Full-time study

4 years

prof. Ing. Miroslav Píška, CSc.

Chairman :
prof. Ing. Miroslav Píška, CSc.
Councillor internal :
prof. Ing. Ivan Křupka, Ph.D.
doc. Ing. Libor Pantělejev, Ph.D.
doc. Ing. Antonín Záděra, Ph.D.
doc. Ing. Josef Sedlák, Ph.D.
prof. Ing. Radim Kocich, Ph.D.
Councillor external :
Ing. Martin Petrenec, Ph.D. (Fischer Vyškov, s.r.o.)
Ing. Jiří Rosenfeld, CSc. (Slovácké strojírny, a.s., Uherský Brod)
Ing. Libor Beránek, Ph.D. (Fakulta strojní ČVUT v Praze)

The doctoral study programme in Manufacturing Technology is focused on production sciences and technologies, namely machining, forming, welding, foundry technology, surface treatment technology, including automation of production preparation and automation of production processes that use and require these technologies.
During the study, students will gain knowledge of applied mathematics, physical metallurgy, experimental theory and optimization of technological processes, along with other theoretical and practical knowledge closely related to the selected area of doctoral study.
The aim of the doctoral study programme is to prepare highly qualified staff for scientific work in the field of engineering technology. The study is focused on the knowledge of the theoretical basis of the whole field and also on a detailed acquaintance with the most important findings in a narrower focus, which are followed by the topics of the dissertation. The study is focused on preparation for scientific work in the chosen field and the achieved level of knowledge is presented at the state doctoral examination.
The ability to achieve original scientific results is demonstrated by the elaboration and defence of the dissertation. After a successful defence of the dissertation, the graduates of the doctoral study programme are awarded the academic title "Doctor" (abbreviated to Ph.D. after the name).

In the doctoral study of the Manufacturing Technology programme, it is possible to specialize in the field of machining technology and its optimization, forming and welding technology, foundry technology, production management, machine modelling applications and computer simulations. Doctoral students are able to participate in all forms of research, contract development and economic cooperation with industrial companies, where they solve advanced problems of technical practice. They also have the opportunity to take advantage of short-term and long-term internships and study stays in our country and within the EU in cooperation with foreign universities.
Graduates of the doctoral study program Engineering Technology have comprehensive professional skills and knowledge of production technologies, methods of their management and planning, have knowledge in the field of materials science and engineering in application to selected production technologies, both theoretical and practical.
Graduates of the doctoral study programme in Manufacturing Technology are expected to be employed in leading positions associated with the technical and technological preparation of production, its management and further development.
Graduates will also be employed as research and development staff in applied research centres as well as academic staff at universities and academic institutions.

Graduates of doctoral studies are equipped with very good theoretical and professional knowledge and therefore have a wide range of employment opportunities in professional or management positions within state and private engineering or interdisciplinary manufacturing companies, from small and medium-sized companies to large joint stock companies. The acquired knowledge can also be used as research and development workers or private entrepreneurs in our country and abroad.

See applicable regulations, DEAN’S GUIDELINE Rules for the organization of studies at FME (supplement to BUT Study and Examination Rules)

The rules and conditions of study programmes are determined by:
BUT STUDY AND EXAMINATION RULES
BUT STUDY PROGRAMME STANDARDS,
STUDY AND EXAMINATION RULES of Brno University of Technology (USING "ECTS"),
DEAN’S GUIDELINE Rules for the organization of studies at FME (supplement to BUT Study and Examination Rules)
DEAN´S GUIDELINE Rules of Procedure of Doctoral Board of FME Study Programmes
Students in doctoral programmes do not follow the credit system. The grades “Passed” and “Failed” are used to grade examinations, doctoral state examination is graded “Passed” or “Failed”.

Brno University of Technology acknowledges the need for equal access to higher education. There is no direct or indirect discrimination during the admission procedure or the study period. Students with specific educational needs (learning disabilities, physical and sensory handicap, chronic somatic diseases, autism spectrum disorders, impaired communication abilities, mental illness) can find help and counselling at Lifelong Learning Institute of Brno University of Technology. This issue is dealt with in detail in Rector's Guideline No. 11/2017 "Applicants and Students with Specific Needs at BUT". Furthermore, in Rector's Guideline No 71/2017 "Accommodation and Social Scholarship“ students can find information on a system of social scholarships.

