Academic year 2018/2019 |
Supervisor: | prof. Ing. Milan Horáček, CSc. | |||
Supervising institute: | ÚST | |||
Teaching language: | Czech | |||
Aims of the course unit: | ||||
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. | ||||
Learning outcomes and competences: | ||||
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. | ||||
Prerequisites: | ||||
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. | ||||
Course contents: | ||||
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. | ||||
Teaching methods and criteria: | ||||
The course is taught through lectures explaining the basic principles and theory of the discipline. Teaching is suplemented by practical laboratory work. | ||||
Assesment methods and criteria linked to learning outcomes: | ||||
Attendance in lectures is recommended, attendance in exercises is obligatory. Credit for exercises: semestr project - obligatory Examination : written and oral exam. |
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Controlled participation in lessons: | ||||
Attendance at laboratory seminars is compulsory. Absence from 3 seminars may be compensated for. | ||||
Type of course unit: | ||||
Lecture | 13 × 3 hrs. | optionally | ||
Labs and studios | 13 × 2 hrs. | compulsory | ||
Course curriculum: | ||||
Lecture | Properties of moulding sands Dispersal of sands grains Moulding sands with clay binders Cement sands Ceramic sands Plaster sands Mouldin sands with sodium silicates Moulding sands with resin binders Moulding sands with oil bindres Moulding sands with polysacharides Coating materils for moulds and cores Recycling of moulding sands Safety and working condition with moulding materials |
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Labs and studios | 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. | |||
Literature - fundamental: | ||||
1. Lewandowski J.L: Tworzywa na formy odlewnicze, , 0 | ||||
2. Kolektiv: Formstoffe und Formverfahren in der Giesereitechnik, , 0 | ||||
3. Kolektiv: Operating guide to high-density molding, , 0 | ||||
4. Rusín,K: Formovací materiály a směs | ||||
Literature - recommended: | ||||
1. Rusín K.: Slévárenské formovací materiály, , 0 | ||||
2. Jelínek P.: Slévárenské formovací směsi a materiály, , 0 |
The study programmes with the given course: | |||||||||
Programme | Study form | Branch | Spec. | Final classification | Course-unit credits | Obligation | Level | Year | Semester |
M2I-P | full-time study | M-SLE Foundry Technology | P linked to branch B-STG | Cr,Ex | 7 | Compulsory | 2 | 1 | W |
M2I-P | full-time study | M-SLE Foundry Technology | -- | Cr,Ex | 6 | Compulsory | 2 | 1 | W |
Faculty of Mechanical Engineering
Brno University of Technology
Technická 2896/2
616 69 Brno
Czech Republic
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