Courses

Metal Forming Processes

General

Course Contents

Classification and application of metal forming processes.
Effects of plastic deformation on the crystal lattice of metallic materials, shifting of lattice defects, hardening and aging of metals, stress – strain curves.
Annealing, recrystallization, cold and hot plastic deformation.
Friction and lubrication in forming processes, surface protection, types of lubricants and their application.
Elements of the theory of plasticity: yield criteria, fracture, stress – strain relation, continuity equation, plastic flow rule, equivalent stress and equivalent strain, calculation of force and work.
Forming processes: Forging, extrusion, rolling, cutting, bending, deep drawing.
Cutting and shaping tools.
Design and operation of metal forming machines: shearing machines, sheet bending machines, tube bending machines, punches, screw presses, eccentric presses, hydraulic presses.

Educational Goals

– Understanding the underlying physical processes and the effects of temperature and friction during the plastic deformation of metallic materials.
– Learning the basic principles and laws of the theory of plasticity and applying them to assess the deformation potential, the required force and work and the final properties of the work pieces.
– Getting acquainted with the main methods of metal forming as well as the design and use of relevant machinery and tools.
– Developing the ability to plan, to select the appropriate material and equipment and to perform the necessary calculations for the production of the desired parts.

General Skills

Research, analysis and synthesis of data and information
Using corresponding technologies
Decision making
Autonomous work
Promoting free, creative and inductive thinking

Teaching Methods

Lectures.
Exercises.
Laboratory.
Projected presentations.
E-mail communication.
Online synchronous and asynchronous teaching platform (moodle).
Interactive teaching.

Students Evaluation

Assessment Language: Greek
Final written examination including theoretical part (70%) and solving exercises (30%).

Recommended Bibliography

https://moodle.teithe.gr/pluginfile.php/17236/mod_resource/content/0/ΔΙΑΜΟΡΦΩΣΕΙΣ ΧΩΡΙΣ ΑΦΑΙΡΕΣΗ ΥΛΙΚΟΥ – ΘΕΩΡΙΑ.pdf (in Greek)
https://moodle.teithe.gr/pluginfile.php/17237/mod_resource/content/0/ΔΧΑΥΤ – ΑΣΚΗΣΕΙΣ.pdf (in Greek)
T.Z. Blazynski: Plasticity and Modern Metal-forming Technology, 1989, Elsevier, ISBN 978-1-85166-272-2
S. Kalpakjian, S. Schmid: Manufacturing Engineering and Technology Prentice Hall; 5th edition