The Doctoral Study Programme in Manufacturing Technology is a continuation of the currently accredited master's degree programme in Manufacturing Technology (N-STG), with specializations in Engineering Technology (STG), Engineering Technology and Industrial Management (STG), Modern Lighting Systems (MTS) and Foundry Technology (N-SLE) without specialization.
In the study of Manufacturing Technology, it is possible to specialize in machining technology and its optimization, forming and welding technology, foundry, production control, machine modelling applications, computer aided manufacturing technologies, computer simulations and thus allows to continue in the third stage of study. On the basis of a successful defence and achieving the scientific degree of Ph.D. the graduate demonstrates the ability of scientific work.

1. Aplikace tvrdých a otěruvzdorných povlaků pro pokročilé aplikace obrábění

   Application of hard and abrasion-resistant coatings for the appropriate choice of hard and abrasion-resistant coatings extends the life of the cutting edges up to several times compared to uncoated tools. It further reduces the need for cooling and lubrication during machining and contributes to higher quality machined surfaces. Current technologies - such as HiPiMS - enable coating even in inaccessible places and reduce the unevenness of the applied coatings while refining their structure for both HSS steels and especially sintered carbides. However, a number of partial influences remain unexplored – eg. surface pretreatment and postprocessing of PVD coatings, requirements for good surface anchoring, taking into account the microgeometry of the cutting edge, etc. The aim of the doctoral thesis is to predict these partial design and physical parameters and quantify the technological effects for selected technologies and tools.

   Tutor: Píška Miroslav, prof. Ing., CSc.

2. Application of additive technologies in the production of components with complex shapes

   Additive technology for the production of machine component is one of the pillars of the transformation of current industrial production. There is a rapid development not only in individual 3D printing methods, in increasing printing speed, size of printed parts, and used materials, but also in design approaches to the shape and function of machine parts using optimization methods such as topological optimization or generative design. The technological design is often neglected and we get to the edge of the technological limits of conventional technologies. Direct or indirect printing of metal parts is linked to this type of optimization for complicated shaped parts. This method carries certain limits in the size of parts, production speed, price, and type of material. Very complicated parts with internal cavities are produced as standard using foundry technology. Here, too, additive production finds application, both in the printing of models and in the printing of sand or ceramic molds. A novelty that brings a certain innovative view of the production of components of the so-called "hybrid technology", which combines the use of 3D printing and conventional production methods. To meet the requirements for surface and internal quality, dimensional tolerances, material properties, it is necessary to have a deep knowledge of the properties and limits when using this technology. The aim of the work will be the research of hybrid methods usable for the production of complicated components. The properties and quality of the component produced by hybrid technology will be compared with conventional methods and 3D metal printing methods. The financial demands of individual technologies for the selected component and production parameters will be evaluated.

   Tutor: Kouřil Karel, doc. Ing., Ph.D.

3. Biogenic binders for foundry moulding mixtures

   In the production of castings, liquid metal is casted into permanent (metal) or expendable moulds. Nowadays expendable moulds are usually made of molding mixtures, which are formed by sand, binder and hardener (accelerator). Various types of resins are currently the most commonly used as binders. After the moulds are casted, the mould material is heated, which in these carbon-based binder systems is accompanied by its thermodestruction and the formation of gaseous exhalations. During the oxidation of the binder at high temperature often some aromatic hydrocarbons are produced, which are toxic and highly harmful gases. The aim of the work is research and development of new types of biogenic binder systems, which will enable to achieve satisfactory properties of the moulding mixture, mould properties while reducing gaseous exhalations, reducing harmful wastes and increasing the quality of working environment and occupational hygiene.

   Tutor: Záděra Antonín, doc. Ing., Ph.D.

4. Controlling permeability and mechanical properties of ceramic shells

   When making castings by the lost wax investment casting method technology, we cast into ceramic shells. These shells make it possible to obtain high precision of shape and dimensions of the castings while at the same time ensuring the ceramic shell to remain inert to the melted material. To ensure precise shape and dimensions of the casting, it is necessary to guarantee certain mechanical properties of the ceramic shells. These properties can be achieved by proper selection of the ceramic shell material, shape and size of ceramic and filling of ceramic slurry, the coating technology used and the ceramic annealing temperature of the shell. An increase in the ceramic shell strength is often accompanied by unwanted decrease in its permeability. When making ceramic shells, it is desirable to maximize their permeability. The objective of this project is to find the correlation between the material and the technological parameters of the ceramic shells and to optimize the manufacturing procedures. Part of the project objective is to propose and validate the assessment method of the material and technological properties of the ceramic shells. The project also involves research and development of the modern methods for increasing ceramic shell permeability using composite ceramic materials, e.g. utilizing fibres in ceramic slurries.

