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22 Cards in this Set
- Front
- Back
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name the 4 main groups of metals
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*pure metals
*alloys *ferrous metals *non-ferrous metals |
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which type of metal contains iron and rusts?
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ferrous metals
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how can shine be preserved in metals such as copper, brass and aluminium?
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polish and coat with clear lacquer
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what happens to copper and aluminium when beaten and bent?
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work hardened
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how can copper and aluminium be annealed (softened)?
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by heating with a blowtorch and cooling to the correct colour
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what does malleable mean?
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easy to bend and beat into shape
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what does ductile mean?
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easy to draw into wire
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how are tools made with tool steel hardened?
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by heating until red hot and cooling quickly in water
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what are tools like after hardening?
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very brittle
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what must be done to the tool after hardening?
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it must be tempered
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how are tools tempered?
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by heating slowly until the point reaches the correct colour, then by cooling quickly in water
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name 2 pure metals
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aluminium and copper
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name 5 alloys
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*duralumin
*mild steel *stainless steel *tool steel *brass |
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name 4 non-ferrous metals
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*aluminium
*copper *duralumin *brass |
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name 3 ferrous metals
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*mild steel
*stainless steel *tool steel |
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name a metal which is lightweight, easily shaped and formed, malleable, with a low melting point
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aluminium
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name a metal which is a good conductor of heat and electricity, easily bent and shaped, malleable and ductile
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copper
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name a metal which is lightweight and strong, easily formed and shaped and malleable
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duralumin
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name a metal which is easily welded and formed, needs surface protection and is inexpensive
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mild steel
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name a metal which has good rust resistance, decorative silver colour and shapes and forms well
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stainless steel
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name a metal which is very hard-wearing and can be ground sharp
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tool steel
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name a metal which has a decorative golden colour and casts easily
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brass
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