MP INTRO.pptx
- 1. What is Manufacturing? The word manufacture is derived from two Latin words manus (hand) and factus (make); the combination means “made by hand” “Made by hand” accurately described the fabrication methods that were used when the English word “manufacture” was first coined around 1567 A.D. Now a day, most modern manufacturing operations are accomplished by mechanized and automated equipment that is supervised by human workers
- 3. Need of Manufacturing Role of manufacturing is to satisfy the needs of human beings through offering the improved products and services for the facility of mankind. To produce goods to support the living and improve the standard of living To take advantage of the economies of scale and produce large quantities in low cost As resources are limited, we need to optimize the use of resources to increase the productivity “More goods are produced using less resources” or “Reduce Wastages” Six Sigma, TQM, TPM, Kaizen, Quality Circles, lean and Agile Manufacturing
- 4. Classification of Manufacturing Processes Various processes applied in manufacturing to convert raw materials into finished goods can be classified in the following broad categories: Primary Shaping (Forming Processes) Deforming Processes Machining/ Material Removal Processes Surface Machining Processes Joining Processes Material Properties Modification Processes
- 5. Primary Shaping (Forming Processes) Its an additive manufacturing in which the products are made by addition. Cohesion is normally observed among particles Casting Powder Metallurgy 3D Printers Plastic Technology
- 6. Deforming Processes These processes make suitable use of stresses like compression, tensile and shearing or combined to cause plastic deformation of materials to convert them into the desired shapes: Forging Rolling Extrusion Drawing Embossing Sheet Metal Working
- 7. Machining/ Material Removal Processes In these processes desired surface is produced by providing suitable relative motion between the tool and workpiece. In this case the material is removed by shearing so the workpiece is subjected to comparatively lower stresses than Deformation processes: Turning Drilling Milling Shaping Grinding Broaching Slotting Hobbing Boring Threading Knurling Parting
- 8. Surface Finishing Operations These operations are used to provide good surface finish on the metal surfaces. Small or negligible amount of material is added or removed: Honing Lapping Buffing Tumbling Galvanizing Pickling Sand blasting Electroplating Plastic and metal coating
- 9. Joining Processes In these processes two or more metal pieces are united together to make a final product permanently or temporarily: Welding Riveting Soldering Brazing Sintering Couplings Nuts & Bolts Keys and Cotters
- 10. Material Properties Modification Processes In this process properties of the material are changed to suit the desirable characteristics without changing the shape Heat Treatment Shot Peening Surface Chemical Treatment
- 11. Manufacturing Processes: Casting Schematic illustration of various casting processes
- 12. Manufacturing Processes: Forming and Shaping Schematic illustration of various bulk deformation processes
- 13. Manufacturing Processes: Forming and Shaping Schematic illustration of various sheet metal forming processes
- 14. Manufacturing Processes: Machining Schematic illustrations of various machining and finishing processes.
- 15. Manufacturing Processes: Joining Schematic illustration of various joining processes
- 16. Manufacturing Processes: Forming and Shaping Schematic illustration of various polymer processing methods