Czech Technical University in Prague Faculty of Mechanical Engineering Department of Manufacturing Technology Phone: URL: Head: Doc. Ing. J. Suchánek, CSc. Vice-head: Doc. Ing. R. Dvořák, CSc. Manager: Ing. B. Bednář, CSc. Secretary: M. Maříková

Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning Forming Advanced technologies and materials used in metal forming Testing of formability in sheet metal forming (FLD curves) Die design in closed die forging Research of tool wear in forging Computer aided techniques used in metal forming Numerical simulation of metal forming processes

Casting Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning Casting and casting process design Numerical simulation of casting processes Analysis of high pressure casting technology Relationship among chemical composition, structure, and properties of metals Study of ductile iron properties Research of investment casting

Welding Welding, cutting and marking (gas, arc, plasma and laser welding techniques) Soldering and brazing Weld cladding Measurement of weldments defects The versatile laser system for welding, cutting, drilling, and hardening GSI Lumonics - JK701H Specifications: - Wavelength: 1064 nm - Maximum mean power: 550 W - Maximum pulse energy: 70 J - Maximum peak power: 7.0 kW - Pulse width range: 0.5 msec to >50 msec - Repetition rate: 0.2 to 500 Hz - Focusing distance: 80, 133, 200 mm - Movement speed: 10 – 50 m/min - Rotation speed: 96 min -1 - Max. movement: X 600, Y 400, Z 400 mm Welding up to 2.5mm penetration of steel Welding with speeds up to 2.5m/minute Cutting up to 4m/minute Cutting and drilling up to 10mm in depth Cutting and drilling with kerf widths or hole diameters down to 100 microns Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning

Surface Treatment Tribometer TOP 3 Research of functional coatings (organic and inorganic) Optimization of cleaning processes Conversion coatings on stainless steels Anodic oxidation Legislative of surface engineering in EU Advanced surface finishing methods Determination of tribology characteristics of surface coatings Device for detection of surface cleanliness. Sample of measurement grease thickness by the impulse fluorescent method on coin relief. Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning

Machining Testing of machinability Testing of cutting ability Measurement of cutting parameters Testing of CAM systems Testing of machining on CNC machines Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning

Metrology Quality control Complex quality of production Systems of quality control Mechanical engineering metrology Special methods of measuring Technical standardisation Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning

Process and Systems Planning Machining and assembly processes planning Rationalization of production (lean production system) Production systems planning and logistics (analysis of material´s flows) Work analysis Time and motions studies (MTM-1 and MTM-2 methods) Automation of engineering works, computer aided techniques (CAE, CIM,…) Evaluation methodology for the recycling process planning Division of: Forming Casting Welding Surface Treatment Machining Metrology Process and Systems Planning

Research trends in Mg alloys manufacturing Casting processes Forming and Formability Welding and Weldability Tribology problems Materials properties CTU research project VZ “Research of Advanced Materials Processing for Engineering Industry” supported by the special CTU Rector’s office fund Research trends in Mg alloys manufacturing Main domains Casting Forming Welding Tribology

Research - Casting Building of experimental workplace for melting Mg alloys Establishing of High-pressure Die-casting Centre in the Czech Republic in cooperation with BEZ Motory, Hradec Kralove, KOVOLIT, Modrice Research in material composition, metallurgy, casting methods, heat treatment, shielding gasses, … Simulations of gravity sand casting Research trends in Mg alloys manufacturing Main domains Casting Forming Welding Tribology Casting of test samples for other branches (stakes, tablets, castings with different wall thickness, …)

Research - Forming 4% Mg alloys are used in forming processes Formability is limited due to the hexagonal closed-packed crystal structure The forming temperature range is °C. Manufacturing methods  Rolling  Extrusion processes  Forging  Sheet forming  Thixoforming Future goals:  Experimental hot forging of casting preforms  Optimisation of technological processes parameters Research trends in Mg alloys manufacturing Main domains Casting Forming Welding Tribology

Research - Welding Welding technologies used for Mg alloys processing:  Gas Metal Arc Welding (GMAW)  Gas Tungsten Arc Welding (GTAW)  Resistance Spot Welding (RSW)  Laser Beam Welding (LBM)  Plasma Cutting  Laser Cutting Main research fields:  Welding and cutting  Repairing and renovation  Laser marking Welding testing methods:  Weld macrographs and micrographs  Non destructive testing  Destructive testing Laser system with Nd:YAG laser JK 701H from Coherent Research trends in Mg alloys manufacturing Main domains Casting Forming Welding Tribology

Research - Tribology Fabrication of surfaces with extreme low friction coefficient Fabrication of surfaces with high degree of wear resistance Surfaces renovation Processing of highly resistant layers with tribological properties suitable for extreme conditions in manufacturing engineering without dismounting. Reaction on surface and detail RVS layer Research trends in Mg alloys manufacturing Main domains Casting Forming Welding Tribology Cylinder Piston Piston rings Metaloceramics layer