Cours
Permanent URI for this collectionhdl:123456789/446
Browse
2 results
Search Results
Item MECHANICHAL MANUFACTURING(Faculté des sciences et de la technologie, 2024-02-23) BOUBAAYA RabahMachining by material removal is one of the processes of mechanical manufacturing. This machining represents the search for solutions that allow obtaining a conceivable part at a cost with good performance, by combining information relating to the chronological order of the operations performed, the use of skilled labor, machine tools, tools and equipment requested. This technique also allows us to produce parts with complex shapes and high precision without modifying the characteristics of the machined material. Material removal machining allows for very precise tolerances, which is crucial in many fields, such as aerospace, automotive and tool manufacturing. This process is applicable to a wide range of materials, including metals, plastics, composites and ceramics, making it a versatile technique for many industries. In addition, this method is also used for the repair or refurbishment of damaged or worn parts, thus extending their service life and avoiding the waste of valuable resources. In summary, material removal machining remains an indispensable pillar in modern manufacturing, combining precision, versatility and cost efficiency. This handout entitled "Mechanical Manufacturing" is intended for second-year students of the Academic License in Mechanical Engineering, Mechanical Construction option. It is designed to highlight knowledge of product manufacturing techniques, in particular mechanical products. It is written in a simplified manner with examples introduced after giving notions so that the student can assimilate the content of the course and have a clear vision of its application in the industrial sector. This document is divided into two parts, the first part of which concerns the theory of metal cutting from the point of view of cutting materials, geometry of cutting tools, chip formation mechanism, cutting forces, heating and damage of cutting tools as well as the methodology for choosing cutting parameters. The second part deals with machine tool technology, based on cutting movements, main components and kinematic chains for some machine tools.Item Surface Treatments(2023-01-03) BOUBAAYA RabahSurface treatments and coatings currently constitute one of the essential means of improving the functional properties of metals, in particular resistance to oxidation and corrosion, resistance to fatigue in all its forms (mechanical fatigue, thermal fatigue, surface fatigue), thermal insulation, electrical conductivity, resistance to friction and wear, without forgetting the color and appearance, biocompatibility or adhesion of another class of materials (ceramic or polymer). In 2017, they represented between 8 and 9% of the overall turnover of industrial metalworking subcontracting and up to 15% if we include their share in integrated workshops. Among the different surface treatment processes, it is possible to distinguish four families: structural transformation treatments of mechanical or thermal origin, diffusion or thermochemical treatments, conversion treatments and coatings. The main sectors of activity are automobiles, construction, public works, mechanics, aeronautics and space, weapons, electrical equipment and biomedical. This handout entitled “surface treatments” is intended for first-year Masters in Materials Engineering students. The aim of this handout is to describe the different surface treatments and coatings based on improved functional properties based on numerous industrial examples. The improvement of these properties is directly a function of the internal health of the deposits or surface layers modified by the treatment. The document will address in a final chapter the different means of destructive and non-destructive control. It is written in a simplified manner with examples introduced after having given concepts so that the student can assimilate the course content and have a clear vision of its application in the industrial sector.