   Tutor: Záděra Antonín, doc. Ing., Ph.D.

5. Design of methodology and tests of utility properties of axial cutting tools

   The aim of the research is to design the methodology of cutting tests of innovative cutting tools, their implementation and analysis of the process, which will be focused on determining the defined properties according to the machining operations. The research will cover the evaluation of cutting tools wear, analysis of surface finish and other accessible parameters that will be the basis for the choice of practical applications.

   Tutor: Sedlák Josef, doc. Ing., Ph.D.

6. Machining high-precision holes with sintered carbide and cermet blades with PVD coating

   The cutting tool, or rather its geometry, creates, under selected working conditions, a newly machined surface with specific properties that can be described by a set of mechanical, physical, chemical and dimensional quantities, which we collectively refer to as surface integrity. Once we have defined the optimum surface integrity for a particular component with respect to its function, reliability, durability, the challenge is to design the cutting tool and working conditions to achieve the required integrity.

   Tutor: Kouřil Karel, doc. Ing., Ph.D.

7. Methods of increasing the casing quality by statistic observation method and foundry processes modelling

   The final quality of the castings is significantly influenced by the mould material and its properties, the chemical composition and material quality of the casting, the technology selected, the casting conditions and the cooling and solidification of the castings. All these influences may affect the casting quality both separately and synergically. Some processes, e.g. filling of the mould cavity or cooling and solidification of castings are currently simulated and designed using numeric simulations. In the foundry practise, some processes are controlled on the basis of selected assessed and measured parameters and measured physical quantities which describe and quantify the processes observed. Statistical methods are used for quality control of the castings especially in serial and large-series production. The objective of this project is to design a comprehensive method of assessment and quality control of the castings using more advanced methods of statistical analysis and analysis of neural networks. These methods are expected to be used during the melting phase and metallurgical processing for controlling these processes. The aim is, based on the classification and number of defects in castings, to optimize the melting process and metallurgical processing. The verified method should then be applied to other important casting manufacture processes.

   Tutor: Záděra Antonín, doc. Ing., Ph.D.

8. Productive tools and technologies for machining high-precision holes with defined surface integrity

   The topic is focused on the design and testing of reamers with suitable geometry and microgeometry from a cutting part made of sintered carbides or cermets, with an optimized PVD nanocomposite layer, specially designed for reaming. The aim is not only to ensure the required dimensional and shape accuracy of the machined holes, but also to increase the durability of the reamers and their operational reliability under suitable working conditions, when machining particularly difficult to machine materials.

   Tutor: Kouřil Karel, doc. Ing., Ph.D.

9. Research of material and technological properties of abrasion-resistant Hardox sheets

   The dissertation is thematically focused on material and technological research of abrasion-resistant Hardox sheets. Their increased physical and mechanical properties result from the process of rolling at high temperatures and subsequent hardening and tempering, which predestine them for use in a wide range of special applications and drilling rigs as well as special machine mechanisms. Hardox abrasion-resistant sheets are produced by hot rolling at temperatures of 900 to 920 °C, with a cross-section reduction of 50 ÷ 85%, in the area of stable austenite. Subsequently, within 1 min it becomes cloudy in the water shower. This achieves a hardness of 46 ÷ 50 HRC, after low-temperature tempering at 200 to 300 °C. The Hardox material is a structural medium-alloyed high-strength steel heat-treated by controlled rolling. It is characterized by a hard low tempered martensitic structure with a small amount of residual austenite. The reason for the need to carry out such research is undoubtedly the fact that the production of often large-sized components of specific shapes is expensive in all respects and these components are exposed to enormous stress and mechanical wear in processes that have a significant impact on their life. The processes of failure, fatigue and corrosion begin on the surface or just below the surface of the workpiece. Research into the condition of machined surfaces also includes the conditions under which the surface was manufactured and takes into account various technological methods and their effect on the properties of the surface after machining and relates them to the functional requirements of the part. Therefore, more and more research is needed into the essence of creating a new surface and explanation or. expanding the already acquired knowledge about the influence of technological methods on the properties of the newly formed surface. Due to the deformation and thermal effects that accompany the technological processes themselves, internal stresses are formed in the surface layers and the physical-mechanical properties also change. Therefore, research into these problems creates conditions in engineering technology to build new theories and development trends, which will aim to optimize the technological methods used and their impact on the resulting mechanical properties and microstructure of machined surfaces and the subsequent formulation of new relationships between these aspects. The analysis, research and publications of many authors show that each technological operation has an effect on changing the properties of the machined surface and also shows that the influence of individual factors on the functional properties of machined surfaces is not always the same. Without research into all these laws, which determine the condition of the machined surface, it is not possible to solve the problem of quality and functionality of surfaces. The equipment of the partner research center of the Faculty of Special Technology called CEDITEK (Center for Quality Testing and Materials Diagnostics) will also be used to the maximum extent for research.

