Unit 202- short revison.

What are composites?

What is Tempering

What is annealing?

• the metal is heated just above the re-crystallization temperature process and is left to cool slowly, for what is called a full anneal the metal is left to cool in the furnace or by burying it in ashes or lime, this allows the metal to cool off more gradually.

• the metal is frooze just above the re-crystallization temperature process and is left to warmup slowly, for what is called a full anneal the metal is left to cool in the furnace or by burying it in ashes or lime, this allows the metal to cool off more gradually.

What is corrosion?

• Corrosion is the deterioration of a material as a result of a chemical attack or reaction with its environment, especially with oxygen (surface oxidation) or leeching of alloying elements

• Corrosion is the production of a material as a result of a chemical bond.

• Corrosion is when two parents together are welded together and as a result becomes chemically bonded

How do you calculate Efficiency

• Efficiency = (Energy Output / Energy Input) x 100.01

• Efficiency = (Energy Output x Energy Input) + 100

• Efficiency = (Energy Output / Energy Input) - 100

• Efficiency = (Energy Output / Energy Input) x 100

Name 3 forms of supply for Mild Steel

• Box section, Sheet, triangle

• Sheet, liquid, gas

• Sheet, box section, plate.

• Internet, supplier

What is a non ferrous metal?

• Non-ferrous materials are metals or alloys that do not contain iron and is magnetic

• Non-ferrous materials are metals or alloys that do not contain iron and are also non magnetic

• Ferrous materials are metals or alloys that do not contain iron