Manufacturing Processes and Materials Fundamentals
1. Manufacturing Basics
Manufacturing is the process of making parts or products by changing their geometry, properties, appearance, and/or by assembly.
- Technological definition: Physical or chemical processes alter material geometry, properties, or appearance.
- Economic definition: Transforms material into items of greater value through processing or assembly.
Manufacturing Process Groups
- Processing operations: Change the shape, properties, or surface of a material. Includes shaping, property-enhancing,
Metal Casting Processes: Techniques and Applications
Casting Processes: Manufacturing Complex Geometries
Casting is a fundamental manufacturing process used to create complex geometries and components, often with internal holes. It consists of pouring molten metal into a mold, allowing it to cool and solidify, and then extracting the finished casting from the mold.
1. Non-Permanent Mold Casting
These processes utilize molds that are destroyed or consumed during the casting process, meaning a new mold is required for each casting.
1.1. Sand Casting
Sand
Read MoreManufacturing Processes: Comparisons and Techniques
TIG Welding vs. MIG Welding
| Sr. No. | Feature | TIG (Gas Tungsten Arc Welding) | MIG (Gas Metal Arc Welding) |
|---|---|---|---|
| 1 | Electrode | Non-consumable electrodes (tungsten or tungsten alloys) | Consumable electrodes (bare welding wire of desired composition) |
| 2 | Electrode Function | Generates an arc; does not melt | Generates an arc and melts |
| 3 | Application | Easier for thin plates and small parts | Widely used for thick plates (above 4mm) |
| 4 | Welding Torch Cooling | Water-cooled | Air or water-cooled |
| 5 | Metal Joining | Used for joining dissimilar metals | Used for |