   Tutor: Majerík Jozef, doc. Ing., Ph.D.

10. Study of mechanical properties of material produced by wire arc additive manufacturing

    3D metal printing is effective tool for prototype production of every branch of engineering, as a replacement for existing technologies of production or renovation of tools, jigs and products. The problem is the current ignorance of the structure and mechanical properties of such processed materials. The aim of the disertation will be to study the mechanical properties of selected material nproduced by 3D wire printing, both under static and dynamic loading conditions. Furthemore the study of influence of process parameters of 3D printing on the resulting mechanical properties.

    Tutor: Forejt Milan, prof. Ing., CSc.

11. The limiting strain of light alloys in cold bulk forming

    On the selected Al alloys, which are used for forming the coupling parts volume and machine parts, to assess their plastic and structural changes at high deformations and limit the influence of strain rate. Create a constitutive equation for stress-deformation curves with the limiting conditions limit deformation.

    Tutor: Forejt Milan, prof. Ing., CSc.

12. The study of forming influence on properties of materials manufactured by non-conventional methods

    The aim of these thesis would be in the study of effectiveness of chosen forming processes in view of their suitability for compact bulk materials. For these purposes will be used materials manufactured particularly by non-conventional methods. Besides, interest will be paid on the grain refinement effectivity or more precisely on final properties. Among others, conventional as well as unconventional forming methods will be studied. Main attention would be paid on monitoring of mechanical properties in wide range of temperatures. The focus will be devoted also to the possibility to spread these manufacturing methods into commercial scale.

    Tutor: Kocich Radim, prof. Ing., Ph.D.

13. Trochoidal machining

    At present, the share of difficult-to-machine materials is increasing in technical practice, which makes it possible to reduce the weight not only of vehicles of all kinds, but also of all machine parts that are set in motion and stopped. This ultimately leads to a reduction in energy or fuel consumption, which is a very topical issue today. These materials then place higher demands on the performance of machine tools, their rigidity, higher resistance to the occurrence of self-excited oscillations and overall higher energy consumption. One of the best ways of machining these materials is the so-called trochoidal machining - especially milling, but attempts are made similarly in the production of threads, for example for the purpose of controlled chip breaking. Some modern control systems (Sinumerik) already have this type of interpolation built into the standard menu, but the ability to control this trajectory is limited, and therefore its use often leads to empirical trial-and-error verification, which is time consuming and risky. The work will use parametric programming.The doctoral thesis will focus on the analysis of the cross-section and chip formation for the selected CNC machining technology, prediction and measurement of force load, achieved machining quality and durability of cutting tools.

    Tutor: Píška Miroslav, prof. Ing., CSc.

14. Vacuum metallurgy of nickel alloys

    When making nickel alloy castings using the lost wax investment casting technology, vacuum metallurgy on electric induction furnaces is used. The melting conditions such as the atmosphere pressure in the furnace – the vacuum level and the temperature of the molten metal, must be selected so that the formation is prevented of solid oxides of elements with strong affinity to oxygen during the melting as well as the subsequent casting of the molten metal and the cooling and solidification of the castings. Carbon deoxidation of the molten metal is used here, during which the molten metal is not contaminated by solid inclusions. The objective of the thesis is to determine the conditions for the vacuum melting of selected nickel alloys and superalloys based on thermodynamic modelling. Another partial objective of the thesis is to define the parameters of vacuum induction furnaces depending on the types of the nickel alloys and superalloys. Based on the knowledge of the thermodynamic conditions for oxide reduction, it will be possible to control the system of maintenance and repair of vacuum furnaces in terms of their flowing air into and suction speed for a specific vacuum furnace system.

    Tutor: Čamek Libor, doc. Ing., Ph.D.