Course detail

Moulding Materials and Ecology

FSI-PFMAcad. year: 2023/2024

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

Czech

Number of ECTS credits

Mode of study

Not applicable.

Guarantor

prof. Ing. Milan Horáček, CSc.

Department

Institute of Manufacturing Technology (ÚST)

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

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Kolektiv: Formstoffe und Formverfahren in der Giesereitechnik, , 0
Kolektiv: Operating guide to high-density molding, , 0
Lewandowski J.L: Tworzywa na formy odlewnicze, , 0
Rusín,K: Formovací materiály a směs

Recommended reading

Jelínek P.: Slévárenské formovací směsi a materiály, , 0
Rusín K.: Slévárenské formovací materiály, , 0

Classification of course in study plans

  • Programme N-SLE-P Master's 1 year of study, winter semester, compulsory

Type of course unit

 

Lecture

39 hod., optionally

Teacher / Lecturer

Ing. Jaroslav Beňo, Ph.D.

Syllabus

Properties of moulding sands
Dispersal of sands grains
Moulding sands with clay binders
Cement sands
Ceramic sands
Plaster sands
Moulding sands with sodium silicates
Moulding sands with resin binders
Moulding sands with oil bindres
Moulding sands with polysacharides
Coating materials for moulds and cores
Recycling of moulding sands
Safety and working condition with moulding materials

Laboratory exercise

26 hod., compulsory

Teacher / Lecturer

Ing. Jaroslav Beňo, Ph.D.

Syllabus

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.