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Teaching GuideTerm Higher Technical University College of Nautical Science and Naval Engines |
| Grao en Máquinas Navais |
 Subjects |
| Mechanical Technology |
| Contents |
| Identifying Data | 2023/24 | |||||||||||||
| Subject | Mechanical Technology | Code | 631G03029 | |||||||||||
| Study programme |
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| Descriptors | Cycle | Period | Year | Type | Credits | |||||||||
| Graduate | Yearly |
Third | Optional | 9 | ||||||||||
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| Topic | Sub-topic |
| 1. INTRODUCTION TO MECHANICAL TECHNOLOGY | • Concept of Mechanical Technology. • Classification of conformation processes. • Relationship of Mechanical Technology with other disciplines. • Current status and future trends. |
| 2. ORGANIZATION OF THE MECHANICAL WORKSHOP | • Generalities • Lighting and electrical, water and compressed air distribution. • Technical section, production section and warehouses. • Safety and risk prevention in mechanical work. • Safety measures that should be adopted to guarantee a safe work environment and for the use of hand tools, machine tools and measuring instruments. |
| 3. INTRODUCTION TO THE TOOLS AND TOOLS OF THE MECHANICAL WORKSHOP | • The bench and vices. • Verification tools. Nomenclature and employment. • Tracing tools. Nomenclature and employment. • Tools for manual use. Nomenclature and application. • Machine tools. Nomenclature and application. • Characteristics and limitations of the process used for manufacturing and repair. • Properties and parameters related to the manufacture and repair of systems and components. |
| 4. INTRODUCTION TO THE MATERIALS | Metallurgical products and classification of ferrous alloys. • Steels: chemical composition, classification and commercial forms. • Foundries: classification Metallurgical products and classification of ferrous alloys. • Steels: chemical composition, classification and commercial forms. • Foundries: classification • Sintered materials: classification • Non-ferrous materials: classification, properties and applications. • Non-metallic materials: classification, properties and applications. |
| 5. STANDARDIZATION AND QUALITY CONTROL | • Concept of Normalization and need for its use. • Development of standards and world bodies that create them. • Interchangeability. ISO Dimensional Tolerance System • Importance of quality in the project and productivity: quality control methods |
| 6. INTRODUCTION TO METROLOGY | • Concept of Metrology and Metrotechnics. • Systems of units: historical review, patterns, multiples, submultiples and equivalences between systems. • Measurement errors. Guys. Mathematical treatment of measurement errors. • Measurement methods: direct and indirect measurement |
| 7. MEASUREMENT AND CALIBRATION OF DIMENSIONS, SURFACES and SHAPES | • Instruments and methods for direct measurement of lengths • Instruments and methods to measure lengths by comparison. • Instruments and methods for direct measurement of angles. Angle patterns. • Geometric instruments and methods for measuring angles, radii and cones. • Concept and importance of surface finish. • Measurement parameters of surface quality. symbology. • Instruments and methods for measuring roughness • Verification of forms in general • Verification of particular forms. • Verification of alignment of machine axes |
| 8. JOINING TECHNIQUES BY ADJUSTMENT | • Interchangeability • Dimensional tolerance • ISO Tolerance System • Mechanical adjustment • ISO system settings • Applications |
| 9. MECHANICAL ELEMENTS: ROLLING BEARINGS | • Definition and uses of bearings. • Components, materials and characteristics. Manufacturing. • Types of bearings and the forces they transmit. Designation and applications. • Choice of bearings, assembly, disassembly, lubrication and diagnosis. • Assembly and disassembly techniques, verification and inspection |
| 10. MECHANICAL ELEMENTS: GEARS | • Mechanics of the friction cylinder and the gear. • Properties of the involute. Stresses on the tooth. • Methodology for obtaining a given gear ratio. • Straight toothed wheels. Metric modular system and Anglo-Saxon system. • Helical toothed wheels. • Calculation of gear trains for a given gear ratio. • Assembly and disassembly techniques, verification and inspection |
