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Test the applicability of biogenic binders during casting of gray cast iron
Fiala, Vlastimil ; Neudert, Alois (referee) ; Cupák, Petr (advisor)
The thesis deals with verification of applicability of biogenic binders during casting of gray cast iron. Applicability of these binders for making moulds as well as cores was verificated. The introduction describes strength of cured mixture with biogenic binder including influence of additives and refractory coating. The main part describes process of manufacturing of castings being poured into the biogenic binder bonded moulds. Pouring castings with cores bonded with the same binder is described as well. The last part deals with assessment of the given tests. The thesis comprises photodocumentation of poured samples.
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STUDY OF BIOGENOUS BINDERS
Cupák, Petr ; Jelínek, Petr (referee) ; Neudert, Alois (referee) ; Rusín, Karel (advisor)
oundry production, which forms an integral part of the engineering industry, is a source of waste with a negative impact on the working and living environment. The pressure on greening the production in all production branches of industry does not dodge the foundry industry and technical engineers seek out possibilities of decreasing the negative impact of the production of casting on the environment. An important source of environmentally dangerous waste in foundry operation is the use of organic compounds during the preparation of shaping and core mixtures. Their substitution with materials that would ensure similar technological features of the shaping and core mixtures as the organic materials used hitherto and at the same time decrease the amount of solid, liquid and gaseous ecologically undesirable compounds used in or arising during the preparation and use of shaping and core mixtures, would be significant for decreasing the ecological burden connected to casting production. A promising group of materials usable as components of shaping and core mixtures are the biopolymer materials which can substitute the organic connective systems used in the production of foundry cores by the means of the so-called hot processes – Hot-Box and Warm-Box. This work focuses on the exploration of the technological and ecological features of several biopolymer materials available on the domestic market which have the potential to become a full alternative of the binders used so far on the basis of urea-formaldehyde, melamine-formaldehyde, phenol-formaldehyde and furan resins.
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The study of binder systems for technology Warm box
Lenghardová, Romana ; Malec, Silvestr (referee) ; Rusín, Karel (advisor)
The project elaborated in frame of engineering studies branch M2332-00. The project is submitting the study of binder systems for technology Warm box. Pursuant to the literary pursuit a problem of the technology Warm box these binders was tested: binder systems based of the Na-silicates, biogenous binders – proteins, polysacharides and fenol resins. Fenol resins and biogenous binders (K2 and Hide glue) showed to be optimal for core making technology Warm box. Biogenous binders are ecologically unexceptionable.
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Application of biogenous core binder for production of castings in automotive field
Vymyslický, Jakub ; Rusín, Karel (referee) ; Cupák, Petr (advisor)
This thesis deals with foundry binders and it is narrowly focused on biogenous binders used for production of castings in automotive field. There is a short overview of all groups of forming and core mixtures at the beginning of the thesis, which describes chemical composition of the mixtures and also development history of the mixtures. The thesis continues by focusing on biogenous binders, which are developed for the automotive field and with another biogenous binders which fits with the automotive field demands. Overview of technological and ecological properties was made for all of the listed biogenous binders. Advantages and disadvantages of the biogenous binders were also noted.
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Water soluble foundry binder with heat hardening
Prokop, Tomáš ; Burianová, Klára (referee) ; Cupák, Petr (advisor)
Foundry production produces the biggest amount of dangerous waste, which has a negative impact on environment and working conditions in the foundry. The foundry engineers test new technologies of shaping mixtures with new binders to protect environment and working conditions. We can reduce the production of dangerous waste by using better technologies and less harmful materials, which are needed for modeling forms and cores. The large source of pollution are binders, hardeners and catalyzer needed for binding sand. This work is focused on new types of ecological binders, which are dissolvable in water and are formed by setting temperature. These binders are ecological variants of known inorganic and organic binders.
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Test the applicability of biogenic binders during casting of gray cast iron
Fiala, Vlastimil ; Neudert, Alois (referee) ; Cupák, Petr (advisor)
The thesis deals with verification of applicability of biogenic binders during casting of gray cast iron. Applicability of these binders for making moulds as well as cores was verificated. The introduction describes strength of cured mixture with biogenic binder including influence of additives and refractory coating. The main part describes process of manufacturing of castings being poured into the biogenic binder bonded moulds. Pouring castings with cores bonded with the same binder is described as well. The last part deals with assessment of the given tests. The thesis comprises photodocumentation of poured samples.
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Application of biogenous core binder for production of castings in automotive field
Vymyslický, Jakub ; Rusín, Karel (referee) ; Cupák, Petr (advisor)
This thesis deals with foundry binders and it is narrowly focused on biogenous binders used for production of castings in automotive field. There is a short overview of all groups of forming and core mixtures at the beginning of the thesis, which describes chemical composition of the mixtures and also development history of the mixtures. The thesis continues by focusing on biogenous binders, which are developed for the automotive field and with another biogenous binders which fits with the automotive field demands. Overview of technological and ecological properties was made for all of the listed biogenous binders. Advantages and disadvantages of the biogenous binders were also noted.
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STUDY OF BIOGENOUS BINDERS
Cupák, Petr ; Jelínek, Petr (referee) ; Neudert, Alois (referee) ; Rusín, Karel (advisor)
oundry production, which forms an integral part of the engineering industry, is a source of waste with a negative impact on the working and living environment. The pressure on greening the production in all production branches of industry does not dodge the foundry industry and technical engineers seek out possibilities of decreasing the negative impact of the production of casting on the environment. An important source of environmentally dangerous waste in foundry operation is the use of organic compounds during the preparation of shaping and core mixtures. Their substitution with materials that would ensure similar technological features of the shaping and core mixtures as the organic materials used hitherto and at the same time decrease the amount of solid, liquid and gaseous ecologically undesirable compounds used in or arising during the preparation and use of shaping and core mixtures, would be significant for decreasing the ecological burden connected to casting production. A promising group of materials usable as components of shaping and core mixtures are the biopolymer materials which can substitute the organic connective systems used in the production of foundry cores by the means of the so-called hot processes – Hot-Box and Warm-Box. This work focuses on the exploration of the technological and ecological features of several biopolymer materials available on the domestic market which have the potential to become a full alternative of the binders used so far on the basis of urea-formaldehyde, melamine-formaldehyde, phenol-formaldehyde and furan resins.
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