Manufacturing Technologies University of Rome Tor Vergata

Transcription

1 Manufacturing Tech (6 cr) + Metallurgy (3 cr) Initial introduction (1 week) Timetable 6 credits (54-60 h) End of the course: 28 giugno Type of examination Written test Oral test (mandatory) Average of marks Introduction Teachers: Fabrizio QUADRINI (6 cr) Maria Elisa TATA (3 cr) fabrizio.quadrini@uniroma2.it Phone: Room: II Floor Building Industriale Reference Book Kalpakjian S., Manufacturing Engineering and Technology, Addison-Wesley Publishing Company 1/10

2 Bachelor s Degree in Manufacturing Technologies (6 cr) Manufacturing of metals: fundamental of metal-casting, metal-casting processes and equipment, bulk forming (rolling, forging, extrusion and drawing), sheet-metal forming, sintering, fundamentals of machining, cutting-tools, machining processes (turning, drilling, milling). Manufacturing of plastics and composites: structure and properties of polymers, properties and applications of composite materials, forming and shaping of plastics, processing composite materials. Joining processes and advanced machining: fusion-welding, solid-state welding, adhesive-bonding, fastening, laser-beam machining, electron-beam machining, water jet and abrasive water-jet machining, electrical-discharge machining. Reference book: Manufacturing Engineering and Technology, Serope Kalpakjian and Steven R. Schmid, Prentice Hall. 2/10

3 General Introduction What is manufacturing? Manufacturing ( manu factus ): making products Continuous and discrete products From raw materials to final products by adding values High-value-added products Assembling 3/10

4 History of technology Products develop with processes 4/10

5 Manufacturing Technologies Product design and concurrent engineering Design involves the creative and systematic prescription of the shape and characteristics of an artifact to achieve specified objectives while simultaneously satisfying several constraints Design process Concurrent engineering (simultaneous engineering) to bring products to the marketplace as rapidly as possible, so as to gain a higher percentage share of the market and thus higher profits A prototype is a physical or virtual model of an individual component or product In concurrent engineering, the design and manufacture of products are integrated with a view toward optimizing all elements involved in the life cycle of the product CAD/CAE/CAM Design for service and green design, lean manufacturing 5/10

6 Selection of materials and processes Wide variety of materials are available, each type having its own (a) material properties and manufacturing characteristics, (b) advantages and limitations, (c) material and production costs, and (d) consumer and industrial applications Ferrous metals: Carbon, alloy, stainless, and tool and die steels Nonferrous metals: Aluminum, magnesium, copper, nickel, titanium, superalloys, refractory metals, beryllium, zirconium, low-melting-point alloys, and precious metals Plastics (polymers): Thermoplastics, thermosets, and elastomers Ceramics, glasses, glass ceramics, graphite, diamond, and diamond-like materials Composite materials: Reinforced plastics and metal-matrix and ceramic-matrix composites Nanomaterials Shape-memory alloys (also called smart materials), amorphous alloys, semiconductors, and superconductors Mechanical properties (e.g. strength, ductility, hardness, toughness, elasticity, fatigue, and creep resistance) Physical properties (e.g. density, specific heat, thermal expansion, and conductivity, melting point, and electrical and magnetic properties) Chemical properties (e.g. oxidation, corrosion, degradation, toxicity, and flammability) Manufacturing properties (workability) Functional properties (tribology, aesthetics) 6/10

7 Availability of materials 7/10

8 Available processes (primary processes, secondary working) 8/10

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