| 11. TRANSMISSION SYSTEMS | • Mechanics of the friction cylinder and the gear. • Properties of the involute. Stresses on the tooth. • Methodology for obtaining a given gear ratio. • Straight toothed wheels. Metric modular system and Anglo-Saxon system. • Helical toothed wheels. • Calculation of gear trains for a given gear ratio. • Assembly and disassembly techniques, verification and inspection |
| 12. JOINING TECHNIQUES BY THREADED ELEMENTS | • Definition and generation of a thread. • Classification of threads and applications. Direction of the thread. Thread of several entrances. • Fundamental elements and dimensions of a thread. • Types of threaded elements for union. Classification of bolts and nuts. • Thread systems: fastening, drive and special threads. • Thread dimensioning. Calculation, measurement and verification of threads. • Washers and nut retention methods. • Study of the tightening torque to cause a determined tensile load on a screw. |
| 13. JOINING TECHNIQUES BY WELDING | • Welding metallurgy. weldability. Effects of heat input. • Design and types of welded joints. Check. symbology. • Soft soldering. • Oxyacetylene welding • Submerged electric arc welding. • Welding by electric arc with coated electrode. • Electric arc welding in an inert atmosphere. • Electric resistance welding: spot, bump, seam and butt • Welding by mechanical action: forging, pressure, percussion, friction and ultrasound. • Welding by chemical action: explosion and aluminothermic • Electromagnetic induction welding: impulses and high frequency. • High thermal density welding: laser, plasma, and electron beam. • Special welding processes. |
| 14. DESTRUCTIVE TESTING TECHNIQUES | • Definition and purpose of Destructive Testing. • Mechanical properties of materials • Tensile test • Hardness test: Brinell and Rockwell methods. • Shock test |
| 15. NON-DESTRUCTIVE TESTING TECHNIQUES | • Definition and purpose of Non-Destructive Testing. • VISUAL INSPECTION. Human vision assistance techniques. • PENETRATING LIQUIDS. Types of liquids and methodology. • ELECTROMAGNETIC RADIATION. Fluoroscopy and Tomography. • INDUCED CURRENTS. Methodology and applications. • MAGNETIC PARTICLES. Methodology and magnetic effects on the pieces. • ULTRASOUND. Methodology depending on the material and the medium. • INFRARED THERMOGRAPHY. Instrumentation and applications. |
| 16. CUTTING TECHNIQUES | • CUTTING TOOLS: Saws, band saws, grinders, ... • OXYCUT: Shaping by oxyacetylene flame • WATER CUT • ARC-AIR: Cutting and patching by arc-air:. • PLASMA CUTTING: Shaping by electron beam |
| 17. INTRODUCTION TO THE FORMATION BY MATERIAL REMOVAL. | • Shaping processes by chip removal • Elementary monofilament tool: geometry and characteristic angles • Mechanics of cutting. Chip formation and efforts on the tool. • Thermodynamics of the cut. Materials and fluids used. • Duration of the tool: speed, wear and cutting economy. • Multi-edged tools: concept, types and use |
| 18. FORMING TECHNIQUES BY MATERIAL REMOVAL | • TURNING: components and types of lathes, tools and operations • PLANING: components and types of planing, tools and tools • KNURLING: components and operations. • CHISELING: tools and operations for cutting and grooving. • SCRAPPING: tools and finishing operations by hand. • FILING: types of files and filing operations. • SAWING: types of saws and sawing operations. • MILLING: components and types of milling machines, tools and operations • DRILLING: tool geometry, operations, times and pulling power • SPOTTING: components and types of spotting, tools and tools. • BORING: types of chucks, manual and machine boring operations • REAMING: types of reamers, manual and machine reaming operations. • BROACHING: types of broaches, internal, external and helical broaching operations. • THREADING: Taps and dies, practice of threading by hand. |
| 19. AUTOMATION OF MACHINING PROCESSES | • Introduction to numerical control and production automation. • Applications, advantages and disadvantages of numerical control. • Characteristics of machine tools governed by numerical control. • Reference points, axis nomenclature and movement. • Control notions of a numerical control industrial machine. |
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