by alteration of coating production procedure. For the assessment of possibilities of using mica as refractory fillers the comparative test were done with the coating on the basis of talk Ceramic powders talk and mica were, first, grind down in the so-called fine fractions, and then used as a heat-resisting fillers. The talc and mica samples were tested by the following methods.: Xray diffraction analysis, diffraction thermal analysis and qualitative mineralogical analysis ...on scanning electronic micrpscope. The shape and grain size were analyzed by the program package OZARIA 2.5. For assessing the quality of the coatings and the effects of their application detailed analysis of structural and mechanical properties of the castings were done. Also, the radiographic examination of castings on the type of x-ray device SAIFORT-S200 was done. Application of refractory coatings on the basis of talk and mica showed a positive influence on the structural and mechanical properties of castings of aluminum-silicon alloys.
Keywords:
refractory coatings / talc / mica / Lost Foam Casting process / the quality of castings / aluminum alloysSource:
Metalurgia International, 2012, 17, 7, 90-96Publisher:
- Editura Stiintifica Fmr, Bucharest
Funding / projects:
- Serbian Ministry of Science and Education, Republic of Serbia
- The development of casting technologies under the influence of electromagnetic field and technologies of hot plastic forming of 7000 series aluminium alloys for special purposes (RS-34002)
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Prstić, Aurel AU - Acimović-Pavlović, Zagorka AU - Andrić, Ljubiša AU - Grujić, Snežana AU - Tumbulović, Ljiljana PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2005 AB - This paper presents the results of mechanical activation of filler based on mica and the influence on the quality of foundry coatings. The coating was applied for lining of evaporable model in Lost foam casting process. The examinations of synthesis, characterization and application of refractory coatings showed that sediment stability of coating suspension was crucial quality parameter. Coating composition optimization with the controlled reologic properties was achieved by applying different coating components and by alteration of coating production procedure. For the assessment of possibilities of using mica as refractory fillers the comparative test were done with the coating on the basis of talk Ceramic powders talk and mica were, first, grind down in the so-called fine fractions, and then used as a heat-resisting fillers. The talc and mica samples were tested by the following methods.: Xray diffraction analysis, diffraction thermal analysis and qualitative mineralogical analysis on scanning electronic micrpscope. The shape and grain size were analyzed by the program package OZARIA 2.5. For assessing the quality of the coatings and the effects of their application detailed analysis of structural and mechanical properties of the castings were done. Also, the radiographic examination of castings on the type of x-ray device SAIFORT-S200 was done. Application of refractory coatings on the basis of talk and mica showed a positive influence on the structural and mechanical properties of castings of aluminum-silicon alloys. PB - Editura Stiintifica Fmr, Bucharest T2 - Metalurgia International T1 - Mica based coating for application in lost foam casting process EP - 96 IS - 7 SP - 90 VL - 17 UR - https://hdl.handle.net/21.15107/rcub_technorep_2005 ER -
@article{ author = "Prstić, Aurel and Acimović-Pavlović, Zagorka and Andrić, Ljubiša and Grujić, Snežana and Tumbulović, Ljiljana", year = "2012", abstract = "This paper presents the results of mechanical activation of filler based on mica and the influence on the quality of foundry coatings. The coating was applied for lining of evaporable model in Lost foam casting process. The examinations of synthesis, characterization and application of refractory coatings showed that sediment stability of coating suspension was crucial quality parameter. Coating composition optimization with the controlled reologic properties was achieved by applying different coating components and by alteration of coating production procedure. For the assessment of possibilities of using mica as refractory fillers the comparative test were done with the coating on the basis of talk Ceramic powders talk and mica were, first, grind down in the so-called fine fractions, and then used as a heat-resisting fillers. The talc and mica samples were tested by the following methods.: Xray diffraction analysis, diffraction thermal analysis and qualitative mineralogical analysis on scanning electronic micrpscope. The shape and grain size were analyzed by the program package OZARIA 2.5. For assessing the quality of the coatings and the effects of their application detailed analysis of structural and mechanical properties of the castings were done. Also, the radiographic examination of castings on the type of x-ray device SAIFORT-S200 was done. Application of refractory coatings on the basis of talk and mica showed a positive influence on the structural and mechanical properties of castings of aluminum-silicon alloys.", publisher = "Editura Stiintifica Fmr, Bucharest", journal = "Metalurgia International", title = "Mica based coating for application in lost foam casting process", pages = "96-90", number = "7", volume = "17", url = "https://hdl.handle.net/21.15107/rcub_technorep_2005" }
Prstić, A., Acimović-Pavlović, Z., Andrić, L., Grujić, S.,& Tumbulović, L.. (2012). Mica based coating for application in lost foam casting process. in Metalurgia International Editura Stiintifica Fmr, Bucharest., 17(7), 90-96. https://hdl.handle.net/21.15107/rcub_technorep_2005
Prstić A, Acimović-Pavlović Z, Andrić L, Grujić S, Tumbulović L. Mica based coating for application in lost foam casting process. in Metalurgia International. 2012;17(7):90-96. https://hdl.handle.net/21.15107/rcub_technorep_2005 .
Prstić, Aurel, Acimović-Pavlović, Zagorka, Andrić, Ljubiša, Grujić, Snežana, Tumbulović, Ljiljana, "Mica based coating for application in lost foam casting process" in Metalurgia International, 17, no. 7 (2012):90-96, https://hdl.handle.net/21.15107/rcub_technorep_2005 .