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Course detail
FSI-PFMAcad. year: 2026/2027
The course gives an integral overview of the properties of moulding materials, sand and binder types, ceramic moulding materials, principles of recycling the moulding mixtures and the application of recycled mixtures. Also dealt with subjects of green sand moulding with a bentonite binder, sodium silicate sands, sand with synthetic resins, hot box and cold box systems, moulding sands with biogenic binders on the base of proteins. For individual technologies their effects on the environment are discussed.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Entry knowledge
Students are expected to be familiar with following: Basic mineralogy, organic and inorganic chemistry, heat transfer, fluidity and filtration of gaseous media, interaction between melt and foundry mould.
Rules for evaluation and completion of the course
Attendance in lectures is recommended, attendance in exercises is obligatory. Credit for exercises: semestr project - obligatory Examination : written and oral exam.Attendance at laboratory seminars is compulsory. Absence from 3 seminars may be compensated for.
Aims
The aim of the course is to familiarise students with chemical and mechanical properties of moulding materials, which will be applied in other courses on technologies. The course will extend the knowledge of basic kinds of binders and sands,as well as principles of recycled waste sands.Students will gain experience in the physical and chemical hardening of moulding sands,and will be made familiar with the problem of the influence of moulding sands on the environment in foundry shops and waste deposits.
Study aids
The materials will be accessible through e-learning.
Prerequisites and corequisites
Basic literature
Recommended reading
Classification of course in study plans
Lecture
Teacher / Lecturer
Syllabus
Properties of moulding sandsDispersal of sands grainsMoulding sands with clay bindersCement sandsCeramic sandsPlaster sandsMoulding sands with sodium silicatesMoulding sands with resin bindersMoulding sands with oil bindresMoulding sands with polysacharidesCoating materials for moulds and coresRecycling of moulding sandsSafety and working condition with moulding materials
Laboratory exercise
The way of a grain size determination,integral curve of grains, Stokes law, etc. Testing of bentonite sands - green sands properties, compactibility properties, influenced bentonite sands after contacts with fluid metals. Technological properties of sodium silicate sands, CO2 process, Ester hardening process, dicalcium silicate process, FeSi process. Plasters moulding sands for Art casings. Polycondensation of urea-formaldehyde resins in acid environment, selfhardening furane sands, Cold Box system catalysed with di/triethylamine,interaction on the interface mould/metal.