Zusammenfassung der Ressource
Metals
- What are metals?
- Chemical elementsthat are organised in the priodic table
- Metals and non-metals
- Types of metals
- Bronze, brass, steel, stainless steel
- Properties
- Castability
- Weldability
- Ductility
- Malleability
- Foldability
- Machinability
- Obtaining metals
- Mining and metallurgy
- Open-pit mines
- Enviromental problems
- Mining spoils the landscape
- it alters the soil structure
- Blasting produces and smoke pollution
- Some metals are toxic
- Metalworking tools
- Drilling tools
- Drills
- Drill bits
- Punches
- Cutting tools
- Filling tools
- Grinders
- Files
- Sandpaper