652-2303/02 – Fundamentals of forming of metallic materials (ZTKM)
| Gurantor department | Department of Metallurgical Technologies | Credits | 5 |
| Subject guarantor | Ing. Ludmila Krátká, Ph.D. | Subject version guarantor | Ing. Ludmila Krátká, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 2 | Semester | summer |
| | Study language | English |
| Year of introduction | 2023/2024 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
The student will be able to characterize the mechanisms of plastic deformation, define stress and conditions of limit plasticity, strain and strain rate, will be orientate in the laws of plastic deformation, will be able to identify factors influencing the deformation behaviour of metallic materials, will be able to characterize softening processes during the forming of metallic materials, will acquire basic knowledge in the field of thermomechanical (controlled) forming and cooling of steels, will be able to characterize the properties and possibilities of using plastometric tests, acquires basic knowledge of the issue of heating metallic materials before forming, will acquire basic knowledge in the areas of rolling of flat and long products, open die and closed die forging, wire drawing and extrusion of metallic materials.
Teaching methods
Lectures
Individual consultations
Tutorials
Experimental work in labs
Summary
The subject deals with the fundamentals of forming theory and deformation behaviour of metallic materials and deals with the basics of technology rolling of flat and long product including tubes, open die and closed die forging, wire drawing and extrusion of metallic materials.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Credit: preparation of 3 protocols, 1 seminar paper and completion of a control test.
Examination: combined (written and oral) exam.
E-learning
Other requirements
80% participation in the tutorials, preparation of 3 protocols, 1 seminar paper and successful completion of the control test.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1) Introduction (definition of fundamental terms, overview of the most important formed metallic materials and products)
2) Crystal structures of metals, defects of lattice, mechanisms of plastic deformation, stress, stress states, limit plasticity.
3) Strain, strain states, strain rate, deformation friction, basic laws of plastic deformation.
4) Factors affecting the deformation behaviour of metallic materials.
5) Softening processes at forming of metallic materials, mathematical description of stress-strain curves at cold and hot forming.
6) Fundamentals of control (thermomechanical) forming and cooling of steels.
7) Characteristics and possibilities of using plastometric tests and simulations.
8) Fundamentals of heating metallic materials before forming (forming temperatures, physical bases of heating, accompanying phenomena of heating, methods of heating, types of furnaces).
9) Theoretical aspects of rolling (deformation zone, biting metal into the rolls, types of rolling stands and mills, dividing of rolled products), initial semi-finished products for rolling.
10) Hot and cold rolling of flat products.
11) Rolling of long products with including of tubes.
12) Theoretical aspects of forging (initial materials for forging, influence of forging on the structure and properties of forgings), open die forging.
13) Closed die forging, forming machines in forges.
14) Fundamentals of wire drawing and extrusion of metallic materials.
Tutorials:
1) Introduction, rate of filling of slip planes for Fe crystal lattices.
2) Stress states and equivalent stress – graphical representation of the stress state, calculation of the indicator of the stress state and equivalent stress.
3) Calculations of dimensional changes, strains, coefficients of strain and verification of the law of conservation of volume during material forming.
4) Calculations of dimensional changes, strains, coefficients of strain and verification of the law of conservation of volume during material forming.
5) Compilation of the calibration table and experimental rolling of Pb and Al slabs.
6) Evaluation of the hot tensile test up to rupture – protocol.
7) Mathematical description of stress-strain curves at cold forming.
8) Length of deformation zone, condition of biting metal during rolling, experimental determination of the maximum bitte angle and the coefficient of friction during rolling.
9) Rolling of Pb sheet to desired dimensions – protocol.
10) Excursion to a selected company dealing with volume forming of metallic materials and assignment of a seminar paper (on the topic of volume forming of metallic materials).
11) Calculation of degree of reduction at forging.
12) Verification of the law of conservation of volume during the operation of open die hot forging – upsetting, including the determination of the influence of the size of the strain and the slenderness of the semi-finished product on the barrelling – protocol.
13) Test (law of conversation of volume during material forming, deformation zone and biting the metal into rolls, degree of reduction at forging.
14) Presentation of the seminar work.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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