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Foundry molding mixtures with biopolymer binders
Šindlerová, Eliška ; Janský, Vojtěch (referee) ; Pernica, Vítězslav (advisor)
This work is interested in a new modern solutions in the field of foundry binders. Several biopolymer materials suitable for foundry industry are described and the conditions for using these materials and few examples of casting tests with the use of the biopolymer binders. The main reason why the biopolymer materials are coming back to the industry is a huge amount of strict environmental requirements for the ecological behavior of industrial enterprises and current very bad ecological situation. However this inovative solutions doesn´t have to be only benefits for our environment but the can bring various simplifications to the production process, shortening the time required for preparation or technological breaks, and lower the costs of input material and subsequent waste treatment.
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Change in costs and ecology of production of self-hardening molding mixtures in the production of spheroidal graphite iron
Šindlerová, Eliška ; Vondráček, Radek (referee) ; Záděra, Antonín (advisor)
This master thesis is focused on the study of the properties of core mixtures. The core mixtures are prepared from organic binders and processed by cold-box / amine technology. The mixtures are prepared of 3 different organic binder systems from 2 manufacturers. The evaluation is performed in terms of their flexural strength at specified time intervals and the results are compared with the specified strength criteria. Furthermore, the effect of water coating on the flexural strength of those core mixtures that met all the strength criteria in the first experiment is investigated. In the last experimental part of the work, the mixtures are evaluated in terms of their environmental friendliness. DSC / TG analysis is used to investigate whether any substances are released when the core mixture samples are heated. Subsequently, the mixtures were subjected to GC-MS analysis in order to identify the substances released.
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Change in costs and ecology of production of self-hardening molding mixtures in the production of spheroidal graphite iron
Šindlerová, Eliška ; Vondráček, Radek (referee) ; Záděra, Antonín (advisor)
This master thesis is focused on the study of the properties of core mixtures. The core mixtures are prepared from organic binders and processed by cold-box / amine technology. The mixtures are prepared of 3 different organic binder systems from 2 manufacturers. The evaluation is performed in terms of their flexural strength at specified time intervals and the results are compared with the specified strength criteria. Furthermore, the effect of water coating on the flexural strength of those core mixtures that met all the strength criteria in the first experiment is investigated. In the last experimental part of the work, the mixtures are evaluated in terms of their environmental friendliness. DSC / TG analysis is used to investigate whether any substances are released when the core mixture samples are heated. Subsequently, the mixtures were subjected to GC-MS analysis in order to identify the substances released.
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Foundry molding mixtures with biopolymer binders
Šindlerová, Eliška ; Janský, Vojtěch (referee) ; Pernica, Vítězslav (advisor)
This work is interested in a new modern solutions in the field of foundry binders. Several biopolymer materials suitable for foundry industry are described and the conditions for using these materials and few examples of casting tests with the use of the biopolymer binders. The main reason why the biopolymer materials are coming back to the industry is a huge amount of strict environmental requirements for the ecological behavior of industrial enterprises and current very bad ecological situation. However this inovative solutions doesn´t have to be only benefits for our environment but the can bring various simplifications to the production process, shortening the time required for preparation or technological breaks, and lower the costs of input material and subsequent waste treatment.
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