Metal - processes Flashcards
(15 cards)
What are the stages of extracting ore?
Purifying the sources of raw material - metal compound is separated from bits of sand and rocks
Extracting the metal from the compound - chemically separated from other elements
Conversion into metal
What are the 3 main methods of extracting metals from their ore?
Reduction of ore with carbon
Reduction of molten ore with electrolysis
Reduction of the ore with a more reactive metal
What is a stock form?
Different standard sizes and shapes that you can buy the material in
What will a manufacturer have to consider when buying stock forms?
The product being manufactured
The scale of production
Cost
Manufacturing methods
What are some advantages of stock forms?
Can be transported and handled more easily than raw materials
Cheaper than special sizes - processed in large quantities
International standard - same in most countries
Readily available for designers when designing a product
What are the tools used in school for marking out metals?
Steel ruler
Engineers square
Centre punch
Scriber
What are the tools used in school for cutting metals?
Junior hacksaw
Hacksaw
Twist bit
Centre lathe
What are the tools used in school for shaping metals?
Half round file
Flat file
Needle files
Abrasive pad
Wet + dry paper
Emery cloth
What are the tools used for assembling metals?
Nuts and bolts
What are the tools used for finishing metals?
Self finish
Paint
Lacquer
What are the tools that are used in school suitable for?
Suitable for a one of or a small batch as they are labour intensive
Compare equipment in a workshop to commercial manufacturing:
Hand tools + small power tools
Investment in specialist equipment
Compare the prices in a workshop to commercial manufacturing:
Inexpensive investment in comparison to commercial manufacturing
Expensive
Compare the scale in a workshop to commercial manufacturing:
Small scale, one offs or a small batch
Large scale - specialist skill level
Compare the amount of time in a workshop to commercial manufacturing
Time consuming
Automated production process
