345-0308/02 – Metal Forming (Tv)

The aim of the course is to acquire knowledge: - the physical principle of plastic deformation, plasticity concepts, formability, deformation work and the influence of physical and material parameters on the plastic deformation - the new unconventional forming technologies - superplastic forming, orbital forming, powders forming, new technology to production of fine-grained materials, severe plastic deformation Skills: - classify the stress-strain curves, cold and hot forming processes, the material aspects, plasticity conditions and laws plastic deformation - plastometric perform materials testing competencies: - to select appropriate forming technologies to production of machine parts, classified parameters and aspects influencing these choice - compile and realize technological processes - to propose the construction of forming tools and equipment

Physical principle of plastic deformation.Fundamental theory of dislocations. Deformation work, strain hardening, stress-strain curves. Ductility, formability, strengthening. Physical factors of plastic deformation - temperature, strain rate,friction. Forming such a system. Classification of metal forming technology. Forming machines - classification, characteristics. Tension state, the dependence between stress and strain. The fundamental tests to determine deformation resistance and formability. Laws of plasticity. Simulated methods in forming processes. Method of work strain. The method of thin sections, experimental methods, modelling of technological processes. Fundamental analysis of forming technologies. Upsetting betwen the rigid parallel planes. Drop forging. Bulk forming. Shet forming. Forward cold and hot extrusion. Backward extrusion, deformation state. Drawing rotation and non-rotation shape, the state of deformation. Mechanical and hydraulic machines. Forming tools. Non conventional technologies. Orbital forming. Semisolid forming of steels and Al alloys. Fundamental superplastic forming. Powder Metallurgy as a way of production of nanomaterials. Severe plastic deformation. Methods of production nanomaterials and their microstructure. Technology to production of ultra-fine grained materials. Metallic glasses as new type of materials with unique physical and mechanical. properties. Titanium alloys, structure, properties and industrial application. New magnesium light alloys for structural and medical applications.

Schuler GmbH. Metal Forming Handbook. Springer 1998, ISBN 3-540-61185-1 Tschätsch, H. Metal Forming Practise: Processes - Machines - Tools, Springer, Wiesbaden 2005, ISBN 978-3-642-06977-2 Hosford, W., F., Caddel, R., M. Metal Forming: Mechanics and Metallurgy, Cambridge 2007, ISBN 978-0-521-88121-0

Preparation of 5 programs and their continuous monitoring. Performing the final test of knowledge taught subject. Program 1: Approximation of working diagram tensile tear testing. Program 2: Upsetting between rigid parallel plates. Program 3: Design the shape forging, constructions and design of the lower and upper dies. Program 4: Solutions strain-stress state by bulk cold forming. Program 5: Solutions strain-stress state of the drawing sheet.