TitleInfluence of Quartz Sand Quality on Bending Strength and Thermal Deformation of Moulding Sands with Synthetic Binders
Journal titleArchives of Foundry Engineering
KeywordsInnovative foundry technologies and materials ; Quartz sand ; Self-hardening moulding sands ; Synthetic resins ; Hot distortion
Divisions of PASNauki Techniczne
Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:
- Theoretical Aspects of Casting Processes,
- Innovative Foundry Technologies and Materials,
- Foundry Processes Computer Aiding,
- Mechanization, Automation and Robotics in Foundry,
- Transport Systems in Foundry,
- Castings Quality Management,
- Environmental Protection.
Modern techniques of castings production, including moulding sands production, require a strict technological regime and high quality
materials. In the case of self-hardening moulding sands with synthetic binders those requirements apply mainly to sand, which adds to
more than 98% of the whole moulding sand mixture. The factors that affect the quality of the moulding sands are both chemical (SiO2
Fe2O3 and carbonates content) and physical. Among these factors somewhat less attention is paid to the granulometric composition of the
sands. As a part of this study, the effect of sand quality on bending strength Rgu
and thermal deformation of self-hardening moulding sands
with furfural and alkyd resin was assessed. Moulding sands with furfural resin are known  to be the most susceptible to the sand quality.
A negative effect on its properties has, among others, high content of clay binder and so-called subgrains (fraction smaller than 0,1mm),
which can lead to neutralization of acidic hardeners (in the case of moulding sands with furfuryl resin) and also increase the specific
surface, what forces greater amount of binding agents. The research used 5 different quartz sands originating from different sources and
characterized with different grain composition and different clay binder content.
PublisherThe Katowice Branch of the Polish Academy of Sciences
Date2015[2015.01.01 AD - 2015.12.31 AD]
TypeArtykuły / Articles
ReferencesJakubski (2003), St Influence of binder type on deformation of the core sands in high temperature, Materials Engineering, 10, 231.