Course detail

Welding Theory and Technology

FSI-HS2-KAcad. year: 2015/2016

The course deals with the following topics: Theoretical conditions of the production and existence of a welding joint with respect to welding materials, energetic sources, physical-chemical and metallurgical processes taking place by metallic materials welding. Degradation processes of welding material by thermal deformation cycle. Stress and deformation in welding. Weldability of metallic materials. Principles and theories of individual welding methods and thermal cutting. Brazing of materials.

Language of instruction

Czech

Number of ECTS credits

7

Mode of study

Not applicable.

Guarantor

doc. Ing. Ladislav Daněk, CSc.

Department

Institute of Manufacturing Technology (ÚST)

Learning outcomes of the course unit

The subject Welding Theory and Technology provides students with basic information describing the structure,properties and defects of welding joints, HAZ and about related processes.

Prerequisites

1. Fe – Fe3C equilibrium diagram, 2. TTT and thermo-kinetic diagrams, 3. Testing of mechanical properties of metals, 4. Heat treatment of steels.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

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

The course-unit credit is awarded on condition of having submitted elaborated written reports from exercises, and worked out the assignments during the semester.
Examination: The exam has a written and an oral part and tests the knowledge acquired in lectures and seminars.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The main objective of the course is to provide students with the theoretical foundations and methodology necessary for solving welding and weldability of metals. It prepares students to apply the acquired knowledge when doing class and diploma projects, and for further studies.

Specification of controlled education, way of implementation and compensation for absences

Attendance at seminars is compulsory. Absence may be compensated for by the agreement with the teacher who can set a special programme to be worked out.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

1. Kolektiv autorů. Technologie svařování a zařízení. 1.vyd. Ostrava : Zeross. 2001. 396 s. ISBN 80-85771-81-0
2. Kolektiv autorů. Materiály a jejich svařitelnost 1.vyd. Ostrava: Zeross. 2001.296 s. ISBN 80-85771-85-3

Recommended reading

Hrivňák,Ivan: Teoria zvárania ko.mat., , 0
Séférian,D.: Nauka o kov.ve sv.oceli, , 0
Žák,J. Novák,M.: Teorie svařování, , 0

Classification of course in study plans

  • Programme N2301-2 Master's

    branch M-STG , 2 year of study, winter semester, compulsory

Type of course unit

 

Guided consultation

13 hod., optionally

Teacher / Lecturer

doc. Ing. Ladislav Daněk, CSc.

Syllabus

1. Theoretical principles of forming a welding joint, terminology in welding
2. Physical bases of fusion welding processes. Heat power resources for welding.
3. Extending of heat in a welding joint
4. Temperature – deformation cycle and temperature calculations
5. Tension and deformation in welding joints
6. Macrostructure and microstructure of welding joint. Structure and properties of fusion metal
7. Structure and properties of Heat affected zone
8. Weldability of metallic materials. Weldability of carbon and carbon – manganese steels
9. Weldability of microdoped, low and high alloy steels
10. Weldability testing, disposition to cracking
11. Welding of aluminium, copper and their alloys
12. Welding of graphitic irons,. Principles and processes of heat cutting
13. Brazing and soldering. Thermal spraying.

Laboratory exercise

13 hod., compulsory

Teacher / Lecturer

Ing. Jaroslav Kubíček, IWE

Syllabus

1.Classification of welding methods in ČSN EN and their basic principles.
2.Application of equilibrium diagrams and their applications in welding
3.Construction of a thermal cycle
4.Influence of hydrogen in weldability
5.Calculation of tensions and deformations
6.Weldability of C - Mn and microdopped steels
7.Application of ČSN EN 1011-2 standard
8.Weldability of high alloy steels
9.Defects in welding joints
10.Power welding sources
11.Calculations in welding of electron beam and laser
12.Powered properties of covered electrodes
13.Credit