Browsing by Subject "osnowa"

Now showing 1 - 8 of 8

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Badania własności fizycznych kompozytów na osnowie aluminium wzmacnianych włóknem szklanym.
(Data obrony: 2019-07-09) Żebrowska, Iga
Wydział Metali Nieżelaznych
Access status: Restricted ,
Badania własności mechanicznych kompozytów na osnowie aluminium wzmocnionych włóknem szklanym.
(Data obrony: 2019-07-09) Zaczyk, Marzena
Wydział Metali Nieżelaznych
Access status: Open Access ,
Dependence of tensile wet strength from regeneration time and grain size of the matrix ceramic moulds
(2011) Kamińska, Jadwiga; Kolczyk, Joanna; Żymankowska-Kumon, Sylwia
Production technology of nwestment casting involves transmitting the elements of shape, dimensions and properties by filling in the appropriate liquid metal ceramic forms reproduced by a model made of wax removed by melting it. The manufacturing process of inwestment casting in the lost wax technology consists of a number of technological operations: preparing of wax models and their assembling in the model units, the preparation of ceramic mixture, successive layers of debris, wax melting in an autoclave, drying the samples at 100 °C, heating the samples at temperatures ranging from 400 to 700 °C. So far, the technology was based on the use of ceramic mixture, which the bond was hydrolysed ethyl silicate. Currently, due to environmental protection and improvement of working conditions, more and more binders with alcohol is replaced with an aqueous solution of colloidal silica. In the study, to create the individual layers a ceramic form, used regenerated ceramic mixture derived from foundry and green ingredients. The regeneration time was respectively 5 and 15 minutes. Used ceramic moulds after mechanical reclamation was given to sieve analysis to determine the grain size (di). Grain sizes 0.2, 0.4 and 0.63 mm were used for the coating of ceramic moulds. The paper presents results of research aimed at the determination of the relationship between tensile wet strength and grain size of ceramic mould: Rm = f[dL). Tests were conducted on cylindrical samples, which deposited the layers of reclaimed ceramic material.
Access status: Open Access ,
Effect of grain size of the reclaimed matrix ceramic moulds used in the lost wax technology on the strength at high temperature
(Wydawnictwa AGH, 2010) Kamińska, Jadwiga; Kolczyk, Joanna; Żymankowska-Kumon, Sylwia
Production technology of investment casting involves transmitting the elements of shape, dimensions and properties by filling in the appropriate liquid metal ceramic forms reproduced by a model made of wax removed by melting it. The manufacturing process of investment casting in the 8 lost wax technology consists of a number of technological operations: preparing of wax models and their assembling in the model units, the preparation of ceramic mixture, successive layers of debris, wax melting in an autoclave, drying the samples at 100 °C, heating the samples at temperatures ranging from 400 to 700 °C. So far, the technology was based on the use of ceramic mixture, which the bond was hydrolysed ethyl silicate. Currently, due to environmental protection and improvement of working conditions, more and more binders with alcohol is replaced with an aqueous solution of colloidal silica. In the study, as the basic of individual layers a ceramic form, used regenerated ceramic mixture derived from foundry and green ingredients. Used ceramic moulds after mechanical reclamation was given to sieve analysis to determine the grain size $(d_{L})$. Grain sizes 0.2, 0.4 and 0.63 mm were used for the coating of ceramic moulds. The paper presents results of research aimed at the determination of the relationship between tensile wet strength and grain size of ceramic mould: $R_{m} = f(d_{L})$. Tests were conducted on cylindrical samples, which deposited a layer of reclaimed ceramic material.
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Ocena mikrostruktury żeliwa krzemowego
(Data obrony: 2021-02-02) Świątkowski, Adrian
Wydział Odlewnictwa
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Otrzymywanie i badanie właściwości kompozytów typu "plaster miodu"
(Data obrony: 2020-09-30) Maciechowski, Marcin
Wydział Inżynierii Materiałowej i Ceramiki
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Wpływ rodzaju osnowy na wytrzymałość mas ze spoiwem Inotec
(Data obrony: 2021-05-14) Stawczyk, Bartłomiej
Wydział Odlewnictwa
Access status: Restricted ,
Wpływ wielkości i kształtu ziarna osnowy na wybrane właściwości masy wykonanej w technologii Hot box
(Data obrony: 2020-01-24) Kapała, Bartłomiej
Wydział Odlewnictwa