618-2022/01 – Foundry Molds and Molding mixtures (SFaFS)

Gurantor departmentDepartment of Metallurgy and FoundryCredits5
Subject guarantorIng. Jaroslav Beňo, Ph.D.Subject version guarantordoc. Ing. Petr Lichý, Ph.D.
Study levelundergraduate or graduateRequirementCompulsory
Year3Semesterwinter
Study languageCzech
Year of introduction2014/2015Year of cancellation
Intended for the facultiesFMTIntended for study typesBachelor
Instruction secured by
LoginNameTuitorTeacher giving lectures
BEN001 Ing. Jaroslav Beňo, Ph.D.
LIC03 doc. Ing. Petr Lichý, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Combined Credit and Examination 16+0

Subject aims expressed by acquired skills and competences

Acquired knowledge: - student will be able to characterize individual technologies for molding and core mixture manufacture - student will be able to define basic methods for testing of molds and cores mixtures together with their regulation based on their physical – chemistry and technological properties. Acquired skills: - student will be able to predict mutual interactions of sand – binder system -student will be able to apply their theoretical knowledge in order to control quality of molding mixture in relation to selected technology

Teaching methods

Lectures
Individual consultations
Tutorials

Summary

The subject is focused on theoretical and practical aspects of moulding mixtures manufacture and control. The attention is devoted to mutual interaction of sand – binder system and to individual technologies of moulds and cores manufacture. General methods of testing and control of moulding mixtures is also presented here.

Compulsory literature:

Sand Binder Systems III - XIII. Foundry Management and Technology. Cleveland:Penton, 1995, roč. 124. ISSN 0360-8999 Mold & core test handbook. 3rd ed. Des Plaines: American Foundry Society, c2001-2006. ISBN 0-87433-228-1.

Recommended literature:

GOODRICH, George M., ed. Iron castings engineering handbook. Rev. and repr. Schaumburg: American Foundry Society, 2006. ISBN 0-87433-260-5.

Way of continuous check of knowledge in the course of semester

E-learning

http://www.fmmi.vsb.cz/cs/urceno-pro/studenty/podklady-ke-studiu/studijni-opory

Další požadavky na studenta

Elaboration of semestral projects and completion of the interim tests

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

1. Moulding and core mixtures. Basic components of moulding mixtures, their definition and classification. Basic characterization and division of sands. Evaluation of quality of natural and artificial sands 2. Silica sands, physical – chemistry properties, disadvantages of silica sands and their elimination 3. Artificial sands. Classification, general characterization and possibility of their utilization. Structure of moulding mixture. Porosity and permeability of moulding mixtures 4. Thermo-physical properties of moulding mixtures. Specific surface area, methods of its determination, Coefficient of angularity and its influence on technological properties of moulding mixture 5. Activation of sand grains. Reclamation of sands, methods and evaluation of quality reclaim 6. Binder systems of the I.-IV. Generation, general characterization. Clay binders of foundry technology. Role of water in clay minerals. Bentonites 7. Activation of bentonites. Changes of bentonite binder after thermal exposition. Control of green sand systems 8. Additives of green sand system. Carriers of Pyrolysis Carbon. Other additives of green sand systems. 9. Chemicization of mould and core manufacture. Binder system of the II. Generation – alkali silicates, general characterization. Methods and principles of alkali silicates curing 10. CT – and ST – mixtures with alkali silicates. CO2 – process. Self-setting mixtures with liquid hardeners. Problems with collapsibility of mixtures with water glass 11. Binder systems of the II. Generation based on organic resins. Moulding and cores mixtures based on phenol – formaldehyde resins. Croning method. HOT-BOX method and its versions. Gisag COLD-BOX method (No - bake ) 12. Moulding and cores mixtures based on furan resins. Self-settings mixtures with catalyst. Self-hardening mixture (SO2 – process), Resol – CO2 process 13. Chemistry of polyurethane binders. Alkyd-oil polyurethanes. Phenol polyurethanes. Methods of core manufacture PUR COLD-BOX, PEP-SET. Saccharide binders and additives. 14. Binders systems of the III. And IV. Generation, application of physical and biological ways of binding for mould manufacture.

Conditions for subject completion

Combined form (validity from: 2014/2015 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 30  15
        Examination Examination 70  21
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2019/2020 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan
2019/2020 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2018/2019 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2018/2019 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan
2017/2018 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2017/2018 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan
2016/2017 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2016/2017 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan
2015/2016 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2015/2016 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan
2014/2015 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies P Czech Ostrava 3 Compulsory study plan
2014/2015 (B2109) Metallurgical Engineering (2109R038) Modern Metallurgical Technologies K Czech Ostrava 3 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner