Wyniki wyszukiwania - BazTech

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Strength Properties of Ceramic Moulds Containing Spent Moulding Sand After Initial Reclamation

Angrecki M., Kamińska J., Jakubski J., Wieliczko P.

Archives of Foundry Engineering

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2019

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iss. 3

5--10

EN

The results of testing the strength properties of experimental ceramic materials containing spending moulding sand after initial mechanical reclamation as a material for subsequent layers of the stucco composition were presented. Tests were carried out on spent moulding sands from various foundry technologies, i.e. sand with furfuryl resin and sand with hydrated sodium silicate. The spent, agglomerated moulding sand has undergone a crushing process. Next, the required granular fractions used for individual layers of the stucco material were separated. Ceramic samples, in which the spent moulding sand was a substitute for fresh silica sand in successive layers of the stucco composition, were prepared. As a reference material, identical ceramic samples were used but with all layers made from the fresh silica sand. Samples prepared in this way were used to determine the bending strength of ceramic materials in the temperature range from 20 to 900ºC. The obtained values of the bending strength have demonstrated that spent moulding sand can be used in investment casting with no adverse effect on the strength of ceramic materials.

2

Impact of analysis method on evaluation of ceramic mould surface microgeometry in the lost wax process

Matysiak H., Haratym R., Kwapisz J., Kłębczyk M.

Archives of Foundry Engineering

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2011

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Vol. 11, iss. 3 spec.

131--134

EN

In this article two methods of ceramic mould surface microgeometry analysis were presented. First was a contact method, in which Profilometer S3P produced by Perthen Mahr was used. In second optical method optical profiler Veeco NT 9300 was used for surface microgeometry analysis. Evaluation of the results gathered with those methods was made. It was found that optical analysis method of surface microgeometry give better research possibilities (it’s more optimal).

3

Wirtualizacja wytwarzania modeli odlewniczych

Dobosz S. M.

Archiwum Odlewnictwa

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2005

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R. 5, nr 17

69--74

PL

Wysokie wymogi jakościowe współczesnego odlewnictwa, zmuszają do coraz większego wsparcia wytwarzania modeli odlewniczych nowoczesną techniką ich projektowania oraz wykonawstwa. Dotyczy to także metod odlewania precyzyjnego a w tym technologii wytapianych modeli. Artykuł prezentuje nową metodę komputerowego wspomagania tych procesów przy użyciu techniki szybkiego prototypowania (Rapid Prototyping) z wykorzystaniem techniki nakrapiania wtryskowego – DODJET.

EN

The requirements of modern foundry with its’ widening range of offered products require the more complex supporting role of modern technique of designing and producing both patterns and foundry moulds. It also concerns the methods of investment founding including the technology of smelted patterns. This article presents the original method of computer aiding these processes by using the Rapid Prototyping method.

4

Ocena krystalizacji staliwa metodą ATD

Pietrowski S., Władysiak R., Meksa W., Woźnicki G.

Archiwum Odlewnictwa

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2003

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R. 3, nr 8

293--300

PL

W pracy przedstawiono możliwości kontroli staliwa niestopowego i wysokostopowego metodą analizy termicznej i derywacyjnej (ATD). Wykonuje się z niego wysokojakościowe odlewy metodą traconych modeli z zastosowaniem rdzeni mocznikowych.

EN

This paper presents the capabilities of control with thermal and derivative analysis (TDA) method of cast carbon steel and alloy cast steel. These alloys are applied to product the high-quality casts with use of the carbamide cores and lost-wax process.