Q&A
Basic concept of forging:
Purpose: To change the shape of the metal and enhance its strength and toughness.
Principle: By applying plastic deformation, forging breaks internal casting defects, refines the grain structure, and improves the mechanical properties of the material.
- Forging Diagram
- Casting Diagram
- Comparison Table
| Category | Forging | Casting |
| Definition | Forging is a manufacturing process that shapes metal using localized compressive forces. | Casting involves heating metal until it becomes molten and pouring it into a mold to form various shapes. |
| Material Form | Solid metal (e.g., bars, billets, plates, etc.) | Liquid metal (e.g., iron sand, steel sand, etc.) |
| Compressive & Fatigue Strength | Higher | Lower |
| Temperature | Approx. 950°–1250°C | Approx. 1360°–1420°C |
| Shape & Size Capability | Forging has limitations in producing complex metal shapes. | Different casting methods can produce a wide variety of metal shapes. |
| Tolerance | Lower | Higher |
| Labor Requirement | Forging typically requires more manual labor than casting. | Casting generally requires less manual labor than